单项选择题
某二叉树的前序遍历序列与中序遍历序列相同，均为ABCDEF，则按层次输出(同一层从左到右)的序列为A.ABCD...
单项选择题 某二叉树的前序遍历序列与中序遍历序列相同，均为ABCDEF，则按层次输出(同一层从左到右)的序列为A.ABCDEFB.BCDEFAC.FEDCBAD.DEFABC
The sentence "Tom was cutting a piece of metal with gre...
判断题The sentence "Tom was cutting a piece of metal with great care" is a periodic sentence. A、正确 B、错误
In illustration essays, what kind of examples can write...
多项选择题In illustration essays, what kind of examples can writers use? （ ） A. General B. Specific C. Representative D. Relevant
