Wilson suggests that one way to keep b...

A
For many parents, raising a teenager is like fighting a long war, but years go by without any clear winner. Like a border conflict between neighboring countries, the parent-teen war is about boundaries: Where is the line between what I control and what you do
Both sides want peace, but neither feels it has any power to stop the conflict. In part, this is because neither is willing to admit any responsibility for starting it. From the parents’ point of view, the only cause of their fight is their adolescents’complete unreasonableness. And of course, the teens see it in exactly the same way, except oppositely. Both feel trapped.
In this article. I’ll describe three no-win situations that commonly arise between teens and parents and then suggest some ways out of the trap. The first no - win situation is quarrels over unimportant things. Examples include the color of the teen’s hair, the cleanliness of the bedroom, the preferred style of clothing, the child’s failure to eat a good breakfast before school, or his tendency to sleep until noon on the weekends. Second, blaming. The goal of a blaming battle is to make the other admit that his bad attitude is the reason why everything goes wrong. Third, needing to be right, it doesn’t matter what the topic is politics, the laws of physics, or the proper way to break an egg—the point of these arguments is to prove that you are right and the other person is wrong, for both wish to be considered an authority someone who actually knows something and therefore to command respect. Unfortunately, as long as parents and teens continue to assume that they know more than the other, they’ll continue to fight these battles forever and never make any real progress.Why does the author compare the parent-teen war to a border conflict

A.Because both can continue for generations.
B.Because both are about where to draw the line.
C.Because neither has any clear winner.
D.Because neither can be put to an end.

单项选择题

B
Edward Wilson is America’s, if not the world’s, leading naturalist. In The Future of Life, he takes us on a tour of the world’s natural resources(资源). How are they used What has been lost What remains and is it able to continue with the present speed of use Wilson also points out the need to understand fully the biodiversity(生物多样性) of our earth.
Wilson begins with an open letter to the pioneer in environment (环境)protection, Henry David Thoreau. He compares today’s Walden Pond with that of Thoreau’s day. Wilson will use such comparisons for the rest of the book. The problem is clear: man has done great damage to his home over the years. Van the earth, with human help, be made to return to biodiversity levels that will be able to support us in the future
Biodiversity, Wilson argues, is the key to settling many problems the earth faces today. Even our agricultural crops can gain advantages from it. A mere hundred species(物种) are the basis of our food supply, of which but twenty carry the load. Wilson suggests changing this situation by looking into ten thousand species that could be made use of, which will be a way to reduce the clearing of the natural homes of plants and animals to enlarge farming areas.
At the end of the book, Wilson discusses the importance of human values in considering the environment. If you are to continue to live on the earth, you may well read and act on the ideas in this book.We learn from the text that Wilson cares most about ______.

A.the environment for plants
B.the biodiversity of our earth
C.the wastes of natural resources
D.the importance of human values

单项选择题

C
Below is a housing guide for students going to London. University accommodation (住所) offices
Many university accommodation offices have their own list of registered landlords (房东). Others also provide information on accommodation agencies and other housing organization. The advantage of using your university accommodation is that you can get support if you have a problem. The disadvantage is that they are unlikely to have enough registered landlords to houses all their students.
Property papers: Loot and Renting
Loot is an important source (来源) of information about private housing for co-renters. The offers are from private landlords, agencies and individuals looking for other co-renters. They also have a website: www. loot. com. The advantage of using Loot is that there are some excellent bargains. The disadvantage is that there is no quality control over the offers.
Renting is another useful paper. The offers in this paper are mainly from accommodation agencies. Their website is at www. renting, co. uk.
Accommodation agencies
The majority of rented accommodation in London is probably advertised through accommodation agencies. The advantage of using accommodation agencies is that you will have access to a large number of accommodations. A good agent will listen to your requirements and can save your time in looking for the right accommodation. The disadvantage is that they will make a range of charges to potential renters.
Noticeboards
Around the universities you will find a number of noticeboards where offers of accommodation will be posted. These will either be from landlords or from students. Some universities will also have online noticeboards where students can advertise to other students. Advertisements from students can be an excellent way to find accommodation. However, advertisements from landlords can be problematic.
Word of mouth
Some of the best housing in London is never advertised but is passed on from one group of students to another by word of mouth. It might be that you can find out about good offers from final year students. However, don’t suppose that just because you have found out about housing from a friend it is necessarily going to be better than that found through any other source.
Family
Faced with the very high rents charged in London, some students and their parents will consider buying as an alternative. In some cases this might be a good choice.What is the advantage of using Loot

