单项选择题


A．in demand
B．need
C．demand
D．require
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单项选择题
A．so many asB．as many asC．as much asD．same
A．so many as
B．as many as
C．as much as
D．same
单项选择题
A．inB．byC．forD．with
A．in
B．by
C．for
D．with
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