Discoveries in genetics, molecular biology and genomics—all of______ provide significant benefits for human health—would not be

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问题 Discoveries in genetics, molecular biology and genomics—all of______ provide significant benefits for human health—would not be possible without the underlying knowledge of evolution.

选项 A、what
B、that
C、which
D、those

答案C

解析 本题空格处指代的是前面的名词“Discoveries in genetics,molecular biologyand genomics”,属于“介词+关系代词”引导的非限定性定语从句形式。在非限定性定语从句中,关系词不能用that和those。因此C项正确。
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