Unit3Lifeinthefuture课时作业Ⅰ.阅读理解(2020·全国新高三开学联考)Slowlybutsurely,we'removingcloserandcloserto5Gworld.Fromsmarthomesecuritytoselfdrivingcars,alltheinternet-connecteddevicesinourlifewillbeabletotalktoeachotheratlightning-fastspeedswithreduceddelay.Objectivelyspeaking,thefastest4GdownloadspeedsintheUStopoutatanaverageof19.42Mbps.Butbycomparison5Gpromisesgigabit(千兆)speeds.“5Gisoneofthoseheralds(使者),alongwithartificialintelligence,ofthiscomingdataage，”saidSteveKoenig,seniordirectorofmarketresearchfortheConsumerTechnologyAssociation.Theselfdrivingvehicleisagreatemblemofthisdataage,andthatistosay,itisasignoftime,becausewithonesingletask,driving,youhavemassiveamountsofdatacomingfromthevehicleitself,andavarietyofsensorsarecollectingalotofinformationtomodelitsenvironmentasitmoves.It'spullingindatafromothervehiclesaboutroadconditionsdownthelane.Itcouldbeweatherinformation,andalsoconnectedinfrastructure(基础设施)construction.There'slotsofdatabehindthattask,whichiswhyweneedthehighspeed.Andvirtualrealityglassesandheadsetshaven'tyetbrokenthemainstream,buttechcompaniesarejoyfullybettingthatthesedeviceswilleventuallyreplaceoursmartphones.With5G,thatcouldactuallyhappen.ThisisnotablebecausecompaniessuchasApplearereportedlydevelopingARglassestoassist—orevenreplace—smartphones.EricssonstatedatFebruary'sMobileWorldCongresshowsmartglassescouldbecomefasterandlighterwitha5Gconnection,becauseinsteadofbeingweigheddownwithcomponents,theglassescouldrelyonhardwareforprocessingpower.Butdon'tgettooexcited.There'sstillalotofworktobedoneinthemeantime,includingvarioustrialstomakesuretheradiosplaynicelywithhardwareandinfrastructureconstructionso5Gisn'tconcentratedonlyinbigcities.篇章导读：本文是一篇说明文。随着科技的不断发展，5G时代即将来临。它最大的优势就是上网速度大大加快。1．Whatisthefirstparagraphmainlyabout?A．Arightsecurityof5G.B．Thesuperspeedof5G.C．Apotentialdreamof5G.D．Thepresentworldof5G.答案：B推理判断题。首段先提出5G时代即将来临，接下来介绍5G上网下载的高速度，相比于目前的4G,5G有望达到千兆的上网速度。故首段的主要内容是介绍5G的超级速度。2．Whichofthefollowingcanreplacetheunderlinedword“emblem”inParagraph2?A．exhibitionB．explanationC．sponsorD．symbol答案：D词义猜测题。该句意为“无人驾驶车辆是这个数字时代的伟大象征”；根据后面的补充解释“itisasignoftime”也可推知画线词是“象征”的意思。3．Whatdosometechcompaniesexpectofvirtualrealityglasses?A．Theywillbeheavierthanpresentones.B．Theywillprocesspowerontheirown.C．Theywillservepeopleinsteadofsmartphones.D．Theywillbringabigfortunetotechcompanies.答案：C细节理解题。根据第三段中的“...buttechcompaniesarejoyfullybettingthatthesedeviceswilleventuallyreplaceoursmartphones”可知，科技公司预计这些装置最终取代我们的手机。因此选C。4．Whatwilltheauthortellusinthenextparagraph?A．Howtofullyexpand5Gcoverage.B．Howtoeffectivelyreduce5Gtrials.C．Howtonicelyoperate5Ghardware.D．Howtowidelyconstruct5Gbigcities.答案：A推理判断题。根据最后一段内容，尤其是“...so5Gisn'tconcentratedonlyinbigcities”可知，迎接5G时代的到来，我们还有很多的工作要做，其中就有升级其技术，让5G不仅仅是应用于大城市。故A项“扩大5G的覆盖率”符合接下来的叙述内容。(2020·南昌市重点中学高三年级段考试题)Aslifeincitiesworldwidebecomesmoreexpensive,urbandesignersareusingmoderntechnologytohelpcitizensavoidtrafficjams,andshortenthetimeneededforbuswaitingandotherthings.Techn...
