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7. Experiments in genetic engineering have created important __________ to find cures for many cancers.
(A)drawbacks 
(B)breakthroughs 
(C)accusations 
(D)obstacles


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我愛阿摩,阿摩愛我 (2018/03/08)
Experiments (實驗)in genetic engineering(基因工程學) have created important __________ to find cures for many ca.....看完整詳解
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嗡阿喇巴札那諦(Lin) 大一下 (2017/04/26)

Experiments in ge☆☆☆☆☆ ...



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7. Experiments in genetic engineering ha..-阿摩線上測驗