大学英语四级题库_大学英语题库

单项选择题

The horse and carriage is a thing of the past, but love and marriage are still with us and still closely interrelated. Most American marriages, (1) first marriages uniting young people, are the result of mutual attraction and affection (2) than practical considerations.
In the United States, parents do not (3) marriages for their children. Teenagers begin dating in high school and usually find mates through their own academic and social (4) .
(5) young people feel free to choose their friends from (6) groups, most choose a mate of similar (7) .
This is due in part to parental guidance. Parents cannot (8) spouses (配偶 ) for their children, but they can usually (9) choices by voicing disapproval of someone they consider unsuitable.
(10) , marriages between members of different groups (interclass, interfaith, and interracial marriages) are (11) probably because of the greater mobility of today’s youth and the fact that they are (12) by fewer prejudices than their parents. Many young people leave their hometowns to attend college, serve in the armed forces, (13) pursue a career in a bigger city.
Once away from home and family, they are more (14) to date and marry outside their own social group.
In mobile American society, inter- class marriages are neither (15) nor astoni- shing. Interfaith marriages are (16) the rise, especially between Protestants (基督教徒) and Catholics (天主教徒). On the other hand, interracial marriages are still very (17) . It can be difficult for interracial couples to find a place to live, maintain friendships, and (18) a family. Marriages between people of different national (19) (but the same race and religion) have been commonplace here (20) colonial times.

A．specially
B．naturally
C．particularly
D．fortunately

单项选择题

Marvin Minsky is famous (1) the father of Artificial Intelligence, but he was (2) the author of another signal achievement. In the 1950s, he built a revolutionary light microscope that enabled him to (3) successfully deeper layer in a specimen with astonishing clearness, (4) first having to undertake the hard task of cutting the specimen into thin (5) Minsky’s invention did not (6) wide praise from the public at that time. (7) , when he patented(申请专利权) his "double - focusing stage-scanning microscope" in 1961, (8) people understood what it could do. During the 17-year life of the patent, no (9) of similar design were manufactured. (10) for his newly invented optics, Minsky (11) on to other challen- ges, leaving his intention to rust in a (12) of his basement.
Thirteen years later his approach (13) known as confocal microscopy(双焦显微镜学) caught public attention. (14) , the technology is proving to be one of the most exciting advances in optical microscopy in this century. The extent (15) which current interest was sparked by rediscovery of Minsky’s early (16) is not completely clear. (17) , the happy result is that scores of (18) kinds of confocal microscopes are now (19) in form that (20) from easy to complicated.

A．for
B．at
C．as
D．in

单项选择题

AIDS threatens not only lives butalso—in poor countries—economic development. By (1) mainly at adults 20 to 49 years old, AIDS robs these societies (2) some of their most productive citizens. Ignorance and fear of the disease can (3) families and communities and may even strain political relations between nations.
Because AIDS is a worldwide epidemic (传染病，流行病), nothing (4) than a worldwide effort can control and perhaps some day wipe the disease. Governments must (5) by fully informing their citizens (6) the epidemic and, most important, by telling people (7) actions they can take to prevent infection (感染 ). Public health agencies must also insure that blood transfusions(输血) and (8) are safe. Those already infected should receive (9) attention so they do not spread the virus to (10) .
The US government has committed more than two billion dollars to fight (11) AIDS in 1989—including more than 600 million dollars for research. The screening of blood (12) has already ensured the safety of blood supplies in the US, and American military personnel are required to take (13) blood tests. Public health groups have carried (14) AIDS educatior programs aimed particularly at homo- sexuals, (15) addicts and others whose behavior makes them highly susceptible (易受影响的) (16) the virus US government agencies are also (17) public health authorities throughout the developing world in their efforts to (18) the spread of the AIDS virus and to treat those afflicted with the disease. Given the rapid spread of the disease and the number of people now (19) , the battle against AIDS will be difficult to win. But it’s a battle the world cannot (20) to lose.

A．striking
B．sticking
C．stirring
D．stinging

单项选择题

American teenagers have always worked for extra pocket money. More than their predecessors (前辈), today’s young people are (1) to work long hours during the week for hundreds of dollars each months. They spend the money (2) themselves rather than contributing it (3) their families. In a 1997 (4) of 16,000 high school seniors nationwide, it was (5) that eighty percent of students who worked (6) their earnings on their own needs, (7) as clothing, stereo equipment, records and movies. (8) five percent said they contributed most of their income, (9) often exceeded 200 a month, to help pay family living (10) .
The benefits of this work-and- spend ethics (伦理观) are being (11) argued. Some experts, and many parents, (12) that year-round part-time employment increases youngsters’ (13) of worth, teaches them (14) responsibility and reduces tension, and thus conflict(冲突) (15) the family.
Others, (16) , argue that working teenagers are separated, physically and financially, (17) their families, which in tum (18) parental authority.
Teenagers’ schoolwork can also suffer."When youngsters (19) for luxuries, they are buying distraction (20) education," said a program director for the U.S. Department of Education. Working teenagers them- selves say they have less time to spend with their friends and families.

[A] about [C] likely
[B] fond [D] possible

单项选择题

AIDS threatens not only lives butalso—in poor countries—economic development. By (1) mainly at adults 20 to 49 years old, AIDS robs these societies (2) some of their most productive citizens. Ignorance and fear of the disease can (3) families and communities and may even strain political relations between nations.
Because AIDS is a worldwide epidemic (传染病，流行病), nothing (4) than a worldwide effort can control and perhaps some day wipe the disease. Governments must (5) by fully informing their citizens (6) the epidemic and, most important, by telling people (7) actions they can take to prevent infection (感染 ). Public health agencies must also insure that blood transfusions(输血) and (8) are safe. Those already infected should receive (9) attention so they do not spread the virus to (10) .
The US government has committed more than two billion dollars to fight (11) AIDS in 1989—including more than 600 million dollars for research. The screening of blood (12) has already ensured the safety of blood supplies in the US, and American military personnel are required to take (13) blood tests. Public health groups have carried (14) AIDS educatior programs aimed particularly at homo- sexuals, (15) addicts and others whose behavior makes them highly susceptible (易受影响的) (16) the virus US government agencies are also (17) public health authorities throughout the developing world in their efforts to (18) the spread of the AIDS virus and to treat those afflicted with the disease. Given the rapid spread of the disease and the number of people now (19) , the battle against AIDS will be difficult to win. But it’s a battle the world cannot (20) to lose.

A．from
B．for
C．of
D．off

单项选择题

American teenagers have always worked for extra pocket money. More than their predecessors (前辈), today’s young people are (1) to work long hours during the week for hundreds of dollars each months. They spend the money (2) themselves rather than contributing it (3) their families. In a 1997 (4) of 16,000 high school seniors nationwide, it was (5) that eighty percent of students who worked (6) their earnings on their own needs, (7) as clothing, stereo equipment, records and movies. (8) five percent said they contributed most of their income, (9) often exceeded 200 a month, to help pay family living (10) .
The benefits of this work-and- spend ethics (伦理观) are being (11) argued. Some experts, and many parents, (12) that year-round part-time employment increases youngsters’ (13) of worth, teaches them (14) responsibility and reduces tension, and thus conflict(冲突) (15) the family.
Others, (16) , argue that working teenagers are separated, physically and financially, (17) their families, which in tum (18) parental authority.
Teenagers’ schoolwork can also suffer."When youngsters (19) for luxuries, they are buying distraction (20) education," said a program director for the U.S. Department of Education. Working teenagers them- selves say they have less time to spend with their friends and families.

[A] by
C. in
B. on
D. for

单项选择题

The horse and carriage is a thing of the past, but love and marriage are still with us and still closely interrelated. Most American marriages, (1) first marriages uniting young people, are the result of mutual attraction and affection (2) than practical considerations.
In the United States, parents do not (3) marriages for their children. Teenagers begin dating in high school and usually find mates through their own academic and social (4) .
(5) young people feel free to choose their friends from (6) groups, most choose a mate of similar (7) .
This is due in part to parental guidance. Parents cannot (8) spouses (配偶 ) for their children, but they can usually (9) choices by voicing disapproval of someone they consider unsuitable.
(10) , marriages between members of different groups (interclass, interfaith, and interracial marriages) are (11) probably because of the greater mobility of today’s youth and the fact that they are (12) by fewer prejudices than their parents. Many young people leave their hometowns to attend college, serve in the armed forces, (13) pursue a career in a bigger city.
Once away from home and family, they are more (14) to date and marry outside their own social group.
In mobile American society, inter- class marriages are neither (15) nor astoni- shing. Interfaith marriages are (16) the rise, especially between Protestants (基督教徒) and Catholics (天主教徒). On the other hand, interracial marriages are still very (17) . It can be difficult for interracial couples to find a place to live, maintain friendships, and (18) a family. Marriages between people of different national (19) (but the same race and religion) have been commonplace here (20) colonial times.

A．more
B．rather
C．less
D．better

单项选择题

Marvin Minsky is famous (1) the father of Artificial Intelligence, but he was (2) the author of another signal achievement. In the 1950s, he built a revolutionary light microscope that enabled him to (3) successfully deeper layer in a specimen with astonishing clearness, (4) first having to undertake the hard task of cutting the specimen into thin (5) Minsky’s invention did not (6) wide praise from the public at that time. (7) , when he patented(申请专利权) his "double - focusing stage-scanning microscope" in 1961, (8) people understood what it could do. During the 17-year life of the patent, no (9) of similar design were manufactured. (10) for his newly invented optics, Minsky (11) on to other challen- ges, leaving his intention to rust in a (12) of his basement.
Thirteen years later his approach (13) known as confocal microscopy(双焦显微镜学) caught public attention. (14) , the technology is proving to be one of the most exciting advances in optical microscopy in this century. The extent (15) which current interest was sparked by rediscovery of Minsky’s early (16) is not completely clear. (17) , the happy result is that scores of (18) kinds of confocal microscopes are now (19) in form that (20) from easy to complicated.

A．too
B．either
C．even
D．also

单项选择题

American teenagers have always worked for extra pocket money. More than their predecessors (前辈), today’s young people are (1) to work long hours during the week for hundreds of dollars each months. They spend the money (2) themselves rather than contributing it (3) their families. In a 1997 (4) of 16,000 high school seniors nationwide, it was (5) that eighty percent of students who worked (6) their earnings on their own needs, (7) as clothing, stereo equipment, records and movies. (8) five percent said they contributed most of their income, (9) often exceeded 200 a month, to help pay family living (10) .
The benefits of this work-and- spend ethics (伦理观) are being (11) argued. Some experts, and many parents, (12) that year-round part-time employment increases youngsters’ (13) of worth, teaches them (14) responsibility and reduces tension, and thus conflict(冲突) (15) the family.
Others, (16) , argue that working teenagers are separated, physically and financially, (17) their families, which in tum (18) parental authority.
Teenagers’ schoolwork can also suffer."When youngsters (19) for luxuries, they are buying distraction (20) education," said a program director for the U.S. Department of Education. Working teenagers them- selves say they have less time to spend with their friends and families.

A．to
B．in
C．among
D．with

单项选择题

Marvin Minsky is famous (1) the father of Artificial Intelligence, but he was (2) the author of another signal achievement. In the 1950s, he built a revolutionary light microscope that enabled him to (3) successfully deeper layer in a specimen with astonishing clearness, (4) first having to undertake the hard task of cutting the specimen into thin (5) Minsky’s invention did not (6) wide praise from the public at that time. (7) , when he patented(申请专利权) his "double - focusing stage-scanning microscope" in 1961, (8) people understood what it could do. During the 17-year life of the patent, no (9) of similar design were manufactured. (10) for his newly invented optics, Minsky (11) on to other challen- ges, leaving his intention to rust in a (12) of his basement.
Thirteen years later his approach (13) known as confocal microscopy(双焦显微镜学) caught public attention. (14) , the technology is proving to be one of the most exciting advances in optical microscopy in this century. The extent (15) which current interest was sparked by rediscovery of Minsky’s early (16) is not completely clear. (17) , the happy result is that scores of (18) kinds of confocal microscopes are now (19) in form that (20) from easy to complicated.

