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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单项选择题
Small farms and the lack of modem technology have （）agricultural production.

A．blundered
B．tangled
C．bewildered
D．hampered
单项选择题
The prisoner was （）of his civil liberty for three years.

A．discharged
B．derived
C．deprived
D．dispatched
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