2023年中考英语时事热点阅读 热点13 中国北斗卫星导航系统(学生版+解析版)

2023年中考英语时事热点阅读专练

热点13中国北斗卫星导航系统

一、阅读理解

1

Atthemomentof9:43a.m.,onTuesday,June23rd,2020,attheXichangSatelliteLaunchCenter（卫星发射

中jf?）inSichuanProvince,thelastsatelliteofthethird-generationnetwork（第三代导航系统）wassentintospace.

Itisthe55thmemberinthefamilyofBeiDou.ItbelongstoChina'sBeidouNavigationSatelliteSystem（BDS北

斗卫星导航系统）.Sofar,allthemembersofBeidou,59satellites,havebeenlaunchedintospace.Withthe

developmentofChina,wehavealreadyownedthreeotherfamoussatellitelaunchcenters—Jiuquan,Taiyuanand

Wenchang.

Now,thesatelliteworkswellwithotherBeidousatellitestogether.Sofar,Chinahascompletedthe

third-generationnetworkofChina'sBDS.Itwasanewmilestoneinthenation'sspaceresearchwork.Thelaunch

showedthatourcountryhascompletedourlargestspace-basedsystem.It'soneoffourinternationalnet-works,

includingtheUnitedStates'GPS,Russian'sGLONASSandtheEuropeanUnion'sGalileo.

BDShasbeenwidelyusedaspublicresourcesinourdailylife.Ithasbeensharedbythewholeworld.Itwill

providemoreservicesaroundtheworld.BDSisthecommonwealthofthedevelopmentofhumanbeings.

1.WheredidChinalaunchthelastsatelliteofthethird-generationnetwork?

A.Xichang.B.Jiuquan.C.Wenchang.

2.HowmanymembersarethereinthefamilyofBeidou?

A.5.B.55.C.59.

3.Whatdoestheunderlinedword“milestone“meaninChinese?

A.起点B.里程碑C.事业

4.GLONASSbelongsto.

A.ChinaB.RussiaC.theUnitedStates

5.Accordingtothepassage,wecanknowthat.

A.BDShasbeensharedonlybyChinese

B.ThelastsatelliteofBDSwaslaunchedat9:43p.m.,June23rd,2020

C.Sofar,Chinahascompletedthethird-generationnetworkofChina'sBDS

2

ChinabuildsBeidou

OnMay17,2019ChinalaunchedanewsatelliteattheXichangSatelliteLaunchCenter（西昌卫星发射中

wastheforty-fifthBeidousatellitethatChinahadsentintospace.

SowhatisBeidou?

Beidouispositioningsystem（定位系统）.ItisdevelopedbyChina.Chinaisthethirdcountryintheworldto

haveitsownpositioningsystem.WithBeidou,Chinanolongerhastodependonforeignsystems.Thisisvery

importantfornationalsafety.

WorkonBeidoubeganin1994.However,thefirsttwoBeidousatellites,werenotsentintospaceuntil2000.

Sincethen,ChinahaslauncheddozensofBeidousatellites.Thesesatelliteshaveformedaglobalnetwork.Now,

Chinaisfurtherimprovingthesystem.Itplanstolaunch（发射）tenmoreBeidousatellites.Ifitgoeswell,Beidou

willbecompletedbefore2020.

ThecompleteBeidouwillbemorepowerfulthananyexisting（现存的）positioningsystemallovertheworld.

YangChangfengisadesignerofBeidou.Hesaysthesystemcannoticethesway（摇摆）ofabuildinginstrong

winds.

Beidouhasboughtmanyadvantagestoourlives.InShanghai,thousandsofbuseshavebeenusingBeidou.

Whenwearewaitingforabus,wecanknowwhenitisabouttocome.

ManysmartphoneshavealsobeenusingBeidou,“Manypeoplesay,letmeturnonmyGPS.Infact,their

phonesareusingBeidou,jokesasalespersoninBeijing.

6.Accordingtothearticle,howmanycountrieshaddevelopedtheirownpositioningsystemsbeforeChina?

A.Two.B.Three.C.Forty-fiveD.Forty-four.

7.WhendidChinasendthefirsttwoBeidousatellitesintospace?

