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Have you ever wondered?
1.      Why do airplanes take longer to fly west than east?
It can take five hours to go west-east from New York (NY) to London but seven hours to travel east-west from London to NY. The reason for the difference is an atmospheric phenomenon (大气现象) known as the jet stream (气流). The jet stream is a very high altitude (=" above" sea level) wind which always blows from the west to the east across the Atlantic. So the planes moving at a constant air speed go faster from the west to the east when they are moving with the wind than in the opposite.
2.      What would happen if the gravity on Earth was suddenly turned off?
Supposing we could magically turn off gravity. Would buildings and other structures(建筑物)float away? What happened would depend on (依靠) how strongly the things were attached (吸附) to the earth. The earth is moving at quite a speed, moving at over a thousand miles per hour. If you turn something around your head on a string, it goes around in a circle until you let go of the string. Then it flies off in a straight line. ‘Turning off’ gravity would be like letting go of the string. Things not attached to the earth would fly off in a straight line. People in buildings would suddenly shoot upwards at a great speed until they hit the ceiling (=" top" surface of a room). Most things outside would fly off into space.
What information can we get from the first passage?

A.It is the jet stream that affects how fast airplanes fly.
B.Planes go slower when they are moving with the wind.
C.It takes more time to fly from NY to London than from London to NY.
D.The jet stream always blows from the east to the west across the Atlantic.

The underlined word “shoot” in the 2nd paragraph means “_________”.

A.send for B.move quickly C.come out D.grow quickly

It can be known that without gravity _________.

A.buildings and other structures would float away
B.trees and buildings would not so easily fly off
C.something around your head would not float away
D.everything outside buildings would fly off into space

Where can we read this passage?

A.In a research paper. B.In a short story.
C.In a travel magazine. D.In a student’s book
科目 英语   题型 阅读理解   难度 中等
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相关试题

Tom, an 11-year-old boy, was ill. He had got a cough, and his mother was worried and took him to see a doctor. The doctor looked over Tom carefully and said, “Tom, nothing serious.” Then he gave him some medicine. These are the words on the instruction of the cough medicine.

Instruction(说明)
Take three times a day after meals.
Dose (剂量): Grown-ups: 2 spoon(汤匙) each time
Children (8-14 years old): one spoon
(4-7 years old): 1/2 spoon
Not fit for children below(在……之下) the age of 4.
Notes: 1.Store(储存)in a cold place.[来源源:学
2. Use before Oct., 2006.
Add: No. 10 Nanjing Road, Shanghai

根据短文内容,判断正(T)误(F)。
Tom should take three spoons a day.
Tom had better have his meals before he takes the medicine.
The medicine can be kept in a fridge(冰箱).
Children aged five can’t take this medicine.
From this instruction we know Tom can go on using the medicine after Oct. 2006.

Wei Hua is a high school student and he is pretty(相当)healthy. He does exercise every day. He does it usually when he comes home after school. And his eating habits are pretty healthy. He tries to eat more vegetables, usually ten to eleven times a week. He eats fruit and drink milk every day. Of course, he loves junk food, too. But he tries to eat it only once a week. He usually keeps eight or nine hours sleep every day. So you see, he looks very healthy and happy. And his good lifestyle(生活方式) helps him become clever, too. Eating healthy food and doing exercise help him to study better.
How often does Wei Hua do exercise?

A.Once a week B.Three times a week
C.Seldom D.Every day

How often does he eat vegetables?

A.Once a week B.Ten to eleven times a week
C.Seldom D.Every day

Does Wei Hua like junk food?

A.Yes, he does. B.No, he doesn’t.
C.He likes it very much. D.He doesn’t like it at all.

How long does he sleep every day?

A.7-8 hours B.more than 10 hours
C.Less than 7 hours D.8 or 9 hours

What help him to study better?

A.Study hard
B.Eating healthy food and doing exercise
C.have a good sleep
D.Eating vegetables

Every girl dreams she could be the most beautiful in the world.
Rim Seong Wan is a 23-year-old girl now. She did some operations (手术) in 2009, and she looked different. Before the operations, she was shy because she thought she was not beautiful. After the operations, she had much bigger eyes and higher nose. When she talks with others, there is always a big smile on her face.
Rim has more clients (客户) than others. When she does the work, she’s much happier and can finish it more quickly. She’s called the most talented girl in the company (公司).Rim’s changes made her life better. However, the scientists didn’t think it was good to change life in this way. It’s more important to change (改变) our minds.
When did Rim Seong Wan do the operations?

A.When she was 13. B.When she was 17.
C.When she was 19. D.When she was 23.

Before the operations, she was shy because she thought _______.

A.she was tall.
B.she was beautiful.
C.she was not beautiful.
D.she had much bigger eyes and higher nose.

People in the company call Rim .

A.the most beautiful girl B.the most hard-working girl
C.the most talented girl D.the shyest girl

The scientists advise (建议) us to .

A.change our looks B.change our clothes
C.change our jobs D.change our minds

Little Tom likes cartoons very much. When the cartoons begin on TV, he does nothing before they’re over. Sometimes he’d rather(宁可)wait for a long time and go to bed late. In the morning his mother has to wake him up, or he’ll be late for school.
Yesterday Tom heard there would be an interesting cartoon today. This morning, after he got up, he turned on (打开) the television first, but he didn’t see the program on it. He had to have breakfast and then go to school. After school he ran home when his mother was cooking supper in the kitchen. He went into the sitting room quickly and turned on the television again, but he couldn’t find the cartoon. He walked into the kitchen and asked his mother for help. “It’s only five now,” said the woman, “Your program will be after supper.” Well, let’s have supper right now!”
Tom goes to bed late sometimes, so .

A.his mother has to wake him up
B.he goes to school by bus
C.he can wake himself up in the morning
D.he has to go to school without breakfast

, so he turned on the television after getting up this morning.

A.Tom thought he had some time left
B.Tom wanted to watch the interesting cartoon.
C.Tom wanted to know the important news
D.Tom hoped to watch a sports show

Tom was afraid , so he ran home.

A.he couldn’t watch the interesting cartoon
B.he couldn’t take the last bus
C.he would be hungry
D.he had little time to finish his homework

There are some programs on TV. Please read and answer the following questions.

Channel 1
Channel 2
18:00 Around China
18:30 Children’s programs
19:00 News
19:30 Weather report
19:40 Around the world
20:10 TV play: Sisters
21:00 Everyday English
21:15 Popular music
21:55 Talk show
17:45 Computers today
18:10 Foreign arts
18:30 English classroom
19:00 Animal world
19:25 China’s 99
20:20 Sports
21:00 TV play: What is love
21:45 English new
22:05 On TV next week

You like sports very much. You can watch TV at ________.

A.18:30 0n Channel 1 B.19:00 on Channel 2
C.19:40 on Channel 1 D.20:20 on Channel 2

If you want to learn arts about other countries, which program would be the best one?

A.Weather B.Around the world
C.Foreign arts D.Talk thow

When can you watch the TV play—Sisters?

A.At 20:10 B.At 21:00
C.At 21:15 D.At 22:05

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