单项选择题

Some developed countries are trying to ______ the serious problems resulting from the energy crisis.

A．step up
B．cope with
C．cut off
D．end up
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单项选择题
Just take it easy and ______ us exactly what has happened.
A．say
B．speak
C．tell
D．talk
单项选择题
This company is closing up, so lots of workers will be laid ______.
A．down
B．out
C．off
D．aside
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