A．view
B．make
C．bring
D．grow

单项选择题

The horse and carriage is a thing of the past, but love and marriage are still with us and still closely interrelated. Most American marriages, (1) first marriages uniting young people, are the result of mutual attraction and affection (2) than practical considerations.
In the United States, parents do not (3) marriages for their children. Teenagers begin dating in high school and usually find mates through their own academic and social (4) .
(5) young people feel free to choose their friends from (6) groups, most choose a mate of similar (7) .
This is due in part to parental guidance. Parents cannot (8) spouses (配偶 ) for their children, but they can usually (9) choices by voicing disapproval of someone they consider unsuitable.
(10) , marriages between members of different groups (interclass, interfaith, and interracial marriages) are (11) probably because of the greater mobility of today’s youth and the fact that they are (12) by fewer prejudices than their parents. Many young people leave their hometowns to attend college, serve in the armed forces, (13) pursue a career in a bigger city.
Once away from home and family, they are more (14) to date and marry outside their own social group.
In mobile American society, inter- class marriages are neither (15) nor astoni- shing. Interfaith marriages are (16) the rise, especially between Protestants (基督教徒) and Catholics (天主教徒). On the other hand, interracial marriages are still very (17) . It can be difficult for interracial couples to find a place to live, maintain friendships, and (18) a family. Marriages between people of different national (19) (but the same race and religion) have been commonplace here (20) colonial times.

A．arrange
B．engage
C．manage
D．propose

单项选择题

AIDS threatens not only lives butalso—in poor countries—economic development. By (1) mainly at adults 20 to 49 years old, AIDS robs these societies (2) some of their most productive citizens. Ignorance and fear of the disease can (3) families and communities and may even strain political relations between nations.
Because AIDS is a worldwide epidemic (传染病，流行病), nothing (4) than a worldwide effort can control and perhaps some day wipe the disease. Governments must (5) by fully informing their citizens (6) the epidemic and, most important, by telling people (7) actions they can take to prevent infection (感染 ). Public health agencies must also insure that blood transfusions(输血) and (8) are safe. Those already infected should receive (9) attention so they do not spread the virus to (10) .
The US government has committed more than two billion dollars to fight (11) AIDS in 1989—including more than 600 million dollars for research. The screening of blood (12) has already ensured the safety of blood supplies in the US, and American military personnel are required to take (13) blood tests. Public health groups have carried (14) AIDS educatior programs aimed particularly at homo- sexuals, (15) addicts and others whose behavior makes them highly susceptible (易受影响的) (16) the virus US government agencies are also (17) public health authorities throughout the developing world in their efforts to (18) the spread of the AIDS virus and to treat those afflicted with the disease. Given the rapid spread of the disease and the number of people now (19) , the battle against AIDS will be difficult to win. But it’s a battle the world cannot (20) to lose.

A．promote
B．make
C．strengthen
D．disrupt

单项选择题

AIDS threatens not only lives butalso—in poor countries—economic development. By (1) mainly at adults 20 to 49 years old, AIDS robs these societies (2) some of their most productive citizens. Ignorance and fear of the disease can (3) families and communities and may even strain political relations between nations.
Because AIDS is a worldwide epidemic (传染病，流行病), nothing (4) than a worldwide effort can control and perhaps some day wipe the disease. Governments must (5) by fully informing their citizens (6) the epidemic and, most important, by telling people (7) actions they can take to prevent infection (感染 ). Public health agencies must also insure that blood transfusions(输血) and (8) are safe. Those already infected should receive (9) attention so they do not spread the virus to (10) .
The US government has committed more than two billion dollars to fight (11) AIDS in 1989—including more than 600 million dollars for research. The screening of blood (12) has already ensured the safety of blood supplies in the US, and American military personnel are required to take (13) blood tests. Public health groups have carried (14) AIDS educatior programs aimed particularly at homo- sexuals, (15) addicts and others whose behavior makes them highly susceptible (易受影响的) (16) the virus US government agencies are also (17) public health authorities throughout the developing world in their efforts to (18) the spread of the AIDS virus and to treat those afflicted with the disease. Given the rapid spread of the disease and the number of people now (19) , the battle against AIDS will be difficult to win. But it’s a battle the world cannot (20) to lose.

A．less
B．more
C．rather
D．better

单项选择题

American teenagers have always worked for extra pocket money. More than their predecessors (前辈), today’s young people are (1) to work long hours during the week for hundreds of dollars each months. They spend the money (2) themselves rather than contributing it (3) their families. In a 1997 (4) of 16,000 high school seniors nationwide, it was (5) that eighty percent of students who worked (6) their earnings on their own needs, (7) as clothing, stereo equipment, records and movies. (8) five percent said they contributed most of their income, (9) often exceeded 200 a month, to help pay family living (10) .
The benefits of this work-and- spend ethics (伦理观) are being (11) argued. Some experts, and many parents, (12) that year-round part-time employment increases youngsters’ (13) of worth, teaches them (14) responsibility and reduces tension, and thus conflict(冲突) (15) the family.
Others, (16) , argue that working teenagers are separated, physically and financially, (17) their families, which in tum (18) parental authority.
Teenagers’ schoolwork can also suffer."When youngsters (19) for luxuries, they are buying distraction (20) education," said a program director for the U.S. Department of Education. Working teenagers them- selves say they have less time to spend with their friends and families.

A．view
B．inspection
C．observation
D．survey

单项选择题

The horse and carriage is a thing of the past, but love and marriage are still with us and still closely interrelated. Most American marriages, (1) first marriages uniting young people, are the result of mutual attraction and affection (2) than practical considerations.
In the United States, parents do not (3) marriages for their children. Teenagers begin dating in high school and usually find mates through their own academic and social (4) .
(5) young people feel free to choose their friends from (6) groups, most choose a mate of similar (7) .
This is due in part to parental guidance. Parents cannot (8) spouses (配偶 ) for their children, but they can usually (9) choices by voicing disapproval of someone they consider unsuitable.
(10) , marriages between members of different groups (interclass, interfaith, and interracial marriages) are (11) probably because of the greater mobility of today’s youth and the fact that they are (12) by fewer prejudices than their parents. Many young people leave their hometowns to attend college, serve in the armed forces, (13) pursue a career in a bigger city.
Once away from home and family, they are more (14) to date and marry outside their own social group.
In mobile American society, inter- class marriages are neither (15) nor astoni- shing. Interfaith marriages are (16) the rise, especially between Protestants (基督教徒) and Catholics (天主教徒). On the other hand, interracial marriages are still very (17) . It can be difficult for interracial couples to find a place to live, maintain friendships, and (18) a family. Marriages between people of different national (19) (but the same race and religion) have been commonplace here (20) colonial times.

A．position
B．manage
C．contract
D．contacts

单项选择题

Marvin Minsky is famous (1) the father of Artificial Intelligence, but he was (2) the author of another signal achievement. In the 1950s, he built a revolutionary light microscope that enabled him to (3) successfully deeper layer in a specimen with astonishing clearness, (4) first having to undertake the hard task of cutting the specimen into thin (5) Minsky’s invention did not (6) wide praise from the public at that time. (7) , when he patented(申请专利权) his "double - focusing stage-scanning microscope" in 1961, (8) people understood what it could do. During the 17-year life of the patent, no (9) of similar design were manufactured. (10) for his newly invented optics, Minsky (11) on to other challen- ges, leaving his intention to rust in a (12) of his basement.
Thirteen years later his approach (13) known as confocal microscopy(双焦显微镜学) caught public attention. (14) , the technology is proving to be one of the most exciting advances in optical microscopy in this century. The extent (15) which current interest was sparked by rediscovery of Minsky’s early (16) is not completely clear. (17) , the happy result is that scores of (18) kinds of confocal microscopes are now (19) in form that (20) from easy to complicated.

A．with
B．without
C．and
D．but

单项选择题

American teenagers have always worked for extra pocket money. More than their predecessors (前辈), today’s young people are (1) to work long hours during the week for hundreds of dollars each months. They spend the money (2) themselves rather than contributing it (3) their families. In a 1997 (4) of 16,000 high school seniors nationwide, it was (5) that eighty percent of students who worked (6) their earnings on their own needs, (7) as clothing, stereo equipment, records and movies. (8) five percent said they contributed most of their income, (9) often exceeded 200 a month, to help pay family living (10) .
The benefits of this work-and- spend ethics (伦理观) are being (11) argued. Some experts, and many parents, (12) that year-round part-time employment increases youngsters’ (13) of worth, teaches them (14) responsibility and reduces tension, and thus conflict(冲突) (15) the family.
Others, (16) , argue that working teenagers are separated, physically and financially, (17) their families, which in tum (18) parental authority.
Teenagers’ schoolwork can also suffer."When youngsters (19) for luxuries, they are buying distraction (20) education," said a program director for the U.S. Department of Education. Working teenagers them- selves say they have less time to spend with their friends and families.

单项选择题

AIDS threatens not only lives butalso—in poor countries—economic development. By (1) mainly at adults 20 to 49 years old, AIDS robs these societies (2) some of their most productive citizens. Ignorance and fear of the disease can (3) families and communities and may even strain political relations between nations.
Because AIDS is a worldwide epidemic (传染病，流行病), nothing (4) than a worldwide effort can control and perhaps some day wipe the disease. Governments must (5) by fully informing their citizens (6) the epidemic and, most important, by telling people (7) actions they can take to prevent infection (感染 ). Public health agencies must also insure that blood transfusions(输血) and (8) are safe. Those already infected should receive (9) attention so they do not spread the virus to (10) .
The US government has committed more than two billion dollars to fight (11) AIDS in 1989—including more than 600 million dollars for research. The screening of blood (12) has already ensured the safety of blood supplies in the US, and American military personnel are required to take (13) blood tests. Public health groups have carried (14) AIDS educatior programs aimed particularly at homo- sexuals, (15) addicts and others whose behavior makes them highly susceptible (易受影响的) (16) the virus US government agencies are also (17) public health authorities throughout the developing world in their efforts to (18) the spread of the AIDS virus and to treat those afflicted with the disease. Given the rapid spread of the disease and the number of people now (19) , the battle against AIDS will be difficult to win. But it’s a battle the world cannot (20) to lose.

A．cooperate
B．correspond
C．coordinate
D．contradict

单项选择题

Marvin Minsky is famous (1) the father of Artificial Intelligence, but he was (2) the author of another signal achievement. In the 1950s, he built a revolutionary light microscope that enabled him to (3) successfully deeper layer in a specimen with astonishing clearness, (4) first having to undertake the hard task of cutting the specimen into thin (5) Minsky’s invention did not (6) wide praise from the public at that time. (7) , when he patented(申请专利权) his "double - focusing stage-scanning microscope" in 1961, (8) people understood what it could do. During the 17-year life of the patent, no (9) of similar design were manufactured. (10) for his newly invented optics, Minsky (11) on to other challen- ges, leaving his intention to rust in a (12) of his basement.
Thirteen years later his approach (13) known as confocal microscopy(双焦显微镜学) caught public attention. (14) , the technology is proving to be one of the most exciting advances in optical microscopy in this century. The extent (15) which current interest was sparked by rediscovery of Minsky’s early (16) is not completely clear. (17) , the happy result is that scores of (18) kinds of confocal microscopes are now (19) in form that (20) from easy to complicated.

A．parts
B．sections
C．groups
D．separations

单项选择题

The horse and carriage is a thing of the past, but love and marriage are still with us and still closely interrelated. Most American marriages, (1) first marriages uniting young people, are the result of mutual attraction and affection (2) than practical considerations.
In the United States, parents do not (3) marriages for their children. Teenagers begin dating in high school and usually find mates through their own academic and social (4) .
(5) young people feel free to choose their friends from (6) groups, most choose a mate of similar (7) .
This is due in part to parental guidance. Parents cannot (8) spouses (配偶 ) for their children, but they can usually (9) choices by voicing disapproval of someone they consider unsuitable.
(10) , marriages between members of different groups (interclass, interfaith, and interracial marriages) are (11) probably because of the greater mobility of today’s youth and the fact that they are (12) by fewer prejudices than their parents. Many young people leave their hometowns to attend college, serve in the armed forces, (13) pursue a career in a bigger city.
Once away from home and family, they are more (14) to date and marry outside their own social group.
In mobile American society, inter- class marriages are neither (15) nor astoni- shing. Interfaith marriages are (16) the rise, especially between Protestants (基督教徒) and Catholics (天主教徒). On the other hand, interracial marriages are still very (17) . It can be difficult for interracial couples to find a place to live, maintain friendships, and (18) a family. Marriages between people of different national (19) (but the same race and religion) have been commonplace here (20) colonial times.

