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Cloning has always been with us and is here to stay. It is a way of making 【小题1】 exact copy of another animal or plant. Cloning plants is straightforward while cloning animals is very complicated. The process of cloning is a difficult task 【小题2】(undertake) Many attempts to clone mammals failed. But finally the determination and patience of the scientists paid 【小题3】 in 1996 with a breakthrough-the cloning of Dolly the sheep.

At first the fact 【小题4】 she seemed to develop normally was very encouraging. Then came the 【小题5】(disturb) news that Dolly had become seriously ill, which made cloning scientists cast down. Meanwhile, Dolly’s appearance raised a storm of 【小题6】(object) and had a great impact on the media and public imagination. 【小题7】(apparent) it became controversial. Although at present human egg cells and embryos 【小题8】(need)for cloning research are hard to obtain, newspapers wrote of evil leaders 【小题9】(hope) to clone themselves to attain their ambitions. Religious leaders also raised moral questions. Some countries reformed their legal systems and 【小题10】(forbid) research into human cloning, but others like China and the UK, continued to accumulate evidence of the abundant medical aid that cloning could provide.

17-18高二下·山东东营·期末
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