公共英语四级听力-1及答案解析.doc

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1、公共英语四级听力-1 及答案解析(总分：20.00，做题时间：90 分钟)一、BListening Compr(总题数：1，分数：5.00)BPart A/BI For Questions 1-5, you will hear a report. While you listen, fill out the table with the information you have heard. Some of the information has been given to you in the table. Write only 1 word in each numbered box. Yo

2、u will hear the recording twice. You now have 25 seconds to read the table below./IInformation About the Report Financial aid programs in the United States, espe-cially at the undergraduate level, do often require_ citizenship.1If a Student wants to get the scholarship, he has tobe _ blind. 2The ave

3、rage amount of money for the scholarship is_ dollars. 3The highest amount of money for the scholarship is_ dollars. 5the number of blind adults in the US is _ 6（分数：5.00）(1).（分数：1.00）填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_二、BPart B/B(总题数：1，分数：5.00)（分数：5.00）(1).Health experts have discovered that adding l

4、ow-calorie vegetable broth to the start of a meal can actually help to _ .（分数：1.00）填空项 1:_(2).This is because you tend to feel full sooner, you eat less of your _ .（分数：1.00）填空项 1:_(3).Participants in the study who ate a course of soup before lunch reduced their total calorie intake by _, compared wi

5、th those who didnt.（分数：1.00）填空项 1:_(4).Researchers stressed the soup must be low-calorie and based on stock, not _ .（分数：1.00）填空项 1:_(5).Thick soups and thin soups have _ effect.（分数：1.00）填空项 1:_三、BPart C/B(总题数：3，分数：10.00)IQuestions 11-13 are based on the following talk. You now have 15 seconds to rea

6、d Questions 11-13./I（分数：3.00）(1).How much is the damage done to the United States each year by red ants?（分数：1.00）A.3 billion dollars.B.4 billion dollars.C.5 billion dollars.D.6 billion dollars.(2).Which of the following is NOT the damage done by red ants?（分数：1.00）A.They can destroy the houses of far

7、mers.B.They can injure animals and farmers.C.They destroy crops.D.They get into animal feed.(3).What could be an effective way to control the red ants?（分数：1.00）A.To spread a kind of virus within the ants themselves.B.To use fire to destroy them.C.To create a kind of powerful poison to destroy them.D

8、.To raise other biological animals to kill them.IQuestions 14-16 are based on the following passage. You now have 15 seconds to read Questions 14-16./I（分数：3.00）(1).How many people become infected with malaria each year?（分数：1.00）A.Over 3 million.B.Over 7 million.C.Over 30 million.D.Over 70 million.(2

9、).What is not one of the bad effects of malaria?（分数：1.00）A.The malaria parasites will grow and divide in the kidney.B.The red blood cells will then be invaded by the parasites which reproduce thousands of times later.C.The parasites cause a person s body temperature to rise.D.People with malaria may

10、 suffer kidney failure or loss of red blood cells.(3).What is the main idea of the passage?（分数：1.00）A.Malaria is uncontrollable.B.Scientists are trying to develop insects resistant to malaria.C.How to kill mosquitoes.D.How useless science is in curing malaria.IQuestions 17-20 are based on the follow

11、ing passage. You now have 15 seconds to read Questions 17-20./I（分数：4.00）(1).The study was carried out by scientists from _ .（分数：1.00）A.America and AustraliaB.America and CanadaC.America and AustriaD.America and China(2).The scientists say one effect of shark fishing has been an estimated _ decrease

12、in some shark populations.（分数：1.00）A.9%B.19%C.90%D.99%(3).Why is the demand for shark fins rising in Asia?（分数：1.00）A.Because there are fewer sharks in Asia.B.Because shark fins can be used for medical purposes and for food.C.Because shark fins are poisonous.D.Because shark fins are expensive.(4).For

13、 one of the studies, scientists from Canada noted a sharp decrease in _ kinds of great sharks since the nineteen eighties.（分数：1.00）A.8B.9C.10D.11公共英语四级听力-1 答案解析(总分：20.00，做题时间：90 分钟)一、BListening Compr(总题数：1，分数：5.00)BPart A/BI For Questions 1-5, you will hear a report. While you listen, fill out the t

14、able with the information you have heard. Some of the information has been given to you in the table. Write only 1 word in each numbered box. You will hear the recording twice. You now have 25 seconds to read the table below./IInformation About the Report Financial aid programs in the United States,

