单项选择题

An energy tax would curb ordinary air pollution, limit oil imports and cut the budget __________

A．disposition
B．discrepancy
C．defect
D．deficit
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单项选择题
The toy maker produces a __________ copy of the space station, exact in every detail.
A．minimal
B．minimum
C．miniature
D．minor
单项选择题
The designer has applied for a __________ for his new invention.
A．tariff
B．discount
C．version
D．patent
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