问题
单项选择题
假定在一棵二叉树中，双分支结点数为15个，单分支结点数为32个，则叶结点数为______个。
A．15
B．16
C．17
D．47
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
假定在一棵二叉树中，双分支结点数为15个，单分支结点数为32个，则叶结点数为______个。
A．15
B．16
C．17
D．47
参考答案：B
| 阅读理解。 | |||||||||||||||
Survey about What Students Do in the Summer Vacation
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| 1. Most students _____ in the summer vacation. | |||||||||||||||
| A. learn some subjects B. play computer games C. do chores at home | |||||||||||||||
| 2. According to the survey, what the students like to do best is _____. | |||||||||||||||
| A. Study in the training school B. get together with their classmates C. do chores at home |