题目

题型：不详难度：来源：

Gun control is the subject ________ Americans have argued for a long time.

A．which

B．with which

C．about which

D．of which

答案

C

解析

考查定语从句。argue about 争论什么，先行词为the subject，故用about which，句意：控制枪支是一个美国人争论了很长一段时间的话题。