15、 espe-cially at the undergraduate level, do often require_ citizenship.1If a Student wants to get the scholarship, he has tobe _ blind. 2The average amount of money for the scholarship is_ dollars. 3The highest amount of money for the scholarship is_ dollars. 5the number of blind adults in the US is

16、 _ 6（分数：5.00）(1).（分数：1.00）填空项 1:_ （正确答案：American）解析：听力原文1-5 Financial aid programs in the United States, especially at the undergraduate level, do often re-quire American citizenship. At the same time, scholarships often pay only part of the cost of an education. The National Federation of the Blind

17、 advises students to contact any school they wish to at-tend to ask about financial aid. The federation is the country s largest group for the blind. Each year it awards scholarships that do not have any citizenship requirements. Students must be legally blind. And foreign students cannot apply unti

18、l a college in the United States has already accepted them. The application deadline is March thirty-first for thirty scholarships offered for this fall. Most are three thousand dollars. The highest is twelve thousand dollars. The United States has an estimated one million blind adults. The federati

19、on says there are no special colleges or universities for the blind. But schools do offer special services and technology to help students with disabilities.填空项 1:_ （正确答案：legally）解析：填空项 1:_ （正确答案：3,000）解析：填空项 1:_ （正确答案：12,000）解析：填空项 1:_ （正确答案：1,000,000）解析：二、BPart B/B(总题数：1，分数：5.00)（分数：5.00）(1).Healt

20、h experts have discovered that adding low-calorie vegetable broth to the start of a meal can actually help to _ .（分数：1.00）填空项 1:_ （正确答案：lose weight）解析：听力原文6-10 A bowl of soup a day could keep the pounds at bay. Health experts have discovered that adding low-calorie vegetable broth to the start of a

21、meal can actually help to lose weight. This is be-cause you tend to feel full sooner, you eat less of your main course. The soup regime was tested by researchers at Pennsylvania State University, led by Dr. Barbara Rolls. They found that when participants in the study ate a first course of soup befo

22、re lunch they reduced their total calorie intake by 20 percent, compared with those who did not begin the meal with soup. But those who favour creamy soups should beware. Researchers stressed the soup must be low-calorie and based on stock, not cream. All of the soups tested in the study were made f

23、rom identical ingredients-chicken stock, broccoli, potato, cauliflower and carrots. They were blended to create four different textures and degrees of thickness from separate stock and vegetables through to pur6ed soup. Scientists thought that thick soups with chunks of vegetables which required che

24、wing might be more filling, but to their surprise they found all forms had the same effect. The findings were presented to the Experimental Biology conference in Washington D. C., and the research was part funded by the National Institute of Health.(2).This is because you tend to feel full sooner, y

25、ou eat less of your _ .（分数：1.00）填空项 1:_ （正确答案：main course）解析：(3).Participants in the study who ate a course of soup before lunch reduced their total calorie intake by _, compared with those who didnt.（分数：1.00）填空项 1:_ （正确答案：20%）解析：(4).Researchers stressed the soup must be low-calorie and based on sto

26、ck, not _ .（分数：1.00）填空项 1:_ （正确答案：cream）解析：(5).Thick soups and thin soups have _ effect.（分数：1.00）填空项 1:_ （正确答案：the same）解析：三、BPart C/B(总题数：3，分数：10.00)IQuestions 11-13 are based on the following talk. You now have 15 seconds to read Questions 11-13./I（分数：3.00）(1).How much is the damage done to the Un

27、ited States each year by red ants?（分数：1.00）A.3 billion dollars.B.4 billion dollars.C.5 billion dollars.D.6 billion dollars. 解析：听力原文11-13 Farmers in parts of the United States have struggled for years with an invasion of red imported fire ants from Brazil. These insects do major damage, unlike native

28、 kinds of fire ants. Each year they cause an estimated six billion dollars worth of damage in the United States. More than one billion dollars of that is just in Texas. The ants are thought to have arrived in the southern state of Alabama in the nineteen twenties or thirties. Since then they have sp

29、read northward and all the way to the West Coast. They ruin crops, damage soil and get into animal feed. They also damage electrical equipment and machinery. Not only that, they injure animals and workers. So farmers have to deal with medical costs and lost labor. Fire ants get their name because wh

30、en they sting, they inject poison into the skin that causes a feeling of intense burning. Some people suffer life-threatening reactions. Colonies of red imported fire ants can be found in cities as well as farming areas. They can go deep underground to survive periods of little or no rain. They have

31、 no native predators, no creatures that like to feed on them. But one solution could come from the ants themselves, in the form of a virus that some of them carry. This virus may someday help control the population. Scientists at the United States Department of Agriculture began to work with the vir

