单项选择题

There is not a conductor ______ resists the flow of the electrical charges.

A．which
B．but
C．that
D．it
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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
Moreover, in the modern age ______ human beings depend so much on machines, Francis Chichester had given men throughout the world new pride.
A．when
B．whether
C．more
D．ever
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