单项选择题

The shortage of energy is getting worse. It________ an immediate solution.

A．calls off
B．calls up
C．calls for
D．calls at
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单项选择题
Yesterday Mr. Smith gave a vivid_________ of his recent visit to China.
A．dialogue
B．idea
C．tale
D．account
单项选择题
If the wounded soldier had been given first_________, he would not have died.
A．help
B．aid
C．care
D．attention
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