单项选择题

A．because
B．for
C．as
D．since
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单项选择题
A．distributionsB．predictionsC．applicationsD．implications
A．distributions
B．predictions
C．applications
D．implications
单项选择题
A．receivedB．presidedC．admittedD．directed
A．received
B．presided
C．admitted
D．directed
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