专题06网络安全 -备战2022年中考英语阅读理解热点话题模拟练

06网络安全Passage1Asweknow,thetimeof5Gtechnology（技术）iscoming.Recently,there'salotofinformationabout5G.Butwhatisthistechnologyandhowmightitbringtoourlives?Whatis5G?5Gmeansthefifthgeneration（第五代）mobilenetworks（网络）,abettertechnologythan4G.Andweknow,4Gcomesafter3Gandmakesthenetworkrunfasterthan3G.Whenwill5Gcometoourlife?Beforewecanalluse5G,theremustbeanewsystem（系统）for5Gtowork.IntheUSA,somecitieswillfirstuse5Gthisyear.Expertssayitwilltakeafewmoreyearsorevenlongertoreacheveryplace.InChina,afewcitiesareusing5Gnow.Andmoreandmorecitieswilljointhisgroup:Nextyear,5Gwillbecomenational,eveninthecountryside.Whatcan5Gdo?Expertssay5Gwillhelptobuildfuture"smartcities"withthehelpofsensornetworks（传感器网络）.Suchnetworkswillbeabletohelpthepolicewiththetraffic.Theycanhelpusknowwhat’shappeninginourhomeswhenweareatwork.Theycanevenhelptomadeitpossiblefordoctorstoperformanoperation（手术）faraway.________Inthefuture,moreinformationandmorekindsofinformationwillbetravellingacross5Gnetworks.Muchoftheinformationcouldbeaboutpersons,businessesorgovernmentorganization（政府组织）.Sowecanseethewider（更广泛地）useofa5Gnetworkmeansanymistakeofthesystemwouldcauseseriousresults.Thentheymaybringproblemsofpublicsecurity（安全）andworldeconomic（经济）activity.1．Accordingtothepassage,5Gis________.A．akindofphone B．akindofcomputer C．akindofnetwork D．akindofwebsite（网站）2．Theunderlinedword“They”refersto________.A．Experts B．Thepolice C．Doctors D．Thenetworks3．WhichofthefollowingisNOTmentionedabout“smartcities”inthispassage?A．Housebuilding. B．Traffic. C．Homesecurity. D．Operations.4．Theunderlinedword“national”inthepassagemeans“________”inChinese.A．民族的 B．国立的 C．全国性的 D．普通的5．Whichsentenceisthebestfortheplace________A．Whowilluse5G? B．Whywill5Gbepopular?C．Howwillpeopleuse5G? D．Whatarethesecurityproblems?Passage2ThenightofNov.3wasveryspecialtoAustraliantennisplayerAshleighBarty,23.Shewonherfirstsingletitle(单打冠军)atthe2019Women'sTennisAssociation(WTA)FinalsinShenzhen.Bartytookhomearecord$4.42million(31millionyuan)prizeforthetitle,thebiggestprizeintennis.ShehasheldtheWTAWorldNo.1titlefor15weeks.becomingthefirstAustralianwomantodoso.Chinahasbuilttheworld'slargesthigh-speedrailnetwork,whichisstillexpanding(扩张).Lastyear,thetotallengthofthenetworkreached29,000kilometers.Thetrainshaveattractedmillionsoftravelersandgreatlyreducedtravelingtimearoundthecountry.Forexample,traveltimefromBeijingtoShanghaihasbeenreducedfromtenhourstofivehours.Chinaisalsosharingthistechnologywithmanyothercountries.Overthepastdecades,manypeoplehavemadegreatcontribution(贡献)toChina’sdevelopment,helpingitgrowthroughtheirhardwork.OnSept.29,aheadofNationalDay,ChinesePresidentXiJinpingpresentednationalmedalsandhonorarytitles(荣誉称号)tosomeofthesecontributors,,includingthirty-sixChinesecitizensandsixforeigners.PresidentXihelpedthemputonthemedalsandshookhandswiththem.Sept16to22isChina'ssixthannualCyberSecurityWeek(网络安全周).AnopeningceremonyandmajoractivitieswereheldTianjin.Firstheldin2014,theeventaimstoremindpeopleoftheimportanceoffightingonlinethreats(威胁)andcyberattacks.Thethemeofthisyear'seventis"cybersecurityforthepeopleandbythepeople".Oneofthegoalsofthisyear’seventistoteachpeoplehowtoprotecttheirpersonaldata(数据).6．