A.It has more offers from accommodation agencies than Renting.
B.It gives you personal information about other co-renters.
C.Their website is designed mainly for students.
D.There are some good bargains.

单项选择题

D
Stop Spam!
When I first got an e-mail account ten years ago, I received communications only from family, friends, and colleagues. Now it seems that every time I check my e-mail, I have an endless series of advertisements and other correspondence that do not interest me at all. If we want e-mails to continue to be useful, we need specific laws that make spamming(发送垃圾邮件) a crime.
If law makers do not do something soon to prohibit spam, the problem will certainly get much worse. Computer programs allow spammers to send hundreds of millions of e-mails almost instantly. As more and more advertisers turn to spare to sell their products, individual(个人的) e-mail boxes are often flooded with spam e-mails. Would people continue to use e-mail if they had to deal with an annoying amount of spare each time
This problem is troubling for individuals and companies as well. Many spare e-mails contain computer viruses that can shut down the entire network of a company. Companies rely on e-mails for their employees to communicate with each other. Spam frequently causes failures in their local communications networks, and their employees are thus unable to communicate effectively. Such a situation results in a loss of productivity and requires companies to repeatedly repair their networks. These computer problems raise production costs of companies, which are, in the end, passes on to the consumer.
For these reasons, I believe that lawmakers need to legislate (立法) against spam. Spammers should be fined, and perhaps sent to prison if they continue to disturb people. E-mail is a tool which helps people all over the world to communicate conveniently, but spam is destroying this convenience.What does the underlined word "correspondence" in the Paragraph 1 probably mean

A.Messages
B.Ideas
C.Connections
D.Programs

单项选择题

E
Have you winterized your horse yet Even though global warming may have made our climate more mild, many animals are still hibernating(冬眠). It’s too bad that humans can’t hibernate. In fact, as a species, we almost did.
Apparently, at times in the past, peasants in France liked a semi-state of human hibernation. So writes Graham Robb, a British scholar who has studied the sleeping habits of the French peasants. As soon as the weather turned cold people all over France shut themselves away and practiced the forgotten art of doing nothing at all for months on end.
In line with this, Jeff Warren, a producer at CBC Radio’s The Current, tells us that the way we sleep has changed fundamentally since the invention of artificial (人造的) lighting and the electric bulb.
When historians began studying texts of the Middle Ages, they noticed something referred to as "first sleep", which was not clarified, though. Now scientists are telling us our ancestors most likely slept in separate periods. The business of eight hours’ uninterrupted sleep is a modem invention.
In the past, without the artificial light of the city to bathe in, humans went to sleep when it became dark and then woke themselves around midnight. The late night period was known as "The Watch". It was when people actually kept watch against wild animals, although many of them simply moved around or visited family and neighbours.
According to some sleep researchers, a short period of insomnia (失眠) at midnight is not a disorder. It is normal. Humans can experience another state of consciousness around their sleeping, which occurs in the brief period before we fall asleep or wake ourselves in the morning. This period can be an extraordinarily creative time for some people. The impressive inventor, Thomas Edison, used this state to hit upon many of his new ideas.
Playing with your sleep rhythms can be adventurous, as anxiety may set in. Medical science doesn’t help much in this case. It offers us medicines for a full night’s continuous sleep, which sounds natural; however, according to Warren’s theory, it is really the opposite of what we need.The late night was called "The Watch" because it was a time for people ______.

