问题 单项选择题

某二叉树共有60个叶子结点与50个度为1的结点,则该二叉树中的总结点数为( )。

A.148

B.169

C.182

D.198

答案

参考答案:B

解析: 叶子结点总是比度为2的结点多一个。所以,具有60个叶子结点的二叉树有59个度为2的结点。总结点数=60个叶子结点+59个度为2的结点+50个度为1的结点=169个结点。

综合

读漫画,回答下列问题:

(1)该漫画反映了_______                               __问题;该问题在我国产生的原因是_______________    

                                                                                                                                                               

                                                                                 

(2)我国水资源分布的时空特点是________________________;该分布特点对我国水资源利用的影响是

                                                                                                                                                               

                                                                                                                                                               

                                                                                                          ; 解决途径有___                           

    __________________________                                                                                                     ___

名词解释