A．Since
B．Though
C．If
D．Hence

单项选择题

American teenagers have always worked for extra pocket money. More than their predecessors (前辈), today’s young people are (1) to work long hours during the week for hundreds of dollars each months. They spend the money (2) themselves rather than contributing it (3) their families. In a 1997 (4) of 16,000 high school seniors nationwide, it was (5) that eighty percent of students who worked (6) their earnings on their own needs, (7) as clothing, stereo equipment, records and movies. (8) five percent said they contributed most of their income, (9) often exceeded 200 a month, to help pay family living (10) .
The benefits of this work-and- spend ethics (伦理观) are being (11) argued. Some experts, and many parents, (12) that year-round part-time employment increases youngsters’ (13) of worth, teaches them (14) responsibility and reduces tension, and thus conflict(冲突) (15) the family.
Others, (16) , argue that working teenagers are separated, physically and financially, (17) their families, which in tum (18) parental authority.
Teenagers’ schoolwork can also suffer."When youngsters (19) for luxuries, they are buying distraction (20) education," said a program director for the U.S. Department of Education. Working teenagers them- selves say they have less time to spend with their friends and families.

A．paid
B．cost
C．depended
D．spent

单项选择题

AIDS threatens not only lives butalso—in poor countries—economic development. By (1) mainly at adults 20 to 49 years old, AIDS robs these societies (2) some of their most productive citizens. Ignorance and fear of the disease can (3) families and communities and may even strain political relations between nations.
Because AIDS is a worldwide epidemic (传染病，流行病), nothing (4) than a worldwide effort can control and perhaps some day wipe the disease. Governments must (5) by fully informing their citizens (6) the epidemic and, most important, by telling people (7) actions they can take to prevent infection (感染 ). Public health agencies must also insure that blood transfusions(输血) and (8) are safe. Those already infected should receive (9) attention so they do not spread the virus to (10) .
The US government has committed more than two billion dollars to fight (11) AIDS in 1989—including more than 600 million dollars for research. The screening of blood (12) has already ensured the safety of blood supplies in the US, and American military personnel are required to take (13) blood tests. Public health groups have carried (14) AIDS educatior programs aimed particularly at homo- sexuals, (15) addicts and others whose behavior makes them highly susceptible (易受影响的) (16) the virus US government agencies are also (17) public health authorities throughout the developing world in their efforts to (18) the spread of the AIDS virus and to treat those afflicted with the disease. Given the rapid spread of the disease and the number of people now (19) , the battle against AIDS will be difficult to win. But it’s a battle the world cannot (20) to lose.

A．on
B．against
C．about
D．over

问答题

The horse and carriage is a thing of the past, but love and marriage are still with us and still closely interrelated. Most American marriages, (1) first marriages uniting young people, are the result of mutual attraction and affection (2) than practical considerations.
In the United States, parents do not (3) marriages for their children. Teenagers begin dating in high school and usually find mates through their own academic and social (4) .
(5) young people feel free to choose their friends from (6) groups, most choose a mate of similar (7) .
This is due in part to parental guidance. Parents cannot (8) spouses (配偶 ) for their children, but they can usually (9) choices by voicing disapproval of someone they consider unsuitable.
(10) , marriages between members of different groups (interclass, interfaith, and interracial marriages) are (11) probably because of the greater mobility of today’s youth and the fact that they are (12) by fewer prejudices than their parents. Many young people leave their hometowns to attend college, serve in the armed forces, (13) pursue a career in a bigger city.
Once away from home and family, they are more (14) to date and marry outside their own social group.
In mobile American society, inter- class marriages are neither (15) nor astoni- shing. Interfaith marriages are (16) the rise, especially between Protestants (基督教徒) and Catholics (天主教徒). On the other hand, interracial marriages are still very (17) . It can be difficult for interracial couples to find a place to live, maintain friendships, and (18) a family. Marriages between people of different national (19) (but the same race and religion) have been commonplace here (20) colonial times.

A．separate
B．identical
C．independent
D．different

答案： AI,E,AF,A,AH,A,B0,E,I,D,E,AD,B0,I,C,A,AB,I,AD,D,E,AF,E,AD,D,...

单项选择题

Marvin Minsky is famous (1) the father of Artificial Intelligence, but he was (2) the author of another signal achievement. In the 1950s, he built a revolutionary light microscope that enabled him to (3) successfully deeper layer in a specimen with astonishing clearness, (4) first having to undertake the hard task of cutting the specimen into thin (5) Minsky’s invention did not (6) wide praise from the public at that time. (7) , when he patented(申请专利权) his "double - focusing stage-scanning microscope" in 1961, (8) people understood what it could do. During the 17-year life of the patent, no (9) of similar design were manufactured. (10) for his newly invented optics, Minsky (11) on to other challen- ges, leaving his intention to rust in a (12) of his basement.
Thirteen years later his approach (13) known as confocal microscopy(双焦显微镜学) caught public attention. (14) , the technology is proving to be one of the most exciting advances in optical microscopy in this century. The extent (15) which current interest was sparked by rediscovery of Minsky’s early (16) is not completely clear. (17) , the happy result is that scores of (18) kinds of confocal microscopes are now (19) in form that (20) from easy to complicated.

A．accept
B．bring
C．achieve
D．earn

单项选择题

American teenagers have always worked for extra pocket money. More than their predecessors (前辈), today’s young people are (1) to work long hours during the week for hundreds of dollars each months. They spend the money (2) themselves rather than contributing it (3) their families. In a 1997 (4) of 16,000 high school seniors nationwide, it was (5) that eighty percent of students who worked (6) their earnings on their own needs, (7) as clothing, stereo equipment, records and movies. (8) five percent said they contributed most of their income, (9) often exceeded 200 a month, to help pay family living (10) .
The benefits of this work-and- spend ethics (伦理观) are being (11) argued. Some experts, and many parents, (12) that year-round part-time employment increases youngsters’ (13) of worth, teaches them (14) responsibility and reduces tension, and thus conflict(冲突) (15) the family.
Others, (16) , argue that working teenagers are separated, physically and financially, (17) their families, which in tum (18) parental authority.
Teenagers’ schoolwork can also suffer."When youngsters (19) for luxuries, they are buying distraction (20) education," said a program director for the U.S. Department of Education. Working teenagers them- selves say they have less time to spend with their friends and families.

A．same
B．such
C．only
D．so

单项选择题

Marvin Minsky is famous (1) the father of Artificial Intelligence, but he was (2) the author of another signal achievement. In the 1950s, he built a revolutionary light microscope that enabled him to (3) successfully deeper layer in a specimen with astonishing clearness, (4) first having to undertake the hard task of cutting the specimen into thin (5) Minsky’s invention did not (6) wide praise from the public at that time. (7) , when he patented(申请专利权) his "double - focusing stage-scanning microscope" in 1961, (8) people understood what it could do. During the 17-year life of the patent, no (9) of similar design were manufactured. (10) for his newly invented optics, Minsky (11) on to other challen- ges, leaving his intention to rust in a (12) of his basement.
Thirteen years later his approach (13) known as confocal microscopy(双焦显微镜学) caught public attention. (14) , the technology is proving to be one of the most exciting advances in optical microscopy in this century. The extent (15) which current interest was sparked by rediscovery of Minsky’s early (16) is not completely clear. (17) , the happy result is that scores of (18) kinds of confocal microscopes are now (19) in form that (20) from easy to complicated.

A．As a result
B．However
C．In fact
D．Nevertheless

单项选择题

The horse and carriage is a thing of the past, but love and marriage are still with us and still closely interrelated. Most American marriages, (1) first marriages uniting young people, are the result of mutual attraction and affection (2) than practical considerations.
In the United States, parents do not (3) marriages for their children. Teenagers begin dating in high school and usually find mates through their own academic and social (4) .
(5) young people feel free to choose their friends from (6) groups, most choose a mate of similar (7) .
This is due in part to parental guidance. Parents cannot (8) spouses (配偶 ) for their children, but they can usually (9) choices by voicing disapproval of someone they consider unsuitable.
(10) , marriages between members of different groups (interclass, interfaith, and interracial marriages) are (11) probably because of the greater mobility of today’s youth and the fact that they are (12) by fewer prejudices than their parents. Many young people leave their hometowns to attend college, serve in the armed forces, (13) pursue a career in a bigger city.
Once away from home and family, they are more (14) to date and marry outside their own social group.
In mobile American society, inter- class marriages are neither (15) nor astoni- shing. Interfaith marriages are (16) the rise, especially between Protestants (基督教徒) and Catholics (天主教徒). On the other hand, interracial marriages are still very (17) . It can be difficult for interracial couples to find a place to live, maintain friendships, and (18) a family. Marriages between people of different national (19) (but the same race and religion) have been commonplace here (20) colonial times.

A．background
B．situation
C．circumstance
D．condition

单项选择题

AIDS threatens not only lives butalso—in poor countries—economic development. By (1) mainly at adults 20 to 49 years old, AIDS robs these societies (2) some of their most productive citizens. Ignorance and fear of the disease can (3) families and communities and may even strain political relations between nations.
Because AIDS is a worldwide epidemic (传染病，流行病), nothing (4) than a worldwide effort can control and perhaps some day wipe the disease. Governments must (5) by fully informing their citizens (6) the epidemic and, most important, by telling people (7) actions they can take to prevent infection (感染 ). Public health agencies must also insure that blood transfusions(输血) and (8) are safe. Those already infected should receive (9) attention so they do not spread the virus to (10) .
The US government has committed more than two billion dollars to fight (11) AIDS in 1989—including more than 600 million dollars for research. The screening of blood (12) has already ensured the safety of blood supplies in the US, and American military personnel are required to take (13) blood tests. Public health groups have carried (14) AIDS educatior programs aimed particularly at homo- sexuals, (15) addicts and others whose behavior makes them highly susceptible (易受影响的) (16) the virus US government agencies are also (17) public health authorities throughout the developing world in their efforts to (18) the spread of the AIDS virus and to treat those afflicted with the disease. Given the rapid spread of the disease and the number of people now (19) , the battle against AIDS will be difficult to win. But it’s a battle the world cannot (20) to lose.

A．how
B．what
C．whether
D．that

单项选择题

American teenagers have always worked for extra pocket money. More than their predecessors (前辈), today’s young people are (1) to work long hours during the week for hundreds of dollars each months. They spend the money (2) themselves rather than contributing it (3) their families. In a 1997 (4) of 16,000 high school seniors nationwide, it was (5) that eighty percent of students who worked (6) their earnings on their own needs, (7) as clothing, stereo equipment, records and movies. (8) five percent said they contributed most of their income, (9) often exceeded 200 a month, to help pay family living (10) .
The benefits of this work-and- spend ethics (伦理观) are being (11) argued. Some experts, and many parents, (12) that year-round part-time employment increases youngsters’ (13) of worth, teaches them (14) responsibility and reduces tension, and thus conflict(冲突) (15) the family.
Others, (16) , argue that working teenagers are separated, physically and financially, (17) their families, which in tum (18) parental authority.
Teenagers’ schoolwork can also suffer."When youngsters (19) for luxuries, they are buying distraction (20) education," said a program director for the U.S. Department of Education. Working teenagers them- selves say they have less time to spend with their friends and families.

A．Other
B．Only
C．Additional
D．Further

单项选择题

Marvin Minsky is famous (1) the father of Artificial Intelligence, but he was (2) the author of another signal achievement. In the 1950s, he built a revolutionary light microscope that enabled him to (3) successfully deeper layer in a specimen with astonishing clearness, (4) first having to undertake the hard task of cutting the specimen into thin (5) Minsky’s invention did not (6) wide praise from the public at that time. (7) , when he patented(申请专利权) his "double - focusing stage-scanning microscope" in 1961, (8) people understood what it could do. During the 17-year life of the patent, no (9) of similar design were manufactured. (10) for his newly invented optics, Minsky (11) on to other challen- ges, leaving his intention to rust in a (12) of his basement.
Thirteen years later his approach (13) known as confocal microscopy(双焦显微镜学) caught public attention. (14) , the technology is proving to be one of the most exciting advances in optical microscopy in this century. The extent (15) which current interest was sparked by rediscovery of Minsky’s early (16) is not completely clear. (17) , the happy result is that scores of (18) kinds of confocal microscopes are now (19) in form that (20) from easy to complicated.

