杨浦区2018届高三一模英语卷(含答案)

微信公众号上海高中学习指导杨浦区2017学年度第一学期高三模拟质䟿调研英语学科试卷2017.12本试卷分为第I卷（第1-11页）和第II卷（第12页）两部分。全卷共12页。满分140分。考试时间120分钟。考生注意：1．答第I卷前，考生务必将条形码粘贴在答题纸的指定区域内。2.第I卷（1-20小题，31---70小题）由机器阅卷， 答案 八年级地理上册填图题岩土工程勘察试题省略号的作用及举例应急救援安全知识车间5s试题及答案 必须全部涂写在答题卡上。考生应将代表正确答案的小方格用铅笔涂黑。注意试题题号和答题卡编号一一对应，不能错位。答案需要更改时，必须将原选项用橡皮擦去，重新选择。答案写在试卷上一律不给分。第I卷中的第21-30小题，IV.SummaryWriting部分和第II卷的试题，其答案用钢笔或水笔写在答题纸的规定区域内，如用铅笔答题，或写在试卷上则无效。第I卷（共100分）I.ListeningComprehensionSectionADirections:InSectionA,youwillheartenshortconversationsbetweentwospeakers.Attheendofeachconversation,aquestionwillbeaskedaboutwhatwassaid.Theconversationsandthequestionswillbespokenonlyonce.Afteryouhearaconversationandthequestionaboutit,readthefourpossibleanswersonyourpaper,anddecidewhichoneisthebestanswertothequestionyouhaveheard.1.A.Inaprofessor'soffice.B.Inasecond-handbookshop.C.Inalibrary.D.Inahospital.2.A.10yuan.B.20yuan.C.30yuan.D.50yuan.3.A.Houseagentandcustomer.B.Shopassistantandcustomer.C.Carmechanicandcarowner.D.Employerandemployee.4.A.Themandoesn'tbelievewhatthewomansays.B.Theweatherreportspoilstheman'sgoodmood.C.Theywillcancelthehikingduetothebadweather.D.Themanthinksitunnecessarytogiveuptheadventure.5.A.Shealwaystalksbadabouthercolleagues.B.Shehasagoodreputationamonghercolleagues.C.Sheisgoodathandlingcomplicatedrelationships.D.Shehasgoodrelationswithhercolleaguesandboss.6.A.Harmonyinacommunity.B.Safetyintheneighborhood.C.PreparationforChristmas.D.Waystosaveelectricity.7.A.Watchingadvertisementsmayhelpeaseeyestrain（眼疲劳）.B.It'sagreatchancetobreakthehabitofwatchingTV.C.Theadvertisementsarelongenoughforhertohaveanap.D.Focusingeyesonthescreenforalongtimeisharmfultoeyes.8.A.Themandecidestogohomebyrail.B.Mostpeopletravelbycarduringthefestival.C.Mostpeoplearrivebeyondthescheduledtime.D.Themanwillhaveasoundsleeponthebus.9.A.Heisnotabitoverweight.B.Helikeshisfitnessinstructor.C.Shehassettoomanyrulesforhim.D.Sheshouldtalkwithhispersonaltrainer.微信公众号上海高中学习指导10.A.Greeksarenotallowedtogetmarriedbefore18.B.GreekkidsarenotasindependentasAmericankids.C.Americanparentsdon’tpayforchildren'swedding.D.Greekparentswilltakecareofchildrenuntiltheyare18.SectionBDirections:InSectionB,youwillhearseverallongerconversation(s)andshortpassage(s),andyouwillbeaskedseveralquestionsoneachoftheconversation(s)andthepassage(s).Theconversation(s)andpassage(s)willbereadtwice,butthequestionswillbespokenonlyonce.Whenyouhearaquestion,readthefourpossibleanswersonyourpaperanddecidewhichonewouldbethebestanswertothequestionyouhaveheard.Questions11through13arebasedonthefollowingpassage.11.A.Theburnis20millimetersacross.B.Theburnissmallbutverypainful.C.Theburntakesawaythevictim'sfeeling.D.Theburnissmallbuttheskinisdamaged.12.A.Useacleanplasticbagtokeepwarm.B.Binduptheburnwithbandageorcloth.C.Treattheburnedareawithcoldrunningwater.D.Flush（冲洗）theburnwithicewaterforseveralminutes.13.A.Toavoidinfection.B.Toeasepain.C.Tospeedrecovery.D.Toreducestickiness.Questions14through16arebasedonthefollowingpassage.14.A.Acellphone.B.Aleatherwallet.C.Aminicamera.D.Analarmclock.15.A.Thewalletwillsoundanalarm.B.ItwilltrackthethiefwithGPSsystem.C.Itwillcontactthebanktoblockbalance.D.Itsownerwillreceiveapictureofthethief.16.A.It'sout-datedinthisdigitalage.B.Itcantextmessagesautomatically.C.Itisamultifunctionalwallet.D.Itisuniqueinappearanceandfunction.Questions17through20arebasedonthefollowingconversation.17.A.Theconcertisbeyondhercurfew(宵禁).B.Shecan’tgooutonschoolnight.C.Hermotherisnotavailable.D.Shedoesn’tliketheband.18.A.Hisparentssetastrictruleforhim.B.Hisparentsdon’tcarewhenheisback.C.Heisself-disciplinedandtrustworthy.D.Heenviesthosewhohavecurfews.19.A.Promotingmaturity.B.Givingsenseofsecurity.C.Improvingsenseofresponsibility.D.Discouragingindependence.20.A.It’saseverepunishment.B.It’sforhergood.C.It’saridiculouspractice.D.It’sanexceptionalcase.微信公众号上海高中学习指导II.GrammarandVocabularySectionADirections:Afterreadingthepassagebelow,fillintheblankstomakethepassagescoherentandgrammaticallycorrect.Fortheblankswithagivenword,fillineachblankwiththeproperformofthegivenword;fortheotherblanks,useonewordthatbestfitseachblank.It’sinterestingwhenyouthinkabouthowJapanisanation(21)______appreciatesthevirtuesofsilenceandgoodmanners,andyetwhenitcomestoeatingnoodles,Japanesepeoplecanbe(22)______(loud)intheworld.Accordingtolifestylewebsitegrapee.jp,slurping(发出"哧溜"声)wheneatingnoodles(23)______(encourage)inJapaneseculture.It’sbelievedthattakingairintoyourmouth(24)______enhancetheflavorofthenoodles,andthatithelpscooldownthenoodles.It’salsoconsideredtobeawaytoshowappreciationforthedish.Sometimes,justmakingthenoisealoneseemstomakethenoodlesmoreenjoyable.Itwasn’tuntilanewexpression–“noodleharassment（骚扰）”--cameoutlastyearonsocialmedia(25)______Japanesepeoplestartedtorealizethattheslurpingnoiseismakingsomeforeignvisitorsuncomfortable.(26)______aresponse,JapaneseinstantnoodlemakerNissinintroducedaso-callednoise-cancelingforklastmonth.Thefork,whichlookslikeanelectrictoothbrush,isconnectedwirelesslytoasmartphone.Whenthepersonusingtheforkstartstoslurp,theforksendsasignaltotheperson’sphone,(27)______(make)itplayasoundtomasktheslurpingnoise.Butisitreallynecessary?Diningtraditionsdovary.(28)______isconsideredtobepropertablemannersinonecountryislikelytobeseenasrudeinanother.InIndia,peopleeatwiththeirhands(29)______theythinkinthiswaytheybuildaconnectionwiththefood.However,peoplewhoareusedtoeatingwithforksmightfindituncomfortabletogettheirhands(30)______(cover)inoilandbitsoffood.ButthiseatingmethodispartofIndian'sculture,justlikeJapan'sslurpingispartofitsown.“So,ifyourareeatingnoodles,whetherthat’sramen,uudon,orsoba,pleaseslurp,”wrotereporterBrianAshcraftonblogKotaku.“Ifanyonegetsannoyedwhileyouaredoingthat,paythemnomindbecausethey'remissingthepointentirely.”SectionBDirections:Fillineachblankwithaproperwordchosenfromthebox.Eachwordcanonlybeusedonce.Notethatthereisonewordmorethanyouneed.A.tissueB.treatedC.potentialD.engineeringE.environmentF.limitedG.procedureH.commercialI.promisingJ.expandingK.internalScientistshavedevelopedanewsurgicalgluethatcouldtransformemergencytreatmentsbysealingupcriticalwoundsintheskinortheorgans,withouttheneedforstaplesorsutures（钉合或缝合）.It’scalledMeTro.ItwasdevelopedbyresearchersfrombothHarvardMedicalSchoolandtheUniversityofSydney,ledbyNasimAnnabi,anassistantprofessorofchemical__31__.Theglueismadefromamodified（改良的）humanproteinthatrespondstoUVlight,allowingtheapplicationanddryingofthegel-likesubstanceinjustaminute.Accordingtotheinternationalteamofresearchersbehindtheglue,itcouldquiteliterallybealifesaver,sealingupwoundsin60secondswithoutstoppingthenatural__32__andrelaxingoftheorganortheskinit’sappliedto.Wounds__33__withMeTrocanhealupinhalfthetimecomparedwithstitchesorstaples,theresearchersclaim,andifsurgeryisrequiredthenMeTrocansimplifythat__34__too.It'salsooneofseveralwaysresearchersareexploringtoengineerourbody'sownnaturalsubstancestohelprepairitwhenneeded.The__35__applicationsarepowerful–fromtreatingserious__36__woundsatemergencysitessuchasfollowingcaraccidentsandinwarzones,aswellasimprovinghospitalsurgeries.微信公众号上海高中学习指导MeTroissimpletoapply,canbeeasilystored,andworkscloselywithnatural__37__tohealawound.What’smore,itdegradeswithoutleavinganykindofpoisonousleftoversinthebody.Fornowthetrialsare__38__toanimalmodels.Buthumantrialsareintheworks,andtheresultstodateareincredibly__39__.IftheMeTrocanbefurtherdevelopedintoa__40__product,itcouldbecomeanessentialpartofafirstresponder’stoolkit.III.ReadingComprehensionSectionADirections:ForeachblankinthefollowingpassagetherearefourwordsorphrasesmarkedA,B,CandD.Fillineachblankwiththewordorphrasethatbestfitsthecontext.Competitionisgoodforbusinesses.Intheworldofnavigation（导航）systems,however,competitionisalsoanecessity---itmaynotbewisetorelyonforeignsystemsforpositioningandtrackingservices.Now,___41___remarkableaccuracyandreliability,China’sBeiDousystemhasmadeitspresencefelt.TheBeiDouprojectwassetupin1994.ThefirstBeiDousatellitewasnotlauncheduntil2000.Now,___42___,therearealreadymorethan20BeiDousatellitesinorbit(轨道).Theyforma___43___networkthatprovidespositioning,navigationandtimingservicesforChinaandseveralotherAsiancountries.This“home-grown"systemisnow___44___amajorupgrade.Earlierthismonth,twoBeiDou-3satellites,thefirstofChina’smostpowerful___45___ofnavigationsatellites,werelaunchedintospace.Thelaunchmarksthebeginningoftheglobal___46___oftheBeiDounavigationsystem.Overthenextthreeyears,Chinaplanstosendup30moreBeiDou-3satellites;Theexpandednavigationsystemwill___47___createanetworkthatisabletosupportmilitaryandcivilianapplicationsaroundtheworld.Scientistsinvolvedintheprojectsaidthenewsystemwouldgivecivilianusersanaccuracyof2.5meterstofivemeters,overtakingthatofthe___48___positioningtechnologies.BeiDou’schiefdesignersaidthenewsatelliteswouldbeableto__49___whichlaneacarisusingonamotorwayand__50___theswingofabuildinginhighwinds.Itwillalsobeabletoguidefiretruckstothenearestwaterhydrant(消防栓).TheChinesemilitary,meanwhile,willbeabletousecodedsignalsformillimeter（毫米）___51___.Chinaisonlythethirdcountryintheworldtodevelopanavigationsystemonitsown,aftertheUnitedStates(GPS)andRussia(GLONASS).DevelopingBeiDouisanecessity.Thesystem__52___nationalsecuritybyendingarelianceonforeignsystems.Moreover,itenhancesChina’sinternationalreputationfortechnological___53___.Formostofus,thebenefitsofthenewsatellitesystemwillbefeltinacoupleofyearswhenmorephonesare___54___withBeiDouchips(芯片).ManysmartphonestodaystilluseGPSandGLONASS.That’llsoonchangewiththedevelopmentofBeiDou.Oneproductmanager___55___mostsmartphonestobeabletoreceiveBeiDousignals.Hesays:“Inthreeyears’time,peoplemaystillsay‘I’musingGPS’,butinfact,theirphoneistuneintoBeiDou.”41.A.dominatingB.boastingC.shiftingD.inputting42.A.howeverB.afterwardsC.moreoverD.therefore43.A.continentalB.localC.domesticD.regional44.A.enduringB.encounteringC.undergoingD.processing45.A.generationB.informationC.examinationD.revolution46.A.extensionB.expansionC.interactionD.invasion47.A.objectivelyB.eventuallyC.sufficientlyD.essentially48.A.existingB.progressingC.upcomingD.everlasting49.A.exploreB.investigateC.spotD.remind50.A.detectB.preventC.protectD.adjust51.A.privacyB.accuracyC.fluencyD.currency52.A.convincesB.insuresC.highlightsD.strengthens53.A.innovationB.consumptionC.emissionD.exhibition54.A.decoratedB.furnishedC.equippedD.connected微信公众号上海高中学习指导55.A.respectsB.instructsC.inspectsD.expectsSectionBDirections:Readthefollowingthreepassages.Eachpassageisfollowedbyseveralquestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA,B,CandD.Choosetheonethatfitsbestaccordingtotheinformationgiveninthepassageyouhavejustread.(A)ASwedishpowerplantistakingreuseandrecycletothenextlevelbyburningunusableclothinginsteadofcoal,Bloombergreports.RetailgiantHennes&Mauritz,morecommonlyknownasH&M,ishelpingtheutilitytransitionawayfromcoalthroughitsmoldy(发霉的)orotherwiseunsalableclothing.Themulti-fuelpowerandheatingstationinVästerås,centralSweden,isplanningtobecompletelyfossil-fuelfreeby2020.It’sthelargeststationofitskindandSwedenclaimsit’soneofEurope’scleanest.Tokickitscoalhabit,thestationisturninginsteadtootherburnablematerialsincludingrecycledwood,rubbishandyes,clothes.“Ourgoalistouseonlyrenewableandrecycledfuels,”JensNeren,headoffuelsuppliesattheutilitycompanywhichownsandoperatestheVästeråsplant,toldBloomberg.JohannaDahl,headofcommunicationsforH&MinSweden,toldBloombergthatthecompanyallowsonlytheburningofclotheswhicharenolongersafetouse.“Itisourlegalobligationtomakesurethatclothesthatcontainmoldordonotmeettherequirementsofourstrictrestrictiononchemicalsaredestroyed,”shesaid.TheVästeråsplanthasburnedaround15tonsofoldH&Mclothessofarthisyear,comparedwithabout400,000tonsofrubbish,NerentoldBloomberg.Swedenhasoneoftheworld’sgreenerenergygeneratingsystems,andhasinvestedinbioenergy,solarpowerandelectricbuses.In2015,theScandinaviancountryannouncedanambitiousaimtobecomeoneofthefirstnationsintheworldtoenditsdependenceonfossilfuels.AccordingtotheSwedishgovernment,thecountryhasalreadyheavilyreduceditsdependenceonoil,whichaccountedfor75%oftheenergysupplyin1970,andnowmakesupa20%share.56.WhichofthefollowingcanserveasfuelintheVästeråsplant?A.FashionablecoatsinH&Mchainstore.B.OldTVsetsdesertedasrubbish.C.Woodenfurnitureinsecond-handshop.D.H&Mclothesunsuitableforsale.57.Theunderlinedwordinthelastparagraph“generating”isclosestinmeaningto______.A.eliminatingB.adjustingC.producingD.circulating58.Whatcanwelearnfromthepassage?A.TheSwedishgovernmentdiscouragesthedevelopmentofbioenergy.B.Clothesonlytakeupasmallproportionoftheburningmaterial.C.Sweden’sfossil-fuelfreeplanisalmostaccomplishedbynow.D.Swedenhasanambitiontobethecleanestcountryintheworld.59.Whatisthemainideaofthepassage?A.ASwedishpowerplantisburningunusableH&Mclothesforfuel.B.TheSwedishgovernmentaimshighandistakingeffectiveaction.C.H&Mislookingforanewwaytostrengthenitspositioninfashion.D.CoalandoilarenolongerregardedastheprimaryfuelsinSweden.