单项选择题

Our reporter has just called to say that rescue teams will ______ to bring out the trapped miners.

A. effect
B. affect
C. conceive
D. endeavor
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单项选择题
As an excellent shooter, Peter practiced aiming at both ______ targets and moving targets.
A. stationary
B. standing
C. stable
D. still
单项选择题
China started its space industry only in recent years, and should ______ no time in catching up.
A. delay
B. lag
C. lessen
D. lose
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