单项选择题

The principal duty of the United Nations is to safeguard the pace of the world.

A．primary
B．prime
C．privileged
D．precedent
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单项选择题
They suggested that an agency be created to carry out the recommendation of the committee.
A．implement
B．compliment
C．supplement
D．complement
单项选择题
In the 1998's flood in China a large number of victims suffered the loss of their homes.
A．expense
B．sacrifice
C．damage
D．incentive
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