(B)微信公众号上海高中学习指导60.Beforeanadventure,atrekkershould______.A.telltheparkofficialshisdestinationandtimescheduleB.packupsomejunglefruitjuiceandpre-cookedmealsC.consultalocalguideaboutthemostadventurousrouteD.havehisfitnesslevelassessedatthetouristcenterRAINFORESTADVENTURETIPS1.Findoutaboutthetrailandsurroundings,besurethatyouhaveenoughtimetocompletetheentireroutebeforedarknessfalls.Donotstrayoffthepathtochaseafteranimals.2.Usegoodjudgmentregardingthefitnesslevelrequiredforthetrek（徒步跋涉）,andknowyourphysicallimits.3.Alwaysinformtheparkofficialsorletsomeoneknowofyourplansanddestinationfortheday,especiallyifgoingalone.4.Takeplentyofwaterandpackafeweasytoeatsnackstokeepenergylevelup.Unlesstrekkingwithalocalguide,itisnotadvisabletoeatjunglefruitordrinkfromanywatersource.5.Beasquietaspossibletoavoidscaringanywildlife.Gettinganearlystartduringthedawnprovidesthebestchancetosightanimalsseekingfoodandthewarmthoftheearlymorningsun.6.Wearthin,loose,preferablycottonclothingtoremaincomfortable.7.Coverarmsandlegswithlongtrousersandlong-sleevedshirtstowardoffmosquitoesandtoprovideprotectionagainstthornyplants.8.Bepreparedforsuddenrainshowersbycarryingaponchothatwrapsoverbothbodyandyourcarryingpacktokeepeverythingdry.9.Choosefootwearwithproperanklesupportandgoodtraction.10.Awidebrimmedhathelpstoshadeatrekkerfromtheheatofthetropicalsun.微信公众号上海高中学习指导61.WhichofthefollowingisNOTsuitableforarainforesttrekking?A.Long-sleevedcottonshirts.B.Tightsportsshorts.C.Hikingboots.D.Awidebrimmedhat.62.Ifatrekkerstartsoutatdawn,hemay______.A.escapebeingcaughtintherainB.sightscaredwildlifeC.enjoytheheatofthetropicalsunD.seeanimalsseekingfood(C)ThelargestgeneticstudyofmosquitoeshasfoundtheirabilitytoresistinsecticidesisevolvingrapidlyandspreadingacrossAfrica,puttingmillionsofpeopleathigherriskofcontractingmalaria（疟疾）.Britishscientistswholedtheworksaidmosquitoes'growingresistancetocontroltoolssuchasinsecticide-treatedbednetsandinsecticidespraying,whichhavehelpedcutmalariacasessince2000,nowthreatens“todisturbmalariacontrol”inAfrica.“Ourstudyhighlightstheseverechallengesfacingpubliceffortstocontrolmosquitoesandtomanageandlimitinsecticideresistance,”saidMartinDonnellyoftheLiverpoolSchoolofTropicalMedicine,whoworkedonthestudywithateamfromBritain’sWellcomeTrustSangerInstitute.LatestWorldHealthOrganization(WHO)datashowthat216millionpeoplewereinfectedlastyearwiththemalariaparasite(寄生虫),whichistransmittedbyblood-suckingAnophelesmosquitoes.Thediseasekilled445,000peoplein2016,andthemajorityofthemwerechildreninsub-SaharanAfrica.Tounderstandhowmosquitoesareevolving,theresearcherssequencedtheDNAof765wildAnophelesmosquitoestakenfrom15locationsacrosseightAfricancountries.Theirwork,publishedinthejournalNatureonWednesday,createdthelargestdataresourceonnaturalgeneticvariationforanyspeciesofinsect.Analyzingthedata,thescientistsfoundthattheAnophelesgambiaemosquitoes（冈比亚疟蚊）wereextremelygeneticallydiverse（多样化的）comparedwithmostotheranimalspecies.Thishighgeneticdiversityenablesrapidevolution,theysaid,andhelpstoexplainhowmosquitoesdevelopinsecticideresistancesoquickly.Thedataalsoshowedtherapidevolutionofinsecticideresistanceappearedtobeduetomanypreviouslyunknowngeneticvariants（变体）withincertaingenes.ThescientistssaidthesegeneticvariantsforinsecticideresistancewerenotonlyemergingindependentlyindifferentpartsofAfrica,butwerealsobeingspreadacrossthecontinentbymosquitomigration.MichaelChew,anexpertatBritain’sWellcomeTrustglobalhealthcharitywhichhelpedfundtheresearch,saidthefindsunderlinedtheimportanceofpushingscientificresearchaheadtocontrolmalaria.Globaleffortstocontrolmalariathrougheffectivevaccine,insecticidesandthebestdrugcombinationsrequireurgent,unitedactionbyscientists,drugcompanies,governmentsandtheWHO.63.Whichofthefollowingisscientists’headache?A.ThenumberofmosquitoesinAfricaisgrowingrapidly.B.Somegeneticvariantsofmosquitoesarestillunknown.C.Theexistinginsecticidesaren’taseffectiveastheyusedtobe.D.MillionsofAfricanpeoplehaveresistancetomedicinesformalaria.64.Malariacasescanbecutby______.A.threateningdrugcompaniesB.sprayinginsecticidesC.limitingblooddonationD.transmittingdata65.WhatCANNOTbeconcludedfromthepassage?A.Childrenaremorelikelytobebitbymosquitoes.微信公众号上海高中学习指导B.Manypreviouslyunknownvariantsarefoundinthestudy.C.Themosquitomigrationcontributestothespreadofvariants.D.Anophelesmosquitoeshavegreatgeneticdiversity.66.WhichisFALSEaboutthegeneticstudyofmosquitoes?A.Itcreatedthelargestdataonnaturalgeneticvariationforanyinsectspecies.B.Itfoundthepossiblecausesfortherapidevolutionofinsecticideresistance.C.Itdiscoveredwherethegeneticvariantsemergedandhowtheywerespread.D.Ithighlightedthepubliceffortsandappealedtolimittheuseofinsecticides.SectionCDirections:Readthefollowingpassage.Fillineachblankwithapropersentencegiveninthebox.Eachsentencecanbeusedonlyonce.Notethattherearetwomoresentencesthanyouneed.A.Butdespiteitspopularity,expertswarnthatbiometricsmightnotbeassecureaswe’dimagined.B.Securityexpertsdon’tthinkitabsolutelynecessarytousebiometrictechnology.C.Butusingmultiplesecuritymeasuresisthebestdefense.D.Now,thistypeoftechnologymightnotbefaraway.E.Ifaperson’sbiometricinformationisstolen,thatcouldhaveextremelyseriousconsequencesforthatindividualF.ThechancethatarandompersoncouldlookatyouriPhoneXandunlockitwithhisfaceisaboutoneinamillion.Imagineyou'restandinginlinetobuyanafterschoolsnackatastore.Youstepuptothecounterandthecashierscansyourfood.Next,youhavetopay.ButinsteadofscanningaQRcodewithyoursmartphone,youjustholdoutyourhandsothecashiercanscanyourfingerprint.Or,acamerascansyourface,youreyesorevenyourear.__________67__________Astechnologycompaniesmoveawayfromtraditionalpassword,biometric（生物识别）security,whichincludesfingerprint,faceandvoiceID,isbecomingincreasinglypopular.In2013,AppleintroducedtheiPhone5s,oneofthefirstsmartphoneswithafingerprintscanner.Sincethen,usingone’sfingerprinttounlockaphoneandmakemobilepaymentshasbecomecommonplace,bringingconveniencetoourlives.Andsincelastyear,Samsunghasfeaturedeye-scanningtechnologyinitstopsmartphones,whileApple’snewiPhoneXcanevenscanauser’sface.__________68__________“Biometrics,ideally,aregood,”JohnMichener,abiometricexpert,toldtechwebsiteInverse.“Inpractice,notsomuch.”WhenintroducingthenewiPhone’sFaceIDfeatureatApple’sKeynoteEventinSeptember,PhilSchiller,Apple’sseniorvicepresident,said,“__________69__________”Butit’salreadybeendone.InavideopostedoncommunitywebsiteRedditonNov3,twobrothersshowedhowtheywereeachabletounlockthesameiPhoneXusingtheirownface,Quartzreported.Andtheyaren’teventwins.“Wemayexpecttoomuchfrombiometrics,”AnilJain,acomputerscienceprofessoratMichiganStateUniversity,toldCBSnews.“Nosecuritysystemsareperfect.”E