A.to set traps to catch animals
B.to wake up their family and neighbours
C.to remind others of the time
D.to guard against possible dangers

单项选择题

A
For many parents, raising a teenager is like fighting a long war, but years go by without any clear winner. Like a border conflict between neighboring countries, the parent-teen war is about boundaries: Where is the line between what I control and what you do
Both sides want peace, but neither feels it has any power to stop the conflict. In part, this is because neither is willing to admit any responsibility for starting it. From the parents’ point of view, the only cause of their fight is their adolescents’complete unreasonableness. And of course, the teens see it in exactly the same way, except oppositely. Both feel trapped.
In this article. I’ll describe three no-win situations that commonly arise between teens and parents and then suggest some ways out of the trap. The first no - win situation is quarrels over unimportant things. Examples include the color of the teen’s hair, the cleanliness of the bedroom, the preferred style of clothing, the child’s failure to eat a good breakfast before school, or his tendency to sleep until noon on the weekends. Second, blaming. The goal of a blaming battle is to make the other admit that his bad attitude is the reason why everything goes wrong. Third, needing to be right, it doesn’t matter what the topic is politics, the laws of physics, or the proper way to break an egg—the point of these arguments is to prove that you are right and the other person is wrong, for both wish to be considered an authority someone who actually knows something and therefore to command respect. Unfortunately, as long as parents and teens continue to assume that they know more than the other, they’ll continue to fight these battles forever and never make any real progress.What does the underlined part in Paragraph 2 mean

A.The teens blame their parents for starting the conflict.
B.The teens agree with their parents on the cause of the conflict.
C.The teens cause their parents of misleading them.
D.The teens tend to have a full understanding of their parents.

单项选择题

B
Edward Wilson is America’s, if not the world’s, leading naturalist. In The Future of Life, he takes us on a tour of the world’s natural resources(资源). How are they used What has been lost What remains and is it able to continue with the present speed of use Wilson also points out the need to understand fully the biodiversity(生物多样性) of our earth.
Wilson begins with an open letter to the pioneer in environment (环境)protection, Henry David Thoreau. He compares today’s Walden Pond with that of Thoreau’s day. Wilson will use such comparisons for the rest of the book. The problem is clear: man has done great damage to his home over the years. Van the earth, with human help, be made to return to biodiversity levels that will be able to support us in the future
Biodiversity, Wilson argues, is the key to settling many problems the earth faces today. Even our agricultural crops can gain advantages from it. A mere hundred species(物种) are the basis of our food supply, of which but twenty carry the load. Wilson suggests changing this situation by looking into ten thousand species that could be made use of, which will be a way to reduce the clearing of the natural homes of plants and animals to enlarge farming areas.
At the end of the book, Wilson discusses the importance of human values in considering the environment. If you are to continue to live on the earth, you may well read and act on the ideas in this book.How many species are most important to our present food supply

A.Twenty.
B.Eighty.
C.One hundred.
D.Ten thousand.

单项选择题

C
Below is a housing guide for students going to London. University accommodation (住所) offices
Many university accommodation offices have their own list of registered landlords (房东). Others also provide information on accommodation agencies and other housing organization. The advantage of using your university accommodation is that you can get support if you have a problem. The disadvantage is that they are unlikely to have enough registered landlords to houses all their students.
Property papers: Loot and Renting
Loot is an important source (来源) of information about private housing for co-renters. The offers are from private landlords, agencies and individuals looking for other co-renters. They also have a website: www. loot. com. The advantage of using Loot is that there are some excellent bargains. The disadvantage is that there is no quality control over the offers.
Renting is another useful paper. The offers in this paper are mainly from accommodation agencies. Their website is at www. renting, co. uk.
Accommodation agencies
The majority of rented accommodation in London is probably advertised through accommodation agencies. The advantage of using accommodation agencies is that you will have access to a large number of accommodations. A good agent will listen to your requirements and can save your time in looking for the right accommodation. The disadvantage is that they will make a range of charges to potential renters.
Noticeboards
Around the universities you will find a number of noticeboards where offers of accommodation will be posted. These will either be from landlords or from students. Some universities will also have online noticeboards where students can advertise to other students. Advertisements from students can be an excellent way to find accommodation. However, advertisements from landlords can be problematic.
Word of mouth
Some of the best housing in London is never advertised but is passed on from one group of students to another by word of mouth. It might be that you can find out about good offers from final year students. However, don’t suppose that just because you have found out about housing from a friend it is necessarily going to be better than that found through any other source.
Family
Faced with the very high rents charged in London, some students and their parents will consider buying as an alternative. In some cases this might be a good choice.A good agent can help you ______.

