2016年12月英语六级真题第1套

2016年12月英语六级真题（第1套）PartIWriting（30minutes）Directions:Forthispart,youareallowed30minutestowriteashortessayoninvention.Youressayshouldincludetheimportanceofinventionandmeasurestobetakentoencourageinvention.Youarerequiredtowriteatleast150wordsbutnomorethan200words.PartIIListeningComprehension（30minutes）SectionADirections:Inthissection,youwillheartwolongconversations.Attheendofeachconversation,youwillhearfourquestions.Boththeconversationandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA),B),C)andD).ThenmarkthecorrespondingletteronAnswerSheetIwithasinglelinethroughthecentre.Questions1to4arebasedontheconversationyouhavejustheard.1.A）Ittriestopredictthepossibletrendsofglobalclimatechange.B）Itstudiestheimpactsofglobalclimatechangeonpeople’slives.C）Itlinksthescienceofclimatechangetoeconomicandpolicyissues.D）Itfocusesontheeffortscountriescanmaketodealwithglobalwarming.2.A）Itwilltakealongtimebeforeaconsensusisreachedonitsimpact.B）Itwouldbemorecostlytodealwithitsconsequencesthantoavoidit.C）Itisthemostpressingissueconfrontingallcountries.D）Itisboundtocauseendlessdisputesamongnations.3.A）Thetransitiontolow-carbonenergysystems.B）Thecooperationamongworldmajorpowers.C）Thesigningofaglobalagreement.D）Theraisingofpeople’sawareness.4.A）Carryoutmoreresearchonit.B）Cutdownenergyconsumption.C）Planwellinadvance.D）Adoptnewtechnology.Questions5to8arebasedontheconversationyouhavejustheard.5.A）Whenluckplaysarole.B）Whatdeterminessuccess.C）Whetherpracticemakesperfect.D）Howimportantnaturaltalentis.6.A）Itknocksatyourdooronlyonceinawhile.B）Itissomethingthatnoonecanpossiblycreate.C）Itcomesnaturallyoutofone’sself-confidence.D）Itmeansbeinggoodatseizingopportunities.7.A）Luckrarelycontributestoaperson’ssuccess.B）Onemusthavenaturaltalenttobesuccessful.C）Oneshouldalwaysbereadytoseizeopportunities.D）Practiceisessentialtobecominggoodatsomething.8.A）Puttingtimeandeffortintofunthingsisprofitable.B）Peoplewholovewhattheydocarelittleaboutmoney.C）Beingpassionateaboutworkcanmakeonewealthy.D）Peopleinneedofmoneyworkhardautomatically.SectionBDirections:Inthissection,youwillheartwopassages.Attheendofeachpassage,youwillhearthreeorfourquestions.Boththepassageandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA),B),C)andD).ThenmarkthecorrespondingletteronAnswerSheet1withasinglelinethroughthecentre.Questions9to12arebasedonthepassageyouhavejustheard.9.A）Thestumpofagianttree.B）Ahugepieceofrock.C）Thepeakofamountain.D）Atallchimney.10.A）Humanactivity.B）Windandwater.C）Chemicalprocesses.D）Fireandfury.11.A）Itisahistoricalmonument.B）Itwasbuiltinancienttimes.C）ItisIndians’sacredplaceforworship.D）Itwascreatedbysupernaturalpowers.12.A）Byshelteringtheminacave.B）Bykillingtheattackingbears.C）Byliftingthemwellabovetheground.D）Bytakingthemtothetopofamountain.Questions13to15arebasedonthepassageyouhavejustheard.13.A）Theywillbuysomethingfromtheconveniencestores.B）Theywilltakeadvantageofthetimetorestawhile.C）Theywillhavetheirvehicleswashedorserviced.D）Theywillpickupsomesouvenirsorgiftitems.14.A）Theycanbringonlytemporarypleasures.B）Theyaremeantfortheextremelywealthy.C）Theyshouldbedoneawaywithaltogether.D）Theymayeventuallydriveonetobankruptcy.15.A）Agoodwaytosocializeistohavedailylunchwithone’scolleagues.B）Retirementsavingsshouldcomefirstinone’sfamilybudgeting.C）Avacationwillbeaffordableifonesaves20dollarsaweek.D）Smalldailysavingscanmakeabigdifferenceinone’slife.SectionCDirections:Inthissection,youwillhearthreerecordingsoflecturesortalksfollowedbythreeorfourquestions.Therecordingswillbeplayedonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA),B),C)andD).ThenmarkthecorrespondingletteronAnswerSheet1withasinglelinethroughthecentre.Questions16to18arebasedontherecordingyouhavejustheard.16.A）Theyshouldbedoneawaywith.B）Theyarenecessaryinourlives.C）Theyenrichourexperience.D）Theyareharmfultohealth.17.A）Theyfeelstressedoutevenwithoutanychallengesinlife.B）Theyfeeltoooverwhelmedtodealwithlife’sproblems.C）Theyareanxioustofreethemselvesfromlife’stroubles.D）Theyareexhaustedevenwithoutdoinganyheavywork.18.A）Theyexpandourmind.B）Theyprolongourlives.C）Theynarrowourfocus.D）Theylessenourburdens.Questions19to22arebasedontherecordingyouhavejustheard.19.A）Itisnoteasilybreakable.B）Itcamefroma3Dprinter.C）Itrepresentsthelateststyle.D）Itwasmadebyafashiondesigner.20.A）Whenshehadjustgraduatedfromhercollege.B）WhensheattendedaconferenceinNewYork.C）Whenshewasstudyingatafashiondesignschool.D）Whensheattendedafashionshowninemonthsago.21.A）Itwasdifficulttoprint.B）Itwashardtocomeby.C）Itwashardandbreakable.D）Itwasextremelyexpensive.22.A）Itisthelatestmodelofa3Dprinter.B）Itisaplasticwidelyusedin3Dprinting.C）Itgivesfashiondesignersroomforimagination.D）Itmarksabreakthroughinprintingmaterial.Questions23to25arebasedontherecordingyouhavejustheard.23.A）Theyarisefromtheadvancesintechnology.B）Theyhavenotbeenexaminedindetailsofar.C）Theyareeasytosolvewithmoderntechnology.D）Theycan’tbesolvedwithoutgovernmentsupport.24.A）Itisattractivetoentrepreneurs.B）Itdemandshugeinvestment.C）Itfocusesonnewproducts.D）Itisintenselycompetitive.25.A）Cooperationwithbigcompanies.B）Recruitingmorequalifiedstaff.C）In-servicetrainingofITpersonnel.D）Sharingofcostswitheachother.PartIIIReadingComprehension（40minutes）SectionADirections:Inthissection,thereisapassagewithtenblanks.Youarerequiredtoselectonewordforeachblankfromalistofchoicesgiveninawordbankfollowingthepassage.Readthepassagethroughcarefullybeforemakingyourchoices.Eachchoiceinthebankisidentifiedbyaletter.PleasemarkthecorrespondingletterforeachitemonAnswerSheet2withasinglelinethroughthecentre.Youmaynotuseanyofthewordsinthebankmorethanonce.Itisimportantthatscientistsbeseenasnormalpeopleaskingandansweringimportantquestions.Good,soundsciencedependson26,experimentsandreasonedmethodologies.Itrequiresawillingnesstoasknewquestionsandtrynewapproaches.Itrequiresonetotakerisksandexperiencefailures.Butgoodsciencealsorequires27understanding,clearexplanationandconcisepresentation.Ourcountryneedsmorescientistswhoarewillingtostepoutinthepublic28andoffertheiropinionsonimportantmatters.Weneedmorescientistswhocanexplainwhattheyaredoinginlanguagethatis29andunderstandabletothepublic.Thoseofuswhoarenotscientistsshouldalsobepreparedtosupportpublicengagementbyscientists,andto30scientificknowledgeintoourpubliccommunications.Toomanypeopleinthiscountry,includingsomeamongourelectedleadership,stilldonotunderstandhowscienceworksorwhyrobust,long-rangeinvestmentsinresearchvitallymatter.Inthe1960s,theUnitedStates31nearly17%ofdiscretionary（可酌情支配的）spendingtoresearchanddevelopment,32decadesofeconomicgrowth.By2008,thefigurehadfallenintothesingle33.Thisoccursatatimewhenothernationshavemadesignificantgainsintheirownresearchcapabilities.AttheUniversityofCalifornia（UC）,