Cloningisawayof1
問題詳情:
Cloning is a way of 1_________(make) an exact copy of another animal or plant. It has two major uses. One is that gardener use it to produce commercial quantities of plants. The 2______ is that it is 3________(value) for research on new species and for medical research on animals. However, the process of cloning is difficult 4________(undertake).
Many 5_________(attempt)to clone mammals failed. The first successful clone, Dolly the sheep, made the whole scientific world follow its process, though it had 6_______(many) problems than the normal sheep. On the other hand, Dolly’s appearance 7_________(raise) a storm of objections and had a great impact 8_________the media and public imagination. Different people have different opinions on it. However, scientists still wonder whether cloning 9_______(help) or harm us and 10________ it is heading us.
【回答】
1. making 2. other 3. valuable undertake mpts
ed 8. on help 10. where
知識點:語法填空
題型:未分類
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