2023年中考英语时事热点阅读专练 热点64 认识5G及其广泛用途(学生版+解析版).docx

2023年中考英语时事热点阅读专练热点64认识5G及其广泛用途一、阅读理解1Therehasbeenalotofnewsrecentlyabout5Gbutwhatisthistechnology（技术）andhowmightitchangeourlives?Whatis5G?5Gstandsforthenextstepinthedevelopmentoftechnologytoreplace4Gsystem.EarlierGsystemsweredesignedtoimprovemobilecommunicationoperations.Thenew5Gsystemisexpectedtoallowmoreuserstodomorethingsatafasterspeed.ItwillmovewellbeyondmobilenetworktechnologytoinfluencemanymoreindustriesthanotherG”systems.Whenwill5Gbeinuse?Beforewecanalluse5G,wirelesscompaniesandphonemakerswillhavetocompleteawholenewsystem.Newphonesandcommunicationequipment（设备）mustbebuilt.Chinaisexpectedtoput5Gontothemarketsoineiimein2020,whileEuropeannationsarelikelytobuildtheirsystemsmoreslowlyovertime.In（heUSA,thefirst5G-readyphonescanbefoundinthemarketinthefirsthalfofthisyear.Thefirst5GiPhone,however,isnotexpecteduntil2020.4Gphoneswillworkon5Gnetworks,butnotat5Gspeeds.Whatcan5Gdo?Wirelessindustrygroupssay5Gwillhelpthedevelopmentofthefuture“smartcities.5Gisalsoexpectedtoconnectself-drivingcarsandsupportnewtechnologies.Higher5Gspeedscouldalsohelpdoctorstocommonlydoremoteoperations（远程操作）.Factoriesandbusinessescoulduse5Gtechnologytoincreaseautomation（自动化）andimprovethecollectionofinformation.Manymorekindsofdata（数据）willbetravelingacross5Gnetworks.Muchofthedatacouldincludepersonaldetailsaboutpeople,businessesorgovernmentorganizations.Theincreaseddataflowwouldgiveinternetattackersalotmorepossibilitiestostealandmisusedata.Whatsmore,thewideruseofa5Gwirelessnetworkmeansanybreakdownofthesystemwouldhavemoreseriousresults.Suchdifficultiescouldinfluencepublicsafetyaswellasworldeconomicactivity.Forexample,afailureduringadoctorsremotelyguidedoperationcouldleadtothedeathofapatient.Oranetworkbreakdowncouldcauseself-drivingcarstocrash.30.A.futureB.pastC.old31.A.offerB.offeringC.tooffer32.A.talkB.tellC.say33.A.fastB.fasterC.fastest34.A.howB.whyC.what35.A.orB.toC.and36.A.possibleB.impossibleC.probably37.A.singersB.doctorsC.engineers38.A.safelyB.carefullyC.quickly三、短文汉语提示填空Chinaisbuilding5Gnetwork.Shanghaivice-mayor（副市长）WuQingmadethefirst5Gv39.callonaHuaweiMateXphoneonMarch30,CGTNreported.Shanghaiisthefirstc40,inChinatostartatestrunofSGnetworks.About100t4l.fasterthan4Gnetworks,5Gwillhelppeopledownloadthingfaster（hanever.Itwillalsobeusedino42.areas.Self-divingcanmaybeoneoftheb43.breakthrough（突破）.Todaysselfrivingtestcarshaveonep44.Whenthecarsees”something,its45.thisinformationtoadata（数据）centertowaitfortheinstructions（指令）.However,thecarcanrunintothethingsifitd46.receiveinstructionsintime.5Gnetworkswillmakethetimethistakesshorterandthecarswillbesafer.CNNnoted.5Gcouldalsopowertheinternetofthings（loT物联网）.Thismeansverybigonlinenetworkthatconnect（连换）everythingande47.Veryfastinternetspeedsarethekeytorealizingit.Forexample