As is often the case, a telescope is ___
题型:选择题
问题:
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
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