某二叉树中度为2的结点有n个,则该二叉树中有______个叶子结点。
参考答案:n+1
—You look very cool today, Simon. —________. [ ]
A. Really? Thank you.
B. Oh, I don't think so.
C. No. I am not cool at all.
D. The same to you.
国际标准化组织的标准代号是()。
A.GB
B.ISO
C.IP
D.ASTM