题目内容
【题目】The murder reminded us of gun control—a subject people have argued for a long time.
A. of whom B. about whom
C. about which D. of which
【答案】C
【解析】句意:这起谋杀事件使我们想起了枪支管制——一个人们争议已久的话题。分析句子结构可知,空处引导定语从句,修饰先行词a subject;argue about sth.意为“争论有关……”,是固定搭配,故答案选C项。

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