题目

题型：不详难度：来源：

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

A．of which

B．with which

C．about which

D．into which

答案

C

解析

考察定语从句。该句为定语从句，先行词为subject, 在从句中作argue about 的宾语。
Argue about sth 就……话题进行争论
句意为，枪支的控制是一个美国人争论了很长时间的话题。