六级练习2015.02.17
[audio]http://sound.yywz123.com/tingbbs/cet6/cet620150217.mp3[/audio]Fortunately, in 1972, a law was passed to ban DDT, which saved the bald eagle from total wipeout. And since then wild life biologists had reintroduced bald eagles from Canada to America.
The result was that last year U.S. bird watchers counted (1)__________________________in the country. If it were dropped from the Endangered Species List, the bald eagle (2)___________________. That means the bird would continue to get the same protection. No hunting allowed, and (3)_________________. But bald eagles still face tough times. The destruction of their natural homes could be the next DDT causing eagle numbers to drop quickly.
**** Hidden Message *****
页:
[1]