单项选择题

It is not as difficult to store information as it is to （） it quickly when it is wanted again.

A. represent
B. retain
C. restore
D. retrieve

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单项选择题
The magician’s talk creates a (n) （） of attention so that the audience does not see how he does his tricks.

A. diversion
B. derivation
C. disorder
D. interference
单项选择题
The meeting was （） over by the mayor of the city.

A. presumed
B. proposed
C. presented
D. presided
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