,withloT,yourf48.willordereggsonlinewhenitnotices（hattherearenoeggsleftinside.2023年中考英语时事热点阅读专练热点64认识5G及其广泛用途一、阅读理解1Therehasbeenalotofnewsrecentlyabout5Gbutwhatisthistechnology（技术）andhowmightitchangeourlives?Whatis5G?5Gstandsforthenextstepinthedevelopmentoftechnologytoreplace4Gsystem.EarlierGsystemsweredesignedtoimprovemobilecommunicationoperations.Thenew5Gsystemisexpectedtoallowmoreuserstodomorethingsatafasterspeed.ItwillmovewellbeyondmobilenetworktechnologytoinfluencemanymoreindustriesthanotherGsystems.Whenwill5Gbeinuse?Beforewecanalluse5G,wirelesscompaniesandphonemakerswillhavetocompleteawholenewsystem.Newphonesandcommunicationequipment（设备）mustbebuilt.Chinaisexpectedtoput5Gontothemarketsometimein2020,whileEuropeannationsarelikelytobuildlheirsystemsmoreslowlyovertime.IntheUSA,thefirst5G-readyphonescanbefoundinthemarketinthefirsthalfofthisyear.Thefirst5GiPhone,however,isnotexpecteduntil2020.4Gphoneswillworkon5Gnetworks,butnotat5Gspeeds.Whatcan5Gdo?Wirelessindustrygroupssay5Gwillhelpthedevelopmentofthefuture“smartcities.5Gisalsoexpectedtoconnectself-drivingcarsandsupportnewtechnologies.Higher5Gspeedscouldalsohelpdoctorstocommonlydoremoteoperations（远程操作）.Factoriesandbusinessescoulduse5Gtechnologytoincreaseautomation（自动化）andimprovethecollectionofinformation.Manymorekindsofdata（数据）willbetravelingacross5Gnetworks.Muchofthedatacouldincludepersonaldetailsaboutpeople,businessesorgovernmentorganizations.Theincreaseddataflowwouldgiveinternetattackersalotmorepossibilitiestostealandmisusedata.Whatsmore,thewideruseofa5Gwirelessnetworkmeansanybreakdownofthesystemwouldhavemoreseriousresults.Suchdifficultiescouldinfluencepublicsafetyaswellasworldeconomicactivity.Forexample,afailureduringadoctorsremotelyguidedoperationcouldleadtothedeathofapatient.Oranetworkbreakdowncouldcauseself-drivingcarstocrash.1. Thewritingpurposeofthepassageisto.A. introducesmartcitiesB.introducethenew5GtechnologyC.tellus5GtechnologyisnotsafeD.encouragemorepeopletobuy5Gphones2. Whichofthefollowingexpressionscanbethesubtitleofparagraph5?A. Howwill5Gsystemschangetheworld?B. Howwillthedatabeused?C. Whatarethesafetyrisks?D. Whatkindofdatacannetworkscollect?3. WhichofthefollowingexpressionsisNotTrueaccordingtothispassage?A. Userscandomanythingsatafasterspeedon5Gnetworks.B. 5Gnetworksdonotsupport4Gphones.C. 5Gtechnologycanbeusedtocollectalargeamountofinformation.D. 5GdevelopsmoreslowlyinEuropeancountriesthaninChina.4. Whatcanwcinfcr（推断）fromthepassage?A. Thenetworkbreakdownmayleadtosomeseriousresults.B. Peoplecanbuythefirst5GPhonein2020inAmerica.C. Thenew5Gsystemwillinfluencepublicsafetyaswellasworldeconomicactivity.D. 5Gtechnologymayimprovepeoplesself-drivingexperience.【答案】BCBD【解析】本文围绕“什么是5G；何时开始使用：能做什么；安全风险是什么等四方面介绍5G技术。1. 主旨大意题。