问题
选择题
As is often the case, a telescope is ________ to see clearly either in cloudy or sunny night.[ ]
A. acceptable
B. adjustable
C. changeable
D. avoidable
答案
答案：B
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As is often the case, a telescope is ________ to see clearly either in cloudy or sunny night.[ ]
A. acceptable
B. adjustable
C. changeable
D. avoidable
答案：B