单项选择题

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

A．store
B．provision
C．reserve
D．supply
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单项选择题
Parts of the hard-working Wisconsin River ______; its fish have a sulphurous odor.
A．stink
B．damp
C．junk
D．foul
单项选择题
He is holding a ______ position in the company and expects to be promoted soon.
A．subordinate
B．succeeding
C．successive
D．subsequent
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