The teacher asked us not to our books or dictionaries when we are in the exam.
A. refer to
B. look up
C. take up
D. consult to
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(答案→)A. refer to
B. look up
C. take up
D. consult to
解析：考查动词短语辨析。根据句意：考试时老师不让我们看书查词典。A查阅，参考；B向上看；C占据（时间，空间等），从事，继续；D consult咨询，不与to连用。所以答案选A。