we34ourselvesnotonlyonthequalityofourresearch,butalsoonitscontributiontoimprovingourworld.To35thedevelopmentofsciencefromthelabbenchtothemarketplace,UCisinvestingourownmoneyinourowngoodideas.A）arenaI）incorporateB）contextualJ）indefiniteC）convincingK）indulgeD）devotedL）inertiaE）digitsF）hastenM）prideN）reapingG）hypothesesO）warrantH）impairingSectionBDirections:Inthissection,youaregoingtoreadapassagewithtenstatementsattachedtoit.Eachstatementcontainsinformationgiveninoneoftheparagraphs.Identifytheparagraphfromwhichtheinformationisderived.Youmaychooseaparagraphmorethanonce.Eachparagraphismarkedwithaletter.AnswerthequestionsbymarkingthecorrespondingletteronAnswerSheet2.AreWeinanInnovationLull?[A] Scanthehighlightsofthisyear’sConsumerElectronicsShow（CES）,andyoumaygetaslightfeelingofhavingseenthembefore.Manyofthecoolestgadgetsthisyeararethesameasthecoolestgadgetslastyear—ortheyearbefore,even.Theboothsarestillexciting,andthedemosarestilljustascrazy.Itisstilleasytobedazzledbythedisplayofdrones（无人机）,3Dprinters,virtualrealitygoggles（眼镜）andmore“smart”devicesthanyoucouldeverhopetocatalog.Uponreflection,however,itisequallyeasytofeellikeyouhaveseenitallbefore.Anditishardnottothink:Areweinaninnovationlull（间歇期）?[B] Insomeways,theanswerisyes.Foryears,smartphones,televisions,tablets,laptopsanddesktopshavemadeupahugepartofthemarketanddriveninnovation.Butnowthesesegmentsarelookingatslowergrowthcurves—orshrinkingmarketsinsomecases—asconsumersarenotaseagertospendmoneyonnewgadgets.Meanwhile,emergingtechnologies—thedrones,3Dprintersandsmart-homedevicesoftheworld—nowseemabittoooldtobecalled“thenextbigthing”.[C] Basicallythetechindustryseemstobeinanawkwardperiodnow.“Thereisnotanyone-hitwonder,andtherewillnotbeoneforyearstocome,”saidGaryShapiro,presidentandchiefexecutiveoftheConsumerTechnologyAssociation（CTA）.Inhiseyes,however,thatdoesn’tnecessarilymeanthatinnovationhasstopped.Ithasjustgrownupalittle.“Manyindustriesaregoingoutofinfancyandbecomingadolescents,”Shapirosaid.[D] Forinstance,newtechnologiesthatarebuildinguponexistingtechnologyhavenotfoundtheirfootingwellenoughtoappealtoamassaudience,because,inmanycases,theyneedtoworkeffectivelywithotherdevicestorealizetheirfullappeal.Taketheevolutionofthesmarthome,forexample.Companiesarepushingithardbutmakeitalmostoverwhelmingeventodipatoeinthewaterfortheaverageconsumer,becausetherearesomanycompatibilityissuestothinkabout.Noaveragepersonwantstofigureoutwhethertheirfavoritecalendarsoftwareworkswiththeirfridgeorwhethertheirwashingmachineandtabletgetalong.Havingtoinstalladifferentappforeachsmartapplianceinyourhomeisannoying;itwouldbenicerifyoucouldmanageeverythingtogether.Andwhileyoumayforgiveyoursmartphoneanoccasionalfault,youprobablyhavelesspatienceforerrormessagesfromyourdoorlock.[E] Companiesarepromotingtheirownstandards,andthemarkethasnothadtimetochooseawinneryetasthisisstillverynew.Companiesthathavelongfocusedonhardwarenowhavetothinkofecosystemsinsteadtogiveconsumerspracticalsolutionstotheireverydayproblems.“Thedialogueischangingfromwhatistechnologicallypossibletowhatistechnologicallymeaningful,”saideconomistShawnDuBravac.DuBravacworksforCTA—whichputsontheshoweachyear—andsaidthatthisshifttoasearchforsolutionshasbeennoticeableasheresearchedhispredictionsfor2016.[F] “SomuchofwhatCEShasbeenaboutisthecool.Itisabouttheflashinessandthegadgets,”saidJohnCurran,managingdirectorofresearchatAccenture.