It was in the lab ________was taken charge of by Johnson ________they did the ex

题型：不详难度：来源：

It was in the lab ________was taken charge of by Johnson ________they did the experiment.

A．where；which

B．which；that

C．which；which

D．that；which

答案

B

解析

试题分析：考查复杂句：第一空是定语从句先行词是the lab，定语从句中缺少主语，用that或which引导定语从句，第二空是强调句，强调的是in the lab，句意：就是在Johnson负责的实验室，他们做实验的。选B。
点评：两个以上的从句构成的复杂句相对较难，但如果学会分析句子，也可以准确找出答案，平时的训练不可少。往往题目会将定语从句和强调句放在一起，这时要理解句意进行判断。