A.In1994.B.In2000.C.In2008.D.In2018.

8.Whatcanwelearnfromthelastparagraph?

A.Beidouisverypowerful.B.ManypeoplehavebeenusingBeidou.

C.GPScanbemorepowerfulthanBeidou.D.FewsmartphoneshavebeenusingBeidou.

9.Whichofthefollowingistrue?

A.TheBeidousystemhasalreadybeencompletedsinceMay17,2019.

B.Chinadidn'thavetodependonforeignpositioningsystemsbefore.

C.TheCompletedBeidousystemwillhave45satellitesinall.

D.Beidouwillbethemostpowerfulpositioningsystemintheworld.

3

Whenyouwanttogosomewhere,youcaneasilyfindyourwaybyusingamapapponyoursmartphone.Your

smartphone“knows"whereyouareandcantellyouwheretogo.

Thisispossiblewiththehelpofsatellitenavigation（satnav）systems.Asatnavsystemusesgroupsofsatellites

tofindoutwherepeopleare.Itsendsinformationtoareceiver,suchasasmartphone.Themoresatellitesasystem

has,themoreaccurate（精确的）itis.

OnJune23,thelastsatelliteofChina'sBeidouNavigationSatelliteSystemwaslaunchedintospace.Beidou,

China'sownsatnavsystemwasfinallycompleted.Itisoneoffourglobalnavigationsystems,alongwithUS'GPS,

Russia'sGLONASSandtheEuropeanUnion'sGalileo.

OnJuly31,Beidoustartedprovidingfull-scaleglobalservices.Morethan120countriesandregionsarenow

usingBeidouservices.

Since2000,Chinahaslaunched59Beidousatellites.Beidoucanbeusedinareasthatincludefarming,public

servicesandbusiness.Ithasapositioning（定位）accuracyofunder10meters.Thissummer,peoplealongthe

YangtzeRiverusedBeidou-baseddevicetomonitorfloodwatersinreal-timewithanaccuracyofjustafew

centimeters.

10.Beidouistheglobalnavigationsystem.

A.firstB.secondC.thirdD.fourth

11.WhichofthefllowingisTRUEaboutBeidou?

A.ItonlyworksinChina.B.Itsnewestsatellitesaremoreaccurate.

C.ItstartedworkingonJune23.D.Itwillhavemoresatellitesinthefuture.

12.Whatdoesasatnavsystemdo?

A.Ithelpspeopleplantrips.B.Ithelpspeopleshoponline.

C.Itletspeoplesendtextnavigate.D.Itmakespeople'sphonessmarter.

13.Whatcanwelearnfromthepassage?

A.Beidoucanbeusedinmanyareas.

B.BeidoucanmonitoreverythingonEarth.

C.There5re60BeidousatellitesaboveEarth

D.Beidouwillreplacemobilephonenetworks.

4

Manyyearsago,peoplereliedonthesun,themoonandstarstofindtheirwayaround.Later,thecompass（指

南针）wasintroduced.Andnow,wehavesatnav（卫星导航）systemstoguideus.Asatnavsystemusesgroupsof

satellitestoshowtheuser'slocation.Theysendinformationtoareceiver,suchasasmartphone,toshowuswhere

weare.

TheearliestbuiltsatnavsystemistheGlobalPositioningSystem,whichbelongstotheUS.Thenthereis

Russia'sGlobalNavigation（导航）SatelliteSystem,theEuropeanUnion'sGalileoandChina'sownsatellite

navigationsystem,BeiDou.

OnOctober14,2017,anARJ21-700plane,whichwasthefirstdomestically-producedjet（国产喷气式飞机）

equippedwiththeBeiDounavigationsystem,successfullycompletedatestflight.Theresultsshowedthe

performanceofthesystemdevelopedbyChinamatchesthatofsimilarsystemsproducedaboard,accordingtothe

CommercialAircraftCorporationofChina.

Sinceitsintroductionin2000,theBeidounavigationsystemhasseenincreasingnumbersofapplications

linkedtoeverydaylife,fromsharedbikestofarming.

Whenitcomestosharedbikes,smartlocksthatsupportBeiDouchipsoffermoreaccuratepositioningthan

others,makingiteasiertofindabike.

