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1、2023年中考英語時事熱點(diǎn)閱讀專練 熱點(diǎn)64認(rèn)識5G及其廣泛用途 一、閱讀理解1 Therehasbeenalotofnewsrecentlyabout5Gbutwhatisthistechnology（技術(shù)）andhowmightitchangeourlives? Whatis5G? 5Gstandsforthenextstepinthedevelopmentoftechnologytoreplace4Gsystem.Earlier"G''systemsweredesignedtoimprovemobilecommunicationoperations.Thenew5Gsystem

2、isexpectedtoallowmoreuserstodomorethingsatafasterspeed.Itwillmovewellbeyondmobilenetworktechnologytoinfluencemanymoreindustriesthanother"G”systems. Whenwill5Gbeinuse? Beforewecanalluse5G,wirelesscompaniesandphonemakerswillhavetocompleteawholenewsystem.Newphonesandcommunicationequipment（設(shè)備）mustbebu

3、ilt.Chinaisexpectedtoput5Gontothemarketsoineiimein2020,whileEuropeannationsarelikelytobuildtheirsystemsmoreslowlyovertime.In（heUSA,thefirst5G-readyphonescanbefoundinthemarketinthefirsthalfofthisyear.Thefirst5GiPhone,however,isnotexpecteduntil2020.4Gphoneswillworkon5Gnetworks,butnotat5Gspeeds. Whatc

4、an5Gdo? Wirelessindustrygroupssay5Gwillhelpthedevelopmentofthefuture“smartcities".5Gisalsoexpectedtoconnectself-drivingcarsandsupportnewtechnologies.Higher5Gspeedscouldalsohelpdoctorstocommonlydoremoteoperations（遠(yuǎn)程操作）.Factoriesandbusinessescoulduse5Gtechnologytoincreaseautomation（自動化）andimprovethec

5、ollectionofinformation. Manymorekindsofdata（數(shù)據(jù)）willbetravelingacross5Gnetworks.Muchofthedatacouldincludepersonaldetailsaboutpeople,businessesorgovernmentorganizations.Theincreaseddataflowwouldgiveinternetattackersalotmorepossibilitiestostealandmisusedata.What'smore,thewideruseofa5Gwirelessnetworkme

6、ansanybreakdownofthesystemwouldhavemoreseriousresults.Suchdifficultiescouldinfluencepublicsafetyaswellasworldeconomicactivity.Forexample,afailureduringadoctor'sremotelyguidedoperationcouldleadtothedeathofapatient.Oranetworkbreakdowncouldcauseself-drivingcarstocrash. 30.A.future B.past C.old 31.A

7、.offer B.offering C.tooffer 32.A.talk B.tell C.say 33.A.fast B.faster C.fastest 34.A.how B.why C.what 35.A.or B.to C.and 36.A.possible B.impossible C.probably 37.A.singers B.doctors C.engineers 38.A.safely B.carefully C.quickly 三、短文漢語提示填空 Chinaisbuilding5Gnetwork.Shanghaivic

8、e-mayor（副市長）WuQingmadethefirst5Gv39.callonaHuaweiMateXphoneonMarch30,CGTNreported.Shanghaiisthefirstc40,inChinatostartatestrunofSGnetworks. About100t4l.fasterthan4Gnetworks,5Gwillhelppeopledownloadthingfaster（hanever.Itwillalsobeusedino42.areas. Self-divingcanmaybeoneoftheb43.breakthrough（突破）.Toda

9、y'sself~~rivingtestcarshaveonep44..Whenthecar"sees”something,its45.thisinformationtoadata（數(shù)據(jù)）centertowaitfortheinstructions（指令）. However,thecarcanrunintothethingsifitd46.receiveinstructionsintime.5Gnetworkswillmakethetimethistakesshorterandthecarswillbesafer.CNNnoted. 5Gcouldalsopowertheinternetof

