歷年英語四級真題練習及答案_第1頁
歷年英語四級真題練習及答案_第2頁
歷年英語四級真題練習及答案_第3頁
歷年英語四級真題練習及答案_第4頁
歷年英語四級真題練習及答案_第5頁
已閱讀5頁,還剩12頁未讀 繼續免費閱讀

下載本文檔

版權說明:本文檔由用戶提供并上傳,收益歸屬內容提供方,若內容存在侵權,請進行舉報或認領

文檔簡介

Questions1and2arebasedonthenewsreportyouhavejusttheA)ItwasgoingtobeC)ItwasdangeroustoliveB)HecouldnolongerpaytheD)HehadsoldittotheroyalA)Astorm。C)AforestB)Astrike。D)ATerroristQuestions3and4arebasedonthenewsreportyouhavejustheard。A)Theylostcontactwiththeemergencydepartment。B)TheywereinjuredbysuddenlyfallingC)TheysentcallsforhelpviaaportableD)TheyweretrappedinanundergroundA)TheyprovidedtheminerwithfoodandB)TheysentsuppliestokeeptheminersC)TheyreleasedthedetailsoftheD)TheytriedhardtorepairtheQuestion5to7arebasedonthenewsreportyouhavejustheard。A)RaisepostageC)Closesomeofitspostoffices。B)ImproveitsD)RedesigndeliveryA)ClosingofficesonC)ComputerizingmailsortingB)ShorteningbusinessD)StoppingmaildeliveryonSaturdays。A)AlotofcontroversywillariseB)TaxpayerswillbeverypleasedC)ManypeoplewillbegintoplainD)ManypostofficestaffwilllosetheirjobsDirections:Inthissection,youwillheartwolongconversations.Attheendofwillhearfourquestions。BoththeconversationandthequestionswillbespokenonlyAfteryouhearayoumustchoosethebestanswerfromfourchoicemarkedAB),C)andmarkthecorrespondingletteranAnswersheet1withasinglelinethoughtheQuestion8to11arebasedontheconversationyouhavejustheard。A)HewilllosepartofhisC)Hewillbegivenawarning。B)HewillgothroughD)Heisgogoodtermswithhisworkmates。A)HeisanexperiencedpressC)HeisalwaysonB)HeistrustworthyD)Heisgogoodtermswithhisworkmates。10。A)SheisatradeunionC)SheisbetterathandingsuchB)SheisaseniormanageroftheD)Sheisinchargeofpublic11。A)HeisalwaystryingtostirupB)HeisskilledandC)HeisveryclosetotheD)HeisalwaysplainingaboutlowQuestion12to15arebasedontheconversationyouhavejustheard。12。A)Open。C)Selfish。B)Reserved。D)Friendly。13。A)TheyreadaC)TheystayB)TheytalkabouttheweatherD)Theychatwithfellowpassengers。14。A)Shewasunwillingtomakefriendswithworkmates。B)Shewasneverinvitedtoacolleague’shome。C)ShewaseagertovisitanEnglishD)Shewasalwaystreatedasa15.A)HousearemuchmoreC)TheywantagardenoftheirB)TheywanttohavemoreD)Housesprovidemoreprivacy。Directions:Inthissection,youwillhearthreepassages.Attheendofeachwillhearthreeorfourquestions.Boththepassageandthequestionswillbespokenonlyonce.AfteryouhearamustchoosethebestanswerfromthefourchoicesmarkedandD)。ThenmarkthecorrespondingletteronAnswerSheet1withasinglelinethroughtheQuestions16to18arebasedonthepassageyouhavejustheard。16.A)Theywillautomaticallybegivenhiringpriority。B)Theydon’thavetogothroughjobinterviews。C)TheyarelikelytogetmuchhigherD)Theydon’thavemuchofjobs。17.A)VisittheschoolcareersC)LookatschoolbulletinB)AsktheirprofessorsforD)Gothroughcampusnewspapers。18.A)Providingstudentswithinformationaboutthelibrary。B)Helpingstudentsarrangeappointmentswithlibrarians。C)Supervisingstudyspacestoensureaquietatmosphere。D)Helpingstudentsfindthebooksandjournalstheyneed。Questions19to21arebasedonthepassageyouhavejustheard。19.A)IttastesC)ItiseasiertoB)ItmaybesoldatahigherD)Itcanbettersurviveextreme20.A)ItcangrowindrierC)ItwillreplacegreenteaoneB)ItisimmunetovariousD)Itishealthierthangreen21.A)ItdoesnothaveastableB)Ithasmadeteafarmers’lifeeasier。