公共英语四级听力-15及答案解析.doc

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1、公共英语四级听力-15 及答案解析(总分：100.00，做题时间：90 分钟)一、Listening Comprehens(总题数：0，分数：0.00)二、Part A(总题数：1，分数：25.00)Information About the ReportFinancial aid programs in the United States, especiallyat the undergraduate level, do often require_ citizenship.(1) If a student wants to get the scholarship, he has tobe

2、_ blind. (2) The average amount of money for the scholarship is_ dollars. (3) The highest amount of money for the scholarship is_ dollars. (4) the number of blind adults in the US is _ (5) （分数：25.00）(1).Information About the ReportFinancial aid programs in the United States, especiallyat the undergr

3、aduate level, do often require_ citizenship.(1) If a student wants to get the scholarship, he has tobe _ blind. (2) The average amount of money for the scholarship is_ dollars. (3) The highest amount of money for the scholarship is_ dollars. (4) the number of blind adults in the US is _ (5) （分数：5.00

4、）填空项 1:_(2).Information About the ReportFinancial aid programs in the United States, especiallyat the undergraduate level, do often require_ citizenship.(1) If a student wants to get the scholarship, he has tobe _ blind. (2) The average amount of money for the scholarship is_ dollars. (3) The highes

5、t amount of money for the scholarship is_ dollars. (4) the number of blind adults in the US is _ (5) （分数：5.00）填空项 1:_(3).Information About the ReportFinancial aid programs in the United States, especiallyat the undergraduate level, do often require_ citizenship.(1) If a student wants to get the scho

6、larship, he has tobe _ blind. (2) The average amount of money for the scholarship is_ dollars. (3) The highest amount of money for the scholarship is_ dollars. (4) the number of blind adults in the US is _ (5) （分数：5.00）填空项 1:_(4).Information About the ReportFinancial aid programs in the United State

7、s, especially (1) at the undergraduate level, do often require_ citizenship.If a student wants to get the scholarship, he has tobe _ blind. (2) The average amount of money for the scholarship is_ dollars. (3) The highest amount of money for the scholarship is_ dollars. (4) the number of blind adults

8、 in the US is _ (5) （分数：5.00）填空项 1:_(5).Information About the ReportFinancial aid programs in the United States, especiallyat the undergraduate level, do often require_ citizenship.(1) If a student wants to get the scholarship, he has tobe _ blind. (2) The average amount of money for the scholarship

9、 is_ dollars. (3) The highest amount of money for the scholarship is_ dollars. (4) the number of blind adults in the US is _ (5) （分数：5.00）填空项 1:_三、Part B(总题数：1，分数：25.00)填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_四、Part C(总题数：3，分数：50.00)(1).How much is the damage done to the United States each year by red an

10、ts?A. 3 billion dollars. B. 4 billion dollars.C. 5 billion dollars. D. 6 billion dollars.（分数：5.00）A.B.C.D.(2).Which of the following is NOT the damage done by red ants?A. They can destroy the houses of farmers.B. They can injure animals and farmers.C. They destroy crops.D. They get into animal feed.

11、（分数：5.00）A.B.C.D.(3).What could be an effective way to control the red ants?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 biological animals to kill them.（分数：5.00）A.B.C.D.(1).How many pe

12、ople become infected with malaria each year?A. Over 3 million. B. Over 7 million.C. Over 30 million. D. Over 70 million.（分数：5.00）A.B.C.D.(2).What is not one of the bad effects of malaria?A. The malaria parasites will grow and divide in the kidney.B. The red blood cells will then be invaded by the pa

13、rasites which reproduce thousands of times later.C. The parasites cause a persons body temperature to rise.D. People with malaria may suffer kidney failure or loss of red blood cells.（分数：5.00）A.B.C.D.(3).What is the main idea of the passage?A. Malaria is uncontrollable.B. Scientists are trying to de

14、velop insects resistant to malaria.C. How to kill mosquitoes.D. How useless science is in curing malaria.（分数：5.00）A.B.C.D.(1).The study was carried out by scientists from _.A. America and Australia B. America and CanadaC. America and Austria D. America and China（分数：5.00）A.B.C.D.(2).The scientists sa

15、y one effect of shark fishing has been an estimated _ decrease in some shark populations.A. 9% B. 19% C. 90% D. 99%（分数：5.00）A.B.C.D.(3).Why is the demand for shark fins rising in Asia?A. Because there are fewer sharks in Asia.B. Because shark fins can be used for medical purposes and for food.C. Bec

16、ause shark fins are poisonous.D. Because shark fins are expensive.（分数：5.00）A.B.C.D.(4).For one of the studies, scientists from Canada noted a sharp decrease in _ kinds of great sharks since the nineteen eighties.A. 8 B. 9 C. 10 D. 11（分数：5.00）A.B.C.D.公共英语四级听力-15 答案解析(总分：100.00，做题时间：90 分钟)一、Listening

17、Comprehens(总题数：0，分数：0.00)二、Part A(总题数：1，分数：25.00)Information About the ReportFinancial aid programs in the United States, especiallyat the undergraduate level, do often require_ citizenship.(1) If a student wants to get the scholarship, he has tobe _ blind. (2) The average amount of money for the sc

18、holarship is_ dollars. (3) The highest amount of money for the scholarship is_ dollars. (4) the number of blind adults in the US is _ (5) （分数：25.00）(1).Information About the ReportFinancial aid programs in the United States, especiallyat the undergraduate level, do often require_ citizenship.(1) If

