单项选择题

During a period of sleep deprivation the effects of sleeplessness may become ______.

A．total
B．increased
C．collective
D．cumulative
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单项选择题
The council has said that jobs will have to be cut in order to balance the ______.
A．resources
B．budget
C．potential
D．consumption
单项选择题
The chief referee's final whistle came as a ______ relief to the defeating team.
A．merciful
B．impartial
C．conscientious
D．conspicuous
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