A．few
B．little
C．many
D．most

单项选择题

AIDS threatens not only lives butalso—in poor countries—economic development. By (1) mainly at adults 20 to 49 years old, AIDS robs these societies (2) some of their most productive citizens. Ignorance and fear of the disease can (3) families and communities and may even strain political relations between nations.
Because AIDS is a worldwide epidemic (传染病，流行病), nothing (4) than a worldwide effort can control and perhaps some day wipe the disease. Governments must (5) by fully informing their citizens (6) the epidemic and, most important, by telling people (7) actions they can take to prevent infection (感染 ). Public health agencies must also insure that blood transfusions(输血) and (8) are safe. Those already infected should receive (9) attention so they do not spread the virus to (10) .
The US government has committed more than two billion dollars to fight (11) AIDS in 1989—including more than 600 million dollars for research. The screening of blood (12) has already ensured the safety of blood supplies in the US, and American military personnel are required to take (13) blood tests. Public health groups have carried (14) AIDS educatior programs aimed particularly at homo- sexuals, (15) addicts and others whose behavior makes them highly susceptible (易受影响的) (16) the virus US government agencies are also (17) public health authorities throughout the developing world in their efforts to (18) the spread of the AIDS virus and to treat those afflicted with the disease. Given the rapid spread of the disease and the number of people now (19) , the battle against AIDS will be difficult to win. But it’s a battle the world cannot (20) to lose.

A．indications
B．introductions
C．infections
D．injections

单项选择题

The horse and carriage is a thing of the past, but love and marriage are still with us and still closely interrelated. Most American marriages, (1) first marriages uniting young people, are the result of mutual attraction and affection (2) than practical considerations.
In the United States, parents do not (3) marriages for their children. Teenagers begin dating in high school and usually find mates through their own academic and social (4) .
(5) young people feel free to choose their friends from (6) groups, most choose a mate of similar (7) .
This is due in part to parental guidance. Parents cannot (8) spouses (配偶 ) for their children, but they can usually (9) choices by voicing disapproval of someone they consider unsuitable.
(10) , marriages between members of different groups (interclass, interfaith, and interracial marriages) are (11) probably because of the greater mobility of today’s youth and the fact that they are (12) by fewer prejudices than their parents. Many young people leave their hometowns to attend college, serve in the armed forces, (13) pursue a career in a bigger city.
Once away from home and family, they are more (14) to date and marry outside their own social group.
In mobile American society, inter- class marriages are neither (15) nor astoni- shing. Interfaith marriages are (16) the rise, especially between Protestants (基督教徒) and Catholics (天主教徒). On the other hand, interracial marriages are still very (17) . It can be difficult for interracial couples to find a place to live, maintain friendships, and (18) a family. Marriages between people of different national (19) (but the same race and religion) have been commonplace here (20) colonial times.

A．oppose
B．reject
C．select
D．approve

单项选择题

American teenagers have always worked for extra pocket money. More than their predecessors (前辈), today’s young people are (1) to work long hours during the week for hundreds of dollars each months. They spend the money (2) themselves rather than contributing it (3) their families. In a 1997 (4) of 16,000 high school seniors nationwide, it was (5) that eighty percent of students who worked (6) their earnings on their own needs, (7) as clothing, stereo equipment, records and movies. (8) five percent said they contributed most of their income, (9) often exceeded 200 a month, to help pay family living (10) .
The benefits of this work-and- spend ethics (伦理观) are being (11) argued. Some experts, and many parents, (12) that year-round part-time employment increases youngsters’ (13) of worth, teaches them (14) responsibility and reduces tension, and thus conflict(冲突) (15) the family.
Others, (16) , argue that working teenagers are separated, physically and financially, (17) their families, which in tum (18) parental authority.
Teenagers’ schoolwork can also suffer."When youngsters (19) for luxuries, they are buying distraction (20) education," said a program director for the U.S. Department of Education. Working teenagers them- selves say they have less time to spend with their friends and families.

A．it
B．that
C．they
D．which

单项选择题

The horse and carriage is a thing of the past, but love and marriage are still with us and still closely interrelated. Most American marriages, (1) first marriages uniting young people, are the result of mutual attraction and affection (2) than practical considerations.
In the United States, parents do not (3) marriages for their children. Teenagers begin dating in high school and usually find mates through their own academic and social (4) .
(5) young people feel free to choose their friends from (6) groups, most choose a mate of similar (7) .
This is due in part to parental guidance. Parents cannot (8) spouses (配偶 ) for their children, but they can usually (9) choices by voicing disapproval of someone they consider unsuitable.
(10) , marriages between members of different groups (interclass, interfaith, and interracial marriages) are (11) probably because of the greater mobility of today’s youth and the fact that they are (12) by fewer prejudices than their parents. Many young people leave their hometowns to attend college, serve in the armed forces, (13) pursue a career in a bigger city.
Once away from home and family, they are more (14) to date and marry outside their own social group.
In mobile American society, inter- class marriages are neither (15) nor astoni- shing. Interfaith marriages are (16) the rise, especially between Protestants (基督教徒) and Catholics (天主教徒). On the other hand, interracial marriages are still very (17) . It can be difficult for interracial couples to find a place to live, maintain friendships, and (18) a family. Marriages between people of different national (19) (but the same race and religion) have been commonplace here (20) colonial times.

A．influence
B．make
C．afford
D．provide

单项选择题

Marvin Minsky is famous (1) the father of Artificial Intelligence, but he was (2) the author of another signal achievement. In the 1950s, he built a revolutionary light microscope that enabled him to (3) successfully deeper layer in a specimen with astonishing clearness, (4) first having to undertake the hard task of cutting the specimen into thin (5) Minsky’s invention did not (6) wide praise from the public at that time. (7) , when he patented(申请专利权) his "double - focusing stage-scanning microscope" in 1961, (8) people understood what it could do. During the 17-year life of the patent, no (9) of similar design were manufactured. (10) for his newly invented optics, Minsky (11) on to other challen- ges, leaving his intention to rust in a (12) of his basement.
Thirteen years later his approach (13) known as confocal microscopy(双焦显微镜学) caught public attention. (14) , the technology is proving to be one of the most exciting advances in optical microscopy in this century. The extent (15) which current interest was sparked by rediscovery of Minsky’s early (16) is not completely clear. (17) , the happy result is that scores of (18) kinds of confocal microscopes are now (19) in form that (20) from easy to complicated.

A．techniques
B．works
C．inventions
D．instruments

单项选择题

AIDS threatens not only lives butalso—in poor countries—economic development. By (1) mainly at adults 20 to 49 years old, AIDS robs these societies (2) some of their most productive citizens. Ignorance and fear of the disease can (3) families and communities and may even strain political relations between nations.
Because AIDS is a worldwide epidemic (传染病，流行病), nothing (4) than a worldwide effort can control and perhaps some day wipe the disease. Governments must (5) by fully informing their citizens (6) the epidemic and, most important, by telling people (7) actions they can take to prevent infection (感染 ). Public health agencies must also insure that blood transfusions(输血) and (8) are safe. Those already infected should receive (9) attention so they do not spread the virus to (10) .
The US government has committed more than two billion dollars to fight (11) AIDS in 1989—including more than 600 million dollars for research. The screening of blood (12) has already ensured the safety of blood supplies in the US, and American military personnel are required to take (13) blood tests. Public health groups have carried (14) AIDS educatior programs aimed particularly at homo- sexuals, (15) addicts and others whose behavior makes them highly susceptible (易受影响的) (16) the virus US government agencies are also (17) public health authorities throughout the developing world in their efforts to (18) the spread of the AIDS virus and to treat those afflicted with the disease. Given the rapid spread of the disease and the number of people now (19) , the battle against AIDS will be difficult to win. But it’s a battle the world cannot (20) to lose.

A．direct
B．immediate
C．vertical
D．straight

单项选择题

American teenagers have always worked for extra pocket money. More than their predecessors (前辈), today’s young people are (1) to work long hours during the week for hundreds of dollars each months. They spend the money (2) themselves rather than contributing it (3) their families. In a 1997 (4) of 16,000 high school seniors nationwide, it was (5) that eighty percent of students who worked (6) their earnings on their own needs, (7) as clothing, stereo equipment, records and movies. (8) five percent said they contributed most of their income, (9) often exceeded 200 a month, to help pay family living (10) .
The benefits of this work-and- spend ethics (伦理观) are being (11) argued. Some experts, and many parents, (12) that year-round part-time employment increases youngsters’ (13) of worth, teaches them (14) responsibility and reduces tension, and thus conflict(冲突) (15) the family.
Others, (16) , argue that working teenagers are separated, physically and financially, (17) their families, which in tum (18) parental authority.
Teenagers’ schoolwork can also suffer."When youngsters (19) for luxuries, they are buying distraction (20) education," said a program director for the U.S. Department of Education. Working teenagers them- selves say they have less time to spend with their friends and families.

A．expenses
B．money
C．values
D．charges

单项选择题

The horse and carriage is a thing of the past, but love and marriage are still with us and still closely interrelated. Most American marriages, (1) first marriages uniting young people, are the result of mutual attraction and affection (2) than practical considerations.
In the United States, parents do not (3) marriages for their children. Teenagers begin dating in high school and usually find mates through their own academic and social (4) .
(5) young people feel free to choose their friends from (6) groups, most choose a mate of similar (7) .
This is due in part to parental guidance. Parents cannot (8) spouses (配偶 ) for their children, but they can usually (9) choices by voicing disapproval of someone they consider unsuitable.
(10) , marriages between members of different groups (interclass, interfaith, and interracial marriages) are (11) probably because of the greater mobility of today’s youth and the fact that they are (12) by fewer prejudices than their parents. Many young people leave their hometowns to attend college, serve in the armed forces, (13) pursue a career in a bigger city.
Once away from home and family, they are more (14) to date and marry outside their own social group.
In mobile American society, inter- class marriages are neither (15) nor astoni- shing. Interfaith marriages are (16) the rise, especially between Protestants (基督教徒) and Catholics (天主教徒). On the other hand, interracial marriages are still very (17) . It can be difficult for interracial couples to find a place to live, maintain friendships, and (18) a family. Marriages between people of different national (19) (but the same race and religion) have been commonplace here (20) colonial times.

A．Therefore
B．However
C．Moreover
D．Likewise

单项选择题

AIDS threatens not only lives butalso—in poor countries—economic development. By (1) mainly at adults 20 to 49 years old, AIDS robs these societies (2) some of their most productive citizens. Ignorance and fear of the disease can (3) families and communities and may even strain political relations between nations.
Because AIDS is a worldwide epidemic (传染病，流行病), nothing (4) than a worldwide effort can control and perhaps some day wipe the disease. Governments must (5) by fully informing their citizens (6) the epidemic and, most important, by telling people (7) actions they can take to prevent infection (感染 ). Public health agencies must also insure that blood transfusions(输血) and (8) are safe. Those already infected should receive (9) attention so they do not spread the virus to (10) .
The US government has committed more than two billion dollars to fight (11) AIDS in 1989—including more than 600 million dollars for research. The screening of blood (12) has already ensured the safety of blood supplies in the US, and American military personnel are required to take (13) blood tests. Public health groups have carried (14) AIDS educatior programs aimed particularly at homo- sexuals, (15) addicts and others whose behavior makes them highly susceptible (易受影响的) (16) the virus US government agencies are also (17) public health authorities throughout the developing world in their efforts to (18) the spread of the AIDS virus and to treat those afflicted with the disease. Given the rapid spread of the disease and the number of people now (19) , the battle against AIDS will be difficult to win. But it’s a battle the world cannot (20) to lose.

A．other
B．others
C．another
D．other’s

单项选择题

Marvin Minsky is famous (1) the father of Artificial Intelligence, but he was (2) the author of another signal achievement. In the 1950s, he built a revolutionary light microscope that enabled him to (3) successfully deeper layer in a specimen with astonishing clearness, (4) first having to undertake the hard task of cutting the specimen into thin (5) Minsky’s invention did not (6) wide praise from the public at that time. (7) , when he patented(申请专利权) his "double - focusing stage-scanning microscope" in 1961, (8) people understood what it could do. During the 17-year life of the patent, no (9) of similar design were manufactured. (10) for his newly invented optics, Minsky (11) on to other challen- ges, leaving his intention to rust in a (12) of his basement.
Thirteen years later his approach (13) known as confocal microscopy(双焦显微镜学) caught public attention. (14) , the technology is proving to be one of the most exciting advances in optical microscopy in this century. The extent (15) which current interest was sparked by rediscovery of Minsky’s early (16) is not completely clear. (17) , the happy result is that scores of (18) kinds of confocal microscopes are now (19) in form that (20) from easy to complicated.

