2023年中考英語時事熱點閱讀專練 熱點13 中國北斗衛(wèi)星導航系統(tǒng)(學生版+解析版).docx

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1、2023年中考英語時事熱點閱讀專練 熱點13中國北斗衛(wèi)星導航系統(tǒng) 一、閱讀理解1 Atthemomentof9:43a.m.,onTuesday,June23rd,2020,attheXichangSatelliteLaunchCenter（衛(wèi)星發(fā)射中心）inSichuanProvince,thelastsatelliteofthethird-generationnetwork（第三代導航系統(tǒng)）wassentintospace.Itisthe55thmemberinthefamilyofBeiDou.ItbelongstoChina'sBeidouNavigationSatelliteS

2、ystem（BDS北斗衛(wèi)星導航系統(tǒng)）.Sofar,allthemembersofBeidou,59satellites,havebeenlaunchedintospace.WiththedevelopmentofChina,wehavealreadyownedthreeotherfamoussatellitelaunchcenters一Jiuquan,TaiyuanandWenchang. Now,thesatelliteworkswellwithotherBeidousatellitestogether.Sofar,Chinahascompletedthethird-generationn

3、etworkofChina'sBDS.Itwasanewmilestoneinthenation'sspaceresearchwork.Thelaunchshowedthatourcountryhascompletedourlargestspace-basedsystem.It'soneoffourinternationalnet-works,includingtheUnitedStates'GPS,Russian'sGLONASSandtheEuropeanUnion'sGalileo. BDShasbeenwidelyusedaspublicresourcesinourdailylife

4、.Ithasbeensharedbythewholeworld.Itwillprovidemoreservicesaroundtheworld.BDSisthecommonwealthofthedevelopmentofhumanbeings. 1. WheredidChinalaunchthelastsatelliteofthethird-generationnetwork? A. Xichang.B.Jiuquan.C.Wenchang. 2. HowmanymembersarethereinthefamilyofBeidou? A. 5.B.55.C.59. 3. Whatdo

5、estheunderlinedword“milestone”meaninChinese? A. 起點B.里程碑C.事業(yè)GLONASSbelongsto. A.ChinaB.RussiaC.theUnitedStatesAccordingtothepassage,wecanknowthat. A. BDShasbeensharedonlybyChineseThelastsatelliteofBDSwaslaunchedat9:43p.m.,June23rd,2020 B. Sofar,Chinahascompletedthethird-generationnetworkofChina's

6、BDS towithinafewmeters,BDSreducestheerrortocentimeters.Thishigh-precisionserviceis52.(use)forlandsurveying,mapping,agricultureandautomateddriving. ChinaiswillingtoshareBDSwiththeworld.AccordingtoRan,BDSproductshavebeenexportedtomorethan120countriesandregions."TheBeidousystemwillalwaysadheretothede

7、velopmentconceptof'China'sBeidou,theworld'sBeidou,andthefirst-classBeidou',servingtheworldandbenefitingmankind,”Rantoldreportersafterthelatestlaunch. Headdedthatfutureplanscallforasmarterand53.(accessible)systemwithBeidouatitscore,tocomeonlineby2035. Bythen,wecanprobablysaythatRomehasfinallybeenbu

8、ilt. 2023年中考英語時事熱點閱讀專練 熱點13中國北斗衛(wèi)星導航系統(tǒng) 一、閱讀理解1 Atthemomentof9:43a.m.,onTuesday,June23rd,2020,attheXichangSatelliteLaunchCenter（衛(wèi)星發(fā)射中心）inSichuanProvince,thelastsatelliteofthethird-generationnetwork（第三代導航系統(tǒng)）wassentintospace.Itisthe55thmemberinthefamilyofBeiDou.ItbelongstoChina'sBeidouNavigationSate

9、lliteSystem（BDS北斗衛(wèi)星導航系統(tǒng)）.Sofar,allthemembersofBeidou,59satellites,havebeenlaunchedintospace.WiththedevelopmentofChina,wehavealreadyownedthreeotherfamoussatellitelaunchcenters一Jiuquan,TaiyuanandWenchang. Now,thesatelliteworkswellwithotherBeidousatellitestogether.Sofar,Chinahascompletedthethird-gener

10、ationnetworkofChina'sBDS.Itwasanewmilestoneinthenation'sspaceresearchwork.Thelaunchshowedthatourcountryhascompletedourlargestspace-basedsystem.It'soneoffourinternationalnet-works,includingtheUnitedStates'GPS,Russian'sGLONASSandtheEuropeanUnion'sGalileo. BDShasbeenwidelyusedaspublicresourcesinourdai

11、lylife.Ithasbeensharedbythewholeworld.Itwillprovidemoreservicesaroundtheworld.BDSisthecommonwealthofthedevelopmentofhumanbeings. 1. WheredidChinalaunchthelastsatelliteofthethird-generationnetwork? A. Xichang.B.Jiuquan.C.Wenchang. 2. HowmanymembersarethereinthefamilyofBeidou? A. 5.B.55.C.59. 3.

12、Whatdoestheunderlinedword“milestone”meaninChinese? A. 起點B.里程碑C.事業(yè)GLONASSbelongsto. A.ChinaB.RussiaC.theUnitedStatesAccordingtothepassage,wecanknowthat. A. BDShasbeensharedonlybyChineseThelastsatelliteofBDSwaslaunchedat9:43p.m.,June23rd,2020 B. Sofar,Chinahascompletedthethird-generationnetworkofC

13、hina'sBDS 【答案】1.A2.B3.B4.B5.C 【解析】本文介紹了中國第三代北斗衛(wèi)星導航系統(tǒng)的發(fā)射情況，以及中國北斗衛(wèi)星導航系統(tǒng)的發(fā)展過程。 1. 細節(jié)理解題。根據(jù)第一段第一句'Atthemomentof9:43a.m.,onTuesday,June23rd,2020,attheXichangSatelliteLaunchCenter（衛(wèi)星發(fā)射中心）inSichuanProvince,thelastsatelliteofthethird-generationnetwork（第三代導航系統(tǒng)）wassentintospace.”可知，中國第三代衛(wèi)星網(wǎng)絡的最后一顆衛(wèi)星在四川省西昌衛(wèi)

14、星發(fā)射中心發(fā)射升空。故選A。 2. 細節(jié)理解題。根據(jù)第一段第二句"Itisthe55thmemberinthefamilyofBeiDou.^可知，它是北斗大家庭的第55個成員。由此說明北斗系統(tǒng)有55顆衛(wèi)星。故選B。 3. 詞義猜測題。根據(jù)下文“Thelaunchshowedthatourcounttyhascompletedourlargestspace-basedsystem.”可知，這次發(fā)射表明我國已經(jīng)完成了我國最大的太空系統(tǒng)。由此推測此處表明這是研究太空工作的一個新的里程碑，符合語境。milestone指代里程碑。故選B。 4. 細節(jié)理解題。根據(jù)第二段最后一句Tt'soneoff

15、ourinternationalnet-works,includingtheUnitedStates9GPS,Russian'sGLONASSandtheEuropeanUnion'sGalileo.”可知，GLONASS是俄羅斯的。故選Bo細節(jié)理解題。根據(jù)第二段第二句“Sofar,Chinahascompletedthethird-generationnetworkofChina'sBDS."可知，目前，中國已建成北斗系統(tǒng)第三代網(wǎng)絡。故選C。 2 ChinabuildsBeidou OnMay17,2019ChinalaunchedanewsatelliteattheXichangSa

16、telliteLaunchCenter（西昌衛(wèi)星發(fā)射中wastheforty-fifthBeidousatellitethatChinahadsentintospace. SowhatisBeidou? Beidouispositioningsystem（定位系統(tǒng)）.ItisdevelopedbyChina.Chinaisthethirdcountryintheworldtohaveitsownpositioningsystem.WithBeidou,Chinanolongerhastodependonforeignsystems.Thisisveryimportantfornationa

