With the broadband technology companie...

In the United States, 30 percent of the adult population has a "weight problem". To many people, the cause is obvious: they eat too much. But scientific evidence does little to support this idea. Going back to the America of the 1910s, we find that people were thinner than today, yet they ate more food. In those days people worked harder physically, walked more, used machines much less and didn’t watch television. Several modern studies, moreover, have shown that fatter people do not eat more on the average than thinner people. In fact, some investigations, such as the study of 3, 545 London office workers, report that, on balance, fat people eat less than slimmer people. Studies show that slim people are more active than fat people. A study by a research group at Stanford University School of Medicine found the following interesting facts: The more the men ran, the more body fat they lost. The more they ran, the greater amount of food they ate. Thus, those who ran the most ate the most, yet lost the greatest amount of body fat.The physical problem that many adult Americans have is that______.

A．they are too slim
B．they work too hard
C．they are too fat
D．they lose too much body fat

In the United States, 30 percent of the adult population has a "weight problem". To many people, the cause is obvious: they eat too much. But scientific evidence does little to support this idea. Going back to the America of the 1910s, we find that people were thinner than today, yet they ate more food. In those days people worked harder physically, walked more, used machines much less and didn’t watch television. Several modern studies, moreover, have shown that fatter people do not eat more on the average than thinner people. In fact, some investigations, such as the study of 3, 545 London office workers, report that, on balance, fat people eat less than slimmer people. Studies show that slim people are more active than fat people. A study by a research group at Stanford University School of Medicine found the following interesting facts: The more the men ran, the more body fat they lost. The more they ran, the greater amount of food they ate. Thus, those who ran the most ate the most, yet lost the greatest amount of body fat.According to the article, given 500 adult Americans, ______people will have a "weight problem".

In the United States, 30 percent of the adult population has a "weight problem". To many people, the cause is obvious: they eat too much. But scientific evidence does little to support this idea. Going back to the America of the 1910s, we find that people were thinner than today, yet they ate more food. In those days people worked harder physically, walked more, used machines much less and didn’t watch television. Several modern studies, moreover, have shown that fatter people do not eat more on the average than thinner people. In fact, some investigations, such as the study of 3, 545 London office workers, report that, on balance, fat people eat less than slimmer people. Studies show that slim people are more active than fat people. A study by a research group at Stanford University School of Medicine found the following interesting facts: The more the men ran, the more body fat they lost. The more they ran, the greater amount of food they ate. Thus, those who ran the most ate the most, yet lost the greatest amount of body fat.Is there any scientific evidence to support that eating too much is the cause of a " weight problem"

A．Yes, there is plenty of evidence.
B．Of course, there is some evidence to show this is true.
C．There is hardly any scientific evidence to support this.
D．We don’t know because the information is not given.

单项选择题

In the United States, 30 percent of the adult population has a "weight problem". To many people, the cause is obvious: they eat too much. But scientific evidence does little to support this idea. Going back to the America of the 1910s, we find that people were thinner than today, yet they ate more food. In those days people worked harder physically, walked more, used machines much less and didn’t watch television. Several modern studies, moreover, have shown that fatter people do not eat more on the average than thinner people. In fact, some investigations, such as the study of 3, 545 London office workers, report that, on balance, fat people eat less than slimmer people. Studies show that slim people are more active than fat people. A study by a research group at Stanford University School of Medicine found the following interesting facts: The more the men ran, the more body fat they lost. The more they ran, the greater amount of food they ate. Thus, those who ran the most ate the most, yet lost the greatest amount of body fat.In comparison with the adult American population today, the Americans of the 1910s______.