FarmerscanuseBeiDou-enabledtractorstoplow（犁）thesoilanduseunmannedaircraftwithBeiDoutosow

seeds,whichcanimproveefficiencyandmakebetteruseofresources.BciDou'sfarmingapplicationshavespread

fromHeilongjiangprovincetoBeijing,Liaoning,Shanxi,HubeiandotherregionsacrossChina.

Withitsmanyuses,theBeidounavigationsystemisevenplayingabigroleintheBeltandRoadInitiative（一

带一路）.“Todate,theBeiDousystemhascoveredmostpartsoftheAsia-Pacificregion（地区），aswellas

countriesalongtheSilkRoadEconomicBeltandthe21slCenturyMaritimeSilkRoad^^saidYangChangfeng,Chief

designeroftheBeiDousystem.

Today,therearemorethan20BeiDousatellitesaboveourheads,andChinaplanstolaunchevenmorethis

yeartoexpandtheBeiDounetworktobetterservetheBeltandRoadInitiative.

“AsBeiDouexpandsitsoverseasreach,itwillbeincreasinglypopularinthelogistics（物流）industry,said

MiaoQianjun,secretary-generalofthenavigationservicesassociation."Ships,forexample,canuseittoposition

themselveswhilesailingacrossoceanstoEuropeancountries,nolongerlimitedtoSoutheastAsianregionsinthe

nearfuture.”

14.Whatisthepurposeofthefirsttwoparagraphs?

A.Tocomparesomemodemsatnavsystems.

B.Todescribethebenefitsofsatnavsystems.

C.Totellushowsatnavsystemswerecreated.

D.TDintroducesomesatnavsystemsandhowtheywork.

15.WhatcanweknowabouttheBeiDounavigationsystemaccordingtothearticle?

A.Itwasusedsuccessfullyinanewjetplane.

B.Itismorepowerfulthanothersatnavsystems.

C.ItwasintroducedintoChinaonOctober14,2017.

D.Itwasn'tusedinoureverydaylifeuntilrecently.

16.Accordingtothearticle,theBeiDounavigationsystemisalreadywidelyusedfor.

A.plowingthesoilandsowingseeds

B.improvingtheefficiencyofnetworks

C.producingmoresmartlocksforsharedbikes

D.navigatingshipsacrossoceanstoEuropeancountries

17.WhatisMiaoQianjun'sattitudetowardthefutureoftheBeiDousystem?

A.worriedB.uncertainC.positiveD.doubtful

18.Wheredoesthepassageprobablycomefrom?

A.Agovernmentreport.B.Asciencemagazine.

C.Astorybook.D.Asciencefiction.

5

Howdopeoplefindtheirways?Atfirst,peoplediditbylookingatthesun,themoonandstars.Later,we

startedtousethecompass（指南针）.Today,therearenavigationsatellitesystems（卫星导航系统）.

Anavigationsatellitesystemusesgroupsofsatellites（卫星），theysendinformationtoareceiver,suchasyour

smartphone.Thentheycanfindwhereyouare.

TheearliestnavigationsystemistheGlobalPositioningSystem（GPS）（全球定位系统）oftheUnitedStates.

TheUShasput24satellitesintospacetomakesureGPScanlocateapersoncorrectlyandglobally.Russia's

GLONASSandEuropeanUnion'sGalileocanalsoworkglobally.

TheBeiDouNavigationSatelliteSystem（BDS）isChina'shomegrownnavigationsystem.Itwassetupin

2000.OnJune23rd2020,thelastsatelliteofChina'sBeidouNavigationSatellitesystemwassentintospace.

Beidou,China'sownnavigationsystem,wasfinallycompleted.OnJuly31,Beidoustartedprovidingfull-scale

globalservices（全面的全球服务）.Morethan120countriesandregions（地区）arenowusingBeidouservices.

Since2000,Chinahassent55Beidousatellites.

BeiDoucanfindyouwhereveryouare.Ithelpsyougofasterbyfindingshortcutsandusingcorrectdirections.

Whenyouareintroubleandcallthepolice,theywillknowexactlywhereyouareifyouhaveasmartphonethat

usesBeiDou.

