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Imagine the situation. You are driving along in a desert or on a mountain. You have no idea where you are. You passed the last house two hours ago. Then your car breaks down. It is night and it is cold. You have no mobile phone. What do you do? Well, next time take a GPS with you. This invention may be able to help you. It is a device(装置) which uses satellites to find the user’s position. It can find your position to within 20 meters. A GPS cannot start your car, but at least you will know where you are.
GPS, which means Global Positioning System(全球定位系统), is a small radio receiver. It looks like a mobile phone. You can hold it in your hand, or put in you pocket. It is sometimes put into a watch or a telephone. We also find GPS devices in cars, planes, or boats. Some of these devices have electronic maps, so you know where you are. For example, in a city they can tell you the name of the street.
There are three parts to the Global Positioning System. The first part is the receiver. You can hold it in your hand, or have it fixed into your car, plane, etc. the second part is a group of satellites orbiting the Earth. The receiver contacts at least four of the satellites and calculates its position. The third part of the system is a network of ground stations. They are all over the world. They control the satellites and make sure they are working well.
Some people think that in the future the GPS will be as common as the mobile. They are becoming cheaper and more and more accurate(精确的). There are also new uses for the GPS. Perhaps they will become like watches. Everyone will have one and you will never be lost again.GPS
According to the passage, with the help of the GPS, people _________.

A.can’t be lost in a new city
B.can’t find their way in different counties
C.can learn about the culture of an unknown place
D.can spend the least time getting to another place

We can learn from the passage that ___________.

A.there are three parts to the GPS
B.a GPS can’t be put into a watch
C.a GPS can help you start your car
D.the GPS are becoming more and more expensive

The underlined word “They” in paragraph 3 means “__________”.

A.Receivers B.GPS devices
C.Satellites D.Ground stations

The passage is mainly about ____________.

A.The history of the GPS B.the introduction of GPS
C.the shape of the GPS D.the three parts of the GPS

What can we infer(推断) from the passage?

A.All GPS devices have electronic maps.
B.People in many countries will use the GPS for free.
C.The receiver of the GPS contacts at least five of the satellites.
D.The GPS will become more and more common in everyday life.
科目 英语   题型 阅读理解   难度 中等
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相关试题

Mr. Smith is an English man. He teaches English well. His English classes are very interesting. He likes us and we like him, too.
Mr. Smith has two children---Tom and Lucy. Tom is seven and his sister Lucy is four. Tom goes to school but Lucy doesn't. Mr. Smith likes to wear a T-shirt and jeans. Football is his favourite sport. After school we often have a basketball match. Sometimes Mr. Smith watches and joins us. He plays basketball just(仅仅)for fun.
Mr. Smith is __________.

A.a Chinese teacher B.an English teacher
C.a Japanese (日本的) teacher D.an English dancer

Lucy doesn't go to school because(因为) __________.

A.she looks beautiful B.she is seven
C.she is only four D.she doesn't like school

How many sons does Mr.Smith have?

A.Only one. B.Two C.Three D.not any (没有)

__________ is Mr. Smith's favourite sport.

A.Basketball B.Football C.Running D.Tennis

The story(故事) is about _________.

A.Mr. Smith's son B.Mr. Smith
C.Tom and Lucy D.a basketball match

Many people like to watch TV. Watching TV is one of the most important activities of the day. TV brings the outside closer to people’s homes. Some people say the world is smaller than before because of TV.
What’s going on the other countries? How do people live in places far away? Is there a good sports game somewhere?
If you want to answer these and many other questions, just turn on the TV and watch it. You can see a lot and learn a lot. Of course, people can also learn through(通过) reading or listening to the radio. With TV, however, they can learn better and more easily. Why? Because they can hear and watch.
TV helps us a lot. TV often gives us new ideas. We learn newer and better ways of doing things.
Some people say the world is smaller than before because _____.

A.TV makes the earth smaller and smaller
B.all people like watching TV.
C.watching TV is one of the most important activities of the day
D.TV brings the outside world closer to people.

We can _____ when we watch TV.

A.go to live in the other countries
B.answer many questions
C.get a lot of information
D.ask TV some questions

People learn better through TV than through the radio because ______.

A.TV sets are bigger than radios
B.people can hear and they can watch, too
C.if people don’t have TV, they can not live happily.
D.it’s easier to turn on TV than to turn on the radio

TV can _____.

