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2016年12月四级真题（第2套）CollegeEnglishTestBandFourPartⅡListeningComprehensionSectionADirections:Inthissection,youwillhearthreenewsreports.Attheendofeachnewsreport,youwillheartwoorthreequestions.Boththenewsreportandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA),B),C)andD).ThenmarkthecorrespondingletteronAnswerSheet1withasinglelinethroughthecentre.NewsReportOneNewYorkStateplanstoshutoffthethunderingwatersofNiagaraFalls—gain.Atleast,theAmericansideofthefalls.Thisonceinalifetimeeventactuallymaytakeplacetwiceinsomefolks'lives.TheNewYorkStateparkssystemwantstoturnoffthefallsontheAmericansidesometimeinthenexttwotothreeyearstoreplacetwo115-year-oldstonebridgesthatallowpedestrians,parkvehiclesandutilitiesaccesstoGoatIsland.TheAmericansideofthefallswereshutoffin1969tostudythebuildupofrockatthebaseofthefalls.Whenthathappened,peoplecamefromallovertheworldtoseethefallsturnedoff.Peoplearecuriousbynature.Theywanttoseewhat'sunderneath.Infact,thosewhofirstcametohavealookdidseesomething.Theyfoundmillionsofcoinsonthebottom.Questions1and2arebasedonthenewsreportyouhavejustheard.1.WhydoesNewYorkStatewanttoturnoffNiagaraFalls?2.WhatdidpeoplefindwhenNiagaraFallswereshutoffin1969?NewsReportTwoTheTunisiangovernmentsaidMondaythat45peoplehavebeenkilledaftergunmenattackedatownneartheborderwithLibya.TheInteriorandDefenseministriessaidthattheTunisiangovernmenthascloseditstwobordercrossingswithLibyabecauseoftheattack.TheTunisianmilitaryhassentreinforcementsandhelicopterstothearea,andauthoritieshavebeenhuntingseveralattackerswhowerestillatlarge.TheviolencecameamidincreasinginternationalconcernaboutIslamicStateextremistsinLibya.OfficialsoftheTunisiangovernmentareespeciallyworriedafterdozensoftouristswerekilledintheattacksinTunisialastyear.DefenseMinisterFarhatHorchanisaidlastweekthatGermanandAmericansecurityexpertswereexpectedtocometohelpTunisiadeviseanewelectronicvideosupervisionsystemonitsborderwithLibya.Tunisiawastargetedlastyearbythreeattacksthatleft70peopledeadandwereclaimedbyIslamicState.Questions3and4arebasedonthenewsreportyouhavejustheard.3.WhatdidtheTunisiangovernmentdoafterthegunmen'sattack?4.WhatwereGermanandAmericansecurityexpertsexpectedtodoinTunisia?NewsReportThreeThreeuniversitystudentsinSantiago,Chile,havedevelopedaplant-powereddevicetochargetheirmobilephones.Thethreeengineeringstudentsgottheideaforthedevicewhilesittingintheirschool'scourtyard.TheirinventionisasmallbiologicalcircuittheycallE-Kaia.[05:02.76]Itcapturestheenergywhichplantsproduceduringphotosynthesis—aprocessofconvertingsunlightintoenergy.Aplantusesonlyasmallpartoftheenergyproducedbythatprocess.Therestgoesintothesoil.E-Kaiacollectsthatenergy.Thedeviceplugsintothegroundandthenintoamobilephone.TheE-Kaiasolvedtwoproblemsfortheengineeringstudents.Theyneededanideaforaclassproject.Theyalsoneededanoutlettoplugintheirphones.Oneofthestudentinventors,CamilaRupcich,saysthedevicechangestheenergyreleasedfromtheplantintolow-levelpowertochargephones.TheE-Kaiaisabletofullyrechargeamobilephoneinlessthantwohours.Questions5to7arebasedonthenewsreportyouhavejustheard.5.Whatdidthethreeuniversitystudentsinvent?6.Whendidtheygettheideafortheinvention?7.Whatdoesthespeakersayabouttheinvention?SectionBDirections:Inthissection,youwillheartwolongconversations.Attheendofeachconversation,youwillhearfourquestions.Boththeconversationandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA),B),C)andD).ThenmarkthecorrespondingletteronAnswerSheet1withasinglelinethroughthecentre.ConversationOneM:Goodmorning.WhatcanIdoforyou?W:Goodmorning.CouldItalktoJeffryHardingplease?M:Speaking.W:Hello,Jeff.It'sHelen.Igotyourmessageontheansweringmachine.What'stheproblem?M:Oh,Helen.Well,it'stheGrimsbyplantagain,I'mafraid.TherobotsonLine3havegonewrong.Andthelineisatastandstill.W:Can'tyoureplacethemwiththestand-ins?M:I'mafraidnot.Thestand-insarealreadyinuseonLine6.AndtheonesfromLine6arebeingserviced.W:Whendidthishappen,Jeff?M:Well,they'vebeenmakingalowcontinuoussoundforadayortwo.Buttheyfinallywentdeadat2:30thisafternoon.W:Isee.Whatdidyoudo?Haveyoutriedthewholeplant?M:Notyet,Helen.IthoughtI'dbettergetyourOKfirst.W:OK.GetonthephonetoTom,andtrytogettheirstand-insovertonight.Wehavetobebackatfullcapacitytomorrowmorning.Isitamajorjobtorepairourrobots?M:Aboutaweek.That'swhatthemaintenanceengineersays.W:Right.Well,ifyoucangettheonesfromTom,pleaseaskTomtoinformSheffieldthathemayneedtheirstand-insincaseofemergencyduringthenextweek.M:OK.Thankyouverymuch,Helen.W:Youaremostwelcome.M:Sorrytospoilyourdayoff.W:Itdoesn'tmatter.Questions8to11arebasedontheconversationyouhavejustheard.8.Whatdidthemandobeforethetelephoneconversation?9.Whatdoesthemansayaboutline3intheGrimsbyplant?10.Whatistheman'spurposeincallingthewoman?11.Whereisthewomanatthetimeoftheconversation?ConversationTwoW:ThisisKerryBurkefromNewYorkDailyNews.I'mspeakingtoDelraySimmonds,anunemployedBrooklynmanwhomissedajobinterviewTuesdayforthebestofreasons:Hewassavingthelif