BeiDoualsohasauniquemessagingability.Itallowspeopletosendtextmessagesupto1,200Chinesewords

whenmobilephoneservicesareinterrupted（中断）becauseofsomereasons.

19.Howdidpeoplefindtheirwaysatfirstaccordingtothispassage?

A.Bylookingatthesun,themoonandstars.

B.Byusingthenavigationsatellitesystems.

C.Bylookingatthecompass.

20.Whatdoesanavigationsystemsdo?

A.Ithelpspeopleplantrips.

B.Ithelpspeoplefindwheretheyare.

C.Itletspeoplesendtextmessages

21.Howmanynavigationsatellitesystemsarementionedinthepassage?

A.TwoB.ThreeC.Four

22.Whatdoestheunderlinedword"locate"inthethirdparagraphmean?

A.位于B.设置C.定位

23.WhatdoyouknowabouttheBeiDousystem?

A.ItwassetupbeforeGPS.

B.BeiDousystemswerecompletedinJune.

C.OnlyChinacanuseBeiDousystemservices.

6

ThelaunchofBeiDouNavigationSatelliteSystem（北斗卫星导航系统）onJune23rd2020marksthe

completionofChina'sself-developedandoperatedBeiDounetwork,oneofthefourglobalnavigationnetworks,

alongwiththeUSA'sGPS,Russia'sGLONASSandtheEuropeanUnion'sGalileo.Italsomarkstheendofthe

country'sdependenceonAmericaforanimportantservice:locationdata.

GPSwastheearliestnetworktoprovidegloballocationdata.ThesystemisownedbyAmerica'sgovernment,

whichmeansAmericanofficialscoulddecidetoturnoffordowngradethesignalscomingfromGPSsatellites.The

mainpurposeofbuildingBDSistogiveChinafullcontroloveranavigationsystem.

WorkonBDSbeganinthe1990sandincludedthreephases.ThefirstphasewasaboutbuildingtheBeiDou-1

system,whichstartedin1994andin2000providedpositioning,shortmessagetelecommunicationandtiming

servicesinChina.Thesecondphase-theBeiDou-2system,whichstartedin2004,wascompletedin2012.The

BeiDou-2groundsystemnotonlyservesChinabutalsoprovidesusersintheAsia-Pacificregionwithmorethan

tensatellitesandofferedservicesabove.ThethirdphaseinvolvedthedevelopmentoftheBeiDou-3system,which

startedin2009andwascompletedinJune,2020.AsoneoftheIGEmembers,Chinaisalwayscooperatingwith

foreigncountriesanduseBDStoserveglobaluserswithhighperformanceandhighqualityinscientificresearch.

BeiDou'ssatellitesaremoreadvancedthanthoseofGPS.IntheAsia-Pacificregion,BeiDouclaimsa10-cm

accuracy,comparedwith30cmpositioningwithoutdoingwrongofferedbyGPS.Americabeganupgradingits

systemin1997butitmaytakeanother15yearstofinishtheproject.

24.Whichofthefollowingnameisdifferentfromtheotherthreeaccordingtothepassage?

A.BDS.B.GPS.C.Galileo.D.Russia.

25.What'stheimportanceofthesuccessfullaunchofBDS?

A.ItmeansBDSwillbetheearliestnetworktoprovidegloballocationdata.

B.ItmeansBDSwillbethefourthnetworktoprovidegloballocationdata.

C.ItmeansChinacanfullytakechargeofaglobalnavigationsatellitesystem.

D.ItmeanswecanstopAmericanofficialsfromturningoffthesatellitessignals.

26.WhatdoesParagraph3mainlytalkabout?

A.IttalksaboutthreephasesofworkonBDS.B.Ittellsusthefirstphasewasprettygood.

C.Itsuggestsmorethantensatelliteshelp.D.Itmainlyintroducesascientificresearch.

27.Whatdoestheunderlinedword“accuracy"meaninthelastparagraph?

A.Correcttiming.B.Correctpositioning.C.Wrongmessages.D.Rightorders.

28.Whatcanweinferfromthepassage?

A.ThecompletionofBeiDounetworkputsChinaaheadtechnologically.

B.ItmaytaketheUSAmorethan30yearstocompletetheupgradeofGPS.

