单项选择题

It has been said that the Acts provided a new course of action and did not merely regulate or enlarge an old one.

A. control
B. limit
C. replace
D. offset
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单项选择题
We have a responsibility to ensure our nation’s continued prosperity and the most sensible way to do this is by investment in basic scientific research.
A. effective
B. efficient
C. significant
D. reasonable
单项选择题
The steadily rising cost of labor has greatly increased the cost of shipping cargo by water.
A. suddenly
B. gradually
C. excessively
D. exceptionally
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