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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(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 (电子的)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(卫星) orbiting the Earth. The receiver contacts(联系) at least four of the satellites and calculates(计算) its position. The third part of the system is a network of ground stations. They are all over the world. They control (控制)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.
.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 较难
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相关试题

George,Frank,Peter,Betty和Susan正在各自打算去参观一座名塔。请仔细阅读题中的个人情况说明和A到E五座名塔的介绍,选出符合各人要求的最佳选项。
Susan is a college student. She is on holiday 'in July and would like to visit the tallest tower of the five below.
George, a student of history, is ready to write a paper on old towers. He is going to visit one in Europe.
Betty, a teacher from Australia, likes shopping very much. She is thinking of buying different things for her students.
Frank, from America, is traveling around the world. His last stop is to visit a tower where he can spend the night.
Peter is interested in plants and animals. He is now looking for a tower where he can see fish and other water animals.

阅读上面的短文,然后判断正(T)误(F)。
Jane,
After I left Paris I spent two days in New York City and one day in Washington DC. I got to Miami, Florida on Nov. 13. The weather is wonderful here. This morning I went swimming and then slept on the beach. When I woke up, I found Jennifer Lopez—my favorite movie star! She was just on my right! I asked her to take a picture with me. You know, that was my dream. She agreed! I’m going to show you the picture.
Yours,
John
Dear Dad,
I got here after 18 hours on a train at last! It’s very cold here in Moscow. It’s white everywhere. This afternoon I went to have a look at the city. I got lost. I was glad I took Russian lessons in my university. They helped me a lot. A young girl showed me the way back to my hotel. I think I can finish my work here and go back home soon. I’m longing for the warm sunshine at home. See you soon.
Max
Dear Amy,
I arrived in Guilin yesterday. What a beautiful place! The people are kind here and I have some new friends. Guess who I met here! Tom, my high school classmate. How small the world is! He is working here as an English teacher at a middle school. He showed me around the city. I also went to his school. I bought a special bag made in Guilin for you and a silk tablecloth for Mom. Tomorrow evening I’m going to fly to Beijing.
Love,
Mafia
Each of the three had a good time.
Maria went to see her classmate in Guilin.
It was warmer in Max’s hometown than in Moscow.
Max came from Russia.
John was very glad that his dream of going to the beach came true.

回答下列问题
Dear Donald,
Last summer I had a chance to visit the other side of the world. | went to Beijing with my friends. I visited the Great Wall and was deeply impressed by its length. I had never seen such a great wall before! Walking less than a mile on the wall made me very tired, but I was very excited. I used up three camera films in four hours.
Shopping was another interesting part of the trip. In the Silk Market, I bought a silk shirt for just a quarter of the price the trader asked for.
I have many memories and experiences to share. I am so lucky to have seen such a culture so different from my own. I will remember my trip to china forever!
Yours,
Jane
Who visited Beijing last summer?
How many camera films did Jane use up in four hours on the Great Wall?
Which was another interesting part of the trip?
Did Jane buy a silk shirt?
Why is Jane so lucky?

根据短文内容,选择正确答案
Many people like traveling during their vacation. They go to mountains, seaside, or forests. Some people like history so they like to visit old castles (城堡), museums and monuments (纪念, 碑). In many foreign countries, the travel agent (旅行社) can help you plan your holiday. You can tell the travel agent what kind of holiday you like, how much money you want to spend, and the travel agent will give you a lot of information about where to go, how to get there, where to stay, and what kind of activities you can do there. One of the holidays is called "package holiday". That is, you just pay the money, and the travel agent will plan everything for you, the ticket for the train or plane, the hotel, the activities, etc.
Package holiday means

A.you have a package with you when you travel
B.you can travel everywhere and stop where you want
C.you pay your money and you don’t have to think about anything at all
D.you travel with nothing

Some people like to visit old castles because they like

A.fresh air B.history C.camping D.traveling

can help you plan your holiday.

A.Your family B.Many people C.Nobody D.Travel agent

Package holiday is

A.cheap B.expensive C.boring D.easy

If you plan to go, on a package holiday, you should tell the travel agent

A.how much money you want to spend
B.how the weather is
C.what kind of holiday you like
D.both A and C

根据短文内容及首字母提示, 补全空格内单词,请写出完整单词。
Amanda is an American filmmaker and actress. She came to China three years ago to study Performance at Beijing Film Academy. Last month, she mto Japan to study Economics at the University of Tokyo. On June 10th, she rto the USA. She chatted with her parents about the cultural dbetween the two countries.
“The people in bcountries are very friendly to f. But they have different cultures. For example, when I spoke Chinese in China, the people there always showed s on their faces. But when I came to Japan, I found it was o. Most local people there hoped I could talk with them in Japanese, tI was not good at it,” she said.
Amanda thought this might have something to dwith the fact that the western group in Japan is othan the one in China. They have stayed in Japan for a long time. And most of them speak Japanese well. But Westerners in China are still quite a new group. They’re usually treated as guests and tourists.

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