17、lsafety. WorkonBeidoubeganin1994.However,thefirsttwoBeidousatellites,werenotsentintospaceuntil2000.Sincethen,ChinahaslauncheddozensofBeidousatellites.Thesesatelliteshaveformedaglobalnetwork.Now,Chinaisfurtherimprovingthesystem.Itplanstolaunch（發(fā)身寸）tenmoreBeidousatellites.Ifitgoeswell,Beidouwillbecom

18、pletedbefore2020. ThecompleteBeidouwillbemorepowerfulthananyexisting（現(xiàn)存白勺）positioningsystemallovertheworld.YangChangfengisadesignerofBeidou.Hesaysthesystemcannoticethesway（搖擺）ofabuildinginstrongwinds. Beidouhasboughtmanyadvantagestoourlives.InShanghai,thousandsofbuseshavebeenusingBeidou.Whenwearew

19、aitingforabus,wecanknowwhenitisabouttocome. ManysmartphoneshavealsobeenusingBeidou,"Manypeoplesay,letmeturnonmyGPS.Infact,theirphonesareusingBeidou,"jokesasalespersoninBeijing. 5. Accordingtothearticle,howmanycountrieshaddevelopedtheirownpositioningsystemsbeforeChina? A. Two.B.Three.C.Forty-fiveD

20、.Forty-four. 6. WhendidChinasendthefirsttwoBeidousatellitesintospace? A. In1994.B.In2000.C.In2008.D.In2018. 7. Whatcanwelearnfromthelastparagraph? A. Beidouisverypowerful.B.ManypeoplehavebeenusingBeidou. C.GPScanbemorepowerfulthanBeidou.D.FewsmartphoneshavebeenusingBeidou. 8. Whichofthefollowi

21、ngistrue? A. TheBeidousystemhasalreadybeencompletedsinceMay17,2019. B. Chinadidn'thavetodependonforeignpositioningsystemsbefore. C. TheCompletedBeidousystemwillhave45satellitesinall. D. Beidouwillbethemostpowerfulpositioningsystemintheworld. 【答案】6.A7.B8.B9.D 【解析】本文主要講述了北斗導航系統(tǒng)一一我國自行研制的衛(wèi)星導航系統(tǒng)。該系

22、統(tǒng)于1994年開始研發(fā)，到目前為止，已成為我國最優(yōu)秀的衛(wèi)星導航系統(tǒng)。這從根本上改變了我國對國外衛(wèi)星導航系統(tǒng)的依賴。 4. 細節(jié)理解題。根據(jù)第三段中的“Chinaisthethirdcountryintheworldtohaveitsownpositioningsystem.”可知，中國是世界上第三個擁有自己的定位系統(tǒng)的國家，也就是說在中國之前擁有定位系統(tǒng)的國家有兩個。故選Ao細節(jié)理解題。根據(jù)第四段中的“However,thefirsttwoBeidousatellites,werenotsentintospaceuntil2000."可知，直到2000年，中國才首次將兩枚“北斗”衛(wèi)星發(fā)射進入

23、太空。故選B。 5. 段落大意題。根據(jù)最后一段中的"Manysmartphoneshave...jokesasalespersoninBeijing."可知，人們常說的打開GPS,可能就是在使用“北斗”衛(wèi)星導航的功能。故選B。 6. 細節(jié)理解題。根據(jù)第四段中“Ifitgoeswell,Beidouwillbecompletedbefore2020.”可知，如果進展順利，北斗將在2020年前建成，但是沒有確切的日期，故A錯誤；根據(jù)第三段中“WithBeidou,Chinanolongerhasto dependonforeignsystems.”可知，沒有北斗之前，中國一直是依賴國外的定位

24、系統(tǒng)，故B項錯誤；根據(jù)第四段中Ttplanstolaunch（發(fā)射）tenmoreBeidousatellites."可知，完整的北斗導航系統(tǒng)不止45顆衛(wèi)星，故C項錯誤；根據(jù)第五段中"ThecompleteBeidouwillbemorepowerfulthananyexisting（現(xiàn)存的）positioningsystemallovertheworld?9可知，完整的北斗導航系統(tǒng)是最好的定位系統(tǒng)，故選D。 3 Whenyouwanttogosomewhere,youcaneasilyfindyourwaybyusingamapapponyoursmartphone.Yoursmartp

