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2008年12月英语四级听力模拟题(四)
2008-11-16来源:和谐英语
Passage Two
America’s national symbol, the bald eagle, almost went extinct twenty years ago, but it has made a comeback. In fact, the U.S. Fish and Wild Life Service is considering the possibility of taking it off the Endangered Species List. Once, more than fifty thousand pairs of bald eagles nested across the country, but by 1960 that number had fallen to below four hundred. The chief killer was the widely used DDT. Fish soaked up DDT, died, and were washed up on the shores, where bald eagles feasted on them. DDT prevented eagle eggshells from thickening. The shells became so thin that they shattered before the babies hatched. Fortunately, in 1972, a law was passed to ban DDT, which saved the bald eagle from total wipeout. And since then, wild-life biologists have reintroduced bald eagles from Canada to America. The result was that last year, U.S. bird watchers counted eleven thousand six hundred and ten bald eagles in the country. If it were dropped from the Endangered Species List, the bald eagle would still be a threatened species. That means the bird would continue to get the same protection. No hunting allowed, and no disturbing of nests. But bald eagles still face tough times. The destruction of their natural homes could be the next DDT causing eagle numbers to drop quickly.
Questions 29 to 31 are based on the passage you have just heard.
29. What was the main harmful effect of the pest killer DDT on bald eagles?
30. What measure did wild-life biologists take to increase the number of bald eagles?
31. According to the speaker, what is the possible danger facing bald eagles?
Passage Three
A few years ago it was fashionable to speak of a generation gap, a division between young people and their elders. Parents complained that their children did not show them proper respect and obedience, while children complained that their parents did not understand them at all.
One important cause of the generation gap is the opportunity that young people have to choose their own life-styles. In more traditional societies, when children grow up, they are expected to live in the same area as their parents, to marry people that their parents know and approve of and often to continue the family occupation. In our society, young people often travel great distances for their education, move out of the family home at an early age, and choose occupations different from those of their parents.
In our modern society, parents often expect their children to do better than they did; to find better jobs, to make more money, and to do all the things that they were unable to do. But often they discover that they have very little in common with each other.
Finally, the speed at which changes take place in our society is another cause of the gap between generations. In a traditional culture, elderly people are valued for their wisdom, but in our society the knowledge of a lifetime may become obsolete overnight.
The best way to narrow the gap is that parents and children should be mutually respected.
Questions 32 to 35 are based on the passage you have just heard.
32. What does this passage mainly tell us?
33. Which one is the most important cause of the generation gap?
34. What are children expected to do in a more traditional society?
35. How do we narrow the gap?
America’s national symbol, the bald eagle, almost went extinct twenty years ago, but it has made a comeback. In fact, the U.S. Fish and Wild Life Service is considering the possibility of taking it off the Endangered Species List. Once, more than fifty thousand pairs of bald eagles nested across the country, but by 1960 that number had fallen to below four hundred. The chief killer was the widely used DDT. Fish soaked up DDT, died, and were washed up on the shores, where bald eagles feasted on them. DDT prevented eagle eggshells from thickening. The shells became so thin that they shattered before the babies hatched. Fortunately, in 1972, a law was passed to ban DDT, which saved the bald eagle from total wipeout. And since then, wild-life biologists have reintroduced bald eagles from Canada to America. The result was that last year, U.S. bird watchers counted eleven thousand six hundred and ten bald eagles in the country. If it were dropped from the Endangered Species List, the bald eagle would still be a threatened species. That means the bird would continue to get the same protection. No hunting allowed, and no disturbing of nests. But bald eagles still face tough times. The destruction of their natural homes could be the next DDT causing eagle numbers to drop quickly.
Questions 29 to 31 are based on the passage you have just heard.
29. What was the main harmful effect of the pest killer DDT on bald eagles?
30. What measure did wild-life biologists take to increase the number of bald eagles?
31. According to the speaker, what is the possible danger facing bald eagles?
Passage Three
A few years ago it was fashionable to speak of a generation gap, a division between young people and their elders. Parents complained that their children did not show them proper respect and obedience, while children complained that their parents did not understand them at all.
One important cause of the generation gap is the opportunity that young people have to choose their own life-styles. In more traditional societies, when children grow up, they are expected to live in the same area as their parents, to marry people that their parents know and approve of and often to continue the family occupation. In our society, young people often travel great distances for their education, move out of the family home at an early age, and choose occupations different from those of their parents.
In our modern society, parents often expect their children to do better than they did; to find better jobs, to make more money, and to do all the things that they were unable to do. But often they discover that they have very little in common with each other.
Finally, the speed at which changes take place in our society is another cause of the gap between generations. In a traditional culture, elderly people are valued for their wisdom, but in our society the knowledge of a lifetime may become obsolete overnight.
The best way to narrow the gap is that parents and children should be mutually respected.
Questions 32 to 35 are based on the passage you have just heard.
32. What does this passage mainly tell us?
33. Which one is the most important cause of the generation gap?
34. What are children expected to do in a more traditional society?
35. How do we narrow the gap?
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