A.teach us a lot of things B.learn a lot of things
C.give us what we want D.help us do our homework

This article (文章) tells us _____.

A.it’s good to watch TV
B.not to watch TV any more
C.students should not watch TV at any time
D.to stop reading to watch TV

Mary is from the USA. She has two brothers. Now her family are in China. Her father, Mr Peterson, teaches English in Xihu Middle School. Her mother works in the same school. She teaches English, too. Mary goes to school in her father’s car with her mother every day.
Mary is a nice girl student. She can speak a little Chinese. She is very lovely, so she has many Chinese friends. She teaches them English, and they teach her Chinese. Her two brothers are twins. One is Bob, and the other is Bill. They look the same. They are only five. So their grandparents look after them at home. Mrs Peterson has many toys for the twin brothers. Bob likes to play with toy cars, but Bill likes to play with teddy bears. They are happy every day.
There are _______ people in Mary’s family.

A.two B.four C.six D.seven

Mr Peterson is a _______.

A.teacher B.worker C.officer D.doctor

Mary’s family name is _______.

A.Mary B.bob C.Bill D.Peterson

Mary _______.

A.can’t speak Chinese at all.
B.is very nice and lovely
C.can speak little English
D.goes to work in her father’s car.

Which of the following is NOT right?

A.Mary’s family is from America.
B.Mary’s parents are both teachers.
C.Mary has two twin sisters.
D.Mary’s grandparents are also in China.

In the morning, we went camping along a path in Green Natural Park. We were happy because it was a sunny day. We were expecting an enjoyable two-day holiday. On the way, we kept singing and making jokes.
However, in the afternoon, when we finished our picnic at one o’clock, it was dark and windy. Soon, there was a shower. Unluckily, none of us brought an umbrella. We ran around but we could find no place to hide in.
Twenty minutes passed and it was still raining. There were hours to go before we reached the campsite(野营地). It was even worse that our small compass(指南针) showed that we went to the wrong way. We had lost our way!
We had to make a quick decision as it was raining heavily. Chris said we could set up a tent to hide in, so Mary and Tom helped to set up the tent. Chris and I tried to make a fire to keep us warm. But we were unable to light the fire, as everything was wet. We dried ourselves, chatted and waited inside the tent. At about five o’clock, it stopped raining. We decided to give up the camping trip because all of us had been very tired.
This camping trip may not be very successful but we know each other better. And the most important thing I’ve learned from this trip is the importance of team spirit(精神).
It was even worse that they _______.

A.had no picnic
B.lost their way
C.couldn’t light the fire
D.couldn’t know each other

Chris suggested that they should _______ in the rain.

A.set up a tent
B.reach the campsite
C.keep singing
D.find a place to hide in

49.Which of the following is NOT true?

A.It was sunny in the morning.
B.None of them had an umbrella.
C.They gave up the camping trip at last.
D.They ran a round to dry themselves.

50.The writer has learned the importance of _______ from the trip.

A.making a decision B.working together
C.enjoying holidays D.taking a compass

Happiness is for everyone. You don ’t need to care about those people who have beautiful houses with large gardens and swimming pools or those who have nice cars and a lot of money. Why? Because those who have big houses may often feel lonely and those who have cars may want to walk on the country roads in their free time.
In fact, happiness is always around you if you put your heart into it. When you are in trouble at school, your friends will help you; when you study hard at your lessons, your parents are always taking good care of your life and your health; when you get success, your friends will say congratulations to you; when you do something wrong, people around you will help you to correct it. And when you do something good to others, you will feel happy, too. All those are your happiness. If you notice a bit of them, you can see that happiness is always around you.
Happiness is not the same as money. It is a feeling of your heart. When you are poor, you can also be very happy, because you have something else that can ’t be bought. When you meet with difficulties, you can say loudly you are very happy, because you have more chances to challenge(挑战) yourself. So you can ’t always say you are poor or you have bad luck. As the saying goes, life is like a revolving (旋转的) door. When it closes, it also opens. If you take every chance you get, you can be a happy and lucky person .
Those who have big houses may often feel _____.

A.happy B.lonely C.free D.excited

What will your friends say to you when you make great progress?

A.Oh, so do I. B.Congratulations.
C.Good luck. D.It ’s just so-so.

Which of the following is NOT true according to the passage?

A.People who have cars would never like to walk in the open air.
B.You can get help from others when you are in trouble.
C.You can still be a happy person even if you have little money.
D.Happiness is always around you though difficulties come towards you.

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