AboutAshleighBarty,whichofthefollowingisTRUE?A．ShewonasingletitleatWIAFinalsinShenzhen,Chinalastyear.B．Shegotaprizeof3,100,000yuanforherfirstsingletitleatWTA．C．ShehasheldtheWTAWorldNo.1titleformorethanoneyear.D．ShewasthefirstAustrianwomantowinthesingletitleatWIA．7．Fromtheabovereading,welearnthat_________.A．thetotallengthofthenetworkreached29,000meterslastyear.B．Chinahasgotthelargesthigh-speedrailnetworkintheworld.C．itonlytook5hoursfromShanghaitoShenzhenbyhigh-speedtrain.D．Chinasharesthehigh-speedrailtechnologywithfewothercountries.8．Accordingtothepassage,howmanypeoplewereawardednationalmetalsandhonorarytitles?A．38 B．36 C．6 D．429．Accordingtothepassage.thepurposeofCyberSecuityWeekisto_________.A．holdawonderfulopeningceremonyanddifferentkindsofactivities.B．helppeopleknowthatitisimportanttofightonlinethreatsandcyberattacks.C．helppeopleknowwhatiscybersecuityandhowtoprotectthemselves.D．teachpeoplehowtoprotecttheirpersonaldata.Passage3SinceMay12,acomputervirusnamedWannaCryhasinfected(感染)morethan300,000computersinover150countries,accordingtoReuters.WannacryisspreadbyusingaweaknessinMicrosoft'sWindowsoperatingsystem.Oncethevirusgetsintothecomputer,itlocksallthepapersandaskstheuserformoneytounlockthem.Atfirst,itasksfor$300,butiftheuserdoesn'tsendthemoneyin72hours,thepricedoubled.Papersarelockedforeveriftheuserdoesn'tpayinsevendays.Thevirushasbroughtbadresults.Forexample,intheUK,thevirusleftthecountry’sNationalHealthServiceinamess.Somehospitalshadtocancelpatientappointments(预约),reportedTheTelegraph.InChina,thevirushashitthousandsofcomputers,accordingtoQihoo360.Oneofthemosthard-hitgroupsinChinawereuniversityusers.Manystudents'graduationpaperswerelocked.Theyfeltnervousandfrightened.Alsomanygasstationswereseriouslyhit,andthepaymentsystemdidn’twork.WanaCryisthelatestexampleofthecybersecurity(网络安全)problem.MatthewHickey,whosetupthesecuritycompanyHackerHouse,said,"Theattackisnotsurprising.Itshowsthatmanyorganizationsdonotuseupdates(更新)fastenough.Accordingtoasurvey,nearlyhalfofthepeoplesaid,“Wearenotsatisfiedwiththewaysoftwareupdateswork.”AsChinaDailywrote,“Wecan’tcompletelyprotectourcomputersagainstthesekindsofviruses,asthiscatandmousegamewillcontinueforever.Thebestchoiceformostusersistotakecareonlineandalwaysinstall(安装)softwareupdates.”10．WhatisWannaCry?A．Avideogame. B．Acomputersoftware. C．Acomputervirus. D．ATVprogramme.11．IfyourpapersarelockedbyWannacry,howmuchdoyouneedtopayifyoudon’tsendthemoneyin72hours?A．$150. B．$300. C．$600. D．$900.12．Accordingtothepassage,thewritershowsthebadresultsby________.A．givingreasons B．givingexamples C．comparingcomputers D．comparingnumbers13．Fromthelasttwoparagraphs,wecanknowthat________.A．MatthewHickeythinkstheattackoncomputersisverysurprisingB．allthepeoplearepleasedwiththewaysoftwareupdatesworkC．thecomputerscanbecompletelyprotectedagainstthesevirusesD．weshouldtakecareonlineandupdatesoftwarefastenoughPassage4Slowlybutsurely,we’removingcloserandcloserto5Gworld.Fromsmart-homesecuritytoself-drivingcars,alltheinternet-connecteddevices（装置）inyourlifewillbeabletotalktoeachotheratlightning-fastspeeds.Objectivelyspeaking,thefastest4GdownloadspeedsintheU.S.topoutatanaverageof19.42Mbps.Butbycomparison5Gpromisesgigabit（千兆）speeds.