A．ate more food and had more physical activities
B．ate less food but had more activities
C．ate less food and had less physical exercise
D．had more weight problems

单项选择题

In the United States, 30 percent of the adult population has a "weight problem". To many people, the cause is obvious: they eat too much. But scientific evidence does little to support this idea. Going back to the America of the 1910s, we find that people were thinner than today, yet they ate more food. In those days people worked harder physically, walked more, used machines much less and didn’t watch television. Several modern studies, moreover, have shown that fatter people do not eat more on the average than thinner people. In fact, some investigations, such as the study of 3, 545 London office workers, report that, on balance, fat people eat less than slimmer people. Studies show that slim people are more active than fat people. A study by a research group at Stanford University School of Medicine found the following interesting facts: The more the men ran, the more body fat they lost. The more they ran, the greater amount of food they ate. Thus, those who ran the most ate the most, yet lost the greatest amount of body fat.Modern scientific researches have reported to us that______.

A．fat people eat less food and are less active
B．fat people eat more food than slim people and are more active
C．fat people eat more food than slim people but are less active
D．thin people run less, but have greater increase in food intake

单项选择题

The more time scientists spend designing computers, the more they wonder at human brain. Tasks that puzzle the most advanced supercomputer—recognizing a face, reading a handwritten note —are child’s play. Most important, unlike any ordinary computer, the brain can learn from its mistakes. Researchers have tried for years to program computers to imitate the brain’s abilities, but without success. Now a growing number of designers believe they have the answer: if a computer is to work more like a person and less like an overgrown calculator it must be built more like a brain, which distributes information across a vast interconnected web of nerve cells or neurons. Ordinary computers work by following a chainlike sequence of detailed instructions. Although very fast, their processors can perform only one task at a time. This approach works best in solving problems that can be broken down into simpler logical pieces. The processors in a neural-network computer, by contrast, form a network much like the nerve cells in the brain. Since these artificial(人造的)neurons are interconnected, they can share information and perform tasks at the same time. This two-dimensional approach works best at recognizing patterns. Instead of programming a neural-network computer to make decisions, its maker trains it to recognize patterns in any solution to a problem by repeatedly feeding examples to the machine. Neural networks come in all shapes and sizes. Until now most existed as software simulations(模拟品)because redesigning computer chips took a lot of time and money. By experimenting with different approaches through software rather than hardware, scientists have been able to avoid costly mistakes.It can be inferred from the first paragraph that a computer______.

A．can recognize a face
B．cannot learn from its mistakes
C．cannot follow detailed instructions
D．can read a handwritten note

单项选择题

The more time scientists spend designing computers, the more they wonder at human brain. Tasks that puzzle the most advanced supercomputer—recognizing a face, reading a handwritten note —are child’s play. Most important, unlike any ordinary computer, the brain can learn from its mistakes. Researchers have tried for years to program computers to imitate the brain’s abilities, but without success. Now a growing number of designers believe they have the answer: if a computer is to work more like a person and less like an overgrown calculator it must be built more like a brain, which distributes information across a vast interconnected web of nerve cells or neurons. Ordinary computers work by following a chainlike sequence of detailed instructions. Although very fast, their processors can perform only one task at a time. This approach works best in solving problems that can be broken down into simpler logical pieces. The processors in a neural-network computer, by contrast, form a network much like the nerve cells in the brain. Since these artificial(人造的)neurons are interconnected, they can share information and perform tasks at the same time. This two-dimensional approach works best at recognizing patterns. Instead of programming a neural-network computer to make decisions, its maker trains it to recognize patterns in any solution to a problem by repeatedly feeding examples to the machine. Neural networks come in all shapes and sizes. Until now most existed as software simulations(模拟品)because redesigning computer chips took a lot of time and money. By experimenting with different approaches through software rather than hardware, scientists have been able to avoid costly mistakes.Which of the following is NOT true about an ordinary computer

A．It must be programmed before it works.
B．It can only solve one problem at a time.
C．It is good at solving problems that can be broken down into simpler logical pieces.
D．It is trained to make decisions.

