题目内容
【题目】A scientist’s attempt to produce the world’s first gene-edited babies _____ are immune to HIV has sparked controversy in academia and the public.
A. as B. who
C. whom D. whose
【答案】B
【解析】
考查定语从句。句意为:一位科学家试图培育出世界上首个对HIV有免疫力的基因编辑婴儿,这在学术界和公众中引发了争议。定语从句的先行词为babies,且从句缺少主语,故用关系代词who引导从句。故选B。
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