精选江苏省启东市汇龙中学2023届高三高考最后一卷英语试题-Word版无答案

精选江苏省启东市汇龙中学2023届高三高考最后一卷英语试题-Word版无答案高考资源网〔〕，您身边的高考专家欢送广阔教师踊跃来稿，稿酬丰厚。高考资源网〔〕，您身边的高考专家欢送广阔教师踊跃来稿，稿酬丰厚。2023届汇龙中学最后一考英语考前须知:1.本试卷共8页,共五局部，总分值120分，考试时间120分钟。2.答题前，考生务必将学校、班级、姓名写在密封线内。第一局部：听力(共两节，总分值20分)第一节(共5小题；每题1分，总分值5分)听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最正确选项，并标在试卷的相应位置。听完每段对话后，你都有10秒钟的时间来答复有关小题和阅读下一小题。每段对话仅读一遍。1.Whatdressdoesthewomanget?A.Anorder-madedress.B.Ahand-madedress.C.Aself-madedress.2.Whathappenedintheafternoon?A.ThemantoldFredtomeetthematsix.B.TheroommatemetFredatsix.C.ThemantoldFred’sroommatetogiveFredthemessage.3.HowmuchisSusan’sDVD?A.$2.B.$3.C.$5.4.Wheredoesthewomanlivenow?A.InSingapore.B.InHongKong.C.InItaly.5.Whatdoesthemanthinkaboutthewoman’sdress?A.Itisstrange.B.Itistoolarge.C.Itisbeautiful.第二节(共15小题；每题1分，总分值15分)听下面5段对话或独白。每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最正确选项，并标在试卷的相应位置。听每段对话或独白前，你将有时间阅读各个小题，每题5秒钟；听完后，各小题将给出5秒钟的作答时间。每段对话或独白读两遍。听第6段材料，答复第6至8题。6.Whatistherelationshipbetweentheboyandthegirl?A.Friends.B.Classmates.C.Brotherandsister.7.WhydidMarybuyanewcellphoneforhergrandmother?A.Shebrokehergrandmother’scellphone.B.Hergrandmotherdoesnotliketheoldcellphone.C.Shewantstogivehergrandmotherafashionablecellphone.8.Whydoestheboythinkthedancingmachineisagreatpresent?A.Becauseitisnotexpensive.B.Becauseallthefamilycanuseit.C.Becausehisparentspaidforit.听第7段材料，答复第9至11题。9.Whatisthemaintopicoftheconversation?A.Watchingfootballgames.B.Meetingfootballplayers.C.Cheeringinthestadium.10.Whatdoweknowabouttheman?A.Hedoesn’tlikefootballatall.B.Heistoobusytogotothestadium.C.HelikeswatchingfootballgamesonTV.11.Whatdoesthewomanliketodo?A.Takephotosoffootballgameswithhercamera.B.Watchfootballgamesinthestadium.C.CheerforfavoriteteaminfrontofTV.听第8段材料，答复第12至14题。12.Howdoesthewomanfeelnow?A.Excited.B.Worried.C.Unhappy.13.WhatwasLindadoingwhentheyweredoingtheirhomework?A.WatchingTV.B.Listeningtomusic.C.Makingaphonecall.14.Whatdoesthemansuggestthewomandoatlast?A.Drinksomething.B.TalkwithLinda.C.SaysorrytoLinda.听第9段材料，答复第15至17题。15.Whatistheman’sdestination?A.SaltLakeCity,USA.B.NewYork,16.Howlongistheman’slayoverbetweenflights?A.Lessthananhour.B.Lessthantwohours.C.Morethanthreehours.17.Whatrequestdoesthemanmakeregardinghisflight?A.Heasksforaspecially-prepareddinner.B.Hewantsanaisleseat.C.Herequestsasmallbedforhisbaby.听第10段材料，答复第18至20题。18.Whatischeckedinthesecondtest?A.Youreyesight.B.Yourdriving.C.Yourknowledgeoftrafficregulations.19.Whatdoestheinstructionpermitallowyoutodo?A.Topracticedrivingwithanexperienceddriver.B.Tohavethemechanicalconditionofyourcarcheckedbythelicense.C.Tousethedriverlicenseasanidentificationcard.20.Whichofthefollowingstatementsistrueabouttheroadtest?A.Thelicenseofficeprovidesthetestsvehicle.B.Theexaminershowshowtostart,stoporpark.C.Theexaminerwatchesyoudrivinginyourcar.第二局部：英语知识运用(共两节，总分值35分)第一节：单项填空(共15小题，每题1分，总分值15分)请认真阅读下面各题，从题中所给的A、B、C、D四个选项中，选出最正确选项，并在答题卡上将该项涂黑。21.Theaccidentisareminderof_________potentialdangersinvolvedin________oilproductioninthisarea. A.the;the B.the;/ C./;the D./;/22.BeijingandShanghaihavereleasedtheirplanstograduallyallowstudentstotakecollegeentranceexams______theirparentsworkasmigrantworkers.A.