单项选择题

Broadband technology is seen as the key to the new digital economy. In this rapidly changing world, media and technology information can be sent via phone calls and downloads like music, graphics, business information or films. The simpler the information, the smaller the package and the narrower the bandwidth needed to deliver it. Broadband is used for high speed Internet connections at a fixed monthly rate. It turns an existing telephone line into a high speed digital line capable of carrying data up to 40 times conventional modem speeds. Any download is available at the click of a mouse—there is no dial-up as there is with standard Internet Service Providers. For home owners and families there are many advantages. One of the most important is simultaneous(同时的)access to both telephone lines and the Internet. No queues and no delay. For businesses, broadband can improve customer relations and provide direct access to corporate e-mails and databases. Entire operations can go online.The function that broadband technology has on the new digital economy is______.

A．further
B．critical
C．costly
D．global

单项选择题

The more time scientists spend designing computers, the more they wonder at human brain. Tasks that puzzle the most advanced supercomputer—recognizing a face, reading a handwritten note —are child’s play. Most important, unlike any ordinary computer, the brain can learn from its mistakes. Researchers have tried for years to program computers to imitate the brain’s abilities, but without success. Now a growing number of designers believe they have the answer: if a computer is to work more like a person and less like an overgrown calculator it must be built more like a brain, which distributes information across a vast interconnected web of nerve cells or neurons. Ordinary computers work by following a chainlike sequence of detailed instructions. Although very fast, their processors can perform only one task at a time. This approach works best in solving problems that can be broken down into simpler logical pieces. The processors in a neural-network computer, by contrast, form a network much like the nerve cells in the brain. Since these artificial(人造的)neurons are interconnected, they can share information and perform tasks at the same time. This two-dimensional approach works best at recognizing patterns. Instead of programming a neural-network computer to make decisions, its maker trains it to recognize patterns in any solution to a problem by repeatedly feeding examples to the machine. Neural networks come in all shapes and sizes. Until now most existed as software simulations(模拟品)because redesigning computer chips took a lot of time and money. By experimenting with different approaches through software rather than hardware, scientists have been able to avoid costly mistakes.The main feature of a neural-network computer is that______.

A．its processors act as an interconnected web of neurons
B．it is programmed to make decisions
C．its networks are of all shapes and sizes
D．its neurons are artificial

单项选择题

Broadband technology is seen as the key to the new digital economy. In this rapidly changing world, media and technology information can be sent via phone calls and downloads like music, graphics, business information or films. The simpler the information, the smaller the package and the narrower the bandwidth needed to deliver it. Broadband is used for high speed Internet connections at a fixed monthly rate. It turns an existing telephone line into a high speed digital line capable of carrying data up to 40 times conventional modem speeds. Any download is available at the click of a mouse—there is no dial-up as there is with standard Internet Service Providers. For home owners and families there are many advantages. One of the most important is simultaneous(同时的)access to both telephone lines and the Internet. No queues and no delay. For businesses, broadband can improve customer relations and provide direct access to corporate e-mails and databases. Entire operations can go online.How much does a user pay if he has broadband technology installed

A．It depends on the length of time.
B．It depends on the times of dial-up.
C．He pays at a fixed monthly rate.
D．He pays a lot of money.

单项选择题

Americans this year will swallow 15000 tons of aspirin, one of the safest and most effective drugs invented by man. As the most popular medicine in the world today, it is an effective pain reliever. Its bad effects are relatively mild, and it is cheap. Although aspirin was first sold by a German company in 1899, it has been around much longer than that. Hippocrates, in ancient Greece, understood the medical value of the leaves and tree bark which today are known to contain salicylates , the chemical in aspirin. During the 19th century there was a great deal of experimentation in Europe with this chemical, and it led to the introduction of aspirin. By 1915, aspirin tablets(片剂)were available in the United States. For millions of people suffering from arthritis, aspirin is the only thing that works. A small quantity of aspirin relieves pain and inflammation. It also reduces fever by interfering with some of the body’s reactions. Aspirin, in short, is truly the 20th-century wonder drug. On the other hand, it is also the second largest suicide drug and is the leading cause of poisoning among children. It has side effects that, although relatively mild, are largely unrecognized among users. Aspirin is very irritating to the stomach lining, and many aspirin takers complain about upset stomach. There is a right way and a wrong way to take aspirin. The best way is to chew the tablets before swallowing them with water, but few people can stand the bitter taste. Some people suggest crushing the tablets in milk or orange juice and drinking that.This article discusses______.

