单项选择题

The______ drinking of liquor is much less harmful than habitual use.

A．occasional
B．frequent
C．continual
D．constant
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单项选择题
George knew that it was difficult for him to clear the height, but he succeeded upon his third______
A．attempt
B．temptation
C．display
D．action
单项选择题
Many people suggest that the government______ a consumer protection agency.
A．institute
B．generate
C．entitle
D．secure
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