where B.when C.inwhich D.that23.OnewayforstudentstopreventH7N9fluvirusistoopenthewindowsoftheclassroomtoallowtheairto________.A.accumulateB.circulateC.illustrateD.accelerate24.Children,inmyopinion,________creativeabilityisunthinkablyrich,________isseldomtakennoticeofbyus,shouldbetrainedinthatarea.A.which;thatB.whose;whichC.which;whichD.whose;that25.________totheassociationofsuccesswithmoneythatthethoughtofgivingupgoodsalaryforanideaseemslikealittlebitcrazy.A.MostofusaremuchaccustomedB.SoaccustomedmostofusareC.SoaccustomedaremostofusD.Accustomedasmostofusare26.________thefactthatmanydriversareevertrained,wecannotstresstoomuchtheimportanceoftrafficsafety.A.ThankstoB.DespiteC.AsD.Although27.Wehavegotageneralideaofhowournewflatwillbedecorated,butnothing________atthemoment.A.ambiguousB.ambitiousC.concreteD.permanent28.One______takeitasasignofweaknesstoaskforhelpfromothers,becausenooneisperfect. A.mustn't B.couldn't C.wouldn't D.needn't29.Youcanspendyourfreetimeinourlibrary.Thereisareadingroom________morethan600students.A.seatsB.tobeseatedC.seatedD.seating30.—Goandhavegreatfun!Iwillcopewith___________youleavetomeproperly．—Thanksalot. A.why B.when C.what D.which31.—Idoenjoymypresentjobasanengineer.—Well,IwouldalsobeanengineerifI__________mymajorwhenIwasatcollege.A.couldhavechangedB.didn’tchangeC.hadn'tchangedD.weretochange32.—Lateagain! —Sorry.Iwas____________halfwayforhalfanhouronmywaytoworkthismorning． A.brokendown B.heldup C.cutdown D.closedup33.—Anyfashionnewsaboutskirts?—Yes.Thisseason'sshortskirtshavegainedpopularitynow,althoughthey________tobeshockingatfirst.A.havebeenthoughtB.werethoughtC.arethoughtD.hadthought34.Thegirlaswellasherclassmatesdislikesthathorribleandbleedingstory,______?A.doesn’tsheB.doesshe C.dotheyD.don’tthey35.—I'vedecidedtogobacktoschoolforsometraininginprogramming.—________.Whenwouldyouliketostart?A.GoodforyouB.UptoyouC.YoucanhaveitD.Igotyou第二节：完形填空(共20小题；每题1分，总分值20分)请认真阅读下面短文，从短文后各题所给的A、B、C、D四个选项中，选出最正确选项，并在答题卡上将该项涂黑。Whatisitthatyoulovetodobutneverfeelthatyougetitquiteright?Perhapsyoudon'teventryanymorebecauseyouthinkwhatyoudoisnot__36__enough.Discouragementseemstofollowusagoodpartofthetime,__37__whateveritisthatweworksoharddoing,itseemsthatthereis__38__someoneelsewhocandoitmuchbetter.Ihavealwaysenjoyedmusicanditis__39__tomethateverymusicianhasa__40__oftheirown.Myfather__41__severalinstrumentsandwhenheplayedwithothers,itwasnotdifficultto__42__hissoundinagroup.Whetheritwasguitaroranotherinstrument,hehadhisown__43__sound.I__44__readofamusicteacherwhocommentedtoadiscouragedstudent,“__45__elsecanmakethesoundthatyoumake.Thesoundthatyoumakemaynotbethesameassomeoneelse'sbutwhoistosaywhichis__46__．〞Itissaidthat,“__47__isintheeyeofthebeholder(观看者)，〞perhapsitcouldbesaidthat“adelightfulsoundisintheearofthe__48__．〞Everypersonhasadifferenttoneofvoicethat__49__onlytothem,__50__weallknowpeoplewithanunforgettablelaughorawayof__51__thatisuniquetothem.Itmightnotbethesoundofyourmusicoryourvoiceatall.It__52__bethewayyouwhistleorthesoundofyourfootsteps.Eachpersonhasa(n)__53__ontheworldinsomeway.Someoneelsecandowhatyoudo,buttheycannotdoit__54__thesamewaythatyoudoit.Thenexttimeyoufeel__55__，remember“Nobodyelsecanmakethesoundthatyoumake.