单项选择题

Writing is downgraded as if it is a clumsy __________ for more efficient means of preserving data and the findings or conclusions.

A．equivalent
B．alternative
C．substitute
D．succession
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单项选择题
As they minded their church business, they could not __________ taking political stands as well.
A．avoid
B．prevent
C．prohibit
D．restrain
单项选择题
It was a bold idea to build a power station in the deep valley, but it __________ as well as we had hoped.
A．came off
B．went off
C．made off
D．signed off
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