单项选择题


A．effect
B．affect
C．influence
D．impact
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单项选择题
A．will beB．should have beenC．might have beenD．would be
A．will be
B．should have been
C．might have been
D．would be
单项选择题
A．haveB．withholdC．withdrawD．withstand
A．have
B．withhold
C．withdraw
D．withstand
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