〞36.A.easy B.hard C.simple D.good37.A.when B.although C.because D.if38.A.seldom B.sometimes C.never D.always39.A.satisfying B.interesting C.inspiring D.convincing40.A.gift B,song C.life D.sound41.A.created B.designed C.played D.checked42.A.pickout B.callup C.turndown D.giveoff43.A.special B.powerful C.perfect D.loud44.A.even B.yet C.once D.still45. A.Nobody B.Somebody C.Anybody D.Everybody46. A.bigger B.deeper C.better D.lower47. A.interest B.beauty C.patience D.honesty48. A.speaker B.receiver C.looker D.listener49. A.belongs B.adds C.adapts D.devotes50. A.but B.yet C.for D.and51. A.speaking B.walking C.jumping D.running52. A.must B.would C.might D.could53. A.effect B.opinion Cduty. D.choice54. A.carefully B.exactly C.cautiously D.seriously55. A.annoyed B.puzzled C.bothered D.discouraged第三局部：阅读理解(共15小题；每题2分，总分值30分)请认真阅读以下短文，从短文后各题所给的A、B、C、D四个选项中，选出最正确选项，并在答题卡上将该项涂黑。AThecommonChinesegreetingof“Nichilema？〞maysoonbereplacedbyanewgreeting:“Haveyoucleanedyourplate？〞OvertheSpringFestivalholidaytherewasabigefforttogetpeopletocurbtheirhabitoforderingtoomuchfoodinrestaurantsbecausealotofthatfoodendedupbeingwasted.Holidayeaterswereurgedto“cleantheirplates〞andwereaskedtotakeleftoverfoodhomein“doggybags〞．Theimpetusbehindthecampaignwasthestartlinggovernmentstatisticthatover200billionyuanisspenteveryyearonfoodthatendsupinthegarbagebin.Andinthemidstofallthiswaste,statisticsshowthat128millionpeoplearelivingbelowthepovertylineandgoinghungry.The“cleanyourplate〞campaignispartofaworldwideefforttostoppreciousfoodfrombeingwasted.TheUnitedNationsestimatesthat$1trillion(yes,that'saverybignumber)worthoffoodiswastedeachyear.Mostofthatislostduringfoodproductionandtransportation,butasignificantpercentageisattributedtowastebyconsumers.TheUnitedNationsEnvironmentProgram(UNEP)haslaunchedacampaigncalled“Think.Eat.Save.〞tomakepeopleawareoftheproblem.ChineseactressFanBingbingisanambassadorforUNEPandsheencouragedpeopletouploadpicturesoftheir“cleanplates〞toshowtheirsupportfortheprogram.Thousandsofpeoplerespondedanddemonstratedthattheyhadaclearconsciencetogoalongwiththeirfullstomaches.XiJinping,theChinesepresident,isalsourgingpeopletobelesswastefulandhetoldPartymemberstocutbackonextravagantholidaybanquetsandtobemorecarefulwhenspendingthepeople'smoney.Forsome,though,XiJinping'sandFanBingbing'sadmonitionsdon'tgofarenough.YuanLongping,anagriculturalscientist,causedastirbysayingthatwastingfoodshouldbetreatedasacrime.(Jailtimeforleftoverchickenfeet！？)Ifnotacrime,wastingfoodiscertainlyasinanditgoesagainstwhatXiJinpingcalls,“theChinesetraditionofbeingdiligentandthrifty.〞Havinga“cleanplate〞isjustatraditionalandresponsiblethingtodo.56.WhichstatementisNOTTRUEaccordingtothepassage?A.Over200billionyuaniswastedeveryyearonfoodaroundChina.B.It'squitecommonforChinesepeopletoordermorefoodthantheyneedinrestaurants.C.It'suniversallyacknowledgedthatwastingfoodisacrime.D.Fandidsomethingtopromotepeople'sawarenessofsavingfood.57.Theunderlinedword“admonition〞isclosestinmeaningto“________〞．A.demonstrationB.indicationC.warningD.criticism58.What'thebesttitleforthepassage?A.Foodisimportant.B.Haveyoucleanedyourplate?C.Jailtimeforleftoverchickenfeet！？