单项选择题

The study also notes a steady decline in the number of college students taking science courses.

A．relative
B．general
C．continuous
D．sharp
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单项选择题
It is possible to approach the problem in a different way.
A．handle
B．raise
C．pose
D．experience
单项选择题
He asserted that nuclear power was a safe and non-polluting energy source.
A．maintained
B．recommended
C．considered
D．acknowledged
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