单项选择题

In those days, dental equipment was ______ and a visit to the dentist was a painful experience.

A．bizarre
B．advantageous
C．primitive
D．unique
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单项选择题
Two suspects have been ______ by the police for questioning.
A．retained
B．detained
C．repelled
D．excelled
单项选择题
You've got nothing to ______ yourself -- it was his own decision.
A．reproach
B．relish
C．reserve
D．represent
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