It was in the lab, was taken charge of by Professor Curie, they did the experiment.
A. where; that
B. that; that
C. which; that
D. which; where
网友回答
A. where; that
B. that; that
(答案→)C. which; that
D. which; where
解析：第一空考查非限制性定语从句，先行词the lab关系词which在从句中做主语；第二空考查强调句型填that。