D.Wastingfoodisacrime.BPrefacetothefourtheditionApracticalEnglishGrammarisintendedforintermediate(中级的)andpost－intermediatestudents.Wehopethatmoreadvancedlearnersandteacherswillalsofindituseful.Thebookisacomprehensivesurveyofstructuresandforms,writteninclearmodernEnglishandillustratedwithnumerousexamples.Areasofparticulardifficultyhavebeengivenspecialattention.Differencesbetweenconversationalusageandstrictgrammaticalformsareshownbuttheemphasisisonconversationalforms.Inthefourtheditionthemainchangesareasfollows.1.Explanationandexampleshavebeenbroughtuptodate.2.Thereisnowmoreinformationoncountableanduncountablenouns,attributiveandpredicativeadjectives,adverbsofplace,sentenceadverbs,cleftsentences,prepositions,conjunctives,modalverbs,perfecttenses,infinitiveconstructions,thepassive,purposeclausesandnouns.3.Somematerialhasbeenrearrangedtomakecomparisonseasier.Forexample,partsofchaptersoncan,may,mustetc.arenowgroupedbyfunctions;verbsoflikingandpreferencehaveachaptertothemselves;suggestionsandinvitationshavejoinedthechapteroncommands,requestsandadvice.4.Thecontentslistnowsummarieseveryeditionheading,andthereisanewindexcontainingmanymoreentriesreferences.Inthiseditionthesign“～〞isfrequentlyusedtoshowachangeofspeakerinexamplesofdialogue.Notealsothatalthoughthesign“＝〞sometimesconnectstwowordsorexpressionswiththesamemeaning,itisoftenusedmorefreely,e．g.toindicateatransformationfromactivetopassiveordirecttoindirectspeech.WewishtothankallatOxfordUniversityPresswhohaveassistedinthepreparationofthefourthedition.WewouldalsoliketothankProfessorEgawaofNihonUniverstity,Japan,ProfessorReneDirvenofDuisburgUniversity,London,November1985A.J.T.,A．VM59.Thegrammarbookmentionedinthispassageisnotsuitablefor________．A.amiddleschoolteacherB.acollegestudentC.aseniorhighstudentD.aprimaryschoolstudent60.Accordingtothepassage,weknowthatthisgrammarbook________．A.comparesmodernEnglishwitholdEnglishB.givesalargenumberofexamplestoreducedifficultyC.attachesmoreimportancetoconversationalformsD.payslittleattentiontostrictgrammaticalforms61.WhichofthefollowingstatementsaboutthechangesisTRUE?A.ThisbookkeepsupwiththelatestusagesoftheAmericanEnglishlanguage.B.Thiseditionoffersmoreinformationaboutpronouns.C.Oneparticularchapterdiscussesverbslike“care,like,love,hate,prefer,wish〞．D.It'snoteasyforustofindtheinformationweneedinthisbook.62.Whenyouseethislineinthebook,“Didyougetaticket?～Yes,Imanagedtogetone〞，wecanunderstandthat________．A.thetwopartsbeforeandafterthesign“～〞meanthesameB.thetopicischangedinthepartafterthesign“～〞C.thesecondspeakerrepeatswhatthefirstspeakersaysD.thetwopartsbeforeandafter“～〞aresaidbytwodifferentpeopleCAntidepressant(抗忧郁)drugssuchasProzacwereviewedintheearly1900'saswonderpillsthatwouldremovedepressivebluesforgood.Butinthepastfiveyears,growingscientificevidencehasshownthesedrugsworkforonlyaminorityofpeople.Andnowaresearchjournalsaysthattheseantidepressantscanmakemanypatients'depressionworse.Thisalarmingsuggestioncentresontheverychemicalthatistargetedbyantidepressants－serotonin(血清素).DrugssuchasProzacareknownasselectiveserotoninre－uptakeinhibitors(orSSRIs).Theiraimistoincreasethelevelofthis“feel－good〞chemicalinthebrain.Butthenewresearch,publishedinthejournalFrontiersInEvolutionaryPsychology,pointsoutthatserotoninislikeachemicalSwissArmyknife,performingaverywiderangeofjobsinthebrainandbody.Andwhenwestartchangingserotoninlevelspurposely,itmaycauseawiderangeofunwantedeffects.Thesecanincludedigestiveproblemsandevenearlydeathsinolderpeople,accordingtothestudy'sleadresearcherPaulAndrews.