单项选择题

Medical students are advised that the wearing of a white coat ______ the acceptance of a professional code of conduct expected of the medical profession.

A．supplements
B．simulates
C．signifies
D．swears
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单项选择题
It was a wonderful occasion which we will ______ for many years to come.
A．conceive
B．clutch
C．contrive
D．cherish
单项选择题
Jack is not very decisive, and he always finds himself in a ______ as if he doesn’t know what he really wants to do.
A．fantasy
B．dilemma
C．contradiction
D．conflict
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