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  3. They first arrived on British ships almost 200 years ago, with the aim of cutting back a rapid growth of rat(鼠) population. Then

They first arrived on British ships almost 200 years ago, with the aim of cutting back a rapid growth of rat(鼠) population. Then

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问题     They first arrived on British ships almost 200 years ago, with the aim of cutting back a rapid growth of rat(鼠) population. Then the cats themselves became the problem. After dealing with the rats, they turned to birds — and now hundreds of them have been killed in a move to protect rare(稀有) birds. Even cat lovers have been persuaded to back the move, after being told that there was no other choice.
   When British sailors took control of Ascension Island in 1815, they found nobody living on it but that it was overrun with rats which had escaped from sinking ships. They introduced cats to kill the rats — and were soon overrun by cats. By 1820 they were sending back to England for dogs to kill the cats, but that didn’t work. Ever since, the wild cat population has been attacking the birds.
   Man introduced these cats, and it has disturbed the balance. Ascension Island is a most important seabird gathering place. We have to undo man’s mistake in bringing cats here. Action has been taken to kill off wild cats for the protection of birds. Only cats raised as pets are allowed. Since they are micro-chipped (加电子芯片), if they get caught they can be sent back to their owner. The action can be considered rather successful. The cat population is down to the last few — they’re the most difficult ones to catch.
People on the island have been taking action to ______.
选项 A、forbid having cats as pets
B、stop the wild cats’killing of birds
C、catch and kill all the cats
D、send all cats back to England
答案B
解析 细节题。对应的信息位于第三段第三句：Action has been taken to kill off wild cats for the protection of birds(人们已经采取行动捕杀野猫以保护鸟类)。由于前文已经说明是野猫数量太多，它们捕杀珍稀鸟类，所以此处的“保护鸟类”就是保护鸟类不被野猫捕杀，这与[B]项的意思是一致的。其余三项中，[A]是措施而不是目的，且它与原文不符；[C]中的kill all the cats不对；[D]属于曲解第二段倒数第二句中they were sending back to England(他们派人回英国)一处。
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