“Weneedtobemuchmorecautiousaboutuseofthesedrugs，〞saysAndrews,anassistantprofessorofevolutionarypsychologyatMcMasterUniversityinOntario,Canada.Previousresearchhassuggestedthatthedrugsprovidelittlebenefitformostpeoplewithmilddepression,andactivelyhelponlyafewofthemostseverelydepressed.FamouspsychologistIrvingKirschhasfoundthatformanypatients,SSRIsarenomoreeffectivethanaplacebopill.Aresearchin2023onDanishchildrenfoundasmall,butsignificant,increaseintheriskofheartproblemsamongbabieswhosemothershadusedSSRIsinearlypregnancy.Thekeytounderstandingtheseside－effectsisserotonin,saysAndrews.SerotoninisalsothereasonwhypatientscanoftenendupfeelingstillmoredepressedaftertheyhavefinishedacourseofSSRIdrugs.HearguesthatSSRIantidepressantsdisturbthebrain,leavingthepatientanevengreaterdepressionthatbefore.“Serotoninisanancientchemical，〞saysAndrews,“Itisregulatingmanydifferentprocesses,andwhenyoudisturbthesethings,youcanexpectthatitisgoingtocausesomeharm.〞StaffordLightman,professorofmedicineattheUniversityofBristol,andaleadingUKexpertinbrainchemicalsandhormones,saysAndrews'reviewhighlightssomeimportantproblems,yetitshouldalsobetakenwithapinchofsalt.“Thisreportisdoingtheoppositeofwhatdrugcompaniesdo，〞hesays.“Drugcompaniesselectivelypresentallthepositivesintheirresearch,whilethissearchselectivelypresentsallthenegativesthatcanbefound.Nevertheless,Andrews'studyisusefulinthatitisalwaysworthpointingoutthatthereisadownsidetoanymedicine.〞ProfessorLightmanaddsthatthereisstillagreatdealwedon'tknowaboutSSRIs—notleastwhattheyactuallydoinourbrains.Whenitcomestounderstandingwhythedrugsworkonlyforalimitedpartofpatients,U．S.scientiststhinktheymightnowhavetheanswer.Theythinkthatinmanydepressedpatients,it'snotonlythelackoffeel－goodserotonincausingtheirdepression,butalsoafailureintheareaofthebrainthatproducesnewcellsthroughoutourlives.Thisarea,thehippocampus,isalsoresponsibleforregulatingmoodandmemory.Researchsuggeststhatinpatientswhosehippocampushaslosttheabilitytoproducenewcells,SSRIsdonotbringanybenefit.63.Accordingtoparagraph2,serotonin,likeachemicalSwissArmyknife,can________.A.makemanypatients'depressionworseB.causeawiderangeofunwantedeffectsC.affecthumanbodyandbraininvariouswaysD.providelittlebenefitformostdepressedpeople64.InStaffordLightman'sopinion,________．A.drugcompaniesdon'tknowthenegativeeffectofantidepressantsB.AndrewsfocusedondifferentthingsfromthedrugcompaniesC.scientistshavefoundwhatSSRIsdointhebrainD.Andrews'researchhasnomedicalvalue65.WhichofthefollowingisTRUEaboutSSRIs?A.Theyareusedtoincreasethe“feel－good〞chemicalinthebrain.B.Theycanworkevenwhenthehippocampuscan'tproducenewcells.C.Theycreateariskofheartproblemsinpregnantwomen.D.Theyareresponsibleforcontrollingmoodandmemory.66.Whatisthetextmainlyabout?A.Theaimofdrugcompanies.B.ThefunctionofSSRIs.C.Theside－effectsofantidepressants.D.Thecauseofdepression.DDetectiveKeelingtookhisclient—agood－lookingladyintothebackyardofthestoretogether.Theladyopenedadoorinthewallandtheyenteredthesmallroombehindthestore.Theycrossedtheroomtoalockeddoor.Mr.Keelingtooksomespecialkeysfromhispocket.Momentslater,oneofthekeysunlockedthedoor.Theladywentintothestore.Shesaidshewouldhideunderthetabletokeepwatchonherhusband.Mr.Keelingdidnotfollowher.Thedetectivewentquicklytothepoliceman'shouse.Thenthetwomenhurriedtothejewellerystore.Theylookedthroughthewindow.Thepolicemanwassurprised.HespoketoMr.Keeling.