2020年12月六級(jí)真題（第1套）

淘寶店鋪：光速考研工作室年12月英語六級(jí)第1套PartIWriting(30minutes)Directions:Forthispart,youareallowed30minutestowriteanessayonwhystudentsshouldbeencouragedtodevelopcreativity.Youshouldwriteatleast150wordsbutnomorethan200words.PartIIListeningComprehension(30minutes)SectionADirections:Inthissection,youwillheartwolongconversations.Attheendofeachconversation,youwillhearfourquestions.Boththeconversationandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA),B),C)andD).ThenmarkthecorrespondingletteronAnswerSheet1withasinglelinethroughthecentre.Questions1to4arebasedontheconversationyouhavejustheard.1. A)Herhousehasnotbeenrepairedintime. B)Shehasfailedtoreachthemanageragain. C)Herclaimhasbeencompletelydisregarded. D)Shehasnotreceivedanyletterfromtheman.2. A)Thegroundflooroftheircottagewasflooded. B)Theircaravanwaswashedawaybytheflood. C)Theirentirehousewasdestroyedbytheflood. D)Theroofoftheircottagecollapsedintheflood.3. A)Thewoman’smisreadingoftheinsurancecompany’sletter. B)Thewoman’signoranceoftheinsurancecompany’spolicy. C)Thewoman’sinaccuratedescriptionofthewholeincident. D)Thewoman’sfailuretopayherhouseinsuranceintime.4. A)Filealawsuitagainsttheinsurancecompany. B)TalktothemanagerofSafeHouseInsurance. C)Consultherlawyerabouttheinsurancepolicy. D)Revisethetermsandconditionsofthecontract.Questions5to8arebasedontheconversationyouhavejustheard.5. A)TheyworkindifferentfieldsofAItechnology. B)TheydisagreeaboutthefutureofAltechnology. C)Theydiffergreatlyintheirknowledgeofmoderntechnology. D)Theyarebothworriedaboutthenegativeimpactoftechnology.6. A)SimplywritingAlsoftware. B)Stimulatingandmotivating. C)Lesstime-consumingandfocusingoncreation. D)Moredemandingandrequiringspecialtraining.7. A)Therecouldbejobsnobodywantstodo. B)Digitallifecouldreplacehumancivilization. C)Humanswouldbetiredofcommunicatingwithoneanother. D)Oldpeoplewouldbetakencareofsolelybyunfeelingrobots.8. A)Lifewillbecomelikeasciencefictionfilm. B)Itwilltakeawayhumans’jobsaltogether. C)Chipswillbeinsertedinhumanbrains. D)Itwillbesmarterthanhumanbeings.SectionBDirections:Inthissection,youwillheartwopassages.Attheendofeachpassage,youwillhearthreeorfourquestions.Boththepassageandthequestionswillbespokenonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA),B),C)andD).ThenmarkthecorrespondingletteronAnswerSheet1withasinglelinethroughthecentre.Questions9to11arebasedonthepassageyouhavejustheard.9. A)Restrainthemselvesfromhigh-riskinvestments. B)Saveone-fifthoftheirnetmonthlyincome. C)Investshrewdlyinlucrativebusinesses. D)Trytoearnasmuchmoneyaspossible.10. A)Startbydoingsomethingsmall. C)Trytosticktotheirinitialplan. B)Askaclosefriendforadvice. D)Cut20%oftheirdailyspending.11. A)Anoptimisticattitude. C)Apropermindset. B)Anambitiousplan. D)Akeeninterest.Questions12to15arebasedonthepassageyouhavejustheard.12. A)Shewasuninterestedinadvertising. C)Shewasunhappywithfashiontrends. B)Shefoundheroutfitinappropriate. D)Sheoftencheckedherselfinamirror.13. A)Tosavethetroubleofchoosingauniqueoutfiteveryday. B)Tomeettheexpectationsoffashion-consciousclients. C)Tokeepupwiththecurrenttrends. D)Tosavetheexpensesonclothing.14. A)Itenhancespeople’sabilitytoworkindependently. B)Ithelpspeoplesucceedinwhatevertheyaredoing. C)Itmattersalotinjobsinvolvinginteractionwithothers. D)Itboostsone’sconfidencewhenlookingforemployment.15. A)Designtheirownuniformtoappearunique. B)Wearclassicpiecestoimpresstheirclients. C)Fighttheever-changingtrendsinfashion. D)Dowhateverispossibletolooksmart.SectionCDirections:Inthissection,youwillhearthreerecordingsoflecturesortalksfollowedbythreeorfourquestions.Therecordingswillbeplayedonlyonce.Afteryouhearaquestion,youmustchoosethebestanswerfromthefourchoicesmarkedA),B),C)andD).ThenmarkthecorrespondingletteronAnswerSheet1withasinglelinethroughthecentre.Questions16to18arebasedontherecordingyouhavejustheard.16. A)Theirobsessionwithconsumption. C)Theever-increasingcostsofhousing. B)Theirfailuretoaccumulatewealth. D)Thedeteriorationoftheenvironment.17. A)Thingsthatareraretofind. C)Thingsthatboostefficiency. B)Thingsthatcostlessmoney. D)Thingsthatwecherishmost.18. A)Theyservemultiplepurposes. C)Theyaremostlydurable. B)Theybenefittheenvironment. D)Theyareeasilydisposable.Questions19to22arebasedontherecordingyouhavejustheard.19. A)Allrespondentswereafraidofmakingahighexpenseclaim. B)Anumberofrespondentsgaveanaverageanswerof400miles. C)Over10%oftherespondentsliedaboutthedistancetheydrove. D)Mostoftherespondentsgotcompensatedfordriving384miles.20. A)Theyrespondedtocolleagues’suspicion. B)Theycaredaboutotherpeople’sclaims. C)Theywantedtoprotecttheirreputation. D)Theyendeavoredtoactuallybehonest.21. A)Theyseempositive. C)Theyareillustrative. B)Theyseemintuitive. D)Theyareconclusive.Questions23to25arebasedontherecordingyouhavejustheard.22. A)Deteriorationinthequalityofnewmusic. B)Insightsintothefeaturesofgoodmusic. C)Olderpeople’schangingmusicaltastes. D)Olderpeople’saversiontonewmusic.23. A)Theynolongerlistentonewmusic. B)Theyfindallmusicsoundsthesame. C)Theycanmakesubtledistinctionsaboutmusic. D)Theyseldomlistentosongsreleasedintheirteens.24. A)Themoreyouareexposedtosomething,themorefamiliarit’llbetoyou. B)Themoreyouareexposedtosomething,thedeeperyou’llunderstandit. C)Themoreyouexperiencesomething,thelongeryou’llrememberit. D)Themoreyouexperiencesomething,thebetteryou’llappreciateit.25. A)Teenagers’memoriesaremorelasting. B)Teenagers’emotionsaremoreintense. C)Teenagersaremuchmoresensitive. D)Teenagersaremuchmoresentimental.PartIIIReadingComprehension(40minutes)SectionADirections:Inthissection,thereisapassagewithtenblanks.Youarerequiredtoselectonewordforeachblankfromalistofchoicesgiveninawordbankfollowingthepassage.Readthepassagethroughcarefullybeforemakingyourchoices.Eachchoiceinthebankisidentifiedbyaletter.PleasemarkthecorrespondingletterforeachitemonAnswersheet2withasinglelinethroughthecentre.Youmaynotuseanyofthewordsinthebankmorethanonce.Theideaoftaxingthingsthatarebadforsocietyhasapowerfulallure.Itoffersthepossibilityofadoublebenefit—26harmfulactivities,whilealsoprovidingthegovernmentwithrevenue.Takesintaxes.Taxesonalcoholmakeitmoreexpensivetogetdrunk,whichreducesexcessivedrinkingand27driving.Atthesametime,theyprovidestateandlocalgovernmentswithbillionsofdollarsofrevenue.Tobaccotaxes,whichgeneratemorethantwiceasmuch,haveproven28inthedeclineofsmoking,whichhassavedmillionsoflives.Taxescanalsobeanimportanttoolforenvironmentalprotection,andmanyeconomistssaytaxingcarbonwouldbethebestwaytoreducegreenhousegasemissions.Economictheorysaysthatunlikeincomeorsalestaxes,carbontaxescanactuallyincreaseeconomicefficiency;becausecompaniesthat__29_carbondioxideintotheskydon’tpaythecostsoftheclimatechangetheycause,carbontaxeswouldrestoretheproper30tothemarket.Inreality,carbontaxesalonewon’tbeenoughtohaltglobalwarming,buttheywouldbeausefulpartofanyclimateplan.What’smore,therevenuefromthistax,whichwould31behundredsofbillionsofdollarsperyear,couldbehandedouttocitizensasa32orusedtofundgreeninfrastructureprojects.Similarly,awealthtaxhasbeenputforwardasawaytoreduceinequalitywhileraisingrevenue.Therevenuefromthistax,whichsomeexperts33willbeover$4trillionperdecade,wouldbedesignatedforhousing,childcare,healthcareandothergovernmentbenefits.Ifyoubelieve,asmanydo,thatwealthinequalityis34bad,thenthesetaxesimprovesocietywhilealso35governmentcoffers(金庫).A) discouragingB) dividendC) emotionalD) fragmentsE) impairedF) imprisonedG) incentivesH) inherentlyI) initiallyJ) instrumentalK) mergingL) predictM) probablyN) pumpO) swellingSectionBDirections:Inthissection,youaregoingtoreadapassagewithtenstatementsattachedtoit.Eachstatementcontainsinformationgiveninoneoftheparagraphs.Identifytheparagraphfromwhichtheinformationisderived.Youmaychooseaparagraphmorethanonce.Eachparagraphismarkedwithaletter.AnswerthequestionsbymarkingthecorrespondingletteronAnswersheet2.TheChallengesforArtificialIntelligenceinAgricultureA)Agroupofcornfarmersstandshuddledaroundanagronomist(農(nóng)學(xué)家)andhiscomputeronthesideofanirrigationmachineincentralSouthAfrica.Theagronomisthasjustflownoverthefieldwithahybridunmannedaerialvehicle(UAV)thattakesoffandlandsusingpropellersyetmaintainsdistanceandspeedforscanningvasthectaresoflandthroughtheuseofitsfixedwings.B)TheUAVisfittedwithafourspectralbandprecisionsensorthatconductsonboardprocessingimmediatelyaftertheflight,allowingfarmersandfieldstafftoaddress,almostimmediately,anycropabnormalitiesthatthesensormayhaverecorded,makingthedatacollectiontrulyreal-time.C)Inthisinstance,thefarmersandagronomistarelookingtospecializedsoftwaretogivethemanaccurateplantpopulationcount.It’sbeen10dayssincethecornemergedandthefarmerwantstodetermineifthereareanypartsofthefieldthatrequirereplantingduetoalackofemergenceorwinddamage,whichcanbesevereintheearlystagesofthesummerrainyseason.D)Atthisgrowthstageoftheplant’sdevelopment,thefarmerhasanother10daystoconductanyreplantingbeforethemajorityofhisfertilizerandchemicalapplicationsneedtooccur.Oncethesehavebeenapplied,itbecomeseconomicallyunviabletotakecorrectiveaction,makinganyfurthercollecteddatahistoricalandusefulonlytoinformfuturepracticesfortheseasontocome.E)Thesoftwarecompletesitsprocessinginunder15minutesproducingaplantpopulationcountmap.It’sdifficulttograspjusthowimpressivethisis,withoutunderstandingthatjustoverayearagoitwouldhavetakenthreetofivedaystoprocesstheexactsamedataset,illustratingtheadvancementsthathavebeenachievedinprecisionagricultureandremotesensinginrecentyears.WiththesoftwarehavingbeendevelopedintheUnitedStatesonthesamevarietyofcropsinseeminglysimilarconditions,theagronomistfeelsconfidentthatthesoftwarewillproduceanearaccurateresult.F)Asthemapappearsonthescreen,theagronomist’sfacebeginstodrop.Havingwalkedthroughtheplantedrowsbeforetheflighttogainaphysicalunderstandingofthesituationontheground,heknowstheinstantheseesthedataonhisscreenthattheplantcountisnotcorrect,andsodothefarmers,evenwiththeirlimitedunderstandingofhowtoreadremotesensingmaps.G)Hypothetically,itispossibleformachinestolearntosolveanyproblemonearthrelatingtothephysicalinteractionofallthingswithinadefinedorcontainedenvironmentbyusingartificialintelligenceandmachinelearning.H)Remotesensorsenablealgorithms(算法)tointerpretafield’senvironmentasstatisticaldatathatcanbeunderstoodandusefultofarmersfordecision-making.Algorithmsprocessthedata,adaptingandlearningbasedonthedatareceived.Themoreinputsandstatisticalinformationcollected,thebetterthealgorithmwillbeatpredictingarangeofoutcomes.Andtheaimisthatfarmerscanusethisartificialintelligencetoachievetheirgoalofabetterharvestthroughmakingbetterdecisionsinthefield.I)In2011,IBM,throughitsR&DHeadquartersinHaifa,Israel,launchedanagriculturalcloud-computingproject.Theproject,incollaborationwithanumberofspecializedITandagriculturalpartners,hadonegoalinmind—totakeavarietyofacademicandphysicaldatasourcesfromanagriculturalenvironmentandturntheseintoautomaticpredictivesolutionsforfarmersthatwouldassisttheminmakingreal-timedecisionsinthefield.J)InterviewswithsomeoftheIBMprojectteammembersatthetimerevealedthattheteambelieveditwasentirelypossibleto“algorithm”agriculture,meaningthatalgorithmscouldsolveanyproblemintheworld.Earlierthatyear,IBM’scognitivelearningsystem,Watson,competedinthegameJeopardyagainstformerwinnersBradRutterandKenJenningswithastonishingresults.Severalyearslater,Watsonwentontoproduceground-breakingachievementsinthefieldofmedicine.K)Sowhydidtheprojecthavesuchsuccessinmedicinebutnotagriculture?Becauseitisoneofthemostdifficultfieldstocontainforthepurposeofstatisticalquantification.Evenwithinasinglefield,conditionsarealwayschangingfromonesectiontothenext.There’sunpredictableweather,changesinsoilquality,andtheever-presentpossibilitythatpestsanddiseasesmaypayavisit.Growersmayfeeltheirprospectsaregoodforanupcomingharvest,butuntilthatdayarrives,theoutcomewillalwaysbeuncertain.L)Bycomparison,ourbodiesareacontainedenvironment.Agriculturetakesplaceinnature,amongecosystemsofinteractingorganismsandactivity,andcropproductiontakesplacewithinthatecosystemenvironment.Buttheseecosystemsarenotcontained.Theyaresubjecttoclimaticoccurrencessuchasweathersystems,whichimpactuponhemispheresasawhole,andfromcontinenttocontinent.Therefore,understandinghowtomanageanagriculturalenvironmentmeanstakingliterallymanyhundredsifnotthousandsoffactorsintoaccount.M)WhatmayoccurwiththesameseedandfertilizerprogramintheUnitedStates’MidwestregionisalmostcertainlyunrelatedtowhatmayoccurwiththesameseedandfertilizerprograminAustraliaorSouthAfrica.Afewfactorsthatcouldimpactonvariationwouldtypicallyincludethemeasurementofrainperunitofacropplanted,soiltype,patternsofsoildegradation,daylighthours,temperatureandsoforth.N)Sotheproblemwithdeployingmachinelearningandartificialintelligenceinagricultureisnotthatscientistslackthecapacitytodevelopprogramsandprotocolstobegintoaddressthebiggestofgrowers’concerns;theproblemisthatinmostcases,notwoenvironmentswillbeexactlyalike,whichmakesthetesting,validationandsuccessfulrolloutofsuchtechnologiesmuchmorelaboriousthaninmostotherindustries.O)Practically,tosaythatAIandMachineLearningcanbedevelopedtosolveallproblemsrelatedtoourphysicalenvironmentistobasicallysaythatwehaveacompleteunderstandingofallaspectsoftheinteractionofphysicalormaterialactivityontheplanet.Afterall,itisonlythroughourunderstandingof“thenatureofthings”thatprotocolsandprocessesaredesignedfortherationalcapabilitiesofcognitivesystemstotakeplace.And,althoughAIandMachineLearningareteachingusmanythingsabouthowtounderstandourenvironment,wearestillfarfrombeingabletopredictcriticaloutcomesinfieldslikeagriculturepurelythroughthecognitiveabilityofmachines.P)Backedbytheventurecapitalcommunity,whichisnowinvestingbillionsofdollarsinthesector,mostagriculturaltechnologystartupstodayarepushedtocompletedevelopmentasquicklyaspossibleandthenencouragedtofloodthemarketasquicklyaspossiblewiththeirproducts.Q)Thisusuallyresultsinafailureofaproduct,whichleadstoskepticismfromthemarketanddeliversablowtotheintegrityofMachineLearningtechnology.Inmostcases,theproblemisnotthatthetechnologydoesnotwork,theproblemisthatindustryhasnottakenthetimetorespectthatagricultureisoneofthemostuncontainedenvironmentstomanage.Fortechnologytotrulymakeanimpactonagriculture,moreeffort,skills,andfundingisneededtotestthesetechnologiesinfarmers’fields.R)Thereishugepotentialforartificialintelligenceandmachinelearningtorevolutionizeagriculturebyintegratingthesetechnologiesintocriticalmarketsonaglobalscale.Onlythencanitmakeadifferencetothegrower,whereitreallycounts.36. Farmerswillnotprofitfromreplantingoncetheyhaveappliedmostofthefertilizerandotherchemicalstotheirfields.37. Agriculturediffersfromthemedicalscienceofthehumanbodyinthatitsenvironmentisnotacontainedone.38. Theagronomistissurethathewillobtainanearaccuratecountofplantpopulationwithhissoftware.39. Theapplicationofartificialintelligencetoagricultureismuchmorechallengingthantomostotherindustries.40. EventhefarmersknowthedataprovidedbytheUAVisnotcorrect.41. Thepressureforquickresultsleadstoproductfailure,which,inturn,arousesdoubtsabouttheapplicabilityofAItechnologytoagriculture.42. Remotesensorsareaimedtohelpfarmersimprovedecision-makingtoincreaseyields.43. Thefarmerexpectsthesoftwaretotellhimwhetherhewillhavetoreplantanypartsofhisfarmfields.44. Agricultureprovesverydifficulttoquantifybecauseoftheconstantlychangingconditionsinvolved.45. Thesameseedandfertilizerprogrammayyieldcompletelydifferentoutcomesindifferentplaces.SectionCDirections:Thereare2passagesinthissection.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA),B),C)andD).YoushoulddecideonthebestchoiceandmarkthecorrespondingletteronAnswerSheet2withasinglelinethroughthecentre.PassageOneQuestions46to50arebasedonthefollowingpassage.Whatistheplaceofartinacultureofinattention?RecentvisitorstotheLouvrereportthattouristscannowspendonlyaminuteinfrontoftheMonaLisabeforebeingaskedtomoveon.Muchofthattime,forsomeofthem,isspenttakingphotographsnotevenofthepaintingbutofthemselveswiththepaintinginthebackground.Oneviewisthatwehavedemocratisedtourismandgallery-goingsomuchthatwehavemadeiteffectivelyimpossibletoappreciatewhatwe’vetravelledtosee.Inthisoversubscribedsociety,experiencebecomesacommoditylikeanyother.TherearequeuestoclimbMt.JolmoLungmaaswellastoseefamouspaintings.Leisure,thusconceived,ishardlabour,andreturningtoworkbecomesawell-earnedbreakfromtheordeal.Whatgetslostinthisindustrialisedhasteisthequalityoflooking.Consideranextremeexample,thelatephilosopherRichardWollheim.WhenhevisitedtheLouvrehecouldspentasmuchasfourhourssittingbeforeapainting.Thefirsthour,heclaimed,wasnecessaryformisperceptionstobeeliminated.Itwasonlythenthatthepicturewouldbegintodiscloseitself.Thisseemsunthinkabletoday,butitisstillpossibletoorganise.Eveninthebusiestmuseumstherearemanyroomsandmanypicturesworthhoursofcontemplationwhichthecrowdslargelyignore.Sometimesthelargestcrowdsarepartlytheproductsofbadmanagement;theMonaLisaissuchahurriedexperiencetodaypartlybecausethemuseumisbeingreorganised.TheUffiziinFlorence,anothersiteofculturalpilgrimage,hascutitsentryqueuesdowntosevenminutesbyclevermanagement.Andtherearesomeformsofart,thosedesignedtobespectaclesaswellasobjectsofcontemplation,whichcanworkperfectlywellinthefaceofhugecrowds.OlafurEliasson’scurrentTateModernshow,forinstance,mightseemnothingmorethananentertainment,overrunasitiswithkidsromping(喧鬧地玩耍)infogroomsandspraymistinstallations.Butit’smorethanthat:whereEliassonisathismostentertaining,heisathismostserioustoo,andhisdisorientinginstallationsbringhometherealityofthedestructiveeffectswearehavingontheplanet—notleastwhatwearedoingtotheglaciersofEliasson’sbelovedIceland.MarcelProust,anotherloveroftheLouvre,wrote:“Itisonlythroughartthatwecanescapefromourselvesandknowhowanotherpersonseestheuniverse,whoselandscapeswouldotherwisehaveremainedasunknownasanyonthemoon.”Ifanyartremainsworthseeing,itmustleadustosuchescapes.Butaminuteinfrontofapaintinginahurriedcrowdwon’tdothat.46. WhatdoesthesceneattheLouvredemonstrateaccordingtotheauthor?A) Theenormousappealofagreatpieceofartisticworktotourists.B) Thenearimpossibilityofappreciatingartinanageofmasstourism.C) Theever-growingcommercialvalueoflong-cherishedartisticworks.D) Therealdifficultyingettingaglimpseatamasterpieceamidacrowd.47. WhydidthelatephilosopherRichardWollheimspendfourhoursbeforeapicture?A) Ittakestimetoappreciateapieceofartfully.B) Itisquitecommontomisinterpretartisticworks.C) Thelongerpeoplecontemplateapicture,themorelikelytheywillenjoyit.D) Themoretimeonespendsbeforeapainting,themorevaluableonefindsit.48. WhatdoesthecaseoftheUffiziinFlorenceshow?A) Artworksinmuseumsshouldbebettertakencareof.B) Sitesofculturalpilgrimagearealwaysfloodedwithvisitors.C) Goodmanagementiskeytohandlinglargecrowdsofvisitors.D) Largecrowdsofvisitorscausemanagementproblemsformuseums.49. WhatdowelearnfromOlafurEliasson’scurrentTateModernshow?A) Childrenlearntoappreciateartworksmosteffectivelywhiletheyareplaying.B) Itispossibletocombineentertainmentwithappreciationofseriousart.C) Artworksabouttheenvironmentappealmosttoyoungchildren.D) Someformsofartcanaccommodatehugecrowdsofvisitors.50. WhatcanartdoaccordingtoMarcelProust?A) Enableustoliveamuchfullerlife.B) Allowustoescapetheharshreality.C) Helpustoseetheworldfromadifferentperspective.D) Urgeustoexploretheunknowndomainoftheuniverse.PassageTwoQuestions51to55arebasedonthefollowingpassage.Everyfiveyears,thegovernmenttriestotellAmericanswhattoputintheirbellies.Eatmorevegetables.Dialbackthefats.It’sallbasedonthebestavailablescienceforleadingahealthylife.Butthebestavailablesciencealsohasalottosayaboutwhatthosefoodchoicesdototheenvironment,andsomeresearchersareannoyedthatnewdietaryrecommendationsoftheUSDA(UnitedStatesDepartmentofAgriculture)releasedyesterdayseemtoutterlyignorethatfact.Broadly,the2016-2020dietaryrecommendationsaimforbalance:Morevegetables,leanermeatsandfarlesssugar.ButAmericansconsumemorecaloriespercapitathanalmostanyothercountryintheworld.SothethingsAmericanseathaveahugeimpactonclimatechange.Soiltillingreleasescarbondioxide,anddeliveryvehiclesemitexhaust.Thegovernment’sdietaryguidelinescouldhavedonealottolowerthatclimatecost.Notjustbecauseoftheirpositionofauthority:Theguidelinesdrivebillionsofdollarsoffoodproductionthroughfederalprogramslikeschoollunchesandnutritionassistancefortheneedy.Onitsown,plantandanimalagriculturecontributes9percentofallthecountry’sgreenhousegasemissions.That’snotcountingthefuelburnedintransportation,processing,refrigeration,andotherwaypointsbetweenfarmandbelly.Redmeatsareamongthebiggestandmostnotoriousemitters,buttruckingasaladfromCaliforniatoMinnesotainJanuaryalsocarriesasignificantburden.Andgreenhousegasemissionsaren’tthewholestory.Foodproductionisthelargestuseroffreshwater,largestcontributortothelossofbiodiversity,andamajorcontributortousingupnaturalresources.AllofthesepointsandmoreshowedupintheDietaryGuidelinesAdvisoryCommittee’sscientificreport,releasedlastFebruary.MiriamNelsonchairedthesubcommitteeinchargeofsustainabilityforthereport,andisdisappointedthateatinglessmeatandbuyinglocalfoodaren’tinthefinalproduct.“Especiallyifyouconsiderthateatinglessmeat,especiallyredandprocessed,hashealthbenefits,”shesays.Sowhathappened?Theofficialresponseisthatsustainabilityfallstoofaroutsidetheguidelines’officialscope,whichisto