根据第一*段Therehasbeenalotofnewsrecentlyabout5G,butwhatisthistechnologyandhowmightitchangeourlivcs5G这项技术是什么？它将如何改变我们的生活；可知，这篇文章的写作目的是介绍新的5G技术；故选B。2. 推理判断题。根据第五段u.Suchdifficultiescouldinfluencepublicsafetyaswellasworldeconomic数据可能被窃取和滥用、系统的任何故障都将产生更严重的后果，这些困难可能影响公共安全和世界经济；可知，本段讲述5G技术面临的安全问题；故选C。3. 推理判断题。根据第三段“4Gphoneswillworkon5Gnetworks,butnotat5Gspeeds可知，4G手机将在5G网络上运行，选项B表述错误；故选B。4. 推理判断题。根据第四段5Gisalsoexpectedtoconnectself-drivingcarsandsupportnewtechnologies”5G还将连接自动驾驶汽车并支持新技术；可知，5G技术可以改善人们的自驾体验；故选D。2Chinaisrunningaheadin5G.InMarch,2019,theShanghaiHongqiaoRailwayStationbecameworldsfirst5Grailwaystation.Now,ittakesonly20secondstodownloadalongmoviethere.Wearemovingcloserandclosertothe5Gworld.However,thenewtechnologyisstillstrangetomostofus.Whalis5G,afterall?Alfirst,5Gisfast.5Gwillbemuchfasterthantodays4Gnetworks!Thefirst5Gmodem（猫，调制解调器）oftheITcompanyQualcommsupportsspeedsof叩to5Gigabytes（千兆字节）persecond.Mostofushaveneverexperiencedanythingclosetothatspeed.Andweareonlytalkingaboutthefirstgeneration（*代）of5Gmodems.Futuremodelsarelikelytobeevenfaster.But5Gisnotallaboutspeed.Haveyoueverbeentoalargeeventwhereyourdata（数据）connectionsloweddown?Thatisbecause4Gnetworkscanonlysupportacertainnumberofdevices（设置）persquaremeter.5Gnetworkswillbeabletodomuchbetter.Theycansupportuptoamilliondevicespersquarekilometer.Now.youbegintounderstandwhy5Gisahugechangeover4G.Thetechnologyisnotjustforthesmartphones.Ithasastronginfluence（影响）oneveryconnecteddevice.With5G,self-drivingcarswillbeabletocommunicatewiththeworldaround（hemasquicklyaspossible.Wearables,Pcsandsmarthomedeviceswillbeabletoimproveaswell.Areyoulookingforwardtothat5Gworldnow?5. Eachofthefollowingismentionedabout5GEXCEPT.A. thefirstplacewhere5Gisusedintheworldthespeedofusing5GtodownloadB. thewayof5GspreadingParagraph4showstheadvantagesof5Gby.A. usingdifferentadvicecomparing5Gwith4GB. somedataof5GnetworksHowmanyfieldsofusing5Gdocsthepassagetclius?A. Three.B.Four.C.FiveFromthepassage,whichofthefollowingisNOTTRUE?A. 5Gtechnologyiscloserandclosertous.B. 5Gself-drivingcarswillbecheaperthananyothercars.C. ITcompanyQualcommproducedthefirstgenerationof5Gmodems.6. Whatsthebesttitleforthepassage?A. Whats5G?B.Howis5Gused?C.Is5Ggoodorbad?【答案】CBCBA【解析】短文通过与4G网络作对比，介绍了5G网络的优势及5G网络的一些应用领域：智能手机、自动驾驶汽车、可穿戴设备、个人电脑和智能家庭设备等。5. 推理判断题。根据第一段“theShanghaiHongqiaoRailwayStationbecameworldsfirst5Grailwaystation介绍全球首个使用5G的地方上海虹桥火车站；Now,ittakesonly20secondstodownloadalongmoviethere介绍使用5G下载的速度；文中没有介绍5G传播。故选C。6. 推理判断题。根据第四段可知对比4G和5G网络每平方米支持设备的数量，说明5G的优势。故选B。7. 推理判断题。根据第五段Thetechnologyisnotjustforthesmartphones.Ithasastronginfluenceoneveryconnecteddevice.With5Gself-drivingcarswillbeabletocommunicatewiththeworldaroundthemasquicklyaspossible.Wearables,Pcsandsmarthomedeviceswillbeabletoimproveaswell.这项技术适用于智能手机、自动驾驶汽车、可穿戴设备、个人电脑和智能家庭设备等五个五方面。故选C。8. 推理判断题。