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
Britain's press is unusual______ it is divided into two very different types of newspaper: the quality press and the popular press.
A．in how
B．in what
C．in which
D．in that
单项选择题
By the end of the class, some students______ green food.
A．have found
B．will be finding
C．will have found
D．are finding
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