单项选择题


A．imported
B．exploited
C．specified
D．received
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单项选择题
A．fromB．downC．outsideD．back
A．from
B．down
C．outside
D．back
单项选择题
A．eventuallyB．relativelyC．hardlyD．generally
A．eventually
B．relatively
C．hardly
D．generally
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