A.know more people
B.find cheap accommodation
C.get the right accommodation quickly
D.get free information about most accommodations

单项选择题

D
Stop Spam!
When I first got an e-mail account ten years ago, I received communications only from family, friends, and colleagues. Now it seems that every time I check my e-mail, I have an endless series of advertisements and other correspondence that do not interest me at all. If we want e-mails to continue to be useful, we need specific laws that make spamming(发送垃圾邮件) a crime.
If law makers do not do something soon to prohibit spam, the problem will certainly get much worse. Computer programs allow spammers to send hundreds of millions of e-mails almost instantly. As more and more advertisers turn to spare to sell their products, individual(个人的) e-mail boxes are often flooded with spam e-mails. Would people continue to use e-mail if they had to deal with an annoying amount of spare each time
This problem is troubling for individuals and companies as well. Many spare e-mails contain computer viruses that can shut down the entire network of a company. Companies rely on e-mails for their employees to communicate with each other. Spam frequently causes failures in their local communications networks, and their employees are thus unable to communicate effectively. Such a situation results in a loss of productivity and requires companies to repeatedly repair their networks. These computer problems raise production costs of companies, which are, in the end, passes on to the consumer.
For these reasons, I believe that lawmakers need to legislate (立法) against spam. Spammers should be fined, and perhaps sent to prison if they continue to disturb people. E-mail is a tool which helps people all over the world to communicate conveniently, but spam is destroying this convenience.According to the text, what is the major cause of the flooding spam

A.Companies rely on e-mails for communications.
B.More people in the world communicate by e-mails.
C.Many computer viruses contain spam e-mails.
D.More advertisers begin to promote sales through spam.

单项选择题

E
Have you winterized your horse yet Even though global warming may have made our climate more mild, many animals are still hibernating(冬眠). It’s too bad that humans can’t hibernate. In fact, as a species, we almost did.
Apparently, at times in the past, peasants in France liked a semi-state of human hibernation. So writes Graham Robb, a British scholar who has studied the sleeping habits of the French peasants. As soon as the weather turned cold people all over France shut themselves away and practiced the forgotten art of doing nothing at all for months on end.
In line with this, Jeff Warren, a producer at CBC Radio’s The Current, tells us that the way we sleep has changed fundamentally since the invention of artificial (人造的) lighting and the electric bulb.
When historians began studying texts of the Middle Ages, they noticed something referred to as "first sleep", which was not clarified, though. Now scientists are telling us our ancestors most likely slept in separate periods. The business of eight hours’ uninterrupted sleep is a modem invention.
In the past, without the artificial light of the city to bathe in, humans went to sleep when it became dark and then woke themselves around midnight. The late night period was known as "The Watch". It was when people actually kept watch against wild animals, although many of them simply moved around or visited family and neighbours.
According to some sleep researchers, a short period of insomnia (失眠) at midnight is not a disorder. It is normal. Humans can experience another state of consciousness around their sleeping, which occurs in the brief period before we fall asleep or wake ourselves in the morning. This period can be an extraordinarily creative time for some people. The impressive inventor, Thomas Edison, used this state to hit upon many of his new ideas.
Playing with your sleep rhythms can be adventurous, as anxiety may set in. Medical science doesn’t help much in this case. It offers us medicines for a full night’s continuous sleep, which sounds natural; however, according to Warren’s theory, it is really the opposite of what we need.What does the author advise people to do

A.Sleep in the way animals do.
B.Consult a doctor if they can’t sleep.
C.Follow their natural sleep rhythm.
D.Keep to the eight -hour sleep pattern.

