题目内容

某二叉树的先序遍历序列为 ABCDEF ，中序遍历序列为BADCFE ，则该二叉树的高度(即层数)为( )。

A. 3
B. 4
C. 5
D. 6

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任何一颗二叉树的叶子结点在先序、中序、后序遍历序列中的相对次序（）。

A. 肯定不会发生改变
B. 肯定发生改变
C. 不能确定
D. 有时发生变化

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Read Text A, Unit 8, then finish the following exercises.Who is a noted disbeliever in climate change?

A. Boris Johnson.
B. Emmanuel Macron.
C. Jair Bolsonaro
Donald Trump.

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Which country decided to dispatch armed forces to fight the fires?

A. Brazil.
Britain.
C. French.
D. England.

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which of the follow statement is NOT true according to Brazilian President Jair Bolsonaro?

A. The fires are due to dry, hot weather.
B. The fires are the deliberate actions of nongovernmental organizations whose funding has been cut?
C. The fires are due to the aggressive exploitation of the Brazilian rainforest.
D. The fires are an “internal issue” of Brazil and the countries directly involve.

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某二叉树的先序遍历序列为 ABCDEF ，中序遍历序列为BADCFE ，则该二叉树的高度(即层数)为( )。

A. 3 B. 4 C. 5 D. 6

任何一颗二叉树的叶子结点在先序、中序、后序遍历序列中的相对次序（ ）。

Read Text A, Unit 8, then finish the following exercises.Who is a noted disbeliever in climate change?

Which country decided to dispatch armed forces to fight the fires?

which of the follow statement is NOT true according to Brazilian President Jair Bolsonaro?

A. 3
B. 4
C. 5
D. 6

任何一颗二叉树的叶子结点在先序、中序、后序遍历序列中的相对次序（）。