10、things（loT物聯(lián)網(wǎng)）.Thismeansverybigonlinenetworkthatconnect（連換）everythingande47..Veryfastinternetspeedsarethekeytorealizingit.Forexample,withloT,yourf48.willordereggsonlinewhenitnotices（hattherearenoeggsleftinside. 2023年中考英語時事熱點(diǎn)閱讀專練 熱點(diǎn)64認(rèn)識5G及其廣泛用途 一、閱讀理解1 Therehasbeenalotofnewsrecentlyabout5Gbutwhat

11、isthistechnology（技術(shù)）andhowmightitchangeourlives? Whatis5G? 5Gstandsforthenextstepinthedevelopmentoftechnologytoreplace4Gsystem.Earlier"G"systemsweredesignedtoimprovemobilecommunicationoperations.Thenew5Gsystemisexpectedtoallowmoreuserstodomorethingsatafasterspeed.Itwillmovewellbeyondmobilenetworkt

12、echnologytoinfluencemanymoreindustriesthanother"G"systems. Whenwill5Gbeinuse? Beforewecanalluse5G,wirelesscompaniesandphonemakerswillhavetocompleteawholenewsystem.Newphonesandcommunicationequipment（設(shè)備）mustbebuilt.Chinaisexpectedtoput5Gontothemarketsometimein2020,whileEuropeannationsarelikelytobuil

13、dlheirsystemsmoreslowlyovertime.IntheUSA,thefirst5G-readyphonescanbefoundinthemarketinthefirsthalfofthisyear.Thefirst5GiPhone,however,isnotexpecteduntil2020.4Gphoneswillworkon5Gnetworks,butnotat5Gspeeds. Whatcan5Gdo? Wirelessindustrygroupssay5Gwillhelpthedevelopmentofthefuture“smartcities".5Gisals

14、oexpectedtoconnectself-drivingcarsandsupportnewtechnologies.Higher5Gspeedscouldalsohelpdoctorstocommonlydoremoteoperations（遠(yuǎn)程操作）.Factoriesandbusinessescoulduse5Gtechnologytoincreaseautomation（自動化）andimprovethecollectionofinformation. Manymorekindsofdata（數(shù)據(jù)）willbetravelingacross5Gnetworks.Muchofthed

15、atacouldincludepersonaldetailsaboutpeople,businessesorgovernmentorganizations.Theincreaseddataflowwouldgiveinternetattackersalotmorepossibilitiestostealandmisusedata.What'smore,thewideruseofa5Gwirelessnetworkmeansanybreakdownofthesystemwouldhavemoreseriousresults.Suchdifficultiescouldinfluencepublic

16、safetyaswellasworldeconomicactivity.Forexample,afailureduringadoctor'sremotelyguidedoperationcouldleadtothedeathofapatient.Oranetworkbreakdowncouldcauseself-drivingcarstocrash. 1. Thewritingpurposeofthepassageisto. A. introduce"smartcities"B.introducethenew5GtechnologyC.tellus5Gtechnologyisnotsafe

17、D.encouragemorepeopletobuy5Gphones 2. Whichofthefollowingexpressionscanbethesubtitleofparagraph5? A. Howwill5Gsystemschangetheworld? B. Howwillthedatabeused? C. Whatarethesafetyrisks? D. Whatkindofdatacannetworkscollect? 3. WhichofthefollowingexpressionsisNotTrueaccordingtothispassage? A. Use

18、rscandomanythingsatafasterspeedon5Gnetworks. B. 5Gnetworksdonotsupport4Gphones. C. 5Gtechnologycanbeusedtocollectalargeamountofinformation. D. 5GdevelopsmoreslowlyinEuropeancountriesthaninChina. 4. Whatcanwcinfcr（推斷）fromthepassage? A. Thenetworkbreakdownmayleadtosomeseriousresults. B. Peopleca

