Question

【题目】________ cloning may be used for medical treatment, everyone doesn’t support it.

A. While B. As

C. Since D. Unless

Answer 1

【答案】A

【解析】

考查连词词义辨析。句意：虽然克隆可以用于医疗，但并不是每个人都支持。A. While虽然；B. As因为；C. Since自从；D. Unless除非。故选A。