“5Gisoneofthosesigns,alongwithartificialintelligence（人工智能）,ofthiscomingdataage.”saidSteveKoenig,seniordirectorofmarketresearchfortheConsumerTechnologyAssociation.Theself-drivingvehicleisagreatemblemofthisdataage,andthatistosay,itisasignoftime,becausewithonesingletask,driving,youhavelargeamountsofdatacomingfromthevehicleitself,andavarietyofsensors（传感器）arecollectingalotofinformationtomodelitsenvironmentasitmoves.It’spullingindatafromothervehiclesaboutroadconditions.Itcouldbeweatherinformation,butalsoconnectedinfrastructureconstruction（基础设施建设）.There’slotsofdatabehindthattask,whichiswhyweneedhighspeed.Augmentedrealityglasses（实境眼镜）andvirtualheadsethaven’tyetbrokenthemainstream（主流）,buttechcompaniesarejoyfullybettingthatthesedeviceswillfinallytaketheplaceofoursmartphones.With5G,thatcouldactuallyhappen.ThisisnotablebecausecompaniessuchasApplearereportedlydevelopingARglassestogivehelp-orperhapsevenreplace-smartphones.EricssonstatedatFebruary’sMobileWorldCongresshowsmartglassescouldbecomefasterandlighterwitha5Gconnection,becauseinsteadofbeingweigheddownwithcomponents,theglassescoulddependonhardwareforprocessingpower.Butdon’tgettooexcited.There’sstillalotofworktobedone,includingvariouswaystomakesuretheradiosplaynicelywithhardwareandinfrastructureconstructionso5Gisn’tusedonlyinbigcities.14．WhatdoestheauthorwanttostressinParagraph1?A．Thelighting-fastspeedof5G.B．TheexpectationofSGworld.C．Thedifferencebetween4Gand5G.D．Theinternet-connecteddevicesinourlife.15．Whatdoestheunderlinedword"emblem"inParagraph2mean________?A．Show. B．Success. C．Symbol D．Explanation16．Wecaninferfromthetextthat________A．5Gworldwon’tcomewithoutARglassesB．5GhelpstocreatetheartificialintelligencevehicleC．ApplecompanyisdevelopingARglassesworldwideD．Techcompanieswillfacethefactthatsmartphonesmaybereplaced17．Whatwilltheauthorprobablytellusnext？A．Howtomake5Gcovermoreareas..B．Smartglasseswillbecomefasterandlighter.C．Why5GIsn’tusedinbigcities.D．Theimportanceofinfrastructureconstruction.Passage5AfewyoungstudentsaretalkingaboutsomethingonWeChat.Hieveryone!Ilikesportsverymuchandplaybasketballalmosteveryday.Ialsoliketoeatfastfood,butmyparentsaskmetoeatitonlyonceamonth.——BillSorrytohearthat,Bill.However,maybeyourparentsareright.Fastfoodisn’tgoodforyou.Iseldomeatit.Onweekends,Ioftendosomehouseworktomakemyparentsrelax(放松).AndIusetheInternetonlyonceaweek.Ihavealotofhomeworktodoeveryday.——KateYes,westudentsarealwaysbusywithourstudies.ButonFridayevening,Iusuallygoshoppingwithmymother.It’sreallyfun.IenjoywatchingTV,too.AndIdoitalmosteveryday.Somyparentsarekindofunhappysometimes.——TonyAllparentslikethat.MyparentsneverletmewatchTVorplaycomputergames!Onweekends,theyalwayswantmetostudyalmosteveryminute.Butluckily,IcangotomovieswiththemeverySaturday.AndonSundaytheyletmegooutwithmyfriendswhenIfinishmyhomework.Sometimestheyarereallygood!——Lisa18．Kateoften________attheweekend.A．playsbasketball B．helpswithhouseworkC．goestothemovies D．usestheInternet19．WhousuallybuysthingsonFridayevening?A．Bill. B．Kate. C．Tony. D．Lisa.20．Lisacangotothemovies________.A．everyday B．onceaweek C．twiceaweek D．onweekdays21．Fromthepassage,wecanknowthat________.A．BillofteneatsfastfoodB．KateneverusestheInternetC．