话题10 北斗导航卫星系统

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1、2020-2021学年高二期末复习热点话题阅读与题型专练 10话题:北斗导航卫星系统【1】阅读下面短文，在空白处填入1 个适当的单词或括号内单词的正确形式。Up to now, 55 BeiDou satellites (send) up , meaning the completion of Chinas self-developed BeiDou Navigation(导航)Satellite System (BDS). BDS appears later 2. Americas GPS, Russias GLONASS and EUs Galileo, but it can match

2、them. As one of the fourth 3 . (globe) navigation satellite systems, BDS involves efforts of over 400 agencies and 300,000 research personnel and technicians.Originally 4. (plan) in the 1980s, the network represents a milestone in Chinas space effort. BDS is comparable to GPS in terms of the 二_ (acc

3、urate) of positioning. It also offers short message communication and thus can provide emergency communications in areas 6 . conventional communication signals are poor in an effort 7 . (improve) the quality of their positioning services, Apple and Samsung phones, among others, are already using BDS

4、s signals, and so8. (be) every Chinese brand.The construction of complete BDS is a huge technical achievement for China and can 9 . (easy) pay 10. in the near future. Meanwhile, BDSs great contribution to promoting the worlds economic and social development as well as the peaceful use of space has a

5、ttracted the worlds attention.【2】阅读选择In the distant past, our ancestors relied on stars to guide them on a clear night. Today, we have navigational(导航的)systems to help us find our way, the latest of which is the Beidou Navigation Satellite System (BDS).The BDS is entirely built by Chinese engineers.

6、 With the launch of the last satellite from the Xichang Satellite Launch Center on June 23, the global network of 59 satellites has been completed. On July 31,Beidou started providing services covering our whole planet.Its difficult to imagine the grea t influence those satellites have on our daily

7、lives. When you unlock one of Hellobikes bicycles, you are using the BDS. “The intelligent lock on each bike receives Beidou satellite signals and sends positioning information to the data center which will help collect big data on the bikes and predict users riding needs in advance according to the

8、 data,” Chu Yiqun, a manager of Hellobike mentioned. Users can also find shared bikes more accurately（精确地）thanks to Beidous global positioning accuracy of 2.34 meters.Beidou adopts a unique two-way communication system, including its ability to receive messages sent by people from areas with poor co

9、mmunication signals. Obviously this function isnt designed for users to chat online. Instead, it plays a role when disasters occur and communications are blocked.After the Wenchuan Earthquake in 2008, all ground-based communication facilities were interrupted. Though the first generation of Beidou c

10、ould only send 120 characters in a single message at that time, communication between affected areas and rescue（救援）centers was successful. Now, Beidous messaging ability has been increased to 1, 200 Chinese characters in a single message. It is widely used in disaster alarms, automatic identificatio

11、n and information release.As Sun Jiadong, former chief designer of the BDS said: “The application（应用）of Beidou is only limited by imagination.11What can we learn about the BDS from the passage?AIt was developed by Chinese and American engineers.BIt works better on clear nights.CIts last satellite wa

12、s launched on July 31.DIts able to provide global coverage for navigation.12Why does the author mention Hellobike in Paragraph 3?ATo stress the excellent positioning ability of the BDS.BTo show how the BDS makes peoples daily lives easier.CTo present the advantages and disadvantages of the BDS.DTo e

13、xplain how the BDS works.13What is Beidous two-way communication system designed for?ATo help people when communication signals are poor.BTo make users dailycommunication more fun.CTo allow users to chat online more freely.DTo collect data from users for the data center.14What does the underlined se

14、ntence in the last paragraph mean?ABeidou may be more helpful than we know.BBeidou inspires users imagination.CBeidou needs to be further improved.DBeidou is limited in application.参考答案1have been sent2than3global4planned5accuracy6where7to improve8is9easily10off【分析】本文是一篇新闻报道。文章主要介绍了中国自主研发的北斗导航卫星系统。1考

