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A、To reintroduce bald eagle into America. B、To consider the possibility of taking bald eagle out of America. C、To delete bald ea
A、To reintroduce bald eagle into America. B、To consider the possibility of taking bald eagle out of America. C、To delete bald ea
admin
2015-04-30
112
问题
The bald eagle is America’s national symbol. However, the species almost went extinct 30 years ago, which lead lots of people into disappointment and depression. Nowadays, it has made a comeback.
(23)In fact, the U. S. Fish and Wildlife Service is considering the possibility of taking it off the endangered-species list.
Once, more than 50,000 pairs of bald eagles nested across the country. But by 1960, that number had fallen below 400. How did it happen?
The chief killer was the widely used DDT which is a poisonous pesticide. Fish soaked up DDT, died, and were washed up on shores, where bald eagles feasted on them.
(24)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 the use of DDT, which saved the bald eagle from total wipeout. And since then, wildlife biologists have reintroduced bald eagles from Canada to America. The result was that last year U. S. birdwatchers counted as many as 11, 610 bald eagles in the country.
However, even if it were dropped from the endangered 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 as before.
But bald eagles still face tough times.(25)The destruction of their natural homes could be the next DDT causing eagle numbers to drop quickly.
Questions 23 to 25 are based on the passage you have just heard.
23. What is the U. S. Fish and Wildlife Service’s consideration of bald eagles right now?
24. What harmful influence does DDT have on bald eagles?
25. According to the speaker, what may be the next DDT facing bald eagles?
选项
A、To reintroduce bald eagle into America.
B、To consider the possibility of taking bald eagle out of America.
C、To delete bald eagle from the endangered-species list.
D、To change the endangered-species list.
答案
C
解析
细节题。要答对本题,需抓住题目中的主语U.S.Fishand Wildlife Service,文中提到美国鱼类和野生动物服务组织正在考虑将秃鹰从濒危物种名单上删除,to delete from和take off同义,通过排除法及文章后面部分的信息,也可知选C。
转载请注明原文地址:https://kaotiyun.com/show/DzQ7777K
0
大学英语六级
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