游客
题文

Let’s try doing the following experiment.
What to do:
Use string to hang a paper clip or other small object at about chest(胸部)level.
Pick up a stick,such as a broom handle. Take three or four steps away from the paper clip.
Now close one eye and walk toward the paper clip. Try to touch it with the tip of the stick. If you miss,try again,still keeping one eye closed. Now try it with both eyes open and see if it’s easier to do.
How it works:
In the experiment,you have to judge how far away the paper clip is. Your brain has several ways of doing this.
One simple way depends on how much your eye has to focus(聚焦)itself. Using only one eye,most people will find it difficult to touch the paper clip on the first try,but the brain still gets some information about distance—though not much.
Your brain can judge distance much better when you look at something with both eyes. In fact,your brain has more than one way to use both eyes in judging distance. For example,to see anything clearly,you have to make both of your eyes point at the object. When you look at a nearby object,your eyes turn inward. You can feel this happening if you look at the tip of your finger and move your finger toward your nose.
Your brain gets information from the eyes about how much they are pointing toward each other. Using that information,the brain can tell how far away any object is,whether it is a basketball or a paper clip.

How many materials do we need at least to do the experiment?

A.Two B.Three C.Four D.Five

The passage is mainly about that with eyes our brain can judge         .

A.how big an object is
B.how high an object is
C.how far away an object is
D.how much information an object is

Which of the following is true according to the passage?

A.Our brain judges distance in one way when we use both eyes.
B.Our brain cannot judge the distance of a small object but a big one.
C.How much our eyes focus helps our brain judge the size of an object.
D.How much our eyes focus helps our brain judge the distance of an object.

From the experiment we can infer(推断)         .

A.with one eye we can see an object as clearly as we use two eyes
B.our eyes turn towards the inside when we look at an object very near
C.within 3 or 4 steps,the nearer an object is,the more clearly we can see it
D.our brain can hardly get any information about distance when we use one eye
科目 英语   题型 阅读理解   难度 中等
登录免费查看答案和解析
相关试题

There was once a boy in a village. Whenever he asked people to do things, no one would listen to him. He was sad. So he asked a wizard(巫师) to solve the problem by using magic. The old wizard tried a lot of spells(咒语), but it didn’t work.
A young man heard about the problem. He went to the boy and said that he knew the solution. He gave the boy two small pieces of paper.
"These are two spells, my boy. Use the first before you ask others to do something, and use the second when they have done it. A smile is also necessary, "the young man said.
The boy was happy and tried to use the spells. When he asked people to do something, he said "Please" before his words and “Thank you”after they had done it. People were very surprised that the boy could be polite. Soon, they became happy to do what the boy asked them to do.
The wizard was surprised, and asked the young man about the spells.
"It's not magic. When I was a child, my teacher told me that with good manners you could get anything you want. And he was right. The boy only needed good manners to get what he wanted."
At first, when the boy asked for help, .

A.everyone helped him B.some people helped him
C.only a few people helped him D.nobody helped him

The young man give the boy two .

A.magical spells B.pieces of paper
C.smiles D.wishes

Who taught the young man to be polite?

A.The wizard
B.The people in the village
C.His teacher
D.the boy

What is the meaning of the underlined word “manners”?

A.礼仪 B.魔法 C.规则 D.智慧

Which of the statements are not true?

A.The boy changed a lot after the young man gave him the paper.
B.Later, People were happy to help the boy.
C.The young man taught the wizard the spells.
D.Good manner is important to our life.

One day, David bought a hot dog in a snack bar after school. Suddenly, he stopped and raised his head high. He kept looking at the sky. A woman passed by. She saw David looking at the sky, and she stopped and also looked at the sky. The sky was blue. There were somany white clouds. David still looked at the sky. The woman also looked at the sky. Many people stopped. They looked at the sky, too. After a while, David lowered(低下) his head. He laughed and asked. “What are you looking for in the sky?” The woman said: “why are you looking at the sky?” “I didn’t look at the sky.” David said. “My nose was bleeding.(流血)”
David bought a hot dog on his way to school.
The women stopped because she saw David looking at the sky.
Not many people looked at the sky.
Later, David lowered his head.
There isn’t anything special in the sky.

Because it was Sunday, Jim didn’t go to school. He helped his father in the garden. After two hours in the garden, he was tired. He went in the room and took out an ice-cream from the fridge. He asked his father if (是否)he felt thirsty(口渴的). And if he said yes he would bring him a bottle of cola. But his father said no. And he told Jim when he was young, he often helped his parents with the work on the farm. Sometimes the weather was hot and sometimes it was cold and windy. But he never gave up just because he was hungry or thirsty. He thought a real man could stand everything that others can’t bear(忍受).
Why didn’t Jim go to school ?
A. Because it was Sunday.
B. Because his family was poor.
C. Because he likes doing housework.
What did Jim do on Sunday?
A. He helped his father in the garden.
B. Watched TV all day.
C. Went to school.
Jim took out ___________from the fridge.
A. an apple B.an ice -cream C. a pear
When the father was young, he often helped his _______with the work on the farm.
A. daughter B. parents C. son
Did his father drink cola?
A. Yes, he did.
B. No, he didn’t.
C. He ate an ice-cream.

I have four good friends. We are in the same school. In some ways, we are different. I am more outgoing than them. They are very quiet. So they all like reading books. And they are thinner than me. I am very fat. I want to be as thin as them. But in some ways, we have something in common. For example, we all have dreams. I am going to be a teacher when I grow up. Because I like children. Tom wants to be a doctor when he grows up. Linda wants to be an engineer when she grows up.Because he is good at science. Bob wants to be a policeman when he grows up. And Lisa wants to be a nurse when she grows up. I hope we can make our dreams come true one day.
How many friends does the writer have?
A. Four. B. Three. C. Six.
My friends are_________ than me.
A. less outgoing
B. more outgoing
C. outgoing
Tom wants to be a ________ when he grows up.
A. doctor B. nurse C. scientist
Does Bob want to be a policeman when he grows up?
A. Yes, he does.
B. No, he doesn’t
C. We don’t know.
Does Lisa want to be a policewoman when she grows up?
A. Yes,she does.
B. No, she doesn’t.
C. We don’t know.

Last week, I did a survey in my class and asked each student what they thought of the TV shows. Let’s have a look at the result.
Bill loves watching sports games best because he likes playing sports. Tom likes playing sports,too. Tom likes talk shows because they are interesting. Lily can’t stand soap operas. But Lucy says she doesn’t mind watching them if she has spare (空闲的)time. Lucy’s favorite TV shows are game shows. She loves watching them a lot. And everyone in my class likes watching sitcoms.
Last week, I did a survey in my class.
Bill doesn’t love watching sports games.
Lily can’t stand soap operas.
Lucy’s favorite TV shows are sports shows.
Everyone in my class likes watching comedies.

Copyright ©2020-2025 优题课 youtike.com 版权所有

粤ICP备20024846号