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  3. They first arrived on British ships almost 200 years ago, with the aim of cu

They first arrived on British ships almost 200 years ago, with the aim of cu

游客2025-07-25  8
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. [br] The best title for the text would be ______.
选项 A、Killing Cats to Save Rats
B、Problems with Shipping Cats
C、Fighting between Cats and Rats
D、Keeping the Rat Population Down
答案 B
解析 主旨题。通读全文可知，文章说明的是英国人将猫引进阿森松岛以控制鼠患、但鼠患消除后猫患却生，以及人们为应对猫患、保护海鸟而采取的措施等内容。人们之所以要这样做，都是由于将猫引进该岛而引发了一些问题，因此Problems with Shipping Cats(海运引进猫类产生的问题)最能概括短文主旨、作短文标题。其余各项都不对：[A]指“杀猫救鼠”，[C]指“猫鼠之战”，[D]指“减少老鼠数量”。
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