单项选择题

Computers will flourish because they enable us to accomplish tasks that could never before have been undertaken.

A. implement
B. render
C. assign
D. complete
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单项选择题
It is true that London is often sunless, damp and raw, though the occasional sunny days seem all the more attractive by contrast.
A. mild
B. chilly
C. cloudy
D. moist
单项选择题
The new book focuses on the concept that to achieve and maintain total health, people need physical, social and emotional well-being.
A. attain
B. gain
C. acquire
D. gather
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