Question

【题目】The other day, my brother drove his car down the street at _____ was a dangerous speed.

A.asB.whatC.whichD.that

Answer 1

【答案】B

【解析】

考查名词性从句。 句意：前几天，我哥哥在街上开车，以危险的速度行驶。分析句子结构，空后是介词at后的宾语从句；宾语从句中缺少主语，且指物，因此用what引导宾语从句，在从句中作主语。故选B项。