32、us about five years ago. The researchers observed one hundred sixty-eight nests of imported fire ants in Florida. They found the virus in almost one-fourth of them. The researchers found that the virus affected every part of fire-ant development, including the eggs. The affected colonies died in abo

33、ut three months. Now, government researchers want to work with a private company to produce large amounts of the virus. It could then be used as a biological control.(2).Which of the following is NOT the damage done by red ants?（分数：1.00）A.They can destroy the houses of farmers. B.They can injure ani

34、mals and farmers.C.They destroy crops.D.They get into animal feed.解析：(3).What could be an effective way to control the red ants?（分数：1.00）A.To spread a kind of virus within the ants themselves. B.To use fire to destroy them.C.To create a kind of powerful poison to destroy them.D.To raise other biolog

35、ical animals to kill them.解析：IQuestions 14-16 are based on the following passage. You now have 15 seconds to read Questions 14-16./I（分数：3.00）(1).How many people become infected with malaria each year?（分数：1.00）A.Over 3 million. B.Over 7 million.C.Over 30 million.D.Over 70 million.解析：听力原文14-16 Researc

36、hers in the United States are exploring a possible way to control malaria. They are developing insects resistant to the disease. More than three million people become infected with malaria each year. The disease kills at least one million people every year. Malaria is found in Africa, Asia, the Midd

37、le East and South America. Malaria parasites enter a person s blood through the bite of a very small insect-the mosquito. The malaria parasites travel to the liver. The organisms grow and divide there. After a week or two, the parasites invade red blood cells and reproduce thousands of times. They c

38、ause a person s body temperature to rise. They also may destroy major organs. People with malaria may suffer kidney failure or loss of red blood cells. People die from malaria because they are not treated or treatment is delayed. Different drugs can prevent the parasites from developing in the body.

39、 But experts still say the best way to prevent the disease is not to be bitten by a mosquito. That could change in the future. Research scientists at The Johns Hopkins University have created mosquitoes that cannot spread the malaria parasites. Computer studies show that such insects are needed to r

40、eplace mosquitoes in the wild if malaria control is to succeed. The researchers reported their findings in the Proceedings of the National Academy of Sciences.(2).What is not one of the bad effects of malaria?（分数：1.00）A.The malaria parasites will grow and divide in the kidney. B.The red blood cells

41、will then be invaded by the parasites which reproduce thousands of times later.C.The parasites cause a person s body temperature to rise.D.People with malaria may suffer kidney failure or loss of red blood cells.解析：(3).What is the main idea of the passage?（分数：1.00）A.Malaria is uncontrollable.B.Scien

42、tists are trying to develop insects resistant to malaria. C.How to kill mosquitoes.D.How useless science is in curing malaria.解析：IQuestions 17-20 are based on the following passage. You now have 15 seconds to read Questions 17-20./I（分数：4.00）(1).The study was carried out by scientists from _ .（分数：1.0

43、0）A.America and AustraliaB.America and Canada C.America and AustriaD.America and China解析：听力原文17-20 Canadian and American scientists studied the effects of people s fishing for sharks in the Northwest Atlantic over the past thirty-five years. Results of their studies were published in Science magazin

44、e. The scientists say one effect of shark fishing has been an estimated ninety-nine percent de-crease in some shark populations. They say the loss of larger sharks has caused a population explosion among fish like skates and rays. Such fish and smaller sharks have increased in number along the east

45、coast of the United States. Sharks usually eat skates and rays. The scientists say these fish feed on shellfish, which are disappearing from the ocean. They say other sea animals are also being threatened by the area s changing environment. Demand for shark fins has been rising in Asia. Shark fins a

46、re used for medical purposes and also for food. For one of the studies, scientists from Canada examined information from private fishing companies and other research projects. They noted a sharp decrease in eleven kinds of great sharks since the nineteen eighties. One of the scientists was Julia Bau

47、m of Dalhousie University. She says the World Conservation Union earlier this year listed great hammerhead and scalloped hammerhead sharks as being in danger of disappearing. The group also reported the dusky and sandbar sharks as being threatened.(2).The scientists say one effect of shark fishing has been an estimated _ decrease in some shark populations.（分数：1.00）A.9%B.19%C.90%D.99% 解析：(3).Why is the demand for shark fins rising in Asia?（分数：1.00）A.Because there are fewer sharks in Asia.B.Because shark fins can be used for medical purposes and for food. C.Because shark fins are