单项选择题

A
For many parents, raising a teenager is like fighting a long war, but years go by without any clear winner. Like a border conflict between neighboring countries, the parent-teen war is about boundaries: Where is the line between what I control and what you do
Both sides want peace, but neither feels it has any power to stop the conflict. In part, this is because neither is willing to admit any responsibility for starting it. From the parents’ point of view, the only cause of their fight is their adolescents’complete unreasonableness. And of course, the teens see it in exactly the same way, except oppositely. Both feel trapped.
In this article. I’ll describe three no-win situations that commonly arise between teens and parents and then suggest some ways out of the trap. The first no - win situation is quarrels over unimportant things. Examples include the color of the teen’s hair, the cleanliness of the bedroom, the preferred style of clothing, the child’s failure to eat a good breakfast before school, or his tendency to sleep until noon on the weekends. Second, blaming. The goal of a blaming battle is to make the other admit that his bad attitude is the reason why everything goes wrong. Third, needing to be right, it doesn’t matter what the topic is politics, the laws of physics, or the proper way to break an egg—the point of these arguments is to prove that you are right and the other person is wrong, for both wish to be considered an authority someone who actually knows something and therefore to command respect. Unfortunately, as long as parents and teens continue to assume that they know more than the other, they’ll continue to fight these battles forever and never make any real progress.Parents and teens want to be right because they want to ______.

A.give orders to the other
B.know more than the other
C.gain respect from the other
D.get the other to behave properly

单项选择题

B
Edward Wilson is America’s, if not the world’s, leading naturalist. In The Future of Life, he takes us on a tour of the world’s natural resources(资源). How are they used What has been lost What remains and is it able to continue with the present speed of use Wilson also points out the need to understand fully the biodiversity(生物多样性) of our earth.
Wilson begins with an open letter to the pioneer in environment (环境)protection, Henry David Thoreau. He compares today’s Walden Pond with that of Thoreau’s day. Wilson will use such comparisons for the rest of the book. The problem is clear: man has done great damage to his home over the years. Van the earth, with human help, be made to return to biodiversity levels that will be able to support us in the future
Biodiversity, Wilson argues, is the key to settling many problems the earth faces today. Even our agricultural crops can gain advantages from it. A mere hundred species(物种) are the basis of our food supply, of which but twenty carry the load. Wilson suggests changing this situation by looking into ten thousand species that could be made use of, which will be a way to reduce the clearing of the natural homes of plants and animals to enlarge farming areas.
At the end of the book, Wilson discusses the importance of human values in considering the environment. If you are to continue to live on the earth, you may well read and act on the ideas in this book.Wilson suggests that one way to keep biodiversity is to ______.

A.learn how to farm scientifically
B.build homes for some dying species
C.make it clear what to eat
D.use more species for food

单项选择题

C
Below is a housing guide for students going to London. University accommodation (住所) offices
Many university accommodation offices have their own list of registered landlords (房东). Others also provide information on accommodation agencies and other housing organization. The advantage of using your university accommodation is that you can get support if you have a problem. The disadvantage is that they are unlikely to have enough registered landlords to houses all their students.
Property papers: Loot and Renting
Loot is an important source (来源) of information about private housing for co-renters. The offers are from private landlords, agencies and individuals looking for other co-renters. They also have a website: www. loot. com. The advantage of using Loot is that there are some excellent bargains. The disadvantage is that there is no quality control over the offers.
Renting is another useful paper. The offers in this paper are mainly from accommodation agencies. Their website is at www. renting, co. uk.
Accommodation agencies
The majority of rented accommodation in London is probably advertised through accommodation agencies. The advantage of using accommodation agencies is that you will have access to a large number of accommodations. A good agent will listen to your requirements and can save your time in looking for the right accommodation. The disadvantage is that they will make a range of charges to potential renters.
Noticeboards
Around the universities you will find a number of noticeboards where offers of accommodation will be posted. These will either be from landlords or from students. Some universities will also have online noticeboards where students can advertise to other students. Advertisements from students can be an excellent way to find accommodation. However, advertisements from landlords can be problematic.
Word of mouth
Some of the best housing in London is never advertised but is passed on from one group of students to another by word of mouth. It might be that you can find out about good offers from final year students. However, don’t suppose that just because you have found out about housing from a friend it is necessarily going to be better than that found through any other source.
Family
Faced with the very high rents charged in London, some students and their parents will consider buying as an alternative. In some cases this might be a good choice.The information passed on by word of mouth is important because ______.

