问题
单项选择题
对下列二叉树进行中序遍历的结果是( )。
答案
参考答案：A
解析： 二叉树的遍历有3种：前序、中序和后序。中序遍历首先遍历左子树或左子结点，然后访问根结点，最后遍历右子树或右子结点。分析本题二义树，对其进行中序遍历，结果为ACBDFEG。
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对下列二叉树进行中序遍历的结果是( )。
参考答案：A
解析： 二叉树的遍历有3种：前序、中序和后序。中序遍历首先遍历左子树或左子结点，然后访问根结点，最后遍历右子树或右子结点。分析本题二义树，对其进行中序遍历，结果为ACBDFEG。
Today is Sunday. Mike and Peter go to school. Listen! They are talking about the life in the room.  “ will the world be like? ”Peter asks. “I think that the world will be a place to live in. And we will machines and robots at home. They will help us do lots of , ”says Mike. “The robots will help cook dinner, clean the houses and old people. I think there will be a kind of medicine(药) it can make us live more than 100 years, ”Peter says. “What will you do then? ”says Mike. “Then I will my great-grandchildren(曾孙)to the moon, ”says Peter. “The moon? I will go to the Mars(火星)with my wife, ”says Mike.
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