In the experiment the researcher placed a rat in a maze ( ) it was presented with different smells to see if it can.
2023-05-26
A. what
B. that
C. where
D. which
参考答案：C
B. that
C. where
D. which
参考答案：C
考查定语从句，“在这个实验中，是将小白鼠放置在雾霾中进行测试”，in a maze是先行词，是一种状态，且后面的从句是个完整的句子，所以应该用关系副词，故选项C正确。A项不用于定语从句中;B项that在定语从句中通常充当主语或宾语，修饰人或物;D项的先行词应该是物。
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