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根据上下文,在每个空格处填入一个适当的单词,使文章意思通顺、前后连贯、结构完整。

Nowadays, with the development of science and technology, cloning has become a hot topic for many people. Some people are against it ,while others are in favour 48it. Personally, I wouldlike to say that cloning is good  49the human race.

50 , cloning technology proves helpful for genetics researchers. With cloning technology, scientists 51bring some animals that are extinct back to life. Secondly, cloning body parts can serve as a lifesaver for people 52 are seriously ill. When a body organ such as a kidney or heart fails to function, it may be possible to replace it 53a cloned one. Thirdly, if a couple can’t have 54child, human cloning technology will make it possible for them to have a child. All in all, I firmly believe that cloning is beneficial 55the human race.

高二英语填空题中等难度题

少年,再来一题如何?
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