单项选择题

Users of heating oil were unaffected by the coal ______.

A．decline
B．vacancy
C．rarity
D．shortage
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单项选择题
There were no ______ of the Sunday Papers due to a printer's strike.
A．publicatins
B．volumes
C．editions
D．periodicals
单项选择题
In this decade of limited educational ______, the purchase of computer equipment has proceeded so rapidly.
A．interest
B．finance
C．budget
D．currency
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