单项选择题

A．in
B．of
C．with
D．of
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单项选择题
A．mechanicalB．mechanismC．machineD．machinery
A．mechanical
B．mechanism
C．machine
D．machinery
单项选择题
A．rather thatB．more thanC．exceptD．except that
A．rather that
B．more than
C．except
D．except that
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