embrace选择能代替的选项()

We know from Paragraph 2 that______.A．most Yahoos can feel the busy atmosphere in their officesB．some Yahoos always don't come to work with a good excuseC．the memo may sound irrational to many of Yahoo's employeesD．employees are to blame for the shrink of Yahoo's market value 点击查看答案

一棵满二叉树共有64个叶子结点，则其深度为()。

A.4
B.6
C.7
D.8

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