第二段“Wearemovingcloserandclosertothe5Gvorld,可知，5G世界离我们越来越近；第三段“Thefirst5GmodemoftheITcompanyQualcommsupportsspeedsofupto5Gigabytespersecond”可矢U,IT公司Qualcomm生产了第一代5G调制解调器：文中没有提及选项B的信息。故选B。9. 最佳标题。短文主要通过与4G网络作对比，介绍了5G网络的优势及5G网络的些应用领域，所以短文的最佳标题应该是“什么是5G?”。故选A。3Chinesecompaniesleadinglobal5GpatentapplicationswithHuaweitaking(hecrown,according(oareportbyIPIytics,anauthorizedpatentdatacompany.ThreecompaniesfromChinawereincludedinthetop10listof5GStandards-EssentialPatents(SEPs)familyowners,Huaweirankedfirst.ZTECorpandChinaAcademyofTelecommunicationsTechnology(CATT)grabbedfifthandninthplaces.Chinesecompaniestoppedthelistwithmost5GSEPsapplicationsincommunicationsystemsbytheendofApril2019,accountingfbr34percentoftheworldstotal.ChinesetechgiantHuaweihastakenaleadingrolebyowning15percentofSEPs,accordingtothereport“WhoIsLeadingthe5GPatentRace?SGSEPsarepatentsthatanycompanywillhavetousewhencarryingout5Gandnoonecanavoidthem.Differentfrom3Gand4Gtechnologies,5Gtechnologywillinfluencevariousindustriesandencouragetheappearanceofmanynewproducts,servicesandindustries.Theautomotivesectorwillmostlikelybeoneofthefirstindustriestodependon5G,whichwillconnectvehiclestoothervehicles,roadsides,trafficlightsbuildingsandtheInternetaccordingtothereport.Itis5Gthatisgoingtobeahugejumpforwardfbrcommunicationsystemsbecauseonlywith5Gshigherbandwidthcananumberofapplicationsbemoreadvancedandusedbymostconsumers,saidNicolePeng,seniordirectorofthemarketresearchcompanyCanalys.As5Gtechnologyhascombinedvariousindustriesandtechnologies,thenumberof5GSEPsrosetomorethan60,0(X)globallybytheendofApril2019,thereportsaid.10. WhichonewasNOTonthetop10listof5GSEPs?A. Canalys.B.Huawei.C.ZTECorp.D.CATT.11. Whatisthemainideaofthefirsttwoparagraphs?A. NocompaniescanavoidSGSEPs.B.IPIytiesisanimportantdatacompany.C.Chinesecompaniesleadthe5Gpatentrace.D.Chinaowned34%oftheworldsSGSEPsapplications.12. WhatdoesNicolePengthinkof5G?A. Variousindustrieswillbehelpfulfbr5Galot.B.Manyapplicationswillmake5Gmoreadvanced.C.5Gwillbeusedbymanymostadvancedconsumers.D.5Gwillmakegreatprogressincommunicationsystems.13. WhichofthefollowingisTRUEaccordingtothepassage?A. 5Gwillbefirstusedbytheindustiyoftheautomotivesector.B. Variousindustriesandfarmingwillbemostlyinfluencedby5G.C. 5Gwillencouragemanynewproducts,services,andindustriestoappear.D. More(han6.000SGSEPshadbeenusedbytheendofApril2019.【答案】ACDC【解析】本文是一篇说明文。文章介绍了中国公司在全球5G专利应用中处于领先地位，其中华为摘得桂冠，并简单介绍了5G技术的发展及其对其他领域产生的影响。7. 细节理解题。根据ThreecompaniesfromChinawereincludedinthetop10listof5GStandards-EssentialPatents(SEPs)familyowners,Huaweirankedfirst.ZTECorpandChinaAcademyofTelecommunicationsTechnology(CATT)grabbedfifthandninthplaces.,可知，进入5G核心专利榜单的有华为、中兴(ZTECorp)和中国电信科技研究院（CATT）o故选A。8. 主旨大意题。根据Chinesecompaniesleadinglobal5GpatentapplicationswithHuaweitakingthecrown可知，文章前两段主要讲述以华为为首的中国企业在全球5G专利应用中占据领先地位。