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【单选题】
设无的顶点个数为n,则该图最多有()条边A.
n-1
B.
n(n-1)/2
C.
n(n+1)/2
D.
n*n
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反馈参考答案：
举一反三
【单选题】______so many people communicating in English every day, it will become more and more important to use English freely.
A.
As
B.
With
C.
Because
D.
If
【单选题】_________ little water is not enough for ________ many people.
A.
Such, so
B.
So, so
C.
Such, such
D.
So, such
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