单项选择题

If the world is to remain peaceful the utmost effort must be made by nations to limit local （）

A．collisions
B．combats
C．contradictions
D．conflicts

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单项选择题
Satellite communications are so up-to-date that even when （）in the middle of the Pacific, businessmen can contact their offices as if they were next door.

A．gliding
B．cruising
C．piloting
D．patrolling
单项选择题
The fire has caused great losses, but the factory tried to （）the consequences by saying that the damage was not as serious as reported.

A．decrease
B．subtract
C．minimize
D．degrade
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