19、nbuythefirst5GPhonein2020inAmerica. C. Thenew5Gsystemwillinfluencepublicsafetyaswellasworldeconomicactivity. D. 5Gtechnologymayimprovepeople'sself-drivingexperience. 【答案】BCBD【解析】本文圍繞“什么是5G；何時開始使用：能做什么；安全風(fēng)險是什么"等四方面介紹5G技術(shù)。 1. 主旨大意題。根據(jù)第一*段"Therehasbeenalotofnewsrecentlyabout5G,butwhatisthistechnolo

20、gyandhowmightitchangeourlivcs"5G這項(xiàng)技術(shù)是什么？它將如何改變我們的生活；可知，這篇文章的寫作目的是介紹新的5G技術(shù)；故選B。 2. 推理判斷題。根據(jù)第五段u...Suchdifficultiescouldinfluencepublicsafetyaswellasworldeconomic"數(shù)據(jù)可能被竊取和濫用、系統(tǒng)的任何故障都將產(chǎn)生更嚴(yán)重的后果，這些困難可能影響公共安全和世界經(jīng)濟(jì)；可知，本段講述5G技術(shù)面臨的安全問題；故選C。 3. 推理判斷題。根據(jù)第三段“4Gphoneswillworkon5Gnetworks,butnotat5Gspeeds"可知，4G

21、手機(jī)將在5G網(wǎng)絡(luò)上運(yùn)行，選項(xiàng)B表述錯誤；故選B。 4. 推理判斷題。根據(jù)第四段"5Gisalsoexpectedtoconnectself-drivingcarsandsupportnewtechnologies”5G還將連接自動駕駛汽車并支持新技術(shù)；可知，5G技術(shù)可以改善人們的自駕體驗(yàn)；故選D。 2 Chinaisrunningaheadin5G.InMarch,2019,theShanghaiHongqiaoRailwayStationbecameworld'sfirst"5Grailwaystation".Now,ittakesonly20secondstodownloadalon

22、gmoviethere. Wearemovingcloserandclosertothe5Gworld.However,thenewtechnologyisstillstrangetomostofus.Whalis5G,afterall?Alfirst,5Gisfast.5Gwillbemuchfasterthantoday's4Gnetworks! Thefirst5Gmodem（貓，調(diào)制解調(diào)器）oftheITcompanyQualcommsupportsspeedsof叩to5Gigabytes（千?兆字節(jié)）persecond.Mostofushaveneverexperienceda

23、nythingclosetothatspeed.Andweareonlytalkingaboutthefirstgeneration（—*代）of5Gmodems.Futuremodelsarelikelytobeevenfaster. But5Gisnotallaboutspeed.Haveyoueverbeentoalargeeventwhereyourdata（數(shù)據(jù)）connectionsloweddown?Thatisbecause4Gnetworkscanonlysupportacertainnumberofdevices（設(shè)置）persquaremeter.5Gnetworksw

24、illbeabletodomuchbetter.Theycansupportuptoamilliondevicespersquarekilometer. Now.youbegintounderstandwhy5Gisahugechangeover4G.Thetechnologyisnotjustforthesmartphones.Ithasastronginfluence（影響）oneveryconnecteddevice.With5G,self-drivingcarswillbeabletocommunicatewiththeworldaround（hemasquicklyaspossib

25、le.Wearables,Pcsandsmarthomedeviceswillbeabletoimproveaswell. Areyoulookingforwardtothat5Gworldnow? 5. Eachofthefollowingismentionedabout5GEXCEPT. A. thefirstplacewhere5Gisusedintheworldthespeedofusing5Gtodownload B. thewayof5GspreadingParagraph4showstheadvantagesof5Gby. A. usingdifferentadvice

26、comparing5Gwith4G B. somedataof5GnetworksHowmanyfieldsofusing5Gdocsthepassagetclius? A. Three.B.Four.C.FiveFromthepassage,whichofthefollowingisNOTTRUE? A. 5Gtechnologyiscloserandclosertous. B. 5Gself-drivingcarswillbecheaperthananyothercars. C. ITcompanyQualcommproducedthefirstgenerationof5Gmod