C.America'sGPSismoreadvancedthanBeiDouintheAsia-Pacificregion.

D.TherewillbemorecountriesdependingonBeiDousysteminthefuture.

二、完型填空

Mostpeoplehavemapappsontheirphonesthatcanshowtheirlocationsandguidethemtowheretheywant

togo.Buthowdotheseappsystemsknowyour29atanytimeorplace?Theyfindyoubyusingsatellite

navigation（satnav）systems（卫星导航系统）.

Asatnavsystemusesgroupsofsatellitestofindtheuserslocations.Thislocationinformationisthensenttoa

30,suchasasmartphone.

ThefirstsatnavsystemistheGlobalPositioningSystem（GPS）（全球定位系统），whichbelongstotheUnited

States.Thesystemistheworld's31satnavsystem.ButChina'ssatellitesareimportant32

improvingthesatnavsystem.Beidou,hasovertake（超过）GPSinsize,Japan'sNikkeiAsianReviewreported.

China33Beidou'sfirstnavigationsatelliteintospacein2000.Chinaalsobecamethe34

countrytobuildasatnavsystemaftertheUnitedStatesandRussia,People'sDailyreported.Over3035in

AfricaandtheMiddleEastare36Beidousystemrightnow.

Withitsworld-leadingtechnology,BeidouisleadingChinesepeopletoabetterlife37playing

important38indifferentareas,accordingtoXinhuaNews.

Forexample,over6.2millionvehiclesinChinaareusingBeidoufornavigation^accordingtoareportonthe

Beidousystem'sconstruction建造）anddevelopment.

Atthenewly-builtBeijingDaxingInternationalAirport,Beidouhasbeenusedtokeeptrackof（追踪）loading

andunloadingvehicles39andoutdoors.Whenthe40opens,eachbaggagecarthasBeidou

navigationequipmenttohelppassengersgettheirluggage41

Forasatnavsystem,the42ofsatellitesisimportantforimprovingthesystem'spositioning

accuracy（定位精度）.Themoresatellites,the43accuratethepositioningis.Thesatellitenavigationsystem

isusefulinmanyways.

29.A.locationsB.systemsC.technologyD.numbers

30.A.placeB.receiverC.citizenD.country

31.A.famousB.carefulC.importantD.leading

32.A.withB.ofC.toD.for

33.A.supportedB.providedC.sentD.held

34.A.firstB.secondC.thirdD.fourth

35.A.roadsB.citiesC.countriesD.provinces

36.A.usingB.sellingC.makingD.showing

37.A.inB.onC.toD.by

38.A.gamesB.placesC.rolesD.parts

39.A.insideB.indoorsC.outsideD.outlooks

40.A.supermarketB.airportC.schoolD.shop

41.A.fasterB.slowerC.biggerD.smaller

42.A.timeB.placeC.qualityD.number

43.A.oneB.everyC.moreD.less

三、短文填空

TwomoreBeidousatellitesaresentintoorbitonDec16,2019.

Romewasn'tbuiltinaday.

NearlytwodecadeshavepassedsinceChinalaunchedthefirstBeidousatellitein2000.Inthattime,more

Beidousatellites44.(send)intoorbit,formingtheBeidouNavigationSatelliteSystem.Inlate2012,it45.(begin)

providingpositioning,navigation,timingandmessagingservicestopeopleinChinaandotherpartsofthe

Asia-Pacificregion.

46.theendof2018,BDSstarted47.(provide)globalservices."ThismarksBeidou'sentryintoa'global

era'48.(from)its"regionalera',"BDSSpokespersonRanChengqisaidatanewsconference.

NowwithtwomoreBeidousatelliteslaunchedonDec16,2019,BDShas53satellitesinorbit-morethanUS

government\GlobalPositioningSystem(GPS),whichhas31activesatellites.Thatlaunchmeansthecoreof

Beidou'sthird-generationnetworkisnowinplace.It'sexpectedto49.(great)improvethesystem'sabilityto

serveusersworldwide.

Althoughasatellite-basednavigationsystemneedsonly24satellitestorunproperly,having53allowsfor

bettercoverage.