TonyoftenwatchesTVD．Lisacangooutwithherfriendsatanytime22．Whataretheseyoungstudentsmainly(主要地)talkingabout?A．Theirparentsandtheirlife. B．Theireatinghabits(习惯).C．Theirfreetime. D．Theirstudyinghabits.Passage6Whetherfromnews,reportsorsocialmediaarticles,youmayknowthat5Giscoming.5Gisthe5thgenerationnetwork.Itisanewnetworkafter1G,2G,3Gand4Ganditcanconnecteveryoneandeverythingtogether.5Gmeanssuper-fastdata(数据)speed.Onecandownloadatwo-hourmovieinfewerthan10seconds,anditismakingourlivesmoreandmoreconvenient.5Gwillmakeself-drivingcarspossible.Forsafety,self-drivingcarsneedsuper-fastdatatransmission(传输)tocommunicatewiththeirnearbyenvironment.5Gisjustwhatmakesself-drivingcarsachievethis.Evenairplaneswillbecome“smart”inthenearfuture.5Gwillbeabighelpforstudentswhotakeonlineclasses.StudentsallovertheworldwillbeabletoseeplacesliketheGreatWallwithoutleavingtheirrooms.Itwillbealsoeasierfordoctorstotreatpatientsremotelyby5G.Itmeanscaringforpatientsfromfaraway.Thefactslistedaboveareonlypartofwhat5Gwillmakepossibleandpopular.JustasintheearlydaysoftheInternetinthe1990s,fewcouldseehowitcouldchangetheworld.Thesamewillsurelybetrueof5G.With5G,manythingsdonotseemlikedreamstoanyone.Nowlet’sgetreadytosaygoodbyeto4Gandwelcomethecomingof5G.23．Howlongmayittaketodownloadatwo-hourmoviewith5G?A．15seconds. B．8seconds. C．10minutes. D．2hours.24．Fromthelastparagraph,wecanknowthat________.A．4Gisnomoreusedinourdailylifenow B．thewriterisworriedaboutthecomingof5GC．with5G,someofourdreamswillcometrueforsureoneday D．inthe1990s,allthepeoplebelievedthattheInternetwouldchangeourlife25．5GwillmakethefollowingthingsmoreandmorepopularEXCEPT________.A．self-drivingcars B．“smart”airplanes C．onlineclasses D．hospitalswithdoctorsPassage7RecentlyauniversityinNanjing,JiangsuProvincehassetupfacialrecognitionsystems（人脸识别系统）intheclassroomstowatchstudents’behavior.Asaresult,ithascausedabigdiscussionontheInternet.ChinaPharmaceuticalUniversityputthesystemsintwotestclassroomsaswellasschoolgates,dormitoryentrances（宿舍入口）,thelibraryandlaboratorybuildings.AccordingtoXuJianzhen,directoroftheuniversity’slibraryandinformationcenter,thesystemswillhelpteacherscheckifstudentsareinclassandwatchwhattheyaredoingduringthelectures.“Inthepast,somestudentswereabsentfromclassafterteacherstookattendance（考勤）oraskedotherstudentstoanswer“Present!”forthem.Soitwasdifficulttotakecontrolofthem.Nowwithfacialrecognition,thatwouldnolongerbeaproblem,”hesaid.“Assoonasyouentertheclassroom,thecamerawillwatchyouallthewaythroughandrecordhowlongyouputdownyourhead,whetheryou’replayingwithasmartphone,you’resleepingoryou’rereadingotherbooks,”headded.Thenewshasraisedwidediscussiononline.Manypeoplearequestioningifthecameraswillinfringeonstudents’privacy（隐私）.However,thisisnotthefirstuniversitytousefacialrecognitiontechnologyinschool.Manyuniversitiesacrossthecountryhaveputcamerasattheschoolgatestomakesureofsafety.26．WherecanfacialrecognitionsystemsbeseeninChinaPharmaceuticalUniversity?A．Inalltheclassrooms.B．Inthedininghall.C．Inalltheuniversitybuildings.D．Intheplaceswherestudentsappearoften.27．Whyistheuniversityusingfacialrecognitionsystems?A．Tohelptheirstudentsstaysafer.B．Tomanagetheirstudentsbetter.C．