C)ItdoesnotbringthepromisedhealthD)IthasbeenwellreceivedbymanyteaQuestions22to25arebasedonthepassageyouhavejustheard。22。A)TheycaremoreaboutB)TheydecoratetheirhomesC)TheypreferuniqueobjectsofhighD)Theyneeddecorationstoshowtheir23。A)TheymadegreatcontributionstoB)TheycouldonlytrytocreateatC)TheywereproudoftheirD)Theyfocusedonthequalityoftheir24。A)IdentifyfakeC)Designhandicraftsthemselves。B)MakewiseD)Learntheimportanceofcreation。25。A)ToattractforeignC)ToarousepublicinterestinB)TopreservethetraditionalD)ToboostthelocalDirections:Inthissection,thereisapassagewithtenblanks。Youarerequiredtoselectonewordforeachblankfromalistofchoicesgiveninawordbankfollowingthepassage.ReadthepassagethroughcarefullybeforemakingyourEachchoiceinthebankisidentifiedbyaletter。PleasemarkthecorrespondingletterforeachitemonAnswerSheet2withasinglelinethroughthecentre。Youmaynotuseanyofthewordsinthebankmorethanonce。Manymenandwomenhavelongboughtintotheideathatthereare“male”and“female”brains,believingthatexplainsjustabouteverydifferencebetweenthesexes.Anewstudy26thatquestioningwhetherbrainsreallycanbedistinguishedbyIntheTelAvivUniversityresearchers27forsexdifferencesthroughouttheentirehumanbrainAndwhatdidtheyfind?NotRatherthanofferevidencefor28brainsas“male”showsthatbrainsfallintoawiderange,withmostpeoplefallingrightintheDaphnaJoel,wholedthesaidherresearchfoundthatwhiletherearesomegenderbased29,manydifferenttypesofbraincan’talwaysbedistinguishedbygender。Whilethe“average”maleand“average”femalebrainswere30different,youcouldn’ttellitbylookingatindividualbrainOnlyasmall31ofpeoplehad“all-male”or“all-female”characteristics。LarryanAmericanneuroscientist(神經科學家),saidthestudyisanimportantadditiontoagrowingbodyofresearchquestioning32beliefsaboutgenderandbrainfunction。Buthecautionedagainstconcludingfromthisstudythatallbrainsarethe33ofgender。“There’samountainofevidence34theimportanceofsexinfluencesatalllevelsofbrainfunction,”hetoldTheSeattleIfanything,hesaid,thestudy35thatgenderplaysaveryimportantroleinthewhenwearenotclearexactlyA)abnormalI)regardlessB)appliedJ)searchedC)brieflyK)similaritiesD)categorizingL)slightlyE)challengesM)suggestsF)figureN)tastesG)percentageO)traditionalH)provingDirections:InthisyouaregongingtoreadapassagewithtenstatementsattachedtoEachstatementcontainsinformationgiveninoneoftheIdentifytheparagraphfromwhichtheinformationisderived。Youmaychooseaparagraphmorethanonce.EachparagraphismarkedwithaAnswerthequestionsbymarkingthecorrespondingletteronAnswersheetCanBurglarsJamYourwirelessSecuritySystem?[A]AnyproductthatpromisestoprotectyourhomedeservescarefulSoitisn’tsurprisingthatyou’llfindplentyofstrongopinionaboutthepotentialvulnerabilitiesofpopularhome-security[B]ThemostlikelytypeofbyfaristheunsophisticatedcrimeofusuallyinvolvingabrokenorsomeforcedAordingtotheFBI,crimesliketheseaountedforroughlytwo-thirdsofallhouseholdburglariesintheUSinThewidemajorityoftherestwereunforcedentriesthatresultedfromsomethinglikeawindowbeingleftTheFBIdoesn’teventrackthosestatistics。[C]Oneofthemaintheoreticalhome-securityconcernsiswhetherornotagivensystemisvulnerabletobeingblockedfromworkingWithwiredthefearisthataburglar(入室盜竊)mightbeabletoshutyoursystemdownsimplybycuttingtherightWithawirelessyoustickbattery-poweredsensoruparoundyourhomethatkeepsaneyeondoors,motion,andmore。