“Idon'tunderstand.Youtoldme,‘Robbinstookayoungwomantoarestaurant.’Whereisshe？〞“Theresheis！〞saidMr.Keeling.Hepointedthroughthewindow.“DoyouknowtheladywithRobbins？〞askedthepoliceman.“That'shissecretfriend，〞saidMr.Keeling.“No!You'rewrong!That'sRobbins'wife，〞saidthepoliceman.“I'veknownherforfifteenyears.〞“What？〞thedetectiveshouted.Hisfacebecamepale.“Whoisunderthetableinthestore？〞Hestartedtokickthedoorofthejewellerystore.Mr.Robbinscametothedoorandopenedit.Thepolicemanandthedetectiveranintothestore.“Lookunderthattable！〞shoutedthedetective.“Bequick！〞Thepolicemanliftedtheclothandputhisarmunderthetable.Hepulledoutablackdress,ablackveilandawoman'swig(假发)．“Isthisyoungladyyourwife？〞Mr.Keelingaskedthejeweler.Hepointedatthewoman.“Yes!Sheismywife！〞saidMr.Robbinsangrily.“Whydidyoukickmydoor?Whyarethoseclothesundermytable？〞“Pleasecheckallthejewelleryinyourstore,Mr.Robbins，〞thepolicemansaid.“Isanythingmissing？〞Somediamondringsandsomeexpensivenecklacesweremissing.Themissingjewellerywasworth$800.Laterthatnight,Mr.Keelingwassittinginhisoffice.Hewaslookingthroughabigbookofphotographs.Theywerephotographsofcriminals.Thepolicemanhadbroughtthebooktothedetective'soffice.Suddenly,Mr.Keelingstoppedturningthepages.Helookedatapictureofahandsomeyoungmanwithafamiliarface.Thenextmorning,Mr.Keelingpaidthejeweler$800,andthenclosedhisoffice.67.Atthebeginning,theladywasabletogointothejewellerystorebecause________.A.shewenttothebackyardandfoundthewayB.shewastheownerofthestoreandhadthekeyC.twomenhelpedhertogethertoenterthestoreD.Mr.Keelingunlockedthebackdoortothestore68.TheyoungladywhostayedwithMr.Robbinsinthejewellerystorewasactually________．A.Mr.Robbins'sisterB.Mr.Robbins'secretfriendC.Mr.Robbins'wifeD.acleverthief69.ItcanbeinferredfromthepassagethatMr.Keelingcooperatedwithhisclient________.A.sothathecouldgetsomejewelleryfromthestoreB.becausethethoughthewashelpingtheladyC.becausehewantedtoplayajokeonMr.RobbinsD.sothathecouldgetajobasapoliceman70.Themissingjewelleryworth$800wasinfacttakenawayby________．A.ayoungwomanB.ayoungmanC.adetectiveD.apoliceman第四局部：任务型阅读(共10小题，每题1分，共10分)请认真阅读以下短文，并根据所读内容在文章后表格中的空格里填入一个最恰当的单词。注意：每个空格只填1个单词。Prepackaged,mass－producedsnackfoodsarehugelypopularingrocerystoresaroundtheworld.Manypeopleareaccustomedtochoosingsnackfoodsingrocerystores.Thefirstproblemwithpackagedsnackfoodslikecookies,crackers,andotherbite－sizedoptionsisthattheyareoftenloadedwithunhealthymaterials.Thereasonforthisisfairlyeasytounderstand.Mass－producedfoodsneedtobeuniformincolor,tasteandsoon.Inordertoachievethisuniformity,snackfoodproducersusesugar,salt,andotherchemicalpreservatives(防腐剂)andcoloringmaterialsinlargeamounts.Thesematerialscontributetoaratherunhealthyfood.Inadditiontorequiringuniformityoftasteandappearance,mass－producedsnackfoodslikepotatochipsandcandiesneedtobeshelfstable.Pr