27、ems. 6. What'sthebesttitleforthepassage? A. What's5G?B.Howis5Gused?C.Is5Ggoodorbad? 【答案】CBCBA【解析】短文通過與4G網(wǎng)絡(luò)作對比，介紹了5G網(wǎng)絡(luò)的優(yōu)勢及5G網(wǎng)絡(luò)的一些應(yīng)用領(lǐng)域：智能手機(jī)、自動駕駛汽車、可穿戴設(shè)備、個人電腦和智能家庭設(shè)備等。 5. 推理判斷題。根據(jù)第一段“theShanghaiHongqiaoRailwayStationbecameworld'sfirst"5Grailwaystation"介紹全球首個使用5G的地方上海虹橋火車站；"Now,ittakesonly20secondst

28、odownloadalongmoviethere"介紹使用5G下載的速度；文中沒有介紹5G傳播。故選C。 6. 推理判斷題。根據(jù)第四段可知對比4G和5G網(wǎng)絡(luò)每平方米支持設(shè)備的數(shù)量，說明5G的優(yōu)勢。故選B。 7. 推理判斷題。根據(jù)第五段"Thetechnologyisnotjustforthesmartphones.Ithasastronginfluenceoneveryconnecteddevice.With5Gself-drivingcarswillbeabletocommunicatewiththeworldaroundthemasquicklyaspossible.Wearables

29、,Pcsandsmarthomedeviceswillbeabletoimproveaswell."這項(xiàng)技術(shù)適用于智能手機(jī)、自動駕駛汽車、可穿戴設(shè)備、個人電腦和智能家庭設(shè)備等五個五方面。故選C。 8. 推理判斷題。第二段“Wearemovingcloserandclosertothe5G\vorld,,可知，5G世界離我們越來越近；第三段“Thefirst5GmodemoftheITcompanyQualcommsupportsspeedsofupto5Gigabytespersecond”可矢U,IT公司Qualcomm生產(chǎn)了第一代5G調(diào)制解調(diào)器：文中沒有提及選項(xiàng)B的信息。故選B。 9.

30、 最佳標(biāo)題。短文主要通過與4G網(wǎng)絡(luò)作對比，介紹了5G網(wǎng)絡(luò)的優(yōu)勢及5G網(wǎng)絡(luò)的?些應(yīng)用領(lǐng)域，所以短文的最佳標(biāo)題應(yīng)該是“什么是5G?”。故選A。 3 Chinesecompaniesleadinglobal5GpatentapplicationswithHuaweitaking(hecrown,according(oareportbyIPIytics,anauthorizedpatentdatacompany.ThreecompaniesfromChinawereincludedinthetop10listof5GStandards-EssentialPatents(SEPs)familyown

31、ers,Huaweirankedfirst.ZTECorpandChinaAcademyofTelecommunicationsTechnology(CATT)grabbedfifthandninthplaces. Chinesecompaniestoppedthelistwithmost5GSEPsapplicationsincommunicationsystemsbytheendofApril2019,accountingfbr34percentoftheworld'stotal.ChinesetechgiantHuaweihastakenaleadingrolebyowning15pe

32、rcentofSEPs,accordingtothereport“WhoIsLeadingthe5GPatentRace?" SGSEPsarepatentsthatanycompanywillhavetousewhencarryingout5Gandnoonecanavoidthem. Differentfrom3Gand4Gtechnologies,5Gtechnologywillinfluencevariousindustriesandencouragetheappearanceofmanynewproducts,servicesandindustries. Theautomoti

33、vesectorwillmostlikelybeoneofthefirstindustriestodependon5G,whichwillconnectvehiclestoothervehicles,roadsides,trafficlightsbuildingsandtheInternetaccordingtothereport. "Itis5Gthatisgoingtobeahugejumpforwardfbrcommunicationsystemsbecauseonlywith5G'shigherbandwidthcananumberofapplicationsbemoreadvanc

