2023屆福建省廈門高考壓軸卷英語試卷含解析

2023高考英語模擬試卷請考生注意：1．請用2B鉛筆將選擇題答案涂填在答題紙相應(yīng)位置上，請用0．5毫米及以上黑色字跡的鋼筆或簽字筆將主觀題的答案寫在答題紙相應(yīng)的答題區(qū)內(nèi)。寫在試題卷、草稿紙上均無效。2．答題前，認真閱讀答題紙上的《注意事項》，按規(guī)定答題。第一部分（共20小題，每小題1.5分，滿分30分）1．________workandcreativeactivitieshavebeenimportantdriversofhumanprogressisdeeplyrootedinoursocialvalues.A．HowB．WhetherC．ThatD．Why2．—Toapplyforashort-termstudyvisaintheUK,IhavetobeabletospeaksomeEnglish,butIwanttogotherejusttolearnEnglish.—Oh,it’sreally____.A．a(chǎn)confidentialsource B．a(chǎn)catch-22situationC．a(chǎn)Pandora’sbox D．a(chǎn)Herculeantask3．---Ican’tthinkwhyhe_____soangry.Imeantnooffence.---It’stypicalofhimtobesensitive.A．shouldhavebeen B．musthavebeenC．mighthavebeen D．canhavebeen4．—Howabouthisdesign?—Well,totellthetruth,itis______butsatisfactory.Soyou’llhavetotryyourbesttobetterit.A．something B．a(chǎn)nythingC．everything D．nothing5．—Whataconsequence!—Yes.I________himaboutit,butwithoutsuccess.A．willremindB．wouldremindC．wasremindingD．hadreminded6．Shehasexpressedherhope______theforeignstudentswillspreadthegoodwillandsincerityoftheChinesepeopletootherpartsoftheworld.A．that B．whichC．whether D．what7．Nicholaswasverykind,mercifulandgenerous.Thisis________FatherChristmasisbasedon.A．where B．how C．what D．why8．Peopletendtoloveagriculturalproducts________withouttheuseoffertilizers,pesticidesorchemicaladditives.A．growing B．grownC．beinggrown D．havingbeengrown9．Abrahamsethimselfupinfrontofhisdaughter,hands________herhair,andwasclosetotears,reluctanttotearhimselffromher.A．totoywith B．toyedwith C．toyingwith D．beingtoyedwith10．Oh！Icanfeelsomething_____upmyleg！Itmustbeaninsect．A．toclimb B．climbingC．climb D．climbed11．MaybesomeofyouarecuriousaboutwhatmylifewaslikeonthestreetsbecauseI’veneverreallytalkedaboutit______.A．inplace B．inturn C．inforce D．indepth12．ThenewlocallawinNanjingsaysparentsnotphysicallyharmyoungchildrenorexposethemtolong-termhungerasapunishment.A．can B．shallC．will D．need13．Youwillhavetostayathomeallday______youfinishallyourhomework.A．if B．unless C．whether D．because14．Theargumentremainsextremelyheateditisnecessarytofrequentlyupdateteachingmaterial.A．that B．which C．if D．whether15．Theproblem_______hewillhavehiscollegeeducationathomeorabroadremainsuntouched.A．howB．whetherC．thatD．when16．Attheendofthehistoricarea，Wilmingtondisplayedits________asaworkingportcity：largeware-housesandafewotherdatedofficebuildings．A．a(chǎn)chievement B．reputationC．character D．standard17．Davewasa________.Becauseofhismisconductinclass,thewholeclasshadtostayafterschool.A．wetblanketB．leadinglightC．blacksheepD．darkhorse18．I_________tohelpyoutodohomeworkbutIcouldn'tspareanytime.I________acompositionlastnightandI'llfinishittomorrow.A．wanted；wrote B．hadwanted；waswritingC．hadwanted；wrote D．wanted；havebeenwriting19．—Didyoucatchthefirstbusthismorning?—No.Ithadleftthestop_________Igotthere.A.inthetime B．a(chǎn)tthetimeC．bythetime D．duringthetime20．________themselvesinthecommunityservices,studentscangainexperienceforgrowth.A．Involved B．ToinvolveC．Havingbeeninvolved D．Involving第二部分閱讀理解（滿分40分）閱讀下列短文，從每題所給的A、B、C、D四個選項中，選出最佳選項。21．（6分）Sports&ActivityDaySunday,14May20172:00pm—6:00pmAmkActivePark（AngMoKioStreet15）LearnASport&PlayAsAFamily◆JoinusforourSpores&ActivityDayaswecelebratetheFinaleoftheSingaporeFamilyCelebrations2017!◆LearnasporttogetherasafamilyatourSportingCentrewithmanyactivities,includingAmoraMassDanceTraining!◆Getyourfamilytogetherthroughafun-filledPowerUpTraining!RegisterNow◆RegistrationisFREE!◆Bethefirst2000toregisterbylMaysothatyoucanreceiveAmorafreegiftworth$70.◆Registrationclosesby10MayandyoucanregisterbySMSto71819223oremailrequire@sfc.sgthefollowing:<AmoraMassDanceTraining>,<yourname>,<age>and<contactnumber>.Formoreinformation,call171661.TherewillalsobebusservicesforfreeatAMKPointon14MayforallSingaporeFamilyCelebrationsparticipants!1、Theeventismainlydesignedfor.A．