A．Unexpected
B．Unappreciated
C．Undone
D．Uninformed

单项选择题

The horse and carriage is a thing of the past, but love and marriage are still with us and still closely interrelated. Most American marriages, (1) first marriages uniting young people, are the result of mutual attraction and affection (2) than practical considerations.
In the United States, parents do not (3) marriages for their children. Teenagers begin dating in high school and usually find mates through their own academic and social (4) .
(5) young people feel free to choose their friends from (6) groups, most choose a mate of similar (7) .
This is due in part to parental guidance. Parents cannot (8) spouses (配偶 ) for their children, but they can usually (9) choices by voicing disapproval of someone they consider unsuitable.
(10) , marriages between members of different groups (interclass, interfaith, and interracial marriages) are (11) probably because of the greater mobility of today’s youth and the fact that they are (12) by fewer prejudices than their parents. Many young people leave their hometowns to attend college, serve in the armed forces, (13) pursue a career in a bigger city.
Once away from home and family, they are more (14) to date and marry outside their own social group.
In mobile American society, inter- class marriages are neither (15) nor astoni- shing. Interfaith marriages are (16) the rise, especially between Protestants (基督教徒) and Catholics (天主教徒). On the other hand, interracial marriages are still very (17) . It can be difficult for interracial couples to find a place to live, maintain friendships, and (18) a family. Marriages between people of different national (19) (but the same race and religion) have been commonplace here (20) colonial times.

A．declining
B．prohibiting
C．increasing
D．reducing

单项选择题

American teenagers have always worked for extra pocket money. More than their predecessors (前辈), today’s young people are (1) to work long hours during the week for hundreds of dollars each months. They spend the money (2) themselves rather than contributing it (3) their families. In a 1997 (4) of 16,000 high school seniors nationwide, it was (5) that eighty percent of students who worked (6) their earnings on their own needs, (7) as clothing, stereo equipment, records and movies. (8) five percent said they contributed most of their income, (9) often exceeded 200 a month, to help pay family living (10) .
The benefits of this work-and- spend ethics (伦理观) are being (11) argued. Some experts, and many parents, (12) that year-round part-time employment increases youngsters’ (13) of worth, teaches them (14) responsibility and reduces tension, and thus conflict(冲突) (15) the family.
Others, (16) , argue that working teenagers are separated, physically and financially, (17) their families, which in tum (18) parental authority.
Teenagers’ schoolwork can also suffer."When youngsters (19) for luxuries, they are buying distraction (20) education," said a program director for the U.S. Department of Education. Working teenagers them- selves say they have less time to spend with their friends and families.

A．partly
B．heatedly
C．thoroughly
D．entirely

单项选择题

Marvin Minsky is famous (1) the father of Artificial Intelligence, but he was (2) the author of another signal achievement. In the 1950s, he built a revolutionary light microscope that enabled him to (3) successfully deeper layer in a specimen with astonishing clearness, (4) first having to undertake the hard task of cutting the specimen into thin (5) Minsky’s invention did not (6) wide praise from the public at that time. (7) , when he patented(申请专利权) his "double - focusing stage-scanning microscope" in 1961, (8) people understood what it could do. During the 17-year life of the patent, no (9) of similar design were manufactured. (10) for his newly invented optics, Minsky (11) on to other challen- ges, leaving his intention to rust in a (12) of his basement.
Thirteen years later his approach (13) known as confocal microscopy(双焦显微镜学) caught public attention. (14) , the technology is proving to be one of the most exciting advances in optical microscopy in this century. The extent (15) which current interest was sparked by rediscovery of Minsky’s early (16) is not completely clear. (17) , the happy result is that scores of (18) kinds of confocal microscopes are now (19) in form that (20) from easy to complicated.

A．engaged
B．ignored
C．moved
D．proceeded

单项选择题

AIDS threatens not only lives butalso—in poor countries—economic development. By (1) mainly at adults 20 to 49 years old, AIDS robs these societies (2) some of their most productive citizens. Ignorance and fear of the disease can (3) families and communities and may even strain political relations between nations.
Because AIDS is a worldwide epidemic (传染病，流行病), nothing (4) than a worldwide effort can control and perhaps some day wipe the disease. Governments must (5) by fully informing their citizens (6) the epidemic and, most important, by telling people (7) actions they can take to prevent infection (感染 ). Public health agencies must also insure that blood transfusions(输血) and (8) are safe. Those already infected should receive (9) attention so they do not spread the virus to (10) .
The US government has committed more than two billion dollars to fight (11) AIDS in 1989—including more than 600 million dollars for research. The screening of blood (12) has already ensured the safety of blood supplies in the US, and American military personnel are required to take (13) blood tests. Public health groups have carried (14) AIDS educatior programs aimed particularly at homo- sexuals, (15) addicts and others whose behavior makes them highly susceptible (易受影响的) (16) the virus US government agencies are also (17) public health authorities throughout the developing world in their efforts to (18) the spread of the AIDS virus and to treat those afflicted with the disease. Given the rapid spread of the disease and the number of people now (19) , the battle against AIDS will be difficult to win. But it’s a battle the world cannot (20) to lose.

A．for
B．over
C．against
D．through

单项选择题

The horse and carriage is a thing of the past, but love and marriage are still with us and still closely interrelated. Most American marriages, (1) first marriages uniting young people, are the result of mutual attraction and affection (2) than practical considerations.
In the United States, parents do not (3) marriages for their children. Teenagers begin dating in high school and usually find mates through their own academic and social (4) .
(5) young people feel free to choose their friends from (6) groups, most choose a mate of similar (7) .
This is due in part to parental guidance. Parents cannot (8) spouses (配偶 ) for their children, but they can usually (9) choices by voicing disapproval of someone they consider unsuitable.
(10) , marriages between members of different groups (interclass, interfaith, and interracial marriages) are (11) probably because of the greater mobility of today’s youth and the fact that they are (12) by fewer prejudices than their parents. Many young people leave their hometowns to attend college, serve in the armed forces, (13) pursue a career in a bigger city.
Once away from home and family, they are more (14) to date and marry outside their own social group.
In mobile American society, inter- class marriages are neither (15) nor astoni- shing. Interfaith marriages are (16) the rise, especially between Protestants (基督教徒) and Catholics (天主教徒). On the other hand, interracial marriages are still very (17) . It can be difficult for interracial couples to find a place to live, maintain friendships, and (18) a family. Marriages between people of different national (19) (but the same race and religion) have been commonplace here (20) colonial times.

A．restrained
B．retained
C．reserved
D．restricted

单项选择题

Marvin Minsky is famous (1) the father of Artificial Intelligence, but he was (2) the author of another signal achievement. In the 1950s, he built a revolutionary light microscope that enabled him to (3) successfully deeper layer in a specimen with astonishing clearness, (4) first having to undertake the hard task of cutting the specimen into thin (5) Minsky’s invention did not (6) wide praise from the public at that time. (7) , when he patented(申请专利权) his "double - focusing stage-scanning microscope" in 1961, (8) people understood what it could do. During the 17-year life of the patent, no (9) of similar design were manufactured. (10) for his newly invented optics, Minsky (11) on to other challen- ges, leaving his intention to rust in a (12) of his basement.
Thirteen years later his approach (13) known as confocal microscopy(双焦显微镜学) caught public attention. (14) , the technology is proving to be one of the most exciting advances in optical microscopy in this century. The extent (15) which current interest was sparked by rediscovery of Minsky’s early (16) is not completely clear. (17) , the happy result is that scores of (18) kinds of confocal microscopes are now (19) in form that (20) from easy to complicated.

A．angle
B．comer
C．quarter
D．side

单项选择题

American teenagers have always worked for extra pocket money. More than their predecessors (前辈), today’s young people are (1) to work long hours during the week for hundreds of dollars each months. They spend the money (2) themselves rather than contributing it (3) their families. In a 1997 (4) of 16,000 high school seniors nationwide, it was (5) that eighty percent of students who worked (6) their earnings on their own needs, (7) as clothing, stereo equipment, records and movies. (8) five percent said they contributed most of their income, (9) often exceeded 200 a month, to help pay family living (10) .
The benefits of this work-and- spend ethics (伦理观) are being (11) argued. Some experts, and many parents, (12) that year-round part-time employment increases youngsters’ (13) of worth, teaches them (14) responsibility and reduces tension, and thus conflict(冲突) (15) the family.
Others, (16) , argue that working teenagers are separated, physically and financially, (17) their families, which in tum (18) parental authority.
Teenagers’ schoolwork can also suffer."When youngsters (19) for luxuries, they are buying distraction (20) education," said a program director for the U.S. Department of Education. Working teenagers them- selves say they have less time to spend with their friends and families.

A．insist
B．demand
C．suggest
D．require

单项选择题

AIDS threatens not only lives butalso—in poor countries—economic development. By (1) mainly at adults 20 to 49 years old, AIDS robs these societies (2) some of their most productive citizens. Ignorance and fear of the disease can (3) families and communities and may even strain political relations between nations.
Because AIDS is a worldwide epidemic (传染病，流行病), nothing (4) than a worldwide effort can control and perhaps some day wipe the disease. Governments must (5) by fully informing their citizens (6) the epidemic and, most important, by telling people (7) actions they can take to prevent infection (感染 ). Public health agencies must also insure that blood transfusions(输血) and (8) are safe. Those already infected should receive (9) attention so they do not spread the virus to (10) .
The US government has committed more than two billion dollars to fight (11) AIDS in 1989—including more than 600 million dollars for research. The screening of blood (12) has already ensured the safety of blood supplies in the US, and American military personnel are required to take (13) blood tests. Public health groups have carried (14) AIDS educatior programs aimed particularly at homo- sexuals, (15) addicts and others whose behavior makes them highly susceptible (易受影响的) (16) the virus US government agencies are also (17) public health authorities throughout the developing world in their efforts to (18) the spread of the AIDS virus and to treat those afflicted with the disease. Given the rapid spread of the disease and the number of people now (19) , the battle against AIDS will be difficult to win. But it’s a battle the world cannot (20) to lose.

A．devotions
B．donations
C．delegations
D．dedications

单项选择题

Marvin Minsky is famous (1) the father of Artificial Intelligence, but he was (2) the author of another signal achievement. In the 1950s, he built a revolutionary light microscope that enabled him to (3) successfully deeper layer in a specimen with astonishing clearness, (4) first having to undertake the hard task of cutting the specimen into thin (5) Minsky’s invention did not (6) wide praise from the public at that time. (7) , when he patented(申请专利权) his "double - focusing stage-scanning microscope" in 1961, (8) people understood what it could do. During the 17-year life of the patent, no (9) of similar design were manufactured. (10) for his newly invented optics, Minsky (11) on to other challen- ges, leaving his intention to rust in a (12) of his basement.
Thirteen years later his approach (13) known as confocal microscopy(双焦显微镜学) caught public attention. (14) , the technology is proving to be one of the most exciting advances in optical microscopy in this century. The extent (15) which current interest was sparked by rediscovery of Minsky’s early (16) is not completely clear. (17) , the happy result is that scores of (18) kinds of confocal microscopes are now (19) in form that (20) from easy to complicated.

A．otherwise
B．or
C．but
D．however

单项选择题

The horse and carriage is a thing of the past, but love and marriage are still with us and still closely interrelated. Most American marriages, (1) first marriages uniting young people, are the result of mutual attraction and affection (2) than practical considerations.
In the United States, parents do not (3) marriages for their children. Teenagers begin dating in high school and usually find mates through their own academic and social (4) .
(5) young people feel free to choose their friends from (6) groups, most choose a mate of similar (7) .
This is due in part to parental guidance. Parents cannot (8) spouses (配偶 ) for their children, but they can usually (9) choices by voicing disapproval of someone they consider unsuitable.
(10) , marriages between members of different groups (interclass, interfaith, and interracial marriages) are (11) probably because of the greater mobility of today’s youth and the fact that they are (12) by fewer prejudices than their parents. Many young people leave their hometowns to attend college, serve in the armed forces, (13) pursue a career in a bigger city.
Once away from home and family, they are more (14) to date and marry outside their own social group.
In mobile American society, inter- class marriages are neither (15) nor astoni- shing. Interfaith marriages are (16) the rise, especially between Protestants (基督教徒) and Catholics (天主教徒). On the other hand, interracial marriages are still very (17) . It can be difficult for interracial couples to find a place to live, maintain friendships, and (18) a family. Marriages between people of different national (19) (but the same race and religion) have been commonplace here (20) colonial times.

