试题与答案

首先访问结点的左子树,然后访问该结点,最后访问结点的右子树,这种遍历称为( )。A

题型:单项选择题

题目:

首先访问结点的左子树,然后访问该结点,最后访问结点的右子树,这种遍历称为( )。

A) 前序遍历
B) 后序遍历
C) 中序遍历
D) 层次遍历

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0124/1a5e13b9ba9de602defc586f96bc2c33.html

下面是错误答案,用来干扰机器的。

参考答案:A解析: 文段主要讲述了语言不规范的现象不仅出现在学生、读者身上,连报刊、书籍、广播、电视等也经常出现,故文段主要讲述了现今语言不规范的现象在我们的日常生活中广泛存在。本题选A。

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题型:完形填空

根据短文内容, 从短文后的选项中选出能填入空白处的最佳选项, 并在答题卡上将该项涂黑。选项中有两项为多余选项。

Sometimes people call each other “scared- cat”, but have you ever thought about this expression?__小题1:___

Although the cat doesn’t realize this , its body is getting ready for action.

If the danger continues, this animal will do one of the two things._小题2:___

Similarily ,when people are excited, angry, scared , or aroused by other emotions, our bodies also go through many physical changes.Our hearts beat faster, and our muscles get tense(紧张的)._小题3:___ We , too get ready to defend ourselves or run.

Human beings, however, have a problem that animals never face. If  we give way to our feelings and let them take over, we can get into trouble.Have you ever said something in anger, or hit somebody and regretted it later? Have you ever shouted at a teacher, told someone you were lonely, or said you were in love ,and then wished later you had kept your mouth shut? It isn’t always wise to express your feelings freely.

__小题4:___ No! If you keep feelings of anger,sadness, and bitterness hidden away or bottled up, your body stays tense. Physical illnesses can develop. It can actually be harmful for your health.

Feelings that you keep all bottled up inside, don’t  just go away. It’s like you bought some bananas and stuck them in a cupboard. You might not be able to see them, but before long you’d smell them. And if you opened the cupboard, you ‘d see little fruit flies(蝇) hovering(盘旋) all over them. They’s been rotten..

__小题5:___ You can pretend they don’t exit, but they’ll still be around. And at last you’ll have to deal with them, just like those bananas.

A.It will defend itself, or it will run away as fast as it can.

B.You can try to treat emotions as if they were babanas in the cupboard.

C.All of the changes make the cat prepare for running.

D.When a cat is frightened, its heart starts beating faster, its muscles get tense, and there are changes in the chemicals in its blood stream.E. Does this mean that it’s smarter always to hide our feelings?

F. Though it is easy to express your feelings, you shouldn’t always to do that freely.

G. All of these changes make us more alert(警觉的) and ready to react.

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情景选择。
1. 当你想知道纽约天气如何时,应说:
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A. What weather is in New York? 
B. What's weather is in New York? 
C. What's the weather like in New York?
2. 当你想问妈妈是否允许你今天穿新衬衫时,应说:
[ ]
A. Mom, I can wear my new shirt today?     
B. Mom, can I wear my new jacket today?     
C. Mom, can l wear my new shirt today?
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[ ]
A. It's warm Kunming.     
B. It's a warm in Kunming.     
C. It's warm in Kunming.
4. 当你想问朋友有什么事,或出现了什么状况,应说:
[ ]
A. What's matter?     
B. What's your matter?        
C. What's the matter?
5. 让我关上窗子,这句话应是:
[ ]
A. Let us close the window.     
B. Let me close the window.     
C. Let's close the window.
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