25、hone"knows"whereyouareandcantellyouwheretogo. Thisispossiblewiththehelpofsatellitenavigation（satnav）systems.Asatnavsystemusesgroupsofsatellitestofindoutwherepeopleare.Itsendsinformationtoareceiver,suchasasmartphone.Themoresatellitesasystemhas,themoreaccurate（精確的）itis. OnJune23,thelastsatelliteofCh

26、ina'sBeidouNavigationSatelliteSystemwaslaunchedintospace.Beidou,China'sownsatnavsystemwasfinallycompleted.Itisoneoffourglobalnavigationsystems,alongwithUS'GPS,Russia'sGLONASSandtheEuropeanUnion'sGalileo. OnJuly31,Beidoustartedprovidingfull-scaleglobalservices.Morethan120countriesandregionsarenowusi

27、ngBeidouservices. Since2000,Chinahaslaunched59Beidousatellites.Beidoucanbeusedinareasthatincludefarming,publicservicesandbusiness.Ithasapositioning（定位）accuracyofunder10meters.Thissummer,peoplealongtheYangtzeRiverusedBeidou-baseddevicetomonitorfloodwatersinreal-timewithanaccuracyofjustafewcentimeter

28、s. 7. Beidouistheglobalnavigationsystem. A. firstB.secondC.thirdD.fourthWhichofthefllowingisTRUEaboutBeidou? A. ItonlyworksinChina. C.ItstartedworkingonJune23. 12. Whatdoesasatnavsystemdo? A.Ithelpspeopleplantrips. C.Itletspeoplesendtextnavigate. 13. Whatcanwelearnfromthepassage? A.Beidouca

29、nbeusedinmanyareas. B. Itsnewestsatellitesaremoreaccurate. D. Itwillhavemoresatellitesinthefuture. B. Ithelpspeopleshoponline. D. Itmakespeople'sphonessmarter. B. BeidoucanmonitoreverythingonEarth. C. There9re60BeidousatellitesaboveEarthBeidouwillreplacemobilephonenetworks. 【答案】10.D11.B12.C

30、13.A 【解析】本文是一篇說明文，主要講了衛(wèi)星導航系統(tǒng)，并著重介紹了中國的北斗衛(wèi)星導航系統(tǒng)。 9. 細節(jié)理解題。根據(jù)"Itisoneoffourglobalnavigationsystems,alongwithUS'GPS,Russia'sGLONASSandtheEuropeanUnion'sGalileo”可知，它是第四個全球?qū)Ш较到y(tǒng)，故選D。 10. 推理判斷題。根據(jù)最后一段的介紹Tthasapositioning（定位）accuracyofunder10meters.Thissummer,peoplealongtheYangtzeRiverusedBeidou-baseddev

31、icetomonitorfloodwatersinreal-timewithanaccuracyofjustafewcentimeters.”可知，最新的衛(wèi)星越來越精確了，故選Bo細節(jié)理解題。根據(jù)"Yoursmartphone"knows”whereyouareandcantellyouwheretogo"及"Thisispossiblewiththehelpofsatellitenavigation（satnav）systems”可知，衛(wèi)星導航系統(tǒng)可以幫助人們導航，故選C。 11. 推理判斷題。根據(jù)"Beidoucanbeusedinareasthatincludefarming,publ

32、icservicesandbusiness,,可知，北斗可以被用于許多領域，故選A。 4 Manyyearsago,peoplereliedonthesun,themoonandstarstofindtheirwayaround.Later,thecompass（指南針）wasintroduced.Andnow,wehavesatnav（衛(wèi)星導航）systemstoguideus.Asatnavsystemusesgroupsofsatellitestoshowtheuser'slocation.Theysendinformationtoareceiver,suchasasmartphon

