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【简答题】
已知一棵二叉树的中序序列为 cbedahgijf ,后序序列为 cedbhjigfa ,要求写出该二叉树的先序遍历序列并画出先序线索二叉树的逻辑示意图。
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【单选题】Jim, the newly elected director, had to reorganize the entire office he angrily complained of his ______, who had been so incompetent that everything was left in a mess.
A.
successor
B.
ancestor
C.
predecessor
D.
forefather
【单选题】Jim, the newly elected director, had to reorganize the entire office; he angrily complained of his _________, who had been so incompetent that everything was left in a mess.
A.
successor
B.
ancestor
C.
predecessor
D.
forerunner
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