单项选择题

Only when they are injured______.

A．will some animals attack a human being
B．a human being will be attacked by some animals
C．some animals will attack a human being
D．that some animals attack a human being

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热门试题

单项选择题

The weight of the moon is only about ______ of that of the earth.

A．one eighty
B．one of eighty
C．one the eightieth
D．one eightieth

单项选择题

They elected Bush______President of ______ United States of America.

A．a, the
B．a, an
C．/, the
D．the, /