“Butoverthelastcoupleofyears,andinthisoneinparticular,wearestartingtoseecompaniesshiftfromwhatisthelargestscreensize,thesmallestformfactorortheshiniestobjectandmoreintowhatallofthesedevicesdothatispracticalinaconsumer’slife.”Eventhetechnologypressconferences,whichhavebeenhigh-profileinthepastandreachedalevelofdramaandtheatricsfittingforaLasVegasstage,haveadifferentbenttothem.Ratherthanjustdazzlingwithahighcoolfactor,thereisafocusonthepractical.Fitbit,forexample,releaseditsfirstsmartwatchMonday,sellingwithaclearpurpose—toimproveyourfitness—andpromotingitasa“tool,notatoy”.Notonlythat,itsupportsanumberofplatforms:Apple’siOS,Google’sAndroidandMicrosoft’sWindowsphone.[G] Thatseemstobewhatconsumersaredemanding,afterall.Consumersarebecomingincreasinglyboredwithwhatcompanieshavetooffer:Asurveyof28,000consumersin28countriesreleasedbyAccenturefoundconsumersarenotasexcitedabouttechnologyastheyoncewere.Forexample,whenaskedwhethertheywouldbuyanewsmartphonethisyear,only48percentsaidyes—asix-pointdropfrom2015.[H] Andwhenitcomestothehyper-connectedsuper-smartworldthattechnologyfirmsarepaintingforus,itseemsthatconsumersaregrowingmoreuneasyabouthandingoverthemassiveamountsofconsumerdataneededtoprovidethepersonalized,customizedsolutionsthatcompaniesneedtoimprovetheirservices.Thatcouldbeanotherexplanationforwhycompaniesseemtobestrengtheningtheirtalkofthepracticalityoftheirdevices.[I] Companieshavealreadywonpartofthebattle,havingdriventechintoeverypartofourlives,trackingourstepsandourveryheartbeats.Yetthepersistentquestionof“WhydoIneedthat?”—or,perhapsmoretellingly,“Whydoyouneedtoknowthat?”—dogsthestepsofmanynewventures.Only13percentofrespondentssaidthattheywereinterestedinbuyingasmartwatchin2016,forexample—anincreaseofjustonepercentfromthepreviousyeardespiteayearofhigh-profilelaunches.Thatisbadnewsforanyfirmthatmayhopethatsmartwatchescanmakeupgroundformaturingsmartphoneandtabletmarkets.Andthesurveyfoundflatdemandforfitnessmonitors,smartthermostats（恒温器）andconnectedhomecameras,aswell.[J] Accordingtothesurvey,thatlackofenthusiasmcouldstemfromconcernsaboutprivacyandsecurity.Evenamongpeoplewhohaveboughtconnecteddevicesofsomekind,37percentsaidthattheyaregoingtobemorecautiousaboutusingthesedevicesandservicesinthefuture.Afull18percenthaveevenreturneddevicesuntiltheyfeeltheycangetsaferguaranteesagainsthavingtheirsensitiveinformationhacked.[K] That,too,explainstheheavyWashingtonpresenceatthisyear’sshow,asthesenewtechnologiesintrudeuponheavilyregulatedareas.InadditiontomanyseniorofficialsfromtheFederalTradeandFederalCommunicationsCommissions,thisyear’slistofpolicymakersalsoincludesappearancesfromTransportationSecretaryAnthonyFoxx,totalkaboutsmartcities,andFederalAviationAdministrationAdministratorMichaelHuerta,totalkaboutdrones.[L] Curran,theAccentureanalyst,saidthatincreasedgovernmentinterestintheshowmakessenseastechnologybecomesalargerpartofourlives.“Thereisanincompatibilityintherateatwhichtheseareadvancingrelativetothewaywe’redigestingit,”hesaid.