单项选择题

The technology exists to complement and______ the human mind.

A．amplify
B．enrich
C．stretch
D．enhance
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单项选择题
He was not ______ and preferred to be alone most of the time.
A．antisocial
B．gracious
C．sociable
D．cordial
单项选择题
Mary didn't ______the new rule that her father made of being home at 5 o'clock.
A．take in
B．take after
C．take on
D．take to
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