Question

It was in the lab ______ was taken charge of by Professor Harris _______ they did the experiment.

A．which , that

B．that, where

C．whom, that

D．which, where

Answer 1

A

试题分析：考查定语从句和强调句型。第一空关系代词Which引导定语从句，在句中做主语。第二空that与it was构成强调句型。句意：就在由Harris教授负责的那个实验室里，他们做了那个实验。故A正确。
点评：定语从句的考查主要是分析句子成分；强调句型的考查关键在于找准被强调的成分。