A.it is better than that found through any other source
B.it helps you find some of the best housing never advertised
C.the final year students always offer better information
D.the landlords have little valuable information

单项选择题

D
Stop Spam!
When I first got an e-mail account ten years ago, I received communications only from family, friends, and colleagues. Now it seems that every time I check my e-mail, I have an endless series of advertisements and other correspondence that do not interest me at all. If we want e-mails to continue to be useful, we need specific laws that make spamming(发送垃圾邮件) a crime.
If law makers do not do something soon to prohibit spam, the problem will certainly get much worse. Computer programs allow spammers to send hundreds of millions of e-mails almost instantly. As more and more advertisers turn to spare to sell their products, individual(个人的) e-mail boxes are often flooded with spam e-mails. Would people continue to use e-mail if they had to deal with an annoying amount of spare each time
This problem is troubling for individuals and companies as well. Many spare e-mails contain computer viruses that can shut down the entire network of a company. Companies rely on e-mails for their employees to communicate with each other. Spam frequently causes failures in their local communications networks, and their employees are thus unable to communicate effectively. Such a situation results in a loss of productivity and requires companies to repeatedly repair their networks. These computer problems raise production costs of companies, which are, in the end, passes on to the consumer.
For these reasons, I believe that lawmakers need to legislate (立法) against spam. Spammers should be fined, and perhaps sent to prison if they continue to disturb people. E-mail is a tool which helps people all over the world to communicate conveniently, but spam is destroying this convenience.According to Paragraph 3, who is the final victim of spam

A.The business
B.The advertiser
C.The employee
D.The consumer

单项选择题

E
Have you winterized your horse yet Even though global warming may have made our climate more mild, many animals are still hibernating(冬眠). It’s too bad that humans can’t hibernate. In fact, as a species, we almost did.
Apparently, at times in the past, peasants in France liked a semi-state of human hibernation. So writes Graham Robb, a British scholar who has studied the sleeping habits of the French peasants. As soon as the weather turned cold people all over France shut themselves away and practiced the forgotten art of doing nothing at all for months on end.
In line with this, Jeff Warren, a producer at CBC Radio’s The Current, tells us that the way we sleep has changed fundamentally since the invention of artificial (人造的) lighting and the electric bulb.
When historians began studying texts of the Middle Ages, they noticed something referred to as "first sleep", which was not clarified, though. Now scientists are telling us our ancestors most likely slept in separate periods. The business of eight hours’ uninterrupted sleep is a modem invention.
In the past, without the artificial light of the city to bathe in, humans went to sleep when it became dark and then woke themselves around midnight. The late night period was known as "The Watch". It was when people actually kept watch against wild animals, although many of them simply moved around or visited family and neighbours.
According to some sleep researchers, a short period of insomnia (失眠) at midnight is not a disorder. It is normal. Humans can experience another state of consciousness around their sleeping, which occurs in the brief period before we fall asleep or wake ourselves in the morning. This period can be an extraordinarily creative time for some people. The impressive inventor, Thomas Edison, used this state to hit upon many of his new ideas.
Playing with your sleep rhythms can be adventurous, as anxiety may set in. Medical science doesn’t help much in this case. It offers us medicines for a full night’s continuous sleep, which sounds natural; however, according to Warren’s theory, it is really the opposite of what we need.What is the author’s purpose in writing the passage

A.To give a prescription for insomnia.
B.To urge people to sleep less.
C.To analyze the sleep pattern of modem people.
D.To throw new light on human sleep.