Thisishowitworks:AsignalreceiveronEarth-yoursmartphone,forexample-measuresits50.(distant)

fromatleastthreesatellitesby51.(record)theamountoftimeittakestoreceivetheirsignals.Thenitcancalculate

itslocation.Withsomanysatellites,BDScanprovideamoreaccuratecalculation.WhileGPScalculateslocations

towithinafewmeters,BDSreducestheerrortocentimeters.Thishigh-precisionserviceis52.(use)fbrland

surveying,mapping,agricultureandautomateddriving.

ChinaiswillingtoshareBDSwiththeworld.AccordingtoRan,BDSproductshavebeenexportedtomore

than120countriesandregions."TheBeidousystemwillalwaysadheretothedevelopmentconceptof'China's

Beidou,theworld'sBeidou,andthefirst-classBeidou9,servingtheworldandbenefitingmankind,“Rantold

reportersafterthelatestlaunch.

Headdedthatfutureplanscallforasmarterand53.(accessible)systemwithBeidouatitscore,tocome

onlineby2035.

Bythen,wecanprobablysaythatRomehasfinallybeenbuilt.

2023年中考英语时事热点阅读专练

热点13中国北斗卫星导航系统

一、阅读理解

1

Atthemomentof9:43a.m.,onTuesday,June23rd,2020,attheXichangSatelliteLaunchCenter（卫星发射

中jf?）inSichuanProvince,thelastsatelliteofthethird-generationnetwork（第三代导航系统）wassentintospace.

Itisthe55thmemberinthefamilyofBeiDou.ItbelongstoChina'sBeidouNavigationSatelliteSystem（BDS北

斗卫星导航系统）.Sofar,allthemembersofBeidou,59satellites,havebeenlaunchedintospace.Withthe

developmentofChina,wehavealreadyownedthreeotherfamoussatellitelaunchcenters—Jiuquan,Taiyuanand

Wenchang.

Now,thesatelliteworkswellwithotherBeidousatellitestogether.Sofar,Chinahascompletedthe

third-generationnetworkofChina'sBDS.Itwasanewmilestoneinthenation'sspaceresearchwork.Thelaunch

showedthatourcountryhascompletedourlargestspace-basedsystem.It'soneoffourinternationalnet-works,

includingtheUnitedStates'GPS,Russian'sGLONASSandtheEuropeanUnion'sGalileo.

BDShasbeenwidelyusedaspublicresourcesinourdailylife.Ithasbeensharedbythewholeworld.Itwill

providemoreservicesaroundtheworld.BDSisthecommonwealthofthedevelopmentofhumanbeings.

1.WheredidChinalaunchthelastsatelliteofthethird-generationnetwork?

A.Xichang.B.Jiuquan.C.Wenchang.

2.HowmanymembersarethereinthefamilyofBeidou?

A.5.B.55.C.59.

3.Whatdoestheunderlinedword“milestone"meaninChinese?

A.起点B.里程碑C.事业

4.GLONASSbelongsto.

A.ChinaB.RussiaC.theUnitedStates

5.Accordingtothepassage,wecanknowthat.

A.BDShasbeensharedonlybyChinese

B.ThelastsatelliteofBDSwaslaunchedat9:43p.m.,June23rd,2020

C.Sofar,Chinahascompletedthethird-generationnetworkofChina'sBDS

【答案】1.A2.B3.B4.B5.C

【解析】本文介绍了中国第三代北斗卫星导航系统的发射情况，以及中国北斗卫星导航系统的发展过程。

1.细节理解题。根据第一段第一句"Atthemomentof9:43a.m.,onTuesday,June23rd,2020,attheXichang

SatelliteLaunchCenter（卫星发射中心）inSichuanProvince,thelastsatelliteofthethird-generationnetwork（第

三代导航系统）wassentintospace.”可知，中国第三代卫星网络的最后一颗卫星在四川省西昌卫星发射中心

发射升空。故选A。

2.细节理解题。根据第一段第二句"Itisthe55thmemberinthefamilyofBeiDou”可知，它是北斗大家庭的第

55个成员。由此说明北斗系统有55颗卫星。故选B“

3.词义猜测题。根据下文“Thelaunchshowedthatourcountryhascompletedourlargestspace-basedsystem.,,nJ

知，这次发射表明我国已经完成了我国最大的太空系统。由此推测此处表明这是研究太空工作的一个新的

里程碑，符合语境。milestone指代里程碑。故选B。

4.细节理解题。根据第二段最后一句"It'soneoffourinternationalnet-works,includingtheUnitedStates9GPS,

Russian'sGLONASSandtheEuropeanUnion'sGalileo.”可知，GLONASS是俄罗斯的。故选Bo

5.细节理解题。根据第二段第二句"Sofar,Chinahascompletedthethird-generationnetworkofChina'sBDS.”

