某二叉树的中序序列和后序序列正好相反,则该二叉树一定是______ 的二叉树。
A.空或只有一个结点
B.高度等于其结点数
C.任一结点无左孩子
D.任一结点无右孩子
参考答案:C
_____, Mother will wait for him to have dinner together. [ ]
A. However late he is
B. However he is late
C. However is he late
D. However late is he