34、edandusedbymostconsumers,"saidNicolePeng,seniordirectorofthemarketresearchcompanyCanalys. As5Gtechnologyhascombinedvariousindustriesandtechnologies,thenumberof5GSEPsrosetomorethan60,0(X)globallybytheendofApril2019,thereportsaid. 10. WhichonewasNOTonthetop10listof5GSEPs? A. Canalys.B.Huawei.C.ZTEC

35、orp.D.CATT. 11. Whatisthemainideaofthefirsttwoparagraphs? A. NocompaniescanavoidSGSEPs.B.IPIytiesisanimportantdatacompany. C.Chinesecompaniesleadthe5Gpatentrace.D.Chinaowned34%oftheworld'sSGSEPsapplications. 12. WhatdoesNicolePengthinkof5G? A. Variousindustrieswillbehelpfulfbr5Galot.B.Manyappli

36、cationswillmake5Gmoreadvanced. C.5Gwillbeusedbymanymostadvancedconsumers.D.5Gwillmakegreatprogressincommunicationsystems. 13. WhichofthefollowingisTRUEaccordingtothepassage? A. 5Gwillbefirstusedbytheindustiyoftheautomotivesector. B. Variousindustriesandfarmingwillbemostlyinfluencedby5G. C. 5Gwi

37、llencouragemanynewproducts,services,andindustriestoappear. D. More(han6.000SGSEPshadbeenusedbytheendofApril2019. 【答案】ACDC【解析】本文是一篇說明文。文章介紹了中國公司在全球5G專利應(yīng)用中處于領(lǐng)先地位，其中華為摘得桂冠，并簡單介紹了5G技術(shù)的發(fā)展及其對其他領(lǐng)域產(chǎn)生的影響。 7. 細(xì)節(jié)理解題。根據(jù)"ThreecompaniesfromChinawereincludedinthetop10listof5GStandards-EssentialPatents(SEPs)fami

38、lyowners,Huaweirankedfirst.ZTECorpandChinaAcademyofTelecommunicationsTechnology(CATT)grabbedfifthandninthplaces.,,可知，進(jìn)入5G核心專利榜單的有華為、中興(ZTECorp)和中國電信科技研究院（CATT）o故選A。 8. 主旨大意題。根據(jù)"Chinesecompaniesleadinglobal5GpatentapplicationswithHuaweitakingthecrown"可知，文章前兩段主要講述以華為為首的中國企業(yè)在全球5G專利應(yīng)用中占據(jù)領(lǐng)先地位。故選C。 9. 推

39、理判斷題。根據(jù)Ttis5Gthatisgoingtobeahugejumpforwardfbrcommunicationsystems,,可知，對于通信系統(tǒng)來說，5G將是一個巨大飛躍，也就是說他認(rèn)為5G將在通信系統(tǒng)方面取得重大突破。故選D。 10. 細(xì)節(jié)理解題。根據(jù)^Differentfrom3Gand4Gtechnologies,5Gtechnologywillinfluencevariousindustriesandencouragetheappearanceofmanynewproducts,servicesandindustries?'可知，5G技術(shù)將推動許多新產(chǎn)品、服務(wù)和行業(yè)的出現(xiàn)

40、。故選C。 4 Thechangesinourlivesusing5G（使用5G給我們生活帶來的變化） Doyouknow5G?Ilisthefifthgeneration（代）ofmobilenetworktechnology.Thesenewnetworksarecoming. Chinajustissuedcommerciallicenses（發(fā)放商用牌照）fbr5GonJune6.ThismeansthatChina'stclccomcompaniesweresoonabletooffer5Gnetworksfbrmobilephoneusers. Eachmobilenet

41、workgenerationisfasterandmorepowerfulthantheonebeforeit.IGletustalktoeachother.2Gletussendmessages.3GgaveusdataandtheInternet.And4Gmadeallofthesethingsfaster.What'sspecialabout5G? 5Ghasaveryshortdelaybetweensendingandreceivinginformation.Now,4Gtakesabout100to200milliseconds（毫秒）tosendandreceivedata.

