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