单项选择题

It is important to remember the saying that ______is better than cure.

A．prevention
B．promotion
C．permission
D．proportion
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单项选择题
Winning or losing is temporary, but friendship______.
A．expects
B．lives
C．remains
D．lasts
单项选择题
It is so hot. You should put the food into the refrigerator now. Otherwise, it will soon______.
A．harm
B．hurt
C．spoil
D．damage
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