阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

Cloning is a way of 【小题1】(make) an exact copy of another animal and plant.【小题2】 has two major uses. One is 【小题3】 gardeners use it to produce commercial quantities of plants. The 【小题4】 is that it is valuable for research on new species and for medical research on animals. 【小题5】, the process of cloning is difficult to undertake.

Many attempts to clone mammals failed. The first successful clone, Dolly the sheep, made the whole 【小题6】(science) world follow its process, though it had 【小题7】 problems than the normal sheep. On the other hand, Dolly’s appearance 【小题8】(raise) a storm of objections and had a great impact 【小题9】 the media and public imagination. Different people have different opinions of it. However, scientists still wonder whether cloning will help 【小题10】 harm us and where it is leading us.