题目内容
6.GPS,which means Global Positioning System,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 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(计算) 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.
41.According to the passage,with the help of the GPS,peopleA.
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
42.We can learn from the passage thatA.
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
43.The underlined word"They"in paragraph 3means"D".
A.Receivers B.GPS devices C.Satellites D.Ground stations
44.The passage is mainly aboutB.
A.the history of the GPS B.the introduction of the GPS
C.the shape of the GPS D.the three parts of the GPS
45.What can we infer(推断) from the passage?D
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.
分析 这篇短文介绍GPS定位系统.它可以在20米内搜寻到你的位置,非常方便.有些装置还置有电子地图,并预测了未来的定位系统将会非常普及.
解答 41.A 细节理解题.根据第一段It can find your position to within 20metres.A GPS cannot start your car,but at least you will know where you are.可知如果GPRS会告诉你位置,你就不会在新城市迷路,故选A.
42.A 细节理解题.根据There are three parts to the Global Positioning System可知GPRS有三部分,故选A.
43.D 细节理解题.根据前面两句The third part of the system is a network of ground stations.They are all over the world系统的第三部分是一个地面网络站,他们遍布世界各地,此处的they值得就是ground stations,故选D.
44.B 主旨大意题.根据文章内容可知主要介绍的就是可知GPS定位系统,故选B.
45.D 细节理解题.根据文章最后一句Everyone will have one and you will never be lost again.可知GPRS会在我们的生活中越来越普遍,故选D.
点评 做题时要在理解好文意的基础上,与题目有机的结合,从文章中找到相关细节性的句子与选项细细比对,进行选择或推理判断,选出符合文章内容的正确选项.做题注意灵活,有时可采用排除法或直选法确定出最终答案.
练习册系列答案
相关题目
16.My sister's birthday is next week.My mother plans a bicycle for her.( )
| A. | buy | B. | buys | C. | buying | D. | to buy |
16.-Dad,I can't stay with Leo any more.He is such a big mouth!
-_______ you are with him,_______ you will like him,dear.( )
-_______ you are with him,_______ you will like him,dear.( )
| A. | The more; the longer | B. | The better; the more | ||
| C. | The less; the better | D. | The longer; the better |