A．but
B．or
C．so
D．otherwise

单项选择题

American teenagers have always worked for extra pocket money. More than their predecessors (前辈), today’s young people are (1) to work long hours during the week for hundreds of dollars each months. They spend the money (2) themselves rather than contributing it (3) their families. In a 1997 (4) of 16,000 high school seniors nationwide, it was (5) that eighty percent of students who worked (6) their earnings on their own needs, (7) as clothing, stereo equipment, records and movies. (8) five percent said they contributed most of their income, (9) often exceeded 200 a month, to help pay family living (10) .
The benefits of this work-and- spend ethics (伦理观) are being (11) argued. Some experts, and many parents, (12) that year-round part-time employment increases youngsters’ (13) of worth, teaches them (14) responsibility and reduces tension, and thus conflict(冲突) (15) the family.
Others, (16) , argue that working teenagers are separated, physically and financially, (17) their families, which in tum (18) parental authority.
Teenagers’ schoolwork can also suffer."When youngsters (19) for luxuries, they are buying distraction (20) education," said a program director for the U.S. Department of Education. Working teenagers them- selves say they have less time to spend with their friends and families.

A．sense
B．knowledge
C．learning
D．feeling

单项选择题

AIDS threatens not only lives butalso—in poor countries—economic development. By (1) mainly at adults 20 to 49 years old, AIDS robs these societies (2) some of their most productive citizens. Ignorance and fear of the disease can (3) families and communities and may even strain political relations between nations.
Because AIDS is a worldwide epidemic (传染病，流行病), nothing (4) than a worldwide effort can control and perhaps some day wipe the disease. Governments must (5) by fully informing their citizens (6) the epidemic and, most important, by telling people (7) actions they can take to prevent infection (感染 ). Public health agencies must also insure that blood transfusions(输血) and (8) are safe. Those already infected should receive (9) attention so they do not spread the virus to (10) .
The US government has committed more than two billion dollars to fight (11) AIDS in 1989—including more than 600 million dollars for research. The screening of blood (12) has already ensured the safety of blood supplies in the US, and American military personnel are required to take (13) blood tests. Public health groups have carried (14) AIDS educatior programs aimed particularly at homo- sexuals, (15) addicts and others whose behavior makes them highly susceptible (易受影响的) (16) the virus US government agencies are also (17) public health authorities throughout the developing world in their efforts to (18) the spread of the AIDS virus and to treat those afflicted with the disease. Given the rapid spread of the disease and the number of people now (19) , the battle against AIDS will be difficult to win. But it’s a battle the world cannot (20) to lose.

A．occasional
B．ordinary
C．traditional
D．regular

单项选择题

Marvin Minsky is famous (1) the father of Artificial Intelligence, but he was (2) the author of another signal achievement. In the 1950s, he built a revolutionary light microscope that enabled him to (3) successfully deeper layer in a specimen with astonishing clearness, (4) first having to undertake the hard task of cutting the specimen into thin (5) Minsky’s invention did not (6) wide praise from the public at that time. (7) , when he patented(申请专利权) his "double - focusing stage-scanning microscope" in 1961, (8) people understood what it could do. During the 17-year life of the patent, no (9) of similar design were manufactured. (10) for his newly invented optics, Minsky (11) on to other challen- ges, leaving his intention to rust in a (12) of his basement.
Thirteen years later his approach (13) known as confocal microscopy(双焦显微镜学) caught public attention. (14) , the technology is proving to be one of the most exciting advances in optical microscopy in this century. The extent (15) which current interest was sparked by rediscovery of Minsky’s early (16) is not completely clear. (17) , the happy result is that scores of (18) kinds of confocal microscopes are now (19) in form that (20) from easy to complicated.

A．However
B．For
C．Indeed
D．Hence

单项选择题

The horse and carriage is a thing of the past, but love and marriage are still with us and still closely interrelated. Most American marriages, (1) first marriages uniting young people, are the result of mutual attraction and affection (2) than practical considerations.
In the United States, parents do not (3) marriages for their children. Teenagers begin dating in high school and usually find mates through their own academic and social (4) .
(5) young people feel free to choose their friends from (6) groups, most choose a mate of similar (7) .
This is due in part to parental guidance. Parents cannot (8) spouses (配偶 ) for their children, but they can usually (9) choices by voicing disapproval of someone they consider unsuitable.
(10) , marriages between members of different groups (interclass, interfaith, and interracial marriages) are (11) probably because of the greater mobility of today’s youth and the fact that they are (12) by fewer prejudices than their parents. Many young people leave their hometowns to attend college, serve in the armed forces, (13) pursue a career in a bigger city.
Once away from home and family, they are more (14) to date and marry outside their own social group.
In mobile American society, inter- class marriages are neither (15) nor astoni- shing. Interfaith marriages are (16) the rise, especially between Protestants (基督教徒) and Catholics (天主教徒). On the other hand, interracial marriages are still very (17) . It can be difficult for interracial couples to find a place to live, maintain friendships, and (18) a family. Marriages between people of different national (19) (but the same race and religion) have been commonplace here (20) colonial times.

A．likely
B．possible
C．reluctant
D．lonely

单项选择题

AIDS threatens not only lives butalso—in poor countries—economic development. By (1) mainly at adults 20 to 49 years old, AIDS robs these societies (2) some of their most productive citizens. Ignorance and fear of the disease can (3) families and communities and may even strain political relations between nations.
Because AIDS is a worldwide epidemic (传染病，流行病), nothing (4) than a worldwide effort can control and perhaps some day wipe the disease. Governments must (5) by fully informing their citizens (6) the epidemic and, most important, by telling people (7) actions they can take to prevent infection (感染 ). Public health agencies must also insure that blood transfusions(输血) and (8) are safe. Those already infected should receive (9) attention so they do not spread the virus to (10) .
The US government has committed more than two billion dollars to fight (11) AIDS in 1989—including more than 600 million dollars for research. The screening of blood (12) has already ensured the safety of blood supplies in the US, and American military personnel are required to take (13) blood tests. Public health groups have carried (14) AIDS educatior programs aimed particularly at homo- sexuals, (15) addicts and others whose behavior makes them highly susceptible (易受影响的) (16) the virus US government agencies are also (17) public health authorities throughout the developing world in their efforts to (18) the spread of the AIDS virus and to treat those afflicted with the disease. Given the rapid spread of the disease and the number of people now (19) , the battle against AIDS will be difficult to win. But it’s a battle the world cannot (20) to lose.

A．over
B．out
C．on
D．off

单项选择题

American teenagers have always worked for extra pocket money. More than their predecessors (前辈), today’s young people are (1) to work long hours during the week for hundreds of dollars each months. They spend the money (2) themselves rather than contributing it (3) their families. In a 1997 (4) of 16,000 high school seniors nationwide, it was (5) that eighty percent of students who worked (6) their earnings on their own needs, (7) as clothing, stereo equipment, records and movies. (8) five percent said they contributed most of their income, (9) often exceeded 200 a month, to help pay family living (10) .
The benefits of this work-and- spend ethics (伦理观) are being (11) argued. Some experts, and many parents, (12) that year-round part-time employment increases youngsters’ (13) of worth, teaches them (14) responsibility and reduces tension, and thus conflict(冲突) (15) the family.
Others, (16) , argue that working teenagers are separated, physically and financially, (17) their families, which in tum (18) parental authority.
Teenagers’ schoolwork can also suffer."When youngsters (19) for luxuries, they are buying distraction (20) education," said a program director for the U.S. Department of Education. Working teenagers them- selves say they have less time to spend with their friends and families.

A．racial
B．radical
C．financial
D．rational

单项选择题

Marvin Minsky is famous (1) the father of Artificial Intelligence, but he was (2) the author of another signal achievement. In the 1950s, he built a revolutionary light microscope that enabled him to (3) successfully deeper layer in a specimen with astonishing clearness, (4) first having to undertake the hard task of cutting the specimen into thin (5) Minsky’s invention did not (6) wide praise from the public at that time. (7) , when he patented(申请专利权) his "double - focusing stage-scanning microscope" in 1961, (8) people understood what it could do. During the 17-year life of the patent, no (9) of similar design were manufactured. (10) for his newly invented optics, Minsky (11) on to other challen- ges, leaving his intention to rust in a (12) of his basement.
Thirteen years later his approach (13) known as confocal microscopy(双焦显微镜学) caught public attention. (14) , the technology is proving to be one of the most exciting advances in optical microscopy in this century. The extent (15) which current interest was sparked by rediscovery of Minsky’s early (16) is not completely clear. (17) , the happy result is that scores of (18) kinds of confocal microscopes are now (19) in form that (20) from easy to complicated.

A．in
B．to
C．for
D．by

单项选择题

The horse and carriage is a thing of the past, but love and marriage are still with us and still closely interrelated. Most American marriages, (1) first marriages uniting young people, are the result of mutual attraction and affection (2) than practical considerations.
In the United States, parents do not (3) marriages for their children. Teenagers begin dating in high school and usually find mates through their own academic and social (4) .
(5) young people feel free to choose their friends from (6) groups, most choose a mate of similar (7) .
This is due in part to parental guidance. Parents cannot (8) spouses (配偶 ) for their children, but they can usually (9) choices by voicing disapproval of someone they consider unsuitable.
(10) , marriages between members of different groups (interclass, interfaith, and interracial marriages) are (11) probably because of the greater mobility of today’s youth and the fact that they are (12) by fewer prejudices than their parents. Many young people leave their hometowns to attend college, serve in the armed forces, (13) pursue a career in a bigger city.
Once away from home and family, they are more (14) to date and marry outside their own social group.
In mobile American society, inter- class marriages are neither (15) nor astoni- shing. Interfaith marriages are (16) the rise, especially between Protestants (基督教徒) and Catholics (天主教徒). On the other hand, interracial marriages are still very (17) . It can be difficult for interracial couples to find a place to live, maintain friendships, and (18) a family. Marriages between people of different national (19) (but the same race and religion) have been commonplace here (20) colonial times.

A．scarce
B．risky
C．rare
D．rigid

单项选择题

AIDS threatens not only lives butalso—in poor countries—economic development. By (1) mainly at adults 20 to 49 years old, AIDS robs these societies (2) some of their most productive citizens. Ignorance and fear of the disease can (3) families and communities and may even strain political relations between nations.
Because AIDS is a worldwide epidemic (传染病，流行病), nothing (4) than a worldwide effort can control and perhaps some day wipe the disease. Governments must (5) by fully informing their citizens (6) the epidemic and, most important, by telling people (7) actions they can take to prevent infection (感染 ). Public health agencies must also insure that blood transfusions(输血) and (8) are safe. Those already infected should receive (9) attention so they do not spread the virus to (10) .
The US government has committed more than two billion dollars to fight (11) AIDS in 1989—including more than 600 million dollars for research. The screening of blood (12) has already ensured the safety of blood supplies in the US, and American military personnel are required to take (13) blood tests. Public health groups have carried (14) AIDS educatior programs aimed particularly at homo- sexuals, (15) addicts and others whose behavior makes them highly susceptible (易受影响的) (16) the virus US government agencies are also (17) public health authorities throughout the developing world in their efforts to (18) the spread of the AIDS virus and to treat those afflicted with the disease. Given the rapid spread of the disease and the number of people now (19) , the battle against AIDS will be difficult to win. But it’s a battle the world cannot (20) to lose.

A．drug
B．medicine
C．drink
D．tea

单项选择题

American teenagers have always worked for extra pocket money. More than their predecessors (前辈), today’s young people are (1) to work long hours during the week for hundreds of dollars each months. They spend the money (2) themselves rather than contributing it (3) their families. In a 1997 (4) of 16,000 high school seniors nationwide, it was (5) that eighty percent of students who worked (6) their earnings on their own needs, (7) as clothing, stereo equipment, records and movies. (8) five percent said they contributed most of their income, (9) often exceeded 200 a month, to help pay family living (10) .
The benefits of this work-and- spend ethics (伦理观) are being (11) argued. Some experts, and many parents, (12) that year-round part-time employment increases youngsters’ (13) of worth, teaches them (14) responsibility and reduces tension, and thus conflict(冲突) (15) the family.
Others, (16) , argue that working teenagers are separated, physically and financially, (17) their families, which in tum (18) parental authority.
Teenagers’ schoolwork can also suffer."When youngsters (19) for luxuries, they are buying distraction (20) education," said a program director for the U.S. Department of Education. Working teenagers them- selves say they have less time to spend with their friends and families.

