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