Tohelptheirstudentsgetbettergrades.D．Tofindoutwhythestudentsdon’tlikeattendingclasses.28．Whatcanweinferfromthepassage?A．Almosteveryonethinkstheuniversityshouldusefacialrecognitionsystems.B．NostudentswillbeabsentfromclassinChinaPharmaceuticalUniversity.C．FacialrecognitiontechnologyiswidelyusedinChineseschools.D．Technologycanchangeourlifeandmakeourlifebetter.29．What’sthemainideaofthepassage?A．Facialrecognitionsystemshavemanyadvantagesanduniversitiesshouldusethem.B．Collegestudentsarehardtodealwithanduniversitiesarefindingwaystosolvetheproblem.C．ChinaPharmaceuticalUniversitystartedusingfacialrecognitiontechnologyandpeoplehavedifferentopinionsonit.D．Facialrecognitiontechnologyisimportantinhelpingstudentsstaysafeinschool.Passage8ManychildrenusetheInternettogetusefulknowledge(知识)andinformation,andtorelaxintheirfreetime.Butsomeofthemarenotusingitinagoodway.HerearesomerulestomakesureyouaresafeandhavefunontheInternet.MakerulesforInternetusewithyourparents.Forexample,whenyoucangoonline,forhowlongandwhatactivitiesyoucangoonline.Don’tgiveyourpassword(密码)toanyoneelse,andneverleakoutthefollowinginformation—yourrealname,homeaddress,age,school,phonenumberorotherpersonalinformation.Checkwithyourparentbeforegivingoutacreditcard(信用卡)number.Neversendaphotoyourselftosomeoneine-mailunlessyourparentssayit’sOK.Checkwithyourparentsbeforegoingintoachatroom.Differentchatroomshavedifferentrulesandattractdifferentkindsofpeople.Youandyourparentsmustmakesureit'sarightplaceforyou.NeveragreetomeetsomeoneyoumetontheInternetwithoutyourparent’spermission(允许).Nevermeetanyoneyoumetonlinealone.Alwaysrememberpeopleonlinemaynotbewhotheysaytheyare.Treateveryoneonlineasstrangers.Ifsomethingyouseeorreadonlinemakesyouuncomfortable,leaveitatonce.Tellityourparentsoryourteachersrightaway.Treat(对待)otherpeopleasyouliketobetreated.Neverusebadlanguage.Remember—noteverythingyoureadontheInternetistrue.30．IfyouwantatruefriendontheInternet,youcan________.A．tellthepeoplewhatyournameis B．meetthepeopleonlinealoneC．writeane-mailaboutyourself D．getyourparent’spermission31．Theunderlinephrase“leakout”inthethirdparagraphmaymean________.A．捐款 B．离开 C．泄露 D．放好32．Thispassageismainlyabout________.A．howtousecomputers B．surfingontheInternetC．informationontheinternet D．internetsafetyrules33．Ifyourparentsdon’tagree,never________.A．readanythingontheInternetB．relaxinyourfreetimeC．haveaface-to-facemeetingwithanyoneyoumetonlineD．treatotherpeopleasyouwouldliketobetreated【答案】1．C2．D3．A4．C5．C【分析】本文主要讲了什么是5G网络，5G网络能做什么以及未来怎样运用5G网络。1．细节理解题。根据“5Gmeansthefifthgeneration（第五代）mobilenetworks（网络）”可知，5G意味着第五代移动网络，故选C。2．推理判断题。分析“Suchnetworkswillbeabletohelpthepolicewiththetraffic.Theycanhelpusknowwhat’shappeninginourhomeswhenweareatwork.”可知，这样的网络将能够帮助警方处理交通问题。当我们工作时，它们可以帮助我们了解家里发生了什么。所以此处They指的是Suchnetworks，故选D。3．细节理解题。根据“Suchnetworkswillbeabletohelpthepolicewiththetraffic.Theycanhelpusknowwhat’shappeninginourhomeswhenweareatwork.Theycanevenhelptomadeitpossiblefordoctorstoperformanoperation（手术）faraway.”可知，有关智慧城市的描述写到了交通、家庭安全和医疗手术方面，故选A。4．词义猜测题。分析“Andmoreandmorecitieswilljointhisgroup:Nextyear,5Gwillbecomenational,eveninthecountryside.”可知，越来越多的城市将加入这一行列；明年，5G将在全国普及，甚至在农村。所以推测national是“全国性的”，故选C。5．推理判断题。