“Technologyisbecomingbiggerandmoreaspirational,andpenetratingalmosteveryaspectofourlives.Wehavetounderstandandthinkabouttheimplications,andbalancethesegreatinnovationswiththepotentialdownsidestheynaturallycarrywiththem.”36.Consumersareoftenhesitanttotrysmart-homedevicesbecausetheyareworriedaboutcompatibilityproblems.37.Thisyear’selectronicsshowfeaturedthepresenceofmanyofficialsfromthefederalgovernment.38.Themarketdemandforelectronicdevicesisnoweitherdecliningornotgrowingasfastasbefore.39.Oneanalystsuggestsitisnecessarytoacceptboththepositiveandnegativeaspectsofinnovativeproducts.40.TheConsumerElectronicsShowinrecentyearshasbeguntofocusmoreonthepracticalvaluethantheshowinessofelectronicdevices.41.Fewerinnovativeproductswerefoundatthisyear’selectronicproductsshow.42.Consumersarebecomingmoreworriedaboutgivingpersonalinformationtotechcompaniestogetcustomizedproductsandservices.43.TheConsumerTechnologyAssociationisthesponsoroftheannualConsumerElectronicsShow.44.Manyconsumerswonderaboutthenecessityofhavingtheirfitnessmonitored.45.Theelectronicindustryismaturingeventhoughnowonderproductshitthemarket.SectionCDirections:Thereare2passagesinthissection.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA),B),C)andD).YoushoulddecideonthebestchoiceandmarkthecorrespondingletteronAnswerSheet2withasinglelinethroughthecentre.PassageOneQuestions46to50arebasedonthefollowingpassage.TheParisclimateagreementfinalisedinDecemberlastyearheraldedaneweraforclimateaction.Forthefirsttime,theworld’snationsagreedtokeepglobalwarmingwellbelow2℃.Thisisvitalforclimate-vulnerablenations.Fewerthan4%ofcountriesareresponsibleformorethanhalfoftheworld’sgreenhousegasemissions.InastudypublishedinNatureScientificReports,werevealjusthowdeepthisinjusticeruns.DevelopednationssuchasAustralia,theUnitedStates,Canada,andEuropeancountriesareessentiallyclimate“free-riders”:causingthemajorityoftheproblemsthroughhighgreenhousegasemissions,whileincurringfewofthecostssuchasclimatechange’simpactonfoodandwater.Inotherwords,afewcountriesarebenefitingenormouslyfromtheconsumptionoffossilfuels,whileatthesametimecontributingdisproportionatelytotheglobalburdenofclimatechange.Ontheflipside,therearemany“forcedriders”,whoaresufferingfromtheclimatechangeimpactsdespitehavingscarcelycontributedtotheproblem.Manyoftheworld’smostclimatevulnerablecountries,themajorityofwhichareAfricanorsmallislandstates,produceaverysmallquantityofemissions.Thisismuchlikeanon-smokergettingcancerfromsecond-handsmoke,whiletheheavysmokerisfortunateenoughtosmokeingoodhealth.TheParisagreementhasbeenwidelyhailedasapositivestepforwardinaddressingclimatechangeforall,althoughthedetailsonaddressing“climatejustice”canbebestdescribedassketchy.Thegoalofkeepingglobaltemperaturerise“wellbelow”2℃iscommendablebuttheemissions-reductionpledgessubmittedbycountriesleadinguptotheParistalksareveryunlikelytodeliveronthis.Morethan$100billioninfundinghasbeenputonthetableforsupportingdevelopingnationstoreduceemissions.However,theagreementspecifiesthatthereisnoformaldistinctionbetweendevelopedanddevelopingnationsintheirresponsibilitytocutemissions,effectivelyignoringhistoricalemissions.Thereisalsoverylittledetailonwhowillprovidethefundsor,importantly,whoisresponsiblefortheirprovision.Securingthesefunds,andestablishingwhoisresponsibleforraisingthemwillalsobevitalforthefutureofclimate-vulnerablecountries.Themostclimate-vulnerablecountriesintheworldhavecontributedverylittletocreatingtheglobaldiseasefromwhichtheynowsufferthemost.Theremusturgentlybeameaningfulmobilisationofthepoliciesoutlinedintheagreementifwearetoachievenationalemissionsreductionswhilehelpingthemostvulnerablecountriesadapttoclimatechange.Anditisclearlyuptothecurrentgenerationofleadersfromhigh-emittingnationstodecidewhethertheywanttoberememberedasclimatechangetyrantsorpioneers.46.TheauthoriscriticaloftheParisclimateagreementbecause.A）itisunfairtothoseclimate-vulnerablenationsB）itaimstokeeptemperaturerisebelow2℃onlyC）itisbeneficialtoonlyfewerthan4%ofcountriesD）itburdensdevelopedcountrieswiththesoleresponsibility47.Whydoestheauthorcallsomedevelopedcountriesclimate“free-riders”?A）Theyneedn’tworryaboutthefoodandwatertheyconsume.B）Theyarebetterabletocopewiththeglobalclimatechange.C）Theyhardlypayanythingfortheproblemstheyhavecaused.D）Theyarefreefromthegreenhouseeffectsaffecting“forcedriders”.48.Whydoestheauthorcomparethe“forcedriders”tosecond-handsmokers?A）Theyhavelittleresponsibilityforpublichealthproblems.B）Theyarevulnerabletounhealthyenvironmentalconditions.C）Theyhavetobearconsequencestheyarenotresponsiblefor.D）Theyareunawareofthepotentialriskstheyareconfronting.49.Whatdoestheauthorsayaboutthe$100billionfunding?A）Itwillmotivateallnationstoreducecarbonemissions.B）Thereisnofinalagreementonwhereitwillcomefrom.C）Thereisnoclarificationofhowthemoneywillbespent.D）Itwilleffectivelyreducegreenhouseemissionsworldwide.50.WhaturgentactionmustbetakentorealisetheParisclimateagreement?A）Encouraginghigh-emittingnationstotaketheinitiative.B）Callingonallthenationsconcernedtomakejointefforts.C）Pushingthecurrentworldleaderstocometoaconsensus.D）Puttingineffectthepoliciesintheagreementatonce.PassageTwoQuestions51to55arebasedonthefollowingpassage.Teenagersatriskofdepression,anxietyandsuicideoftenweartheirtroubleslikeaneon（霓虹灯）sign.Theirriskybehaviors—drinkingtoomuchalcohol,usingillegaldrugs,smokingcigarettesandskippingschool—canalertparentsandteachersthatseriousproblemsarebrewing.Butanewstudyfindsthatthere’sanothergroupofadolescentswhoareinnearlyasmuchdangerofexperiencingthesamepsychiatricsymptoms:teenswhousetonsofmedia,don’tgetenoughsleepandhaveasedentary（不爱活动的）lifestyle.Ofcourse,thatmaysoundlikeadescriptionofeveryteenagerontheplanet.Butthestudywarnsthatitisteenagerswhoengageinallthreeofthesepracticesintheextremewhoaretrulyinjeopardy.Becausetheirbehaviorsarenotusuallyseenasaredflag,theseyoungpeoplehavebeendubbedthe“invisiblerisk”groupbythestudy’sauthors.“Insomewaysthey’reatgreaterriskoffallingthroughthecracks,”saysresearcherVladimirCarli.“Whilemostparents,teachersandclinicianswouldreacttoanadolescentusingdrugsorgettingdrunk,theymayeasilyoverlookteenagerswhoareengagingininconspicuousbehaviors.”Thestudy’sauthorssurveyed12,395studentsandanalyzednineriskbehaviors,includingexcessivealcoholuse,illegaldruguse,heavysmoking,highmediauseandtruancy（逃学）.Theiraimwastodeterminetherelationshipbetweentheseriskbehaviorsandmentalhealthissuesinteenagers.About58%ofthestudentsdemonstratednoneorfewoftheriskbehaviors.Some13%scoredhighonallnineoftheriskbehaviors.And29%,the“invisiblerisk”group,scoredhighonthreeinparticular:Theyspentfivehoursadayormoreonelectronicdevices.Theysleptsixhoursanightorless.Andtheyneglected“otherhealthyactivities.”Thegroupthatscoredhighonallnineoftheriskbehaviorswasmostlikelytoshowsymptomsofdepression;inall,nearly15%ofthisgroupreportedbeingdepressed,comparedwithjust4%ofthelow-riskgroup.Buttheinvisiblegroupwasn’tfarbehindthehigh-riskset,withmorethan13%ofthemexhibitingdepression.ThefindingscaughtCarlioffguard.“Wewereverysurprised,”hesays.“Thehigh-riskgroupandlow-riskgroupareobvious.Butthis