题目

题型：不详难度：来源：

______ he referred to in his article was unknown to the general reader.

A．That

B．What

C．Whether

D．Where

答案

A

解析

主要测试主语从句。句子______ he referred to in his article在复合句中充当主语，同时该句子中缺少介词to的宾语，双重作用。答案一目了然。