33、e,toshowuswhereweare. TheearliestbuiltsatnavsystemistheGlobalPositioningSystem,whichbelongstotheUS.ThenthereisRussia'sGlobalNavigation（導航）SatelliteSystem,theEuropeanUnion'sGalileoandChina'sownsatellitenavigationsystem,BeiDou. OnOctober14,2017,anARJ21-700plane,whichwasthefirstdomestically-producedj

34、et（國產(chǎn)噴氣式飛機）equippedwiththeBeiDounavigationsystem,successfullycompletedatestflight.TheresultsshowedtheperformanceofthesystemdevelopedbyChinamatchesthatofsimilarsystemsproducedaboard,accordingtotheCommercialAircraftCorporationofChina. Sinceitsintroductionin2000,theBeidounavigationsystemhasseenincreas

35、ingnumbersofapplicationslinkedtoeverydaylife,fromsharedbikestofarming. Whenitcomestosharedbikes,smartlocksthatsupportBeiDouchipsoffermoreaccuratepositioningthanothers,makingiteasiertofindabike. FarmerscanuseBeiDou-enabledtractorstoplow（犁）thesoilanduseunmannedaircraftwithBeiDoutosowseeds,whichcanim

36、proveefficiencyandmakebetteruseofresources.BeiDou'sfarmingapplicationshavespreadfromHeilongjiangprovincetoBeijing,Liaoning,Shanxi,HubeiandotherregionsacrossChina. Withitsmanyuses,theBeidounavigationsystemisevenplayingabigroleintheBeltandRoadInitiative（一帶一路）.“Todate,theBeiDousystemhascoveredmostpart

37、softheAsia-Pacificregion（地區(qū)），aswellascountriesalongtheSilkRoadEconomicBeltandthe21stCenturyMaritimeSilkRoad”saidYangChangfeng,ChiefdesigneroftheBeiDousystem. Today,therearemorethan20BeiDousatellitesaboveourheads,andChinaplanstolaunchevenmorethisyeartoexpandtheBeiDounetworktobetterservetheBeltandRoa

38、dInitiative. "AsBeiDouexpandsitsoverseasreach,itwillbeincreasinglypopularinthelogistics（物流）industry,”saidMiaoQianjun,secretary-generalofthenavigationservicesassociation."Ships,forexample,canuseittopositionthemselveswhilesailingacrossoceanstoEuropeancountries,nolongerlimitedtoSoutheastAsianregionsin

39、thenearfuture."Whatisthepurposeofthefirsttwoparagraphs? A. Tocomparesomemodernsatnavsystems. B. Todescribethebenefitsofsatnavsystems. C. Totellushowsatnavsystemswerecreated. D. Tointroducesomesatnavsystemsandhowtheywork. 12. WhatcanweknowabouttheBeiDounavigationsystemaccordingtothearticle? A.

40、Itwasusedsuccessfullyinanewjetplane. B. Itismorepowerfulthanothersatnavsystems. C. ItwasintroducedintoChinaonOctober14,2017. D. Itwasn'tusedinoureverydaylifeuntilrecently. 13. Accordingtothearticle,theBeiDounavigationsystemisalreadywidelyusedfor. A. plowingthesoilandsowingseedsimprovingtheeffic

41、iencyofnetworks B. producingmoresmartlocksforsharedbikesnavigatingshipsacrossoceanstoEuropeancountries 14. WhatisMiaoQianjun'sattitudetowardthefutureoftheBeiDousystem? A. worriedB.uncertainC.positiveD.doubtfulWheredoesthepassageprobablycomefrom? A. Agovernmentreport.B.Asciencemagazine. C. Astor

42、ybook.D.Asciencefiction. 【答案】14.D15.A16.A17.C18.B 【解析】這篇文章介紹了中國的衛(wèi)星導航系統(tǒng)一一北斗衛(wèi)星系統(tǒng)。文章介紹了北斗衛(wèi)星在生活中起到的重要作用。 14. 段落大意題。根據(jù)Andnow,wehavesatnav（衛(wèi)星導航）systemstoguideus.現(xiàn)在我們有了自己的衛(wèi)星導航，Asatnavsystemusesgroupsofsatellitestoshowtheuser'slocation.衛(wèi)星導航來展示使用者的位置，TheearliestbuiltsatnavsystemistheGlobalPositioningSyste

