单项选择题

China is no longer______it used to be.

A．what
B．of what
C．if
D．which
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单项选择题
It was______he was too clumsy to drive a car that Jim hadn't learned to drive.
A．as
B．for
C．because
D．because of
单项选择题
______,they have boldly undertaken the construction of a 26 storied building.
A．As they are young
B．Young as they are
C．They are as young
D．As young as they are
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