根据下文“Inthefuture,moreinformationandmorekindsofinformationwillbetravellingacross5Gnetworks.Muchoftheinformationcouldbeaboutpersons,businessesorgovernmentorganization（政府组织）.”可知，在未来，更多和更多种类的信息将跨越5G网络，许多信息可能是关于个人、企业或政府组织的。所以主要讲人们将来如何运用5G网络，故选C。6．A7．B8．D9．B【分析】本文主要向我们介绍了四则消息。6．推理判断题。ShewonasingletitleatWTAFinalsinShenzhen,Chinalastyear.去年，她在中国深圳举行的WTA总决赛中赢得了单打冠军。根据文中“Shewonherfirstsingletitleatthe2019Women'sTennisAssociation(WTA)FinalsinShenzhen.”可知，该项正确；Shegotaprizeof3,100,000yuanforherfirstsingletitleatWTA.她作为WTA的单打冠军获得了310万元的奖金。根据“Bartytookhomearecord$4.42million(31millionyuan)prizeforthetitle”可知，该项错误；ShehasheldtheWTAWorldNo.1titleformorethanoneyear.她保持WTA世界第一的头衔已经一年多了。根据“ShehasheldtheWTAWorldNo.1titlefor15weeks”可知，该项错误；ShewasthefirstAustrianwomantowinthesingletitleatWTA.她是第一位在WTA赢得单打冠军的奥地利女性。根据文中“AustraliantennisplayerAshleighBarty,23.”可知，该项错误；故选A。7．细节理解题。根据文中“Chinahasbuilttheworld'slargesthigh-speedrailnetwork”可知，中国已经建成了世界上最大的高铁网络，故选B。8．细节理解题。根据文中“includingthirty-sixChinesecitizensandsixforeigners”可知，获奖人有36名中国公民和6名外国人，共有42人，故选D。9．细节理解题。根据文中“theeventaimstoremindpeopleoftheimportanceoffightingonlinethreatsandcyberattacks.”可知，该活动旨在提醒人们对抗网络威胁和网络攻击的重要性，故选B。【点睛】本文浅显易懂，各个小题都能在文中找到适当依据。只要认真阅读短文，注意前后联系，就能顺利完成阅读。文章所设试题主要考查细节查找，做题关键是找出原文的根据，认真核查小题和原文的异同。10．C11．C12．B13．D【分析】文章大意：短文主要讲了名叫WannaCry的病毒感染了许多国家用户的电脑，详细介绍了它的勒索方式，带来的严重后果，以及用户中毒的原因等。10．细节理解题。根据文中SinceMay12,acomputervirusnamedWannaCryhasinfected(感染)morethan300,000computersinover150countries,accordingtoReuters.可知，WannaCry是一种电脑病毒，故答案为C.11．细节理解题。根据文中itlocksallthepapersandaskstheuserformoneytounlockthem.Atfirst,itasksfor$300,butiftheuserdoesn'tsendthemoneyin72hours,thepricedoubled.可知，如果用户在72小时内不汇款，价格就会翻倍，也就是300的二倍，即600美元，故答案为C。12．推理判断题。根据文中Forexample,intheUK,thevirusleftthecountry’sNationalHealthServiceinamess.Somehospitalshadtocancelpatientappointments(预约),reportedTheTelegraph.InChina,thevirushashitthousandsofcomputers,accordingtoQihoo360.Oneofthemosthard-hitgroupsinChinawereuniversityusers.Manystudents'graduationpaperswerelocked.Theyfeltnervousandfrightened.Alsomanygasstationswereseriouslyhit,andthepaymentsystemdidn’twork.可知，作者通过列举英国和中国的例子来展示严重的结果，故答案为B。13．细节理解题。根据文中Itshowsthatmanyorganizationsdonotuseupdates(更新)fastenough.Accordingtoasurvey,nearlyhalfofthepeoplesaid,“Wearenotsatisfiedwiththewaysoftwareupdateswork.”Thebestchoiceformostusersistotakecareonlineandalwaysinstall(安装)softwareupdates.可知，我们应该小心上网和更新软件，故答案为D。14．A15．C16．D17．A【分析】本文主要讲述即将到来的5G网络将会给人们的生活带来很多便利。14．推理判断题。根据“Objectivelyspeaking,thefastest4GdownloadspeedsintheU.S.topoutatanaverageof19.42Mbps.Butbycomparison5Gpromisesgigabit（千兆）speeds”可知，本段主要强调5G的速度很快，故选A。15．词义猜测题。根据“andthatistosay,itisasignoftime,becausewithonesingletask,driving,youhavelargeamountsofdatacomingfromthevehicleitself”可知，它是一个时间的标志，因为只有一个任务，驾驶，你就有大量的数据来自于车辆本身。所以emblem的意思为“标志、象征”，故选C。16．推理判断题。根据“Augmentedrealityglasses（实境眼镜）andvirtualheadsethaven’tyetbrokenthemainstream（主流）,buttechcompaniesarejoyfullybettingthatthesedeviceswillfinallytaketheplaceofoursmartphones”可知，科技公司将面临智能手机被代替的事实，故选D。17．推理判断题。根据“Butdon’tgettooexcited.There’sstillalotofworktobedone,includingvariouswaystomakesuretheradiosplaynicelywithhardwareandinfrastructureconstructionso5Gisn’tusedonlyinbigcities”可知，我们仍有许多工