A．with
B．within
C．from
D．by

单项选择题

Marvin Minsky is famous (1) the father of Artificial Intelligence, but he was (2) the author of another signal achievement. In the 1950s, he built a revolutionary light microscope that enabled him to (3) successfully deeper layer in a specimen with astonishing clearness, (4) first having to undertake the hard task of cutting the specimen into thin (5) Minsky’s invention did not (6) wide praise from the public at that time. (7) , when he patented(申请专利权) his "double - focusing stage-scanning microscope" in 1961, (8) people understood what it could do. During the 17-year life of the patent, no (9) of similar design were manufactured. (10) for his newly invented optics, Minsky (11) on to other challen- ges, leaving his intention to rust in a (12) of his basement.
Thirteen years later his approach (13) known as confocal microscopy(双焦显微镜学) caught public attention. (14) , the technology is proving to be one of the most exciting advances in optical microscopy in this century. The extent (15) which current interest was sparked by rediscovery of Minsky’s early (16) is not completely clear. (17) , the happy result is that scores of (18) kinds of confocal microscopes are now (19) in form that (20) from easy to complicated.

A．job
B．work
C．occupation
D．profession

单项选择题

The horse and carriage is a thing of the past, but love and marriage are still with us and still closely interrelated. Most American marriages, (1) first marriages uniting young people, are the result of mutual attraction and affection (2) than practical considerations.
In the United States, parents do not (3) marriages for their children. Teenagers begin dating in high school and usually find mates through their own academic and social (4) .
(5) young people feel free to choose their friends from (6) groups, most choose a mate of similar (7) .
This is due in part to parental guidance. Parents cannot (8) spouses (配偶 ) for their children, but they can usually (9) choices by voicing disapproval of someone they consider unsuitable.
(10) , marriages between members of different groups (interclass, interfaith, and interracial marriages) are (11) probably because of the greater mobility of today’s youth and the fact that they are (12) by fewer prejudices than their parents. Many young people leave their hometowns to attend college, serve in the armed forces, (13) pursue a career in a bigger city.
Once away from home and family, they are more (14) to date and marry outside their own social group.
In mobile American society, inter- class marriages are neither (15) nor astoni- shing. Interfaith marriages are (16) the rise, especially between Protestants (基督教徒) and Catholics (天主教徒). On the other hand, interracial marriages are still very (17) . It can be difficult for interracial couples to find a place to live, maintain friendships, and (18) a family. Marriages between people of different national (19) (but the same race and religion) have been commonplace here (20) colonial times.

A．in
B．at
C．for
D．on

单项选择题

AIDS threatens not only lives butalso—in poor countries—economic development. By (1) mainly at adults 20 to 49 years old, AIDS robs these societies (2) some of their most productive citizens. Ignorance and fear of the disease can (3) families and communities and may even strain political relations between nations.
Because AIDS is a worldwide epidemic (传染病，流行病), nothing (4) than a worldwide effort can control and perhaps some day wipe the disease. Governments must (5) by fully informing their citizens (6) the epidemic and, most important, by telling people (7) actions they can take to prevent infection (感染 ). Public health agencies must also insure that blood transfusions(输血) and (8) are safe. Those already infected should receive (9) attention so they do not spread the virus to (10) .
The US government has committed more than two billion dollars to fight (11) AIDS in 1989—including more than 600 million dollars for research. The screening of blood (12) has already ensured the safety of blood supplies in the US, and American military personnel are required to take (13) blood tests. Public health groups have carried (14) AIDS educatior programs aimed particularly at homo- sexuals, (15) addicts and others whose behavior makes them highly susceptible (易受影响的) (16) the virus US government agencies are also (17) public health authorities throughout the developing world in their efforts to (18) the spread of the AIDS virus and to treat those afflicted with the disease. Given the rapid spread of the disease and the number of people now (19) , the battle against AIDS will be difficult to win. But it’s a battle the world cannot (20) to lose.

A．at
B．for
C．against
D．to

单项选择题

American teenagers have always worked for extra pocket money. More than their predecessors (前辈), today’s young people are (1) to work long hours during the week for hundreds of dollars each months. They spend the money (2) themselves rather than contributing it (3) their families. In a 1997 (4) of 16,000 high school seniors nationwide, it was (5) that eighty percent of students who worked (6) their earnings on their own needs, (7) as clothing, stereo equipment, records and movies. (8) five percent said they contributed most of their income, (9) often exceeded 200 a month, to help pay family living (10) .
The benefits of this work-and- spend ethics (伦理观) are being (11) argued. Some experts, and many parents, (12) that year-round part-time employment increases youngsters’ (13) of worth, teaches them (14) responsibility and reduces tension, and thus conflict(冲突) (15) the family.
Others, (16) , argue that working teenagers are separated, physically and financially, (17) their families, which in tum (18) parental authority.
Teenagers’ schoolwork can also suffer."When youngsters (19) for luxuries, they are buying distraction (20) education," said a program director for the U.S. Department of Education. Working teenagers them- selves say they have less time to spend with their friends and families.

A．furthermore
B．therefore
C．however
D．besides

单项选择题

Marvin Minsky is famous (1) the father of Artificial Intelligence, but he was (2) the author of another signal achievement. In the 1950s, he built a revolutionary light microscope that enabled him to (3) successfully deeper layer in a specimen with astonishing clearness, (4) first having to undertake the hard task of cutting the specimen into thin (5) Minsky’s invention did not (6) wide praise from the public at that time. (7) , when he patented(申请专利权) his "double - focusing stage-scanning microscope" in 1961, (8) people understood what it could do. During the 17-year life of the patent, no (9) of similar design were manufactured. (10) for his newly invented optics, Minsky (11) on to other challen- ges, leaving his intention to rust in a (12) of his basement.
Thirteen years later his approach (13) known as confocal microscopy(双焦显微镜学) caught public attention. (14) , the technology is proving to be one of the most exciting advances in optical microscopy in this century. The extent (15) which current interest was sparked by rediscovery of Minsky’s early (16) is not completely clear. (17) , the happy result is that scores of (18) kinds of confocal microscopes are now (19) in form that (20) from easy to complicated.

A．For
B．Indeed
C．Generally
D．Nevertheless

单项选择题

AIDS threatens not only lives butalso—in poor countries—economic development. By (1) mainly at adults 20 to 49 years old, AIDS robs these societies (2) some of their most productive citizens. Ignorance and fear of the disease can (3) families and communities and may even strain political relations between nations.
Because AIDS is a worldwide epidemic (传染病，流行病), nothing (4) than a worldwide effort can control and perhaps some day wipe the disease. Governments must (5) by fully informing their citizens (6) the epidemic and, most important, by telling people (7) actions they can take to prevent infection (感染 ). Public health agencies must also insure that blood transfusions(输血) and (8) are safe. Those already infected should receive (9) attention so they do not spread the virus to (10) .
The US government has committed more than two billion dollars to fight (11) AIDS in 1989—including more than 600 million dollars for research. The screening of blood (12) has already ensured the safety of blood supplies in the US, and American military personnel are required to take (13) blood tests. Public health groups have carried (14) AIDS educatior programs aimed particularly at homo- sexuals, (15) addicts and others whose behavior makes them highly susceptible (易受影响的) (16) the virus US government agencies are also (17) public health authorities throughout the developing world in their efforts to (18) the spread of the AIDS virus and to treat those afflicted with the disease. Given the rapid spread of the disease and the number of people now (19) , the battle against AIDS will be difficult to win. But it’s a battle the world cannot (20) to lose.

A．assorting
B．resisting
C．insisting
D．assisting

单项选择题

The horse and carriage is a thing of the past, but love and marriage are still with us and still closely interrelated. Most American marriages, (1) first marriages uniting young people, are the result of mutual attraction and affection (2) than practical considerations.
In the United States, parents do not (3) marriages for their children. Teenagers begin dating in high school and usually find mates through their own academic and social (4) .
(5) young people feel free to choose their friends from (6) groups, most choose a mate of similar (7) .
This is due in part to parental guidance. Parents cannot (8) spouses (配偶 ) for their children, but they can usually (9) choices by voicing disapproval of someone they consider unsuitable.
(10) , marriages between members of different groups (interclass, interfaith, and interracial marriages) are (11) probably because of the greater mobility of today’s youth and the fact that they are (12) by fewer prejudices than their parents. Many young people leave their hometowns to attend college, serve in the armed forces, (13) pursue a career in a bigger city.
Once away from home and family, they are more (14) to date and marry outside their own social group.
In mobile American society, inter- class marriages are neither (15) nor astoni- shing. Interfaith marriages are (16) the rise, especially between Protestants (基督教徒) and Catholics (天主教徒). On the other hand, interracial marriages are still very (17) . It can be difficult for interracial couples to find a place to live, maintain friendships, and (18) a family. Marriages between people of different national (19) (but the same race and religion) have been commonplace here (20) colonial times.

A．normal
B．uncommon
C．ordinary
D．usual

单项选择题

American teenagers have always worked for extra pocket money. More than their predecessors (前辈), today’s young people are (1) to work long hours during the week for hundreds of dollars each months. They spend the money (2) themselves rather than contributing it (3) their families. In a 1997 (4) of 16,000 high school seniors nationwide, it was (5) that eighty percent of students who worked (6) their earnings on their own needs, (7) as clothing, stereo equipment, records and movies. (8) five percent said they contributed most of their income, (9) often exceeded 200 a month, to help pay family living (10) .
The benefits of this work-and- spend ethics (伦理观) are being (11) argued. Some experts, and many parents, (12) that year-round part-time employment increases youngsters’ (13) of worth, teaches them (14) responsibility and reduces tension, and thus conflict(冲突) (15) the family.
Others, (16) , argue that working teenagers are separated, physically and financially, (17) their families, which in tum (18) parental authority.
Teenagers’ schoolwork can also suffer."When youngsters (19) for luxuries, they are buying distraction (20) education," said a program director for the U.S. Department of Education. Working teenagers them- selves say they have less time to spend with their friends and families.

A．in
B．with
C．from
D．by

单项选择题

Marvin Minsky is famous (1) the father of Artificial Intelligence, but he was (2) the author of another signal achievement. In the 1950s, he built a revolutionary light microscope that enabled him to (3) successfully deeper layer in a specimen with astonishing clearness, (4) first having to undertake the hard task of cutting the specimen into thin (5) Minsky’s invention did not (6) wide praise from the public at that time. (7) , when he patented(申请专利权) his "double - focusing stage-scanning microscope" in 1961, (8) people understood what it could do. During the 17-year life of the patent, no (9) of similar design were manufactured. (10) for his newly invented optics, Minsky (11) on to other challen- ges, leaving his intention to rust in a (12) of his basement.
Thirteen years later his approach (13) known as confocal microscopy(双焦显微镜学) caught public attention. (14) , the technology is proving to be one of the most exciting advances in optical microscopy in this century. The extent (15) which current interest was sparked by rediscovery of Minsky’s early (16) is not completely clear. (17) , the happy result is that scores of (18) kinds of confocal microscopes are now (19) in form that (20) from easy to complicated.

A．same
B．different
C．opposite
D．contrary

单项选择题

The horse and carriage is a thing of the past, but love and marriage are still with us and still closely interrelated. Most American marriages, (1) first marriages uniting young people, are the result of mutual attraction and affection (2) than practical considerations.
In the United States, parents do not (3) marriages for their children. Teenagers begin dating in high school and usually find mates through their own academic and social (4) .
(5) young people feel free to choose their friends from (6) groups, most choose a mate of similar (7) .
This is due in part to parental guidance. Parents cannot (8) spouses (配偶 ) for their children, but they can usually (9) choices by voicing disapproval of someone they consider unsuitable.
(10) , marriages between members of different groups (interclass, interfaith, and interracial marriages) are (11) probably because of the greater mobility of today’s youth and the fact that they are (12) by fewer prejudices than their parents. Many young people leave their hometowns to attend college, serve in the armed forces, (13) pursue a career in a bigger city.
Once away from home and family, they are more (14) to date and marry outside their own social group.
In mobile American society, inter- class marriages are neither (15) nor astoni- shing. Interfaith marriages are (16) the rise, especially between Protestants (基督教徒) and Catholics (天主教徒). On the other hand, interracial marriages are still very (17) . It can be difficult for interracial couples to find a place to live, maintain friendships, and (18) a family. Marriages between people of different national (19) (but the same race and religion) have been commonplace here (20) colonial times.

