C．Kraemer will work with Chinese scientists in clone researches

　　D．about two thousand species will probably die out in a century

　　答案：D　根据第三段首句可知，约两千种哺乳动物和鸟类将在未来100多年的时间内灭绝，故选D项。

　　B

　　Every year some 15, 000

　　animals－mostly mice－are shipped into the UK for research. Some leading scientists are warning that pressure from animal rights activists is reducing the number of animals being brought into Britain for research. All ferry companies and all but two airlines have stopped importing animals intended for research laboratories.

　　Lord Drayson, who was a minister under the last Labour government, said animal research was “regrettably” necessary and that people would “suffer and die” without it. “If we do want to have access to medicines, and I believe that we do in a survey carried out in the past 10 years more than 87% of the general public have said that they support animal research for medical uses. And so unfortunately we do have to do this.”

　　However, Alistair Currie from People, for the Ethical Treatment of Animals (PETA) said researchers should work harder to come up with alternatives to animal testing. “More man 90% of drugs that pass trials in animals fail when they're given to people，”he said. They either prove to be unsafe or simply ineffective.

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