问题
选择题
It was in the lab ______ was taken charge of by Pro. Harris ______ they did the experiment.
A．which; where
B．that; which
C．whom; that
D．which; that
答案
答案：D
考查含有定语从句的强调句型，第一空考查的是定语从句，从句中缺少主语，故用关系代词that/which，第二个空that为强调句型的标志。句意：就是在由Pro. Harris负责的实验室里他们做的实验。故选D。