单项选择题

The Japanese scientists have found that scents ______ efficiency and reduce stress among office workers.

A. enhance
B. amplify
C. foster
D. magnify
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With prices ______ so much, it is difficult for the school to plan a budget.
A. vibrating
B. fluctuating
C. fluttering
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This is an ideal site for a university ______ it is far from the downtown are
a.A. provided thatB. now thatC. so thatD. in that
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