Iftheydetectsomethingwrongwhilethesystemisarmed,they’lltransmitawirelessalertsignaltoaabasestationthatwillthenraisetheThatapproachwilleliminatemostcord-cuttingconcerns-butwhatabouttheirwirelessjamming?Withtherightdevicetunedtotherightwhat’stostopathieffromjammingyoursetupandblockingthatalertsignalfromeverreachingthebasestation?[D]Jammingconcernsarenothingandthey’renotuniquetosecurityAnydeviceThat’sbuilttoreceiveawirelesssignalataspecificcanbeoverwhelmedbyastrongersignalinginonthesameForparison,let’ssayyouwantedto“jam”aconversationbetweentwopeople-allyou’dneedtodoisyellinthelistener’sear。[E]Securitydevicesarerequiredtolistthefrequenciestheybroadcaston-thatmeansthatapotentialthiefcanfindwhattheyneedtoknowwithminimalGoogling。Theywill,however,needtoknowwhatsystemthey’arelookingfor。Ifyouhaveasigninyouryarddeclaringwhatsetupyouthat’dpointintherightdirection,thoughtatthatwe’aretalkingaboutahighlytargeted,semi-sophisticatedandnotthesortofforced-entryattackthatmakesupthemajorityofburglaries。It’seasiertofindandacquirejammingequipmentforsomefrequenciesthanitisforothers。[F]WirelesssecurityproviderswilloftentakestepstohelpbatthethreatofjammingSimpliSafe,winnerofourEditors’Choicedistinction,utilizesaspecialsystemthat’scapableofseparatingRFinterferenceformtargetedjammingWhenthesystemthinksit’sbeingjammed,it’llnotifyyouviapushalertFromthere,it’suptoyoutosoundthealarm[G]SimpliSafewassingledoutinonerecentarticleonjamming,pletewithavideoshowingtheentiresystembeingeffectivelybypassedwithhandheldjammingequipment。AftertakingappropriatemeasuretocontaintheRFinterferencetoourtestwetestedtheattackoutforourselves,andwereabletoverifythatispossiblewiththerightHowever,wealsoverifiedthatSimpliSafe’ssystemItcaughtusinthesentanalerttomyandalsolistedourRFinterferenceonthesystem’seventlog。Theteambehindthearticleandvideoinquestionmakenomentionoftheorwhetherornotitdetected[H]WeliketheuniquenatureofthatItmeansthatathieflikelywouldn’tbeabletoGooglehowthesystemthenfigureoutawayaroundEveniftheySimpliSafeclaimsthatitssystemisalwaysevolving,andthatitvariesslightlyformsystemtosystem,whichmeanstherewouldn’tbeauniversalmagicformulaforcrackingOthersystemsalsoseemconfidentonthesubjectofTheteamatFrontpointaddressestheissueinablogonitscitingtheirownjamprotectionsoftwareandclaimingthattherearen’tanydocumentedcasesofasuessfuljamattacksincethepanybeganofferingwirelesssecuritysensorsinthe1980s。[I]JammingattacksareabsolutelyAssaidbefore,withtherightequipmentandtherightit’spossibletojamanywirelesstransmission。Buthowprobableisitthatsomeonewillsuessfullyjamtheirwayintoyourhomeandstealyourstuff?[J]Let’simaginethatyouliveinasmallhomewithawirelesssecuritysetupthatoffersafunctionalanti-jammingFirst,athiefisgoingtoneedtotargetyourhome,specifically.Then,he’sgoingtoneedtoknowthetechnicaldetailsofyoursystemandacquirethespecificequipmentnecessaryforjammingyourspecificsetup。Presumably,youkeepyourdoorslockedatnightandwhileyou’reaway,sothethiefwillstillneedtobreakThatmeansdefeatingthelockorbreakingawindow。He’llneedtobejammingyouatthispoint,asabrokenwindoworopeneddoorwouldnormallyreleasethealarm。