Question

Gun control is a subject ________Americans have argued for a long time,

A．of which

B．with which

C．into which

D．about which

Answer 1

D

解析试题分析：考查定语从句：介词+which引导的定语从句修饰subject，从句中argue是不及物动词，argue about sth“争论某事”选D。
考点：考查定语从句
点评：定语从句的介词要根据先行词的搭配，或者从句中的动词，名词的搭配来选择。