15、查现在完成时的被动语态。句意：直到2020年 6月23日，已经发射了55颗北斗卫星，意味着中 国自主研发的北斗导航卫星系统已经完成。本句描述过去发生的事情对现在的影响用现在完成时， 55 BeiDou satellites 与 send 是被动关系，用被动语态，故填 have been sent。2考查介词。句意：北斗导航卫星系统比美国的“全球定位系统”、俄罗斯的“GLONASS”和欧洲的“伽 利略”出现的晚一些。根据形容词比较级later可知，此处应填“比”，故填than。.3考查形容词。句意：作为全球第四大导航卫星系统，北斗导航卫星系统中包含超过400家机构、300000 个研究者和技术人

16、员的努力。根据句子结构可知，此处应填形容词，修饰名词短语navigation satellite systems，故填 global。4考查过去分词。句意：这个网络的计划起始于20 世纪 80年代，它代表着中国空间站努力的里程碑。根据句子结构可知，空格处是句子的状语，the network与plan是动宾关系，表示被动，所以用过去 分词作状语。故填 planned。5考查名词。句意：在定位的精确性方面，北斗导航卫星系统可以与全球定位系统相比。作n terms of 的宾语用名词，根据句意故填“精确”，不可数名词，故填 accuracy。6考查定语从句。句意：它也能提供短信通讯。这样就可以为通讯

17、信号差的地方提供紧急通讯。根据句意及句子结构可知，此处引导定语从句，先行词是areas，在从句中作地点状语，故填where。7考查非谓语动词。句意：为了改善定位服务的质量，苹果手机、三星手机准备使用北斗导航卫星系统的信号。in an effort to do sth.意为“努力做某事，为了做某事”，故填to improve。8考查时态和主谓一致。句意：每个中国的品牌也是如此。陈述的是客观事实，用一般现在时，此处使用的是倒装句式“so+be+主语”，表示： 也是，主语every Chinese brand是单数名词，故填is。.9考查副词。句意：建设完北斗导航卫星系统对中国来说，是技术上的巨大成

18、就，它在不远的将来可 以容易地实现。修饰谓语动词用副词，故填easily o ，10考查介词。句意：建设完北斗导航卫星系统对中国来说，是技术上的巨大成就，它在不远的将来可 以容易地实现。pay off是一个固定短语，意为：付清，取得成功。故填off。11D12B 13A14A【分析】本文是说明文。文章介绍了北斗导航卫星系统在我们生活中的应用。11细节理解题。文章第二段中提到the global network of 59 satellites has been completed. On July 31, Beidou started providing services covering o

19、ur whole planet. ”北斗系统的全球 59 颗卫星网络已经完成， 北斗系统开始提供覆盖全球的服务。由此可知，北斗系统能够提供全球范围的导航服务。故选D。12推理判断题。文章第三段中提到Its difficult to imagine the great influence those satellites have on our daily lives.（很难想象这些卫星对我们日常生活的巨大影响）”；下文举出Hellobike的例子，When you unlock one of Hellobikes bicycles, you are using the BDS.（当你解锁一辆

20、Hellobike 自行车时，你 就使用了北斗系统）”和Users can also find shared bikes more accurately（精确地）thanks to Beidous global positioning accuracy of 2.34 meters. 由于北斗全球卫星定位精度可达到2.34 米，用户还可以更 准确地找到共享自行车）”。由此可知，作者是以Hellobike为例说明北斗系统对人们日常生活的影 响，以及如何让人们的日常生活更轻松。故选B。13细节理解题。根据第四段中Beidou adopts a unique two-way communicatio

21、n system, including its ability to receive messages sent by people from areas with poor communication signals. 北斗系统采用独特的双 向通信系统，能够接收来自通信信号较差地区的人们发送的信息）”和it plays a role when disasters occur and communications are blocked. （当灾难发生、通讯中断时，它就会发挥作用） ”可知，北斗 双向通信系统是为了在通讯信号不好或者信号中断时帮助人们。故选A。14词句猜测题。最后一段中前首席设计师孙家栋说The application of Beidou is only limited by imagination.（北斗的应用只受到想象力的限制）”，意即北斗系统还有更多的其他的应用，是人们还 没有想象到的。北斗系统对我们的帮助可能比我们能想到的更多。故选A。