42、Bu（5Gwillgetitdownto1millisecondorless—thisisalmostreal-time. ThisbigchangewillnotonlymakeourmobileInternetfaster,butalsodeeplychangeourlives.Readontofindouthow. 5G+entertainment（娛樂） 5Gnetworksareabout1（X）timesfasterthan4GThismeansyoucandownloadamovieinsecondsusing5G. Also,virtualrcality（VR）game

43、swillbecomemorepopularwith5GTheshortdelayof5Gwillmakethegamesfeelevenmorereal. 5G+transportation 5Gwillalsobringussaferself-drivingcars.Thesecarscansendsignals（信號）toeachother.Theyalsotalktotrafficlightsandroadsensors（傳感器）.5Gwillallowcarstoreactevenfasterthanhumandrivers. 5G+smarthomes 5Galsomake

44、stheInternetofthingspossible.InternetofthingsisalargenetworkthatconnectseverythingtotheInternet.Smarthomesarepartofit. Forexample,yourtoastercanautomatically（自動地）startmakingbreakfastafteryouralarmrings.Andifitssensorfeelstheairbecomingdry,asmartsprinklercouldwateryourplantsbyitself. 11. Whathappen

45、edonthesixthdayofJuneaccordingtothepassage? A. 5GcameintouseChinaissuedcommerciallicenses. B. Mobilephoneuserscouldtalktoeachother. C. 5Gdelayedbetweensendingandreceivinginformation. 12. Whatdoestheunderlinedword"delay"inParagraph4probablymeaninChinese? A. 延時B.暫停C,斷開D.卡頓5Gwillchangepeople'slive

46、sinmanywaysEXCEPT. A. entertainmentB.IransporUitionC.smarthomesD.healthWhichofthefollowingisNOTtrueaccordingtothepassage? A. Wecandownloadamoviefasterwith5G. B. Humandriverscansendsignalsattrafficlights. C. Theplantscanwaterthemselvesbyasmartsprinklerwith5G. D. 5Gisfasterandmorepowerfulthan4GWh

47、at'sthemainideaofthepassage? A. Mobilephoneuserscanuse5Gnetworks. B. Eachmobilenetworkgenerationhastheirownadvantages. C. 5Gwillchangeourlivesinmanyways. D. 5Gwillbringussaferself-drivingcars. 【答案】BADBC【解析】本文主要講述了第五代通訊技術(shù)會從許多方面改變?nèi)藗兊纳睢? 14, 細(xì)節(jié)理解題。根據(jù)第二段中"Chinajustissuedcommerciallicensesfor5GonJu

48、ne64.”可知,6月6日,中國剛剛發(fā)放了5G的商用牌照。故選B。 15. 詞義猜測題。根據(jù)畫線詞所在卜文“Now,4Gtakesabout100to200millisecondstosendandreceivedata.But5Gwillgetitdownto1millisecondorless."可知，5G的速度比4G快了很多,發(fā)送和接受消息花費(fèi)的時間更短，由此可知"delay”的意思是“延時”。故選A。 16. 細(xì)節(jié)理解題。根據(jù)文中4t5G+entertainment；5G+transportation；5G+smarthomes"可知，5G會在娛樂、交通運(yùn)輸、智能家居這三方面改變?nèi)?/p>

49、們的生活，但是不包括健康方面。故選D。 17. 細(xì)節(jié)理解題。根據(jù)倒數(shù)第三段中“5Gwillalsobringussaferself-drivingcars.Thesecarscansendsignalstoeachother/'可知自動駕駛汽車可以互相發(fā)送信號，并不是人類司機(jī)，B項(xiàng)錯誤。故選B。 18. 主旨大意題。根據(jù)第五段中"ThisbigchangewillnotonlymakeourmobileInternetfaster,butalsodeeplychangeourlives."并結(jié)合全文可知，文章主要講述了5G會在許多方面改變我們的生活。故選C。 5 Topic 4G