43、m,whichbelongstotheUS.最早的的衛(wèi)星導航是屬于美國GPS,ThenthereisRussia'sGlobalNavigation（導航）SatelliteSystem,然后俄羅斯有了全球衛(wèi)星導航，theEuropeanUnion'sGalileoandChina'sownsatellitenavigationsystem,BeiDou.歐洲的伽利略聯(lián)盟和中國的北斗；可知前兩段的主要目的是介紹一些衛(wèi)星導航系統(tǒng)和他們的功能；故選D。 15. 細節(jié)理解題。根據(jù)OnOctober14,2017,anARJ21-700plane,whichwasthefirstdomestical

44、ly-producedjet（國產(chǎn)噴氣式飛機）equippedwiththeBeiDounavigationsystem,successfullycompletedatestflight在2017年十月14日，國產(chǎn)第一個裝有北斗衛(wèi)星導航的噴氣式飛機ARJ21-700成功完成了試飛；故選A。 16. 細節(jié)理解題。根據(jù)FarmerscanuseBeiDou-enabledtractorstoplow（犁）thesoilanduseunmannedaircraftwithBeiDoutosowseeds農(nóng)民能使用北斗導航拖拉機犁地，用帶有北斗導航的無人機播種；故選A。 17. 觀點態(tài)度題。根據(jù)i

45、twillbeincreasinglypopularinthelogistics（物流）industry它會在物流產(chǎn)業(yè)也來越受歡迎，Ships,forexample,canuseittopositionthemselveswhilesailingacrossoceanstoEuropeancountries,nolongerlimitedtoSoutheastAsianregionsinthenearfuture.在不久的將來輪船穿越海洋到歐洲國家時，能確定自己的位置，不再限制于東南亞地區(qū)；可推測他對北斗系統(tǒng)的前景非常樂觀；故選C。 18. 推理判斷題。根據(jù)文章介紹了中國的衛(wèi)星導航系統(tǒng)——北

46、斗衛(wèi)星系統(tǒng)，可推測文章可能來自一本科學雜志；Agovernmentreport一個政府報告；Asciencemagazine一本科學雜志；Astorybook一本故事書；Asciencefiction一本科幻小說；故選Bo5 Howdopeoplefindtheirways?Atfirst,peoplediditbylookingatthesun,themoonandstars.Later,westartedtousethecompass^旨南針）.Today,therearenavigationsatellitesystems（衛(wèi)星導航系統(tǒng)）. Anavigationsatellites

47、ystemusesgroupsofsatellites（衛(wèi)星），theysendinformationtoareceiver,suchasyoursmartphone.Thentheycanfindwhereyouare. TheearliestnavigationsystemistheGlobalPositioningSystem（GPS）（全球定位系統(tǒng)）oftheUnitedStates.TheUShasput24satellitesintospacetomakesureGPScanlocateapersoncorrectlyandglobally.Russia'sGLONASSandE

48、uropeanUnion*sGalileocanalsoworkglobally. TheBeiDouNavigationSatelliteSystem（BDS）isChina'shomegrownnavigationsystem.Itwassetupin2000.OnJune23rd2020,thelastsatelliteofChina'sBeidouNavigationSatellitesystemwassentintospace.Beidou,China'sownnavigationsystem,wasfinallycompleted.OnJuly31,Beidoustartedpr

49、ovidingfull-scaleglobalservices（全面的全球服務）.Morethan120countriesandregions（地區(qū)）arenowusingBeidouservices.Since2000,Chinahassent55Beidousatellites. BeiDoucanfindyouwhereveryouare.Ithelpsyougofasterbyfindingshortcutsandusingcorrectdirections.Whenyouareintroubleandcallthepolice,theywillknowexactlywhereyou

