Question

Imagine the situation. You are driving in a village or on a mountain. You have no idea where you are. You passed the last house two hours ago. Then your car doesn’t work. 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 used for finding your position(位置) with the help of satellites (衛(wèi)星). A GPS can’t start your car, but at least you will know where you are.

? GPS, which means Global Positioning System(全球定位系統(tǒng)), is a small radio receiver. It looks like a mobile phone. You can hold it in your hand, or put in your pocket. It is sometimes put into a watch or a telephone. We also find a GPS in cars, planes, or boats. Some of them 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 GPS. 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 going around the Earth. The receiver communicates with at least four of the satellites and calculates its position. The third part of the system is a network of ground stations 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 better and cheaper. 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.

1.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 countries

C. can learn about the culture of an unknown place

D. can spend the least time getting to another place

2.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

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

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

4.What can we infer(推斷) 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 communicates with at least five of the satellites.

D. The GPS will become more and more common in everyday life.

 

Answer 1

【答案】

1.A

2.A

3.D

4.D

【解析】

試題分析：這是一篇富有科學(xué)的短文。短文介紹了一種高科技產(chǎn)品----全球定位系統(tǒng)。全球定位系統(tǒng)由三個部分組成-----接收器、衛(wèi)星群、網(wǎng)絡(luò)。它能正確確定你所在的位置，讓你不再迷路。她已經(jīng)廣泛應(yīng)用于汽車、飛機、輪船等交通工具，將來它還會像手機一樣普及在日常生活中。

1.細(xì)節(jié)理解題。短文最后說到：Everyone will have one and you will never be lost again.每個人都會有一個全球定位系統(tǒng)，這樣你再也不會迷路了。故選A。

2.細(xì)節(jié)理解題。短文第二段說：There are three parts to GPS.全球定位系統(tǒng)有三個部分。所以應(yīng)該選A。

3.細(xì)節(jié)理解題。這個題目要結(jié)合上文理解，短文說：The third part of the system is a network of ground stations all over the world. They control (控制) the satellites and make sure they are working well.第三部分是全世界的地面基站網(wǎng)絡(luò)，他們控制著衛(wèi)星確保衛(wèi)星正常運轉(zhuǎn)。所以這里的they是指地面基站網(wǎng)絡(luò)。故選D。

4.細(xì)節(jié)理解題。從短文最后一段可以看出全球定位系統(tǒng)將會廣泛應(yīng)用于日常生活中。Some people think that in the future the GPS will be as common as the mobile.人們認(rèn)為將來全球定位系統(tǒng)會像手機一樣普遍。Perhaps they will become like watches.也許他們會像手表。所以選D。

考點：科普環(huán)保類閱讀。