50、5G Speed 4Gtakesabout100to200milliseconds（毫秒）tosendandreceiveinformation. 5Gwillhelpcutdownthetimeto1milli-secondorless. Amusement WecanjustexperiencetheVRgamesinspecialplacesonceinawhile. VRgameswillbecomemorecommonandexcitingwith5G. Traffic Mostpeoplecan'ttrustself-drivingin4Gbecauseofunex

51、pectedproblems. 5Gwillmakeself-drivingcarshavemuchfasterreaction（反應(yīng)）than4G. SmartHomes JustasmallpartofthehousehasBlue-toothtoconnectin4G Insmarthemes,yourhomemachinescanstartworkingaheadoftime. 5Gwillnotonlymakeournetworkfaster,butchangemanythingsinourlives.Althoughnot everyonecanuse5Gnow,Chi

52、naistryingitsbesttoleteveryoneuse5Gassoonaspossible. 19. Whendidpeopleuse5GinChina? C.InJune,2020. D.Doesn'tknow. A. OnMay30th,2019.B.InJune,2019. 20. Howfasteris5Gthan4G? B.5Gisabout10timesfaster. A. 5Gisabout100-200timesfaster. C.4Gisasfastas5G. D. Thepassagedoesn'tmentionit. 21.Youcan

53、 A.trustself-drivingin4Gtotally C.useBluetoothtoconnecteverythingin4G B. useself-drivingcarsmoresafelyin5G D. makeyourhomemachinesworkaheadoflimein4GWhichofthefollowingisTRUE? A. HuaweihelpedtheBBCuse5Gforthefirsttimeintheworld! B. 5GcannotmakeVRgamesmoreexcitingthan4G. C. 5Gwillchangeeve

54、rythinginourlives. D. Everyonecanuse5GinChinanow. 22. ThispassageisprobablyfromA.anartbook A.anartbook B.asciencefiction atechnologymagazineD.asportsnewspaper 【答案】BABAC【解析】本文講述了2019年5月30日上午，華為幫助BBC在世界上第一次使用5G技術(shù)進(jìn)行新聞報道。中國從2019年6月開始使用5G。作者以表格的形式，對5G技術(shù)和4G技術(shù)的區(qū)別加以闡述。 13. 細(xì)節(jié)理解題。根據(jù)第一段第3句"Chinabegan

55、touse5GinJune,2O19.,,i>J知，中國人在2019年6月開始使用5G。故選B。 14. 推理判斷題。根據(jù)表格第一行"Speed"中"4Gtakesabout100to200milliseconds（毫秒）cosendandreceiveinfonnation.5Gwillhelpcutdownthetimeto1milli-sec"可知，4G發(fā)送和接收信息大約需要10（）到200毫秒，而5G將只需要1毫秒，由此可知，5G比4G快大約100-200倍，故選A。 15. 細(xì)節(jié)理解題。根據(jù)表格第4行中“5Gwillmakeself-drivingcarshavemuchfast

56、errcaction（反應(yīng)）than4G."可知，您可以在5G中更安全地使用自動駕駛汽車；故選B。 16. 細(xì)節(jié)理解題。根據(jù)第2段第1和2句"OnthemorningofMay30th,2019,HuaweihelpedtheBBCuse5Gtoreportnews.Itwasthefirsttimethat5Gwastriedintheworld!"可知,華為幫助英國廣播公司在世界上第一次使用5G；由此可知A正確，故選A。 17. 推理判斷題。本文主要講述了5G技術(shù)和4G的區(qū)別，由此可知，本文可能來自科技雜志；故選C。 1. Thewritingpurposeofthepassagei

57、sto. A.introduce"smartcities"B.introducethenew5GtechnologyC.tellus5GtechnologyisnotsafeD.encouragemorepeopletobuy5Gphones 2. Whichofthefollowingexpressionscanbethesubtitleofparagraph5? A. Howwill5Gsystemschangetheworld? B. Howwillthedatabeused? C. Whatarethesafetyrisks? D. Whatkindofdatacannet

