Question

【题目】 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

【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 counties

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 devices

C. Satellites D. Ground stations

【4】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

【5】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.

Answer 1

【答案】

【1】A

【2】A

【3】D

【4】B

【5】D

【解析】

试题分析：这篇短文主要介绍了GPS系统。GPS意思是全球定位系统，他看起来就像一个手机，人们可以把它装在口袋里，也可以装到汽车船舶上。这个装置通过卫星帮助使用者找到自己的位置。

【1】A 细节理解题。根据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.可知，故选A。

【2】A细节理解题。根据There are three parts to the Global Positioning System可知全球定位系统有三个部分，故选A。

【3】D细节理解题。根据The third part of the system is a network of ground stations. They are all over the world.可知后文中的they指代a network of ground stations故选D。

【4】B归纳理解题。根据短文主要介绍了GPS系统的功能，结构，故选B。

【5】D推理理解题。根据短文最后一段，可知GPS将会变的越来越普遍。故选D。