A．the multiple functions of aspirin
B．how and why aspirin was invented
C．the history and the features of aspirin
D．how to take aspirin properly

单项选择题

Broadband technology is seen as the key to the new digital economy. In this rapidly changing world, media and technology information can be sent via phone calls and downloads like music, graphics, business information or films. The simpler the information, the smaller the package and the narrower the bandwidth needed to deliver it. Broadband is used for high speed Internet connections at a fixed monthly rate. It turns an existing telephone line into a high speed digital line capable of carrying data up to 40 times conventional modem speeds. Any download is available at the click of a mouse—there is no dial-up as there is with standard Internet Service Providers. For home owners and families there are many advantages. One of the most important is simultaneous(同时的)access to both telephone lines and the Internet. No queues and no delay. For businesses, broadband can improve customer relations and provide direct access to corporate e-mails and databases. Entire operations can go online.Compared with the modem speed the broadband technology can transmit data______.

A．at up to forty times of ordinary speed
B．much more faster
C．at a high speed
D．within a second

单项选择题

The more time scientists spend designing computers, the more they wonder at human brain. Tasks that puzzle the most advanced supercomputer—recognizing a face, reading a handwritten note —are child’s play. Most important, unlike any ordinary computer, the brain can learn from its mistakes. Researchers have tried for years to program computers to imitate the brain’s abilities, but without success. Now a growing number of designers believe they have the answer: if a computer is to work more like a person and less like an overgrown calculator it must be built more like a brain, which distributes information across a vast interconnected web of nerve cells or neurons. Ordinary computers work by following a chainlike sequence of detailed instructions. Although very fast, their processors can perform only one task at a time. This approach works best in solving problems that can be broken down into simpler logical pieces. The processors in a neural-network computer, by contrast, form a network much like the nerve cells in the brain. Since these artificial(人造的)neurons are interconnected, they can share information and perform tasks at the same time. This two-dimensional approach works best at recognizing patterns. Instead of programming a neural-network computer to make decisions, its maker trains it to recognize patterns in any solution to a problem by repeatedly feeding examples to the machine. Neural networks come in all shapes and sizes. Until now most existed as software simulations(模拟品)because redesigning computer chips took a lot of time and money. By experimenting with different approaches through software rather than hardware, scientists have been able to avoid costly mistakes.The expression "this two-dimensional approach" in the second paragraph refers to______.

A．the conventional computer and the neural computer
B．making decisions and recognizing patterns
C．sharing information and performing tasks
D．the computer and the human brain

单项选择题

Americans this year will swallow 15000 tons of aspirin, one of the safest and most effective drugs invented by man. As the most popular medicine in the world today, it is an effective pain reliever. Its bad effects are relatively mild, and it is cheap. Although aspirin was first sold by a German company in 1899, it has been around much longer than that. Hippocrates, in ancient Greece, understood the medical value of the leaves and tree bark which today are known to contain salicylates , the chemical in aspirin. During the 19th century there was a great deal of experimentation in Europe with this chemical, and it led to the introduction of aspirin. By 1915, aspirin tablets(片剂)were available in the United States. For millions of people suffering from arthritis, aspirin is the only thing that works. A small quantity of aspirin relieves pain and inflammation. It also reduces fever by interfering with some of the body’s reactions. Aspirin, in short, is truly the 20th-century wonder drug. On the other hand, it is also the second largest suicide drug and is the leading cause of poisoning among children. It has side effects that, although relatively mild, are largely unrecognized among users. Aspirin is very irritating to the stomach lining, and many aspirin takers complain about upset stomach. There is a right way and a wrong way to take aspirin. The best way is to chew the tablets before swallowing them with water, but few people can stand the bitter taste. Some people suggest crushing the tablets in milk or orange juice and drinking that.According to the second paragraph, salicylates is______.

