单项选择题

Silver is the best conductor of electricity, copper ______ it closely.

A．followed
B．following
C．to follow
D．being followed
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单项选择题
She ______ crying very helpful to express her sadness.
A．considers
B．confirms
C．believes
D．pretends
单项选择题
He drove to the airport to ______ Mr. Dixon who came to see him from Orilli
A．A. pick upB. set outC. call forD. turn down
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