单项选择题

A
For many parents, raising a teenager is like fighting a long war, but years go by without any clear winner. Like a border conflict between neighboring countries, the parent-teen war is about boundaries: Where is the line between what I control and what you do
Both sides want peace, but neither feels it has any power to stop the conflict. In part, this is because neither is willing to admit any responsibility for starting it. From the parents’ point of view, the only cause of their fight is their adolescents’complete unreasonableness. And of course, the teens see it in exactly the same way, except oppositely. Both feel trapped.
In this article. I’ll describe three no-win situations that commonly arise between teens and parents and then suggest some ways out of the trap. The first no - win situation is quarrels over unimportant things. Examples include the color of the teen’s hair, the cleanliness of the bedroom, the preferred style of clothing, the child’s failure to eat a good breakfast before school, or his tendency to sleep until noon on the weekends. Second, blaming. The goal of a blaming battle is to make the other admit that his bad attitude is the reason why everything goes wrong. Third, needing to be right, it doesn’t matter what the topic is politics, the laws of physics, or the proper way to break an egg—the point of these arguments is to prove that you are right and the other person is wrong, for both wish to be considered an authority someone who actually knows something and therefore to command respect. Unfortunately, as long as parents and teens continue to assume that they know more than the other, they’ll continue to fight these battles forever and never make any real progress.What will the author most probably discuss in the paragraph that follows

A.Causes for the parent-teen conflicts.
B.Examples of the parent-teen war.
C.Solutions for the parent-teen problems.
D.Future of the parent-teen relationship.

单项选择题

B
Edward Wilson is America’s, if not the world’s, leading naturalist. In The Future of Life, he takes us on a tour of the world’s natural resources(资源). How are they used What has been lost What remains and is it able to continue with the present speed of use Wilson also points out the need to understand fully the biodiversity(生物多样性) of our earth.
Wilson begins with an open letter to the pioneer in environment (环境)protection, Henry David Thoreau. He compares today’s Walden Pond with that of Thoreau’s day. Wilson will use such comparisons for the rest of the book. The problem is clear: man has done great damage to his home over the years. Van the earth, with human help, be made to return to biodiversity levels that will be able to support us in the future
Biodiversity, Wilson argues, is the key to settling many problems the earth faces today. Even our agricultural crops can gain advantages from it. A mere hundred species(物种) are the basis of our food supply, of which but twenty carry the load. Wilson suggests changing this situation by looking into ten thousand species that could be made use of, which will be a way to reduce the clearing of the natural homes of plants and animals to enlarge farming areas.
At the end of the book, Wilson discusses the importance of human values in considering the environment. If you are to continue to live on the earth, you may well read and act on the ideas in this book.We can infer that the text is ______.

A.a description of natural resources
B.a research report
C.a book review
D.an introduction to a scientist

单项选择题

D
Stop Spam!
When I first got an e-mail account ten years ago, I received communications only from family, friends, and colleagues. Now it seems that every time I check my e-mail, I have an endless series of advertisements and other correspondence that do not interest me at all. If we want e-mails to continue to be useful, we need specific laws that make spamming(发送垃圾邮件) a crime.
If law makers do not do something soon to prohibit spam, the problem will certainly get much worse. Computer programs allow spammers to send hundreds of millions of e-mails almost instantly. As more and more advertisers turn to spare to sell their products, individual(个人的) e-mail boxes are often flooded with spam e-mails. Would people continue to use e-mail if they had to deal with an annoying amount of spare each time
This problem is troubling for individuals and companies as well. Many spare e-mails contain computer viruses that can shut down the entire network of a company. Companies rely on e-mails for their employees to communicate with each other. Spam frequently causes failures in their local communications networks, and their employees are thus unable to communicate effectively. Such a situation results in a loss of productivity and requires companies to repeatedly repair their networks. These computer problems raise production costs of companies, which are, in the end, passes on to the consumer.
For these reasons, I believe that lawmakers need to legislate (立法) against spam. Spammers should be fined, and perhaps sent to prison if they continue to disturb people. E-mail is a tool which helps people all over the world to communicate conveniently, but spam is destroying this convenience.What is the purpose of the text