故选C。9. 推理判断题。根据Ttis5Gthatisgoingtobeahugejumpforwardfbrcommunicationsystems,可知，对于通信系统来说，5G将是一个巨大飞跃，也就是说他认为5G将在通信系统方面取得重大突破。故选D。10. 细节理解题。根据Differentfrom3Gand4Gtechnologies,5Gtechnologywillinfluencevariousindustriesandencouragetheappearanceofmanynewproducts,servicesandindustries?可知，5G技术将推动许多新产品、服务和行业的出现。故选C。4Thechangesinourlivesusing5G（使用5G给我们生活带来的变化）Doyouknow5G?Ilisthefifthgeneration（代）ofmobilenetworktechnology.Thesenewnetworksarecoming.Chinajustissuedcommerciallicenses（发放商用牌照）fbr5GonJune6.ThismeansthatChinastclccomcompaniesweresoonabletooffer5Gnetworksfbrmobilephoneusers.Eachmobilenetworkgenerationisfasterandmorepowerfulthantheonebeforeit.IGletustalktoeachother.2Gletussendmessages.3GgaveusdataandtheInternet.And4Gmadeallofthesethingsfaster.Whatsspecialabout5G?5Ghasaveryshortdelaybetweensendingandreceivinginformation.Now,4Gtakesabout100to200milliseconds（毫秒）tosendandreceivedata.Bu（5Gwillgetitdownto1millisecondorlessthisisalmostreal-time.ThisbigchangewillnotonlymakeourmobileInternetfaster,butalsodeeplychangeourlives.Readontofindouthow.5G+entertainment（娱乐）5Gnetworksareabout1（X）timesfasterthan4GThismeansyoucandownloadamovieinsecondsusing5G.Also,virtualrcality（VR）gameswillbecomemorepopularwith5GTheshortdelayof5Gwillmakethegamesfeelevenmorereal.5G+transportation5Gwillalsobringussaferself-drivingcars.Thesecarscansendsignals（信号）toeachother.Theyalsotalktotrafficlightsandroadsensors（传感器）.5Gwillallowcarstoreactevenfasterthanhumandrivers.5G+smarthomes5GalsomakestheInternetofthingspossible.InternetofthingsisalargenetworkthatconnectseverythingtotheInternet.Smarthomesarepartofit.Forexample,yourtoastercanautomatically（自动地）startmakingbreakfastafteryouralarmrings.Andifitssensorfeelstheairbecomingdry,asmartsprinklercouldwateryourplantsbyitself.11. WhathappenedonthesixthdayofJuneaccordingtothepassage?A. 5GcameintouseChinaissuedcommerciallicenses.B. Mobilephoneuserscouldtalktoeachother.C. 5Gdelayedbetweensendingandreceivinginformation.12. WhatdoestheunderlinedworddelayinParagraph4probablymeaninChinese?A. 延时B.暂停C,断开D.卡顿5GwillchangepeopleslivesinmanywaysEXCEPT.A. entertainmentB.IransporUitionC.smarthomesD.healthWhichofthefollowingisNOTtrueaccordingtothepassage?A. Wecandownloadamoviefasterwith5G.B. Humandriverscansendsignalsattrafficlights.C. Theplantscanwaterthemselvesbyasmartsprinklerwith5G.D. 5Gisfasterandmorepowerfulthan4GWhatsthemainideaofthepassage?A. Mobilephoneuserscanuse5Gnetworks.B. Eachmobilenetworkgenerationhastheirownadvantages.C. 5Gwillchangeourlivesinmanyways.D. 5Gwillbringussaferself-drivingcars.【答案】BADBC【解析】本文主要讲述了第五代通讯技术会从许多方面改变人们的生活。14, 细节理解题。根据第二段中Chinajustissuedcommerciallicensesfor5GonJune64.”可知,6月6日,中国刚刚发放了5G的商用牌照。故选B。15. 词义猜测题。根据画线词所在卜文“Now,4Gtakesabout100to200millisecondstosendandreceivedata.But5Gwillgetitdownto1millisecondorless.