A．raise
B．settle
C．grow
D．unite

单项选择题

AIDS threatens not only lives butalso—in poor countries—economic development. By (1) mainly at adults 20 to 49 years old, AIDS robs these societies (2) some of their most productive citizens. Ignorance and fear of the disease can (3) families and communities and may even strain political relations between nations.
Because AIDS is a worldwide epidemic (传染病，流行病), nothing (4) than a worldwide effort can control and perhaps some day wipe the disease. Governments must (5) by fully informing their citizens (6) the epidemic and, most important, by telling people (7) actions they can take to prevent infection (感染 ). Public health agencies must also insure that blood transfusions(输血) and (8) are safe. Those already infected should receive (9) attention so they do not spread the virus to (10) .
The US government has committed more than two billion dollars to fight (11) AIDS in 1989—including more than 600 million dollars for research. The screening of blood (12) has already ensured the safety of blood supplies in the US, and American military personnel are required to take (13) blood tests. Public health groups have carried (14) AIDS educatior programs aimed particularly at homo- sexuals, (15) addicts and others whose behavior makes them highly susceptible (易受影响的) (16) the virus US government agencies are also (17) public health authorities throughout the developing world in their efforts to (18) the spread of the AIDS virus and to treat those afflicted with the disease. Given the rapid spread of the disease and the number of people now (19) , the battle against AIDS will be difficult to win. But it’s a battle the world cannot (20) to lose.

A．protect
B．prevention
C．combat
D．deal

单项选择题

American teenagers have always worked for extra pocket money. More than their predecessors (前辈), today’s young people are (1) to work long hours during the week for hundreds of dollars each months. They spend the money (2) themselves rather than contributing it (3) their families. In a 1997 (4) of 16,000 high school seniors nationwide, it was (5) that eighty percent of students who worked (6) their earnings on their own needs, (7) as clothing, stereo equipment, records and movies. (8) five percent said they contributed most of their income, (9) often exceeded 200 a month, to help pay family living (10) .
The benefits of this work-and- spend ethics (伦理观) are being (11) argued. Some experts, and many parents, (12) that year-round part-time employment increases youngsters’ (13) of worth, teaches them (14) responsibility and reduces tension, and thus conflict(冲突) (15) the family.
Others, (16) , argue that working teenagers are separated, physically and financially, (17) their families, which in tum (18) parental authority.
Teenagers’ schoolwork can also suffer."When youngsters (19) for luxuries, they are buying distraction (20) education," said a program director for the U.S. Department of Education. Working teenagers them- selves say they have less time to spend with their friends and families.

A．weakens
B．loses
C．reduces
D．destroys

单项选择题

Marvin Minsky is famous (1) the father of Artificial Intelligence, but he was (2) the author of another signal achievement. In the 1950s, he built a revolutionary light microscope that enabled him to (3) successfully deeper layer in a specimen with astonishing clearness, (4) first having to undertake the hard task of cutting the specimen into thin (5) Minsky’s invention did not (6) wide praise from the public at that time. (7) , when he patented(申请专利权) his "double - focusing stage-scanning microscope" in 1961, (8) people understood what it could do. During the 17-year life of the patent, no (9) of similar design were manufactured. (10) for his newly invented optics, Minsky (11) on to other challen- ges, leaving his intention to rust in a (12) of his basement.
Thirteen years later his approach (13) known as confocal microscopy(双焦显微镜学) caught public attention. (14) , the technology is proving to be one of the most exciting advances in optical microscopy in this century. The extent (15) which current interest was sparked by rediscovery of Minsky’s early (16) is not completely clear. (17) , the happy result is that scores of (18) kinds of confocal microscopes are now (19) in form that (20) from easy to complicated.

A．desirable
B．considerable
C．available
D．reliable

单项选择题

The horse and carriage is a thing of the past, but love and marriage are still with us and still closely interrelated. Most American marriages, (1) first marriages uniting young people, are the result of mutual attraction and affection (2) than practical considerations.
In the United States, parents do not (3) marriages for their children. Teenagers begin dating in high school and usually find mates through their own academic and social (4) .
(5) young people feel free to choose their friends from (6) groups, most choose a mate of similar (7) .
This is due in part to parental guidance. Parents cannot (8) spouses (配偶 ) for their children, but they can usually (9) choices by voicing disapproval of someone they consider unsuitable.
(10) , marriages between members of different groups (interclass, interfaith, and interracial marriages) are (11) probably because of the greater mobility of today’s youth and the fact that they are (12) by fewer prejudices than their parents. Many young people leave their hometowns to attend college, serve in the armed forces, (13) pursue a career in a bigger city.
Once away from home and family, they are more (14) to date and marry outside their own social group.
In mobile American society, inter- class marriages are neither (15) nor astoni- shing. Interfaith marriages are (16) the rise, especially between Protestants (基督教徒) and Catholics (天主教徒). On the other hand, interracial marriages are still very (17) . It can be difficult for interracial couples to find a place to live, maintain friendships, and (18) a family. Marriages between people of different national (19) (but the same race and religion) have been commonplace here (20) colonial times.

A．source
B．convention
C．origin
D．immigrant

单项选择题

AIDS threatens not only lives butalso—in poor countries—economic development. By (1) mainly at adults 20 to 49 years old, AIDS robs these societies (2) some of their most productive citizens. Ignorance and fear of the disease can (3) families and communities and may even strain political relations between nations.
Because AIDS is a worldwide epidemic (传染病，流行病), nothing (4) than a worldwide effort can control and perhaps some day wipe the disease. Governments must (5) by fully informing their citizens (6) the epidemic and, most important, by telling people (7) actions they can take to prevent infection (感染 ). Public health agencies must also insure that blood transfusions(输血) and (8) are safe. Those already infected should receive (9) attention so they do not spread the virus to (10) .
The US government has committed more than two billion dollars to fight (11) AIDS in 1989—including more than 600 million dollars for research. The screening of blood (12) has already ensured the safety of blood supplies in the US, and American military personnel are required to take (13) blood tests. Public health groups have carried (14) AIDS educatior programs aimed particularly at homo- sexuals, (15) addicts and others whose behavior makes them highly susceptible (易受影响的) (16) the virus US government agencies are also (17) public health authorities throughout the developing world in their efforts to (18) the spread of the AIDS virus and to treat those afflicted with the disease. Given the rapid spread of the disease and the number of people now (19) , the battle against AIDS will be difficult to win. But it’s a battle the world cannot (20) to lose.

A．affected
B．effective
C．affective
D．infected

单项选择题

American teenagers have always worked for extra pocket money. More than their predecessors (前辈), today’s young people are (1) to work long hours during the week for hundreds of dollars each months. They spend the money (2) themselves rather than contributing it (3) their families. In a 1997 (4) of 16,000 high school seniors nationwide, it was (5) that eighty percent of students who worked (6) their earnings on their own needs, (7) as clothing, stereo equipment, records and movies. (8) five percent said they contributed most of their income, (9) often exceeded 200 a month, to help pay family living (10) .
The benefits of this work-and- spend ethics (伦理观) are being (11) argued. Some experts, and many parents, (12) that year-round part-time employment increases youngsters’ (13) of worth, teaches them (14) responsibility and reduces tension, and thus conflict(冲突) (15) the family.
Others, (16) , argue that working teenagers are separated, physically and financially, (17) their families, which in tum (18) parental authority.
Teenagers’ schoolwork can also suffer."When youngsters (19) for luxuries, they are buying distraction (20) education," said a program director for the U.S. Department of Education. Working teenagers them- selves say they have less time to spend with their friends and families.

A．ask[B] make[C] do[

单项选择题

AIDS threatens not only lives butalso—in poor countries—economic development. By (1) mainly at adults 20 to 49 years old, AIDS robs these societies (2) some of their most productive citizens. Ignorance and fear of the disease can (3) families and communities and may even strain political relations between nations.
Because AIDS is a worldwide epidemic (传染病，流行病), nothing (4) than a worldwide effort can control and perhaps some day wipe the disease. Governments must (5) by fully informing their citizens (6) the epidemic and, most important, by telling people (7) actions they can take to prevent infection (感染 ). Public health agencies must also insure that blood transfusions(输血) and (8) are safe. Those already infected should receive (9) attention so they do not spread the virus to (10) .
The US government has committed more than two billion dollars to fight (11) AIDS in 1989—including more than 600 million dollars for research. The screening of blood (12) has already ensured the safety of blood supplies in the US, and American military personnel are required to take (13) blood tests. Public health groups have carried (14) AIDS educatior programs aimed particularly at homo- sexuals, (15) addicts and others whose behavior makes them highly susceptible (易受影响的) (16) the virus US government agencies are also (17) public health authorities throughout the developing world in their efforts to (18) the spread of the AIDS virus and to treat those afflicted with the disease. Given the rapid spread of the disease and the number of people now (19) , the battle against AIDS will be difficult to win. But it’s a battle the world cannot (20) to lose.

A．face
B．confront
C．afford
D．meet

单项选择题

Marvin Minsky is famous (1) the father of Artificial Intelligence, but he was (2) the author of another signal achievement. In the 1950s, he built a revolutionary light microscope that enabled him to (3) successfully deeper layer in a specimen with astonishing clearness, (4) first having to undertake the hard task of cutting the specimen into thin (5) Minsky’s invention did not (6) wide praise from the public at that time. (7) , when he patented(申请专利权) his "double - focusing stage-scanning microscope" in 1961, (8) people understood what it could do. During the 17-year life of the patent, no (9) of similar design were manufactured. (10) for his newly invented optics, Minsky (11) on to other challen- ges, leaving his intention to rust in a (12) of his basement.
Thirteen years later his approach (13) known as confocal microscopy(双焦显微镜学) caught public attention. (14) , the technology is proving to be one of the most exciting advances in optical microscopy in this century. The extent (15) which current interest was sparked by rediscovery of Minsky’s early (16) is not completely clear. (17) , the happy result is that scores of (18) kinds of confocal microscopes are now (19) in form that (20) from easy to complicated.

A．differ
B．extend
C．change
D．range

单项选择题

The horse and carriage is a thing of the past, but love and marriage are still with us and still closely interrelated. Most American marriages, (1) first marriages uniting young people, are the result of mutual attraction and affection (2) than practical considerations.
In the United States, parents do not (3) marriages for their children. Teenagers begin dating in high school and usually find mates through their own academic and social (4) .
(5) young people feel free to choose their friends from (6) groups, most choose a mate of similar (7) .
This is due in part to parental guidance. Parents cannot (8) spouses (配偶 ) for their children, but they can usually (9) choices by voicing disapproval of someone they consider unsuitable.
(10) , marriages between members of different groups (interclass, interfaith, and interracial marriages) are (11) probably because of the greater mobility of today’s youth and the fact that they are (12) by fewer prejudices than their parents. Many young people leave their hometowns to attend college, serve in the armed forces, (13) pursue a career in a bigger city.
Once away from home and family, they are more (14) to date and marry outside their own social group.
In mobile American society, inter- class marriages are neither (15) nor astoni- shing. Interfaith marriages are (16) the rise, especially between Protestants (基督教徒) and Catholics (天主教徒). On the other hand, interracial marriages are still very (17) . It can be difficult for interracial couples to find a place to live, maintain friendships, and (18) a family. Marriages between people of different national (19) (but the same race and religion) have been commonplace here (20) colonial times.

A．since
B．for
C．in
D．during

单项选择题

American teenagers have always worked for extra pocket money. More than their predecessors (前辈), today’s young people are (1) to work long hours during the week for hundreds of dollars each months. They spend the money (2) themselves rather than contributing it (3) their families. In a 1997 (4) of 16,000 high school seniors nationwide, it was (5) that eighty percent of students who worked (6) their earnings on their own needs, (7) as clothing, stereo equipment, records and movies. (8) five percent said they contributed most of their income, (9) often exceeded 200 a month, to help pay family living (10) .
The benefits of this work-and- spend ethics (伦理观) are being (11) argued. Some experts, and many parents, (12) that year-round part-time employment increases youngsters’ (13) of worth, teaches them (14) responsibility and reduces tension, and thus conflict(冲突) (15) the family.
Others, (16) , argue that working teenagers are separated, physically and financially, (17) their families, which in tum (18) parental authority.
Teenagers’ schoolwork can also suffer."When youngsters (19) for luxuries, they are buying distraction (20) education," said a program director for the U.S. Department of Education. Working teenagers them- selves say they have less time to spend with their friends and families.

A．from
B．with
C．in
D．on

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