A.To inform
B.To educate
C.To persuade
D.To instruct

单项选择题

C
Below is a housing guide for students going to London. University accommodation (住所) offices
Many university accommodation offices have their own list of registered landlords (房东). Others also provide information on accommodation agencies and other housing organization. The advantage of using your university accommodation is that you can get support if you have a problem. The disadvantage is that they are unlikely to have enough registered landlords to houses all their students.
Property papers: Loot and Renting
Loot is an important source (来源) of information about private housing for co-renters. The offers are from private landlords, agencies and individuals looking for other co-renters. They also have a website: www. loot. com. The advantage of using Loot is that there are some excellent bargains. The disadvantage is that there is no quality control over the offers.
Renting is another useful paper. The offers in this paper are mainly from accommodation agencies. Their website is at www. renting, co. uk.
Accommodation agencies
The majority of rented accommodation in London is probably advertised through accommodation agencies. The advantage of using accommodation agencies is that you will have access to a large number of accommodations. A good agent will listen to your requirements and can save your time in looking for the right accommodation. The disadvantage is that they will make a range of charges to potential renters.
Noticeboards
Around the universities you will find a number of noticeboards where offers of accommodation will be posted. These will either be from landlords or from students. Some universities will also have online noticeboards where students can advertise to other students. Advertisements from students can be an excellent way to find accommodation. However, advertisements from landlords can be problematic.
Word of mouth
Some of the best housing in London is never advertised but is passed on from one group of students to another by word of mouth. It might be that you can find out about good offers from final year students. However, don’t suppose that just because you have found out about housing from a friend it is necessarily going to be better than that found through any other source.
Family
Faced with the very high rents charged in London, some students and their parents will consider buying as an alternative. In some cases this might be a good choice.For students going to London for the first time, which of the following provides the most reliable information

A.University accommodation offices
B.Loot and Renting
C.Noticeboards
D.Family

单项选择题

E
Have you winterized your horse yet Even though global warming may have made our climate more mild, many animals are still hibernating(冬眠). It’s too bad that humans can’t hibernate. In fact, as a species, we almost did.
Apparently, at times in the past, peasants in France liked a semi-state of human hibernation. So writes Graham Robb, a British scholar who has studied the sleeping habits of the French peasants. As soon as the weather turned cold people all over France shut themselves away and practiced the forgotten art of doing nothing at all for months on end.
In line with this, Jeff Warren, a producer at CBC Radio’s The Current, tells us that the way we sleep has changed fundamentally since the invention of artificial (人造的) lighting and the electric bulb.
When historians began studying texts of the Middle Ages, they noticed something referred to as "first sleep", which was not clarified, though. Now scientists are telling us our ancestors most likely slept in separate periods. The business of eight hours’ uninterrupted sleep is a modem invention.
In the past, without the artificial light of the city to bathe in, humans went to sleep when it became dark and then woke themselves around midnight. The late night period was known as "The Watch". It was when people actually kept watch against wild animals, although many of them simply moved around or visited family and neighbours.
According to some sleep researchers, a short period of insomnia (失眠) at midnight is not a disorder. It is normal. Humans can experience another state of consciousness around their sleeping, which occurs in the brief period before we fall asleep or wake ourselves in the morning. This period can be an extraordinarily creative time for some people. The impressive inventor, Thomas Edison, used this state to hit upon many of his new ideas.
Playing with your sleep rhythms can be adventurous, as anxiety may set in. Medical science doesn’t help much in this case. It offers us medicines for a full night’s continuous sleep, which sounds natural; however, according to Warren’s theory, it is really the opposite of what we need.The example of the French peasants shows the fact that ______.

A.people might become lazy as a result of too much sleep
B.there were signs of hibernation in human sleeping habits
C.people tended to sleep more peacefully in cold weather
D.winter was a season for people to sleep for months on end

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