58、workscollect? 3. WhichofthefollowingexpressionsisNotTrueaccordingtothispassage? A. Userscandomanythingsatafasterspeedon5Gnetworks. B. 5Gnetworksdonotsupport4Gphones. C. 5Gtechnologycanbeusedtocollectalargeamountofinformation. D. 5GdevelopsmoreslowlyinEuropeancountriesthaninChina. 4. Whatcanwci

59、nfcr（推斷）fromthepassage? A. Thenetworkbreakdownmayleadtosomeseriousresults. B. Peoplecanbuythefirst5GPhonein2020inAmerica. C. Thenew5Gsystemwillinfluencepublicsafetyaswellasworldeconomicactivity. D. 5Gtechnologymayimprovepeople'sself^drivingexperience. 2 Chinaisrunningaheadin5G.InMarch.2019,the

60、ShanghaiHongqiaoRailwayStationbecameworld'sfirst"5Grailwaystation".Now,ittakesonly20secondstodownloadalongmoviethere. Wearemovingcloserandclosertothe5Gworld.However,thenewtechnologyisstillstrangetomostofus.Whatis5G,afterall?Atfirst,5Gisfast.5Gwillbemuchfasterthantoday's4Gnetworks! Thefirst5Gmodem（

61、貓,調(diào)制解調(diào)器）oftheITcompanyQualcommsupportsspeedsofupto5Gigabytes（千,兆字節(jié)）persecond.Mostofushaveneverexperiencedanythingclosetothatspeed.Andweareonlytalkingaboutthefirstgeneration（—*代）of5Gmodems.Futuremodelsarelikelytobeevenfaster. But5Gisnotallaboutspeed.Haveyoueverbeentoalargeeventwhereyourdata（數(shù)據(jù)）conne

62、ctionsloweddown?Thatisbecause4Gnetworkscanonlysupportacertainnumberofdevices（設(shè)置）persquaremeter.5Gnetworkswillbeabletodomuchbetter.Theycansupportuptoamilliondevicespersquarekilometer. Oneafteranother,telecommunicationsgiantssuchasHuawei,SamsungandQualcommhaveannouncedtheirlatestfifthgeneration（5G）pr

63、oductswithHuawei'sMateXandSamsung'sGalaxyFoldattractingmosteyeballs. Thetelecomgiantshavealsoannouccdthat5Gtechnologywouldbewidelyusedby2020,causingsomeexpertstosaythe"5Gepoch"iscoming.Yet,whenreportingabout5G,manyreportershavedescribeditasa"muchfastef,technologythan4Gwithoutmentioninganyofitsother

64、advantages.Asaresult,thecommonpublicideaabout5Gisthattheycould"downloadahugemoviewithinonesecond,,.Beyondthat,mostpeopleknownothingabout5G. Actually,5Gtechnologyhasmanymoreadvantagesthan4Gapartfromspeed.Accordingto3GPP,aninternationalstandardizationorganization,5Gtechnologycanbeusedforatleastthreep

65、urposes—forconnectingeverything,reliability（川靠性）ofconnections,andremovingdelays. “Connectingeverything,,isapropersloganfor5Gtechnology,withoutwhichtheInternetofThingswouldbeimpossible.Forexample,self-drivingcarscontainseveralkindsofsensors,suchasradar,computervision,andGPStoidentifydrivingroutes,ob

66、staclesandroadsigns.5Gtechnologywilllinkalltheelementsofatransportationsystem,suchas（rafflelights,CCTVcamerasand,ofcourse,carstobuildupperfectcoordinationsotheycanavoidobstaclesandmoveondrivingroutes,whichwillhelpstrengthenself-drivingtechnology. Reliabilityofconnectionsisanotherkeycharacteristicof5Gtechnology,whoseusecanbespreadtootherfieldswherehighsafetystandardsarerequired.Forexample,incertainsurgeries（夕卜科手術(shù)），doctorsputnano-robotsinsideapatient'sbodyandhavetokeepconstantcontrolovertherobots