50、areifyouhaveasmartphonethatusesBeiDou. BeiDoualsohasauniquemessagingability.Itallowspeopletosendtextmessagesupto1,200Chinesewordswhenmobilephoneservicesareinterrupted（中斷）becauseofsomereasons. 19. Howdidpeoplefindtheirwaysatfirstaccordingtothispassage? A. Bylookingatthesun,themoonandstars. B. Byu

51、singthenavigationsatellitesystems. C. Bylookingatthecompass. 20. Whatdoesanavigationsystemsdo? A. Ithelpspeopleplantrips. B. Ithelpspeoplefindwheretheyare. C. ItletspeoplesendtextmessagesHowmanynavigationsatellitesystemsarementionedinthepassage? A.TwoB.ThreeC.FourWhatdoestheunderlinedword"loca

52、te"inthethirdparagraphmean? A.位于B.設置C.定位WhatdoyouknowabouttheBeiDousystem? A.ItwassetupbeforeGPS. B. BeiDousystemswerecompletedinJune. C. OnlyChinacanuseBeiDousystemservices. 【答案】19.A20.B21.C22.C23.B 【解析】本文介紹了衛(wèi)星導航系統(tǒng)的發(fā)展進程以及中國自主研發(fā)的導航系統(tǒng)一一北斗衛(wèi)星導航系統(tǒng)。 15. 細節(jié)理解題。根據(jù)"Atfirst,peoplediditbylookingatthesu

53、n,themoonandstars^,可知，起初人們通過看太陽，月亮和星星尋找方向，故選A。 16. 細節(jié)理解題。根據(jù)"Thentheycanfindwhereyouare99,可知，衛(wèi)星導航系統(tǒng)幫助人們找到他們在哪里，故選Bo細節(jié)理解題。根據(jù)“TheearliestnavigationsystemistheGlobalPositioningSystem(GPS)(全球定位系統(tǒng))oftheUnitedStates""Russia'sGLONASSandEuropeanUnion*sGalileocanalsoworkglobally,^及"TheBeiDouNavigationSatelli

54、teSystem(BDS)isChina%homegrownnavigationsystem,^,可知，本文共提到了四個衛(wèi)星定位系統(tǒng),故選C。 17. 詞義猜測題。根據(jù)“TheUShasput24satellitesintospacetomakesureGPScanlocateapersoncorrectlyandglobal!/\可知，美國向太空發(fā)射了24顆衛(wèi)星，以確保全球定位系統(tǒng)能夠在全球范圍內(nèi)準確定位一個人，所以locate表示“定位”，故選Co細節(jié)理解題。根據(jù)"OnJune23rd2020,thelastsatelliteofChina'sBeidouNavigationSatell

55、itesystemwassentintospace.Beidou,China'sownnavigationsystems,wasfinallycomplete,^,可矢口，2020年6月北斗衛(wèi)星定位系統(tǒng)最終完成，故選B。 6 ThelaunchofBeiDouNavigationSatelliteSystem(北斗衛(wèi)星導航系統(tǒng))onJune23rd2020marksthecompletionofChina'sself-developedandoperatedBeiDounetwork,oneofthefourglobalnavigationnetworks,alongwiththeUSA'

56、sGPS,Russia'sGLONASSandtheEuropeanUnion'sGalileo.Italsomarkstheendofthecountry'sdependenceonAmericaforanimportantservice:locationdata. GPSwastheearliestnetworktoprovidegloballocationdata.ThesystemisownedbyAmerica'sgovernment,whichmeansAmericanofficialscoulddecidetoturnoffordowngradethesignalscoming

57、fromGPSsatellites.ThemainpurposeofbuildingBDSistogiveChinafullcontroloveranavigationsystem. WorkonBDSbeganinthe1990sandincludedthreephases.ThefirstphasewasaboutbuildingtheBeiDou-1system,whichstartedin1994andin2000providedpositioning,shortmessagetelecommunicationandtimingservicesinChina.Thesecondpha