A．leaves and tree barks
B．the old name of aspirin
C．the name of a US company
D．a component of aspirin

单项选择题

Broadband technology is seen as the key to the new digital economy. In this rapidly changing world, media and technology information can be sent via phone calls and downloads like music, graphics, business information or films. The simpler the information, the smaller the package and the narrower the bandwidth needed to deliver it. Broadband is used for high speed Internet connections at a fixed monthly rate. It turns an existing telephone line into a high speed digital line capable of carrying data up to 40 times conventional modem speeds. Any download is available at the click of a mouse—there is no dial-up as there is with standard Internet Service Providers. For home owners and families there are many advantages. One of the most important is simultaneous(同时的)access to both telephone lines and the Internet. No queues and no delay. For businesses, broadband can improve customer relations and provide direct access to corporate e-mails and databases. Entire operations can go online.Who can take advantage of the broadband technology according to the passage

A．Family members.
B．College students.
C．Both home owners and businessmen.
D．Only businessmen and their partners.

单项选择题

The more time scientists spend designing computers, the more they wonder at human brain. Tasks that puzzle the most advanced supercomputer—recognizing a face, reading a handwritten note —are child’s play. Most important, unlike any ordinary computer, the brain can learn from its mistakes. Researchers have tried for years to program computers to imitate the brain’s abilities, but without success. Now a growing number of designers believe they have the answer: if a computer is to work more like a person and less like an overgrown calculator it must be built more like a brain, which distributes information across a vast interconnected web of nerve cells or neurons. Ordinary computers work by following a chainlike sequence of detailed instructions. Although very fast, their processors can perform only one task at a time. This approach works best in solving problems that can be broken down into simpler logical pieces. The processors in a neural-network computer, by contrast, form a network much like the nerve cells in the brain. Since these artificial(人造的)neurons are interconnected, they can share information and perform tasks at the same time. This two-dimensional approach works best at recognizing patterns. Instead of programming a neural-network computer to make decisions, its maker trains it to recognize patterns in any solution to a problem by repeatedly feeding examples to the machine. Neural networks come in all shapes and sizes. Until now most existed as software simulations(模拟品)because redesigning computer chips took a lot of time and money. By experimenting with different approaches through software rather than hardware, scientists have been able to avoid costly mistakes.Scientists use software rather than hardware in their experiments because______.

A．it can avoid redesigning computer chips
B．it can save a lot of time and money
C．it can avoid making mistakes
D．it is more like the human brain

单项选择题

Broadband technology is seen as the key to the new digital economy. In this rapidly changing world, media and technology information can be sent via phone calls and downloads like music, graphics, business information or films. The simpler the information, the smaller the package and the narrower the bandwidth needed to deliver it. Broadband is used for high speed Internet connections at a fixed monthly rate. It turns an existing telephone line into a high speed digital line capable of carrying data up to 40 times conventional modem speeds. Any download is available at the click of a mouse—there is no dial-up as there is with standard Internet Service Providers. For home owners and families there are many advantages. One of the most important is simultaneous(同时的)access to both telephone lines and the Internet. No queues and no delay. For businesses, broadband can improve customer relations and provide direct access to corporate e-mails and databases. Entire operations can go online.With the broadband technology companies can have all their operations done