可知，5G的速度比4G快了很多,发送和接受消息花费的时间更短，由此可知delay”的意思是“延时”。故选A。16. 细节理解题。根据文中4t5G+entertainment；5G+transportation；5G+smarthomes可知，5G会在娱乐、交通运输、智能家居这三方面改变人们的生活，但是不包括健康方面。故选D。17. 细节理解题。根据倒数第三段中“5Gwillalsobringussaferself-drivingcars.Thesecarscansendsignalstoeachother/可知自动驾驶汽车可以互相发送信号，并不是人类司机，B项错误。故选B。18. 主旨大意题。根据第五段中ThisbigchangewillnotonlymakeourmobileInternetfaster,butalsodeeplychangeourlives.并结合全文可知，文章主要讲述了5G会在许多方面改变我们的生活。故选C。5Topic4G5GSpeed4Gtakesabout100to200milliseconds（毫秒）tosendandreceiveinformation.5Gwillhelpcutdownthetimeto1milli-secondorless.AmusementWecanjustexperiencetheVRgamesinspecialplacesonceinawhile.VRgameswillbecomemorecommonandexcitingwith5G.TrafficMostpeoplecanttrustself-drivingin4Gbecauseofunexpectedproblems.5Gwillmakeself-drivingcarshavemuchfasterreaction（反应）than4G.SmartHomesJustasmallpartofthehousehasBlue-toothtoconnectin4GInsmarthemes,yourhomemachinescanstartworkingaheadoftime.5Gwillnotonlymakeournetworkfaster,butchangemanythingsinourlives.Althoughnoteveryonecanuse5Gnow,Chinaistryingitsbesttoleteveryoneuse5Gassoonaspossible.19. Whendidpeopleuse5GinChina?C.InJune,2020.D.Doesntknow.A. OnMay30th,2019.B.InJune,2019.20. Howfasteris5Gthan4G?B.5Gisabout10timesfaster.A. 5Gisabout100-200timesfaster.C.4Gisasfastas5G.D. Thepassagedoesntmentionit.21.YoucanA.trustself-drivingin4GtotallyC.useBluetoothtoconnecteverythingin4GB. useself-drivingcarsmoresafelyin5GD. makeyourhomemachinesworkaheadoflimein4GWhichofthefollowingisTRUE?A. HuaweihelpedtheBBCuse5Gforthefirsttimeintheworld!B. 5GcannotmakeVRgamesmoreexcitingthan4G.C. 5Gwillchangeeverythinginourlives.D. Everyonecanuse5GinChinanow.22. ThispassageisprobablyfromA.anartbookA.anartbookB.asciencefictionatechnologymagazineD.asportsnewspaper【答案】BABAC【解析】本文讲述了2019年5月30日上午，华为帮助BBC在世界上第一次使用5G技术进行新闻报道。中国从2019年6月开始使用5G。作者以表格的形式，对5G技术和4G技术的区别加以阐述。13. 细节理解题。根据第一段第3句Chinabegantouse5GinJune,2O19.,iJ知，中国人在2019年6月开始使用5G。故选B。14. 推理判断题。根据表格第一行Speed中4Gtakesabout100to200milliseconds（毫秒）cosendandreceiveinfonnation.5Gwillhelpcutdownthetimeto1milli-sec可知，4G发送和接收信息大约需要10（）到200毫秒，而5G将只需要1毫秒，由此可知，5G比4G快大约100-200倍，故选A。15. 细节理解题。根据表格第4行中“5Gwillmakeself-drivingcarshavemuchfasterrcaction（反应）than4G.可知，您可以在5G中更安全地使用自动驾驶汽车；故选B。16. 细节理解题。根据第2段第1和2句OnthemorningofMay30th,2019,HuaweihelpedtheBBCuse5Gtoreportnews.Itwasthefirsttimethat5Gwastriedintheworld!可知,华为帮助英国广播公司在世界上第一次使用5G；由此可知A正确，故选A。17. 推理判断题。本文主要讲述了5G技术和4G的区别，由此可知，本文可能来自科技杂志；故选C。