58、se-theBeiDou-2system,whichstartedin2004,wascompletedin2012.TheChinabuildsBeidou OnMay17,2019ChinalaunchedanewsatelliteattheXichangSatelliteLaunchCenter（西昌衛(wèi)星發(fā)射中心、）.Itwastheforty-fifthBeidousatellitethatChinahadsentintospace. SowhatisBeidou? Beidouispositioningsystem（定位系統(tǒng)）.ItisdevelopedbyChina.Chin

59、aisthethirdcountryintheworldtohaveitsownpositioningsystem.WithBeidou,Chinanolongerhastodependonforeignsystems.Thisisveryimportantfornationalsafety. WorkonBeidoubeganin1994.However,thefirsttwoBeidousatellites,werenotsentintospaceuntil2000.Sincethen,ChinahaslauncheddozensofBeidousatellites.Thesesatel

60、liteshaveformedaglobalnetwork.Now,Chinaisfurtherimprovingthesystem.Itplanstolaunch（發(fā)射）tenmoreBeidousatellites.Ifitgoeswell,Beidouwillbecompletedbefore2020. ThecompleteBeidouwillbemorepowerfulthananyexisting（現(xiàn)存白勺）positioningsystemallovertheworld.YangChangfengisadesignerofBeidou.Hesaysthesystemcannot

61、icethesway（搖擺）ofabuildinginstrongwinds. Beidouhasboughtmanyadvantagestoourlives.InShanghai,thousandsofbuseshavebeenusingBeidou.Whenwearewaitingforabus,wecanknowwhenitisabouttocome. ManysmartphoneshavealsobeenusingBeidou,“Manypeoplesay,letmeturnonmyGPS.Infact,theirphonesareusingBeidou,"jokesasalesp

62、ersoninBeijing. 4. Accordingtothearticle,howmanycountrieshaddevelopedtheirownpositioningsystemsbeforeChina? A.Two.B.Three.C.Forty-fiveD.Forty-four. 5. WhendidChinasendthefirsttwoBeidousatellitesintospace? A.In1994.B.In2000.C.In2008.D.In2018. 6. Whatcanwelearnfromthelastparagraph? A.Beidouisver

63、ypowerful.B.ManypeoplehavebeenusingBeidou. C. GPScanbemorepowerfulthanBeidou.D.FewsmartphoneshavebeenusingBeidou. 7. Whichofthefollowingistrue? A. TheBeidousystemhasalreadybeencompletedsinceMay17,2019. B. Chinadidn'thavetodependonforeignpositioningsystemsbefore. BeiDou-2groundsystemnotonlyserve

64、sChinabutalsoprovidesusersintheAsia-Pacificregionwithmorethantensatellitesandofferedservicesabove.ThethirdphaseinvolvedthedevelopmentoftheBeiDou-3system,whichstartedin2009andwascompletedinJune,2020.AsoneoftheIGEmembers,ChinaisalwayscooperatingwithforeigncountriesanduseBDStoserveglobaluserswithhighpe

65、rformanceandhighqualityinscientificresearch. BeiDou'ssatellitesaremoreadvancedthanthoseofGPS.IntheAsia-Pacificregion,BeiDouclaimsa10-cmaccuracy,comparedwith30cmpositioningwithoutdoingwrongofferedbyGPS.Americabeganupgradingitssystemin1997butitmaytakeanother15yearstofinishtheproject. 18. Whichofthef

66、ollowingnameisdifferentfromtheotherthreeaccordingtothepassage? A.BDS.B.GPS.C.Galileo.D.Russia. 19. WhafstheimportanceofthesuccessfullaunchofBDS? A. ItmeansBDSwillbetheearliestnetworktoprovidegloballocationdata. B. ItmeansBDSwillbethefourthnetworktoprovidegloballocationdata. C. ItmeansChinacanfullytakechargeofaglobalnavigationsatellitesystem. D. ItmeanswecanstopAmericanofficialsfromturningoffthesatellitessignals. 20. WhatdoesParagraph3mainlytalkabout? A.IttalksaboutthreephasesofworkonBDS.