So,wouldthemotiondetectorsinyourhome,sothethiefwillneedtocontinuejammingoncehe’sinsideandsearchingfortoHowever,he’llneedtodosowithouttrippingthejammingthedetailsofwhichhealmostcertainlydoesnothaveaess[K]Attheendofthethesekindsofsystemsareprimarilydesignedtoprotectagainstthesortofopportunisticsmash-and-grabattackthatmakesupthemajorityofburglaries。They’realsoonlyasinglelayerinwhatshouldideallybeamany-sidedapproachtosecuringyourhome,onethatincludesmonsensethingslikesoundlocksandproperexploitlightingatNosystemisimperable,andnonecanpromisetoeliminatetheworstcasepletely。EveryoneofthemhasvulnerabilitiesthataknowledgeablethiefcouldtheoreticallyAgoodsystemisonethatkeepsthatworst-casesettingasimprobableaspossiblewhilealsoofferingstrongprotectionintheeventofaless-extraordinary36。Itispossibleforburglarstomakejammingattackswiththenecessaryequipmentand37。Interferingwithawirelesssecuritysystemissimilartointerferingwitha38。Aburglarhastocontinuouslyjamthewirelesssecuritydevicetoavoidtriggeringthebothinsideandoutsidethe39。SimpliSafeprovidesdevicesthatareabletodistinguishincidentalradiointerferencefromtargetedjammingattacks。40。Onlyaverysmallproportionofburglariesaremittedbytechnical41。ItisdifficulttocrackSimpliSafeasitssystemkeepschanging。42。Wirelessdeviceswilltransmitsignalssoastoactivatethealarmoncesomethingwrongis43。Differentmeasuresshouldbetakentoprotectone’shomefromburglaryinadditiontothewirelesssecuritysystem。44。SimpliSafe’sdevicecansendawarningtothehouseowner’scellphone。45.Burglarscaneasilygetasecuritydevice’sfrequencybyIntersearch。Questions46to50arebasedonthefollowingAsapersonwhowritersaboutfoodanddrinkforaliving,Icouldn’ttellyouthefirstthingaboutBillPerryorwhetherthebeershesellsarethatButIcantellyouthatIlikethisThat’sbecauseheplanstobantippinginfavorofpayinghisserversanactuallivingIhatetipping。Ihateitbecauseit’sanobligationdisguisedasanoption。Ihateitforthepost-dinnermathitrequiresofme。Butmostly,IhatetippingbecauseIbelieveIwouldbeinabetterplaceifpaydecisionsregardingemployeesweresimplyleftuptotheirasisthecustominvirtuallyeveryotherMostofyouprobablythinkthatyouhatetoo。ResearchsuggestYouactuallylovetipping!YouliketofeelthatyouhaveavoiceinhowmuchmoneyyouserverNomatterhowthemathworksyoupersistentlyviewrestaurantswithvoluntarytippingsystemsasbeingaletterwhichmakesitextremelydifficultforrestaurantsandbarstodoawaywiththetippingOneargumentthatyoutendtohearalotfromthepro-tippingcrowdseemslogicaltheserviceisbetterwhenwaitersdependonpresumablybecausetheyseeabenefittosuessfullyveilingtheircontemptforyou。Well,ifthisweretruewewouldallbeslippingafew100dollarbillstoourdoctorsonthewayouttheirdoors,ButasitturnswaitersseeonlyatinybumpintipswhentheydoanexceptionaljobparedtoapassableWaiters,

溫馨提示

  • 1. 本站所有資源如無特殊說明,都需要本地電腦安裝OFFICE2007和PDF閱讀器。圖紙軟件為CAD,CAXA,PROE,UG,SolidWorks等.壓縮文件請下載最新的WinRAR軟件解壓。
  • 2. 本站的文檔不包含任何第三方提供的附件圖紙等,如果需要附件,請聯系上傳者。文件的所有權益歸上傳用戶所有。
  • 3. 本站RAR壓縮包中若帶圖紙,網頁內容里面會有圖紙預覽,若沒有圖紙預覽就沒有圖紙。
  • 4. 未經權益所有人同意不得將文件中的內容挪作商業或盈利用途。
  • 5. 人人文庫網僅提供信息存儲空間,僅對用戶上傳內容的表現方式做保護處理,對用戶上傳分享的文檔內容本身不做任何修改或編輯,并不能對任何下載內容負責。
  • 6. 下載文件中如有侵權或不適當內容,請與我們聯系,我們立即糾正。
  • 7. 本站不保證下載資源的準確性、安全性和完整性, 同時也不承擔用戶因使用這些下載資源對自己和他人造成任何形式的傷害或損失。

評論

0/150

提交評論