单项选择题

In previous times, when fresh meat was inadequate , pigeons were kept by many households as a source of food.

A．in short store
B．in short provision
C．in short reserve
D．in short supply
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单项选择题
A．AmericaB．BritainC．CanadaD．France
A．America
B．Britain
C．Canada
D．France
单项选择题
The tomato juice left a brown stainon the front of my jacket.
A．track
B．trace
C．spot
D．point
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