单项选择题

The old couple were not rich themselves, but they hated to turn away anyone who were ______food and shelter.

A．at the mercy of
B．on the point of
C．with the exception of
D．in need of
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单项选择题
Living in the central Australian desert has its problems, ______obtaining water is not the least.
A．of which
B．for what
C．as
D．whose
单项选择题
The owner of the auto plant refused to raise the workers' wages, saying that it would ______the profit.
A．cut off
B．cut short
C．cut into
D．cut up
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