19、a student wants to get the scholarship, he has tobe _ blind. (2) The average amount of money for the scholarship is_ dollars. (3) The highest amount of money for the scholarship is_ dollars. (4) the number of blind adults in the US is _ (5) （分数：5.00）填空项 1:_ （正确答案：American）解析：听力原文Financial aid progra

20、ms in the United States, especially at the undergraduate level, do often require American citizenship. At the same time, scholarships often pay only part of the cost of an education. The National Federation of the Blind advises students to contact any school they wish to attend to ask about financia

21、l aid.The federation is the countrys 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 until a college in the United States has already accepted them.The application deadline

22、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 federation says there are no special colleges or universities for the blind. But schools do of

23、fer special services and technology to help students with disabilities.(2).Information About the ReportFinancial aid programs in the United States, especiallyat the undergraduate level, do often require_ citizenship.(1) If a student wants to get the scholarship, he has tobe _ blind. (2) The average

24、amount of money for the scholarship is_ dollars. (3) The highest amount of money for the scholarship is_ dollars. (4) the number of blind adults in the US is _ (5) （分数：5.00）填空项 1:_ （正确答案：legally）解析：(3).Information About the ReportFinancial aid programs in the United States, especiallyat the undergra

25、duate level, do often require_ citizenship.(1) If a student wants to get the scholarship, he has tobe _ blind. (2) The average amount of money for the scholarship is_ dollars. (3) The highest amount of money for the scholarship is_ dollars. (4) the number of blind adults in the US is _ (5) （分数：5.00）

26、填空项 1:_ （正确答案：3,000）解析：(4).Information About the ReportFinancial aid programs in the United States, especiallyat (1) the undergraduate level, do often require_ citizenship.If a student wants to get the sc(2) holarship, he has tobe _ blind.The average amount of money for the scholarship is_ do(3) lla

27、rs.The highest amount of money for the scholarship is_ dollars.(4) the number of blind ad(5) ults in the US is _ （分数：5.00）填空项 1:_ （正确答案：12,000）解析：(5).Information About the ReportFinancial aid programs in the United States, especial(1) lyat the undergraduate level, do often require_ citizenship.If a

28、student wants to get th(2) e scholarship, he has tobe _ blind.The average amount of money for the scholarship is_(3) _ dollars.The highest amount of money for the scholarship is_ dollars.(4) the number of blin(5) d adults in the US is _ （分数：5.00）填空项 1:_ （正确答案：1,000,000）解析：三、Part B(总题数：1，分数：25.00)填空项

29、 1:_ （正确答案：lose weight）解析：听力原文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 meal can actually help to lose weight. This is because you tend to feel full sooner, you eat less of your main course. The soup re

30、gime 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 before lunch they reduced their total calorie intake by 20 percent, compared with those who did not begin the meal with soup.But those

31、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 from identical ingredients-chicken stock, broccoli, potato, cauliflower and carrots.They were blended to create four different texture

32、s and degrees of thickness from separate stock and vegetables through to pureed soup.Scientists thought that thick soups with chunks of vegetables which required chewing might be more filling, but to their surprise they found all forms had the same effect.The findings were presented to the Experimen

33、tal Biology conference in Washington D.C., and the research was part funded by the National Institute of Health.填空项 1:_ （正确答案：main course）解析：填空项 1:_ （正确答案：20%）解析：填空项 1:_ （正确答案：cream）解析：填空项 1:_ （正确答案：the same）解析：四、Part C(总题数：3，分数：50.00)(1).How much is the damage done to the United States each year by

34、 red ants?A. 3 billion dollars. B. 4 billion dollars.C. 5 billion dollars. D. 6 billion dollars.（分数：5.00）A.B.C.D. 解析：听力原文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 kinds of fire a

35、nts. 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 spread northward an

36、d 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 when they sting, the

37、y 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 no native predator

38、s, 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 virus about five years a

39、go. 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 about three months.Now,

40、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?A. They can destroy the houses of farmers.B. They can injure animals and farmers.C. They destr

41、oy crops.D. They get into animal feed.（分数：5.00）A. B.C.D.解析：(3).What could be an effective way to control the red ants?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 biological animals to

42、kill them.（分数：5.00）A. B.C.D.解析：(1).How many people become infected with malaria each year?A. Over 3 million. B. Over 7 million.C. Over 30 million. D. Over 70 million.（分数：5.00）A. B.C.D.解析：听力原文Researchers in the United States are exploring a possible way to control malaria. They are developing insects

43、 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 Middle East and South America.Malaria parasites enter a persons blood through the bite of a very small inse

44、ct-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 cause a persons body temperature to rise. They also may destroy major organs. People with malaria may suff

45、er 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. But experts still say the best way to prevent the disease is not to be bitten by a mosquito.That could cha

46、nge 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 replace mosquitoes in the wild if malaria control is to succeed. The researchers reported their findings in t

47、he Proceedings of the National Academy of Sciences.(2).What is not one of the bad effects of malaria?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 persons body temperature to rise.D. People with malaria may suffer kidney failure or loss of red blood cells.（分数：5.00）A. B.C.D.解析：(3).What is the main idea of the passage?A. Malaria is uncontrollable.B. Scientists are trying to develop inse