1. Thewritingpurposeofthepassageisto.A.introducesmartcitiesB.introducethenew5GtechnologyC.tellus5GtechnologyisnotsafeD.encouragemorepeopletobuy5Gphones2. Whichofthefollowingexpressionscanbethesubtitleofparagraph5?A. Howwill5Gsystemschangetheworld?B. Howwillthedatabeused?C. Whatarethesafetyrisks?D. Whatkindofdatacannetworkscollect?3. WhichofthefollowingexpressionsisNotTrueaccordingtothispassage?A. Userscandomanythingsatafasterspeedon5Gnetworks.B. 5Gnetworksdonotsupport4Gphones.C. 5Gtechnologycanbeusedtocollectalargeamountofinformation.D. 5GdevelopsmoreslowlyinEuropeancountriesthaninChina.4. Whatcanwcinfcr（推断）fromthepassage?A. Thenetworkbreakdownmayleadtosomeseriousresults.B. Peoplecanbuythefirst5GPhonein2020inAmerica.C. Thenew5Gsystemwillinfluencepublicsafetyaswellasworldeconomicactivity.D. 5Gtechnologymayimprovepeoplesselfdrivingexperience.2Chinaisrunningaheadin5G.InMarch.2019,theShanghaiHongqiaoRailwayStationbecameworldsfirst5Grailwaystation.Now,ittakesonly20secondstodownloadalongmoviethere.Wearemovingcloserandclosertothe5Gworld.However,thenewtechnologyisstillstrangetomostofus.Whatis5G,afterall?Atfirst,5Gisfast.5Gwillbemuchfasterthantodays4Gnetworks!Thefirst5Gmodem（猫,调制解调器）oftheITcompanyQualcommsupportsspeedsofupto5Gigabytes（千,兆字节）persecond.Mostofushaveneverexperiencedanythingclosetothatspeed.Andweareonlytalkingaboutthefirstgeneration（*代）of5Gmodems.Futuremodelsarelikelytobeevenfaster.But5Gisnotallaboutspeed.Haveyoueverbeentoalargeeventwhereyourdata（数据）connectionsloweddown?Thatisbecause4Gnetworkscanonlysupportacertainnumberofdevices（设置）persquaremeter.5Gnetworkswillbeabletodomuchbetter.Theycansupportuptoamilliondevicespersquarekilometer.Oneafteranother,telecommunicationsgiantssuchasHuawei,SamsungandQualcommhaveannouncedtheirlatestfifthgeneration（5G）productswithHuaweisMateXandSamsungsGalaxyFoldattractingmosteyeballs.Thetelecomgiantshavealsoannouccdthat5Gtechnologywouldbewidelyusedby2020,causingsomeexpertstosaythe5Gepochiscoming.Yet,whenreportingabout5G,manyreportershavedescribeditasamuchfastef,technologythan4Gwithoutmentioninganyofitsotheradvantages.Asaresult,thecommonpublicideaabout5Gisthattheycoulddownloadahugemoviewithinonesecond,.Beyondthat,mostpeopleknownothingabout5G.Actually,5Gtechnologyhasmanymoreadvantagesthan4Gapartfromspeed.Accordingto3GPP,aninternationalstandardizationorganization,5Gtechnologycanbeusedforatleastthreepurposesforconnectingeverything,reliability（川靠性）ofconnections,andremovingdelays.“Connectingeverything,isapropersloganfor5Gtechnology,withoutwhichtheInternetofThingswouldbeimpossible.Forexample,self-drivingcarscontainseveralkindsofsensors,suchasradar,computervision,andGPStoidentifydrivingroutes,obstaclesandroadsigns.5Gtechnologywilllinkalltheelementsofatransportationsystem,suchas（rafflelights,CCTVcamerasand,ofcourse,carstobuildupperfectcoordinationsotheycanavoidobstaclesandmoveondrivingroutes,whichwillhelpstrengthenself-drivingtechnology.Reliabilityofconnectionsisanotherkeycharacteristicof5Gtechnology,whoseusecanbespreadtootherfieldswherehighsafetystandardsarerequired.Forexample,incertainsurgeries（夕卜科手术），doctorsputnano-robotsinsideapatientsbodyandhavetokeepconstantcontrolovertherobots