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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