familiestogetcloserB．friendtolearntodanceC．childrentolearnasportD．parentstoorganizeagame2、Theeventwill.A．betakenpartinonlyby2000peopleB．lastforfourhoursintheafternoonC．takeplaceindifferentplacesD．beopentoregistrationuntil14May,20173、Wecanlearnfromthetextthatalltheparticipantcan.A．getAmorafreegiftworth$70B．registerinthreedifferentwaysC．call71819223formoreinformationD．takeafreebusrideatAMKPointonMay144、Thetextisprobably.A．a(chǎn)storyB．a(chǎn)reportC．a(chǎn)posterD．a(chǎn)notice22．（8分）閱讀理解Onthefirstdayofschoolourprofessorintroducedhimselfandchallengedustogettoknowsomeonewedidn'tknow.Ilookedroundwhenagentlehandtouchedmyshoulder.Iturnedaroundtofindawrinkled,littleoldladywithasmile.Shesaid,“Hi,handsome.MynameisRose.I'meighty-sevenyearsold.CanIgiveyouahug？”Ilaughedandenthusiasticallyresponded,“Ofcourseyoumay！”Shegavemeagiantsqueeze.“Whyareyouincollegeatsuchayoung，innocentage？”Iasked.“IalwaysdreamedofhavingacollegeeducationandnowI'mgettingone！”shetoldme.AfterclasswewalkedtotheStudentUnionbuildingandsharedachocolatemilkshake.Webecameinstantfriends.Everydayofthenextthreemonthswewouldleaveclasstogetherandtalknon-stop.Iwasalwayslisteningtothis“timemachine”asshesharedherwisdomandexperiencewithme.Overthecourseoftheyear,Rosebecameacampusicon(偶像)andsheeasilymadefriendswherevershewent.AttheendofthesemesterweinvitedRosetospeakatourfootballdinner.I'llneverforgetwhatshetaughtus.“Wedonotstopplayingbecauseweareold;wegrowoldbecausewestopplaying.Thereisahugedifferencebetweengrowingolderandgrowingup.Anybodycangrowolder.Thatdoesn'ttakeanytalentorability.Theideaistogrowupbyalwaysfindingopportunitiesinchange.Havenoregrets.Theelderlyusuallydon'thaveregretsforwhatwedid,butratherforthingswedidnotdo.Theonlypeoplewhofeardeatharethosewithregrets.”Sheconcludedherspeechbycourageouslysinging“TheRose”．Shechallengedeachofustostudythelyrics(歌詞)andlivethemoutinourdailylife.Attheyear'sendshefinishedthecollegedegreeshehadbegunallthoseyears.OneweekaftergraduationRosediedpeacefullyinhersleep.1、Whathappenedtotheauthoronthefirstdayofschool?A．Hegottoknowanoldprofessor.B．Hemadetheacquaintanceofanoldlady.C．HejoinedtheStudentUnion.D．Hehadtoshareamilkshakewithothers.2、FromtheunderlinedsentenceinParagraph1,wecanfindouttheauthor's________.A．concernaboutageB．respectfortheoldC．curiosityabouttheladyD．complaintabouteducation3、Intheauthor'seyes，________.A．RosewasinnocentandgenerousB．RosewaswiseandskilledC．Rosewastalentedandhard-workingD．Rosewascourageousandherwordswereinspiring4、WhichsayingmightRosepossiblysupport________.A．Oneisnevertoooldtolearn.B．Afriendinneedisafriendindeed.C．Romewasn'tbuiltinaday.D．Itisnousecryingoverspiltmilk.23．（8分）Televisionhaschangedthelifestyleofpeopleineveryindustrializedcountryintheworld.IntheUnitedStates,wheresociologistshavestudiedtheeffects,someinterestingobservationshavebeenmade.Television,althoughnotessential,hasbecomeanimportantpartofmostpeople’slives.Italterspeople’swaysofseeingtheworld;inmanyways,itsupportsandsustains(維持)modernlife.Televisionhasbecomeababy-sitter,anintroducerofconversations,themajortransmitterofculture,andakeeperoftradition.YetwhenwhatcanbeseenonTVinonedayiscriticallyanalyzed,itbecomesevidentthattelevisionisnotateacherbutasustainer;thepoorqualityofprogrammingdoesnotelevate(提高)peopleintogreaterunderstanding,butrathermaintainsandencouragesthelifeasitexists.TheprimaryreasonforthelackofqualityinAmericantelevisionisrelatedtoboththehistoryofTVprogrammingdevelopmentandtheeconomicsofTV.TelevisioninAmericabeganwiththeradio.Radiocompaniesandtheirsponsorsfirstexperimentedwithtelevision.Therefore,thecloserelationshipwhichtheadvertisershadwithradioprogramsbecamethesystemforAmericanTV.Sponsorsnotonlypaidmoneyