问题
选择题
You can see the stars on a clear night,but in the daytime they are . [ ]
A.unavoidable
B.invisible
C.inaccessible
D.unavailable
答案
答案：B
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You can see the stars on a clear night,but in the daytime they are . [ ]
A.unavoidable
B.invisible
C.inaccessible
D.unavailable
答案：B