A．during the work days.
B．during the whole week
C．online
D．offline

单项选择题

Americans this year will swallow 15000 tons of aspirin, one of the safest and most effective drugs invented by man. As the most popular medicine in the world today, it is an effective pain reliever. Its bad effects are relatively mild, and it is cheap. Although aspirin was first sold by a German company in 1899, it has been around much longer than that. Hippocrates, in ancient Greece, understood the medical value of the leaves and tree bark which today are known to contain salicylates , the chemical in aspirin. During the 19th century there was a great deal of experimentation in Europe with this chemical, and it led to the introduction of aspirin. By 1915, aspirin tablets(片剂)were available in the United States. For millions of people suffering from arthritis, aspirin is the only thing that works. A small quantity of aspirin relieves pain and inflammation. It also reduces fever by interfering with some of the body’s reactions. Aspirin, in short, is truly the 20th-century wonder drug. On the other hand, it is also the second largest suicide drug and is the leading cause of poisoning among children. It has side effects that, although relatively mild, are largely unrecognized among users. Aspirin is very irritating to the stomach lining, and many aspirin takers complain about upset stomach. There is a right way and a wrong way to take aspirin. The best way is to chew the tablets before swallowing them with water, but few people can stand the bitter taste. Some people suggest crushing the tablets in milk or orange juice and drinking that.Which symptom can NOT be treated by aspirin

A．Fever.
B．Reactions.
C．Pain.
D．Inflammation.

单项选择题

Americans this year will swallow 15000 tons of aspirin, one of the safest and most effective drugs invented by man. As the most popular medicine in the world today, it is an effective pain reliever. Its bad effects are relatively mild, and it is cheap. Although aspirin was first sold by a German company in 1899, it has been around much longer than that. Hippocrates, in ancient Greece, understood the medical value of the leaves and tree bark which today are known to contain salicylates , the chemical in aspirin. During the 19th century there was a great deal of experimentation in Europe with this chemical, and it led to the introduction of aspirin. By 1915, aspirin tablets(片剂)were available in the United States. For millions of people suffering from arthritis, aspirin is the only thing that works. A small quantity of aspirin relieves pain and inflammation. It also reduces fever by interfering with some of the body’s reactions. Aspirin, in short, is truly the 20th-century wonder drug. On the other hand, it is also the second largest suicide drug and is the leading cause of poisoning among children. It has side effects that, although relatively mild, are largely unrecognized among users. Aspirin is very irritating to the stomach lining, and many aspirin takers complain about upset stomach. There is a right way and a wrong way to take aspirin. The best way is to chew the tablets before swallowing them with water, but few people can stand the bitter taste. Some people suggest crushing the tablets in milk or orange juice and drinking that.It can be inferred from the last paragraph that the best way to take aspirin is to take it______.

A．with bitter water
B．with orange juice
C．in tablet form
D．in powder form

单项选择题

Americans this year will swallow 15000 tons of aspirin, one of the safest and most effective drugs invented by man. As the most popular medicine in the world today, it is an effective pain reliever. Its bad effects are relatively mild, and it is cheap. Although aspirin was first sold by a German company in 1899, it has been around much longer than that. Hippocrates, in ancient Greece, understood the medical value of the leaves and tree bark which today are known to contain salicylates , the chemical in aspirin. During the 19th century there was a great deal of experimentation in Europe with this chemical, and it led to the introduction of aspirin. By 1915, aspirin tablets(片剂)were available in the United States. For millions of people suffering from arthritis, aspirin is the only thing that works. A small quantity of aspirin relieves pain and inflammation. It also reduces fever by interfering with some of the body’s reactions. Aspirin, in short, is truly the 20th-century wonder drug. On the other hand, it is also the second largest suicide drug and is the leading cause of poisoning among children. It has side effects that, although relatively mild, are largely unrecognized among users. Aspirin is very irritating to the stomach lining, and many aspirin takers complain about upset stomach. There is a right way and a wrong way to take aspirin. The best way is to chew the tablets before swallowing them with water, but few people can stand the bitter taste. Some people suggest crushing the tablets in milk or orange juice and drinking that.The author of this article seems to be______.

A．against the use of aspirin
B．in favour of aspirin
C．doubtful about aspirin
D．not interested in aspirin

你可能感兴趣的试题