可知，目前，中国已建成北斗系统第三代网络。故选C。

2

ChinabuildsBeidou

OnMay17,2019ChinalaunchedanewsatelliteattheXichangSatelliteLaunchCenter（西昌卫星发射中

心、）.Itwastheforty-fifthBeidousatellitethatChinahadsentintospace.

SowhatisBeidou?

Beidouispositioningsystem（定位系统）.ItisdevelopedbyChina.Chinaisthethirdcountryintheworldto

haveitsownpositioningsystem.WithBeidou,Chinanolongerhastodependonforeignsystems.Thisisvery

importantfornationalsafety.

WorkonBeidoubeganin1994.However,thefirsttwoBeidousatellites,werenotsentintospaceuntil2000.

Sincethen,ChinahaslauncheddozensofBeidousatellites.Thesesatelliteshaveformedaglobalnetwork.Now,

Chinaisfurtherimprovingthesystem.Itplanstolaunch（发射）tenmoreBeidousatellites.Ifitgoeswell,Beidou

willbecompletedbefore2020.

ThecompleteBeidouwillbemorepowerfulthananyexisting（现存的）positioningsystemallovertheworld.

YangChangfengisadesignerofBeidou.Hesaysthesystemcannoticethesway（摇摆）ofabuildinginstrong

winds.

Beidouhasboughtmanyadvantagestoourlives.InShanghai,thousandsofbuseshavebeenusingBeidou.

Whenwearewaitingforabus,wecanknowwhenitisabouttocome.

ManysmartphoneshavealsobeenusingBeidou,44Manypeoplesay,letmeturnonmyGPS.Infact,their

phonesareusingBeidou,jokesasalespersoninBeijing.

6.Accordingtothearticle,howmanycountrieshaddevelopedtheirownpositioningsystemsbeforeChina?

A.Two.B.Three.C.Forty-fiveD.Forty-four.

7.WhendidChinasendthefirsttwoBeidousatellitesintospace?

A.In1994.B.In2000.C.In2008.D.In2018.

8.Whatcanwelearnfromthelastparagraph?

A.Beidouisverypowerful.B.ManypeoplehavebeenusingBeidou.

C.GPScanbemorepowerfulthanBeidou.D.FewsmartphoneshavebeenusingBeidou.

9.Whichofthefollowingistrue?

A.TheBeidousystemhasalreadybeencompletedsinceMay17,2019.

B.Chinadidn'thavetodependonforeignpositioningsystemsbefore.

C.TheCompletedBeidousystemwillhave45satellitesinall.

D.Beidouwillbethemostpowerfulpositioningsystemintheworld.

【答案】6.A7.B8.B9.D

【解析】本文主要讲述了北斗导航系统——我国自行研制的卫星导航系统。该系统于1994年开始研发，到

目前为止，已成为我国最优秀的卫星导航系统。这从根本上改变了我国对国外卫星导航系统的依赖。

6.细节理解题。根据第三段中的“Chinaisthethirdcountryintheworldtohaveitsownpositioningsystem."可

知，中国是世界上第三个拥有自己的定位系统的国家，也就是说在中国之前拥有定位系统的国家有两个。

故选A。

7.细节理解题。根据第四段中的“However,thefirsttwoBeidousatellites,werenotsentintospaceuntil2000."

可知，直到2000年，中国才首次将两枚“北斗”卫星发射进入太空。故选B。

8.段落大意题。根据最后-一段中的“Manysmartphoneshave…jokesasalespersoninBeijing.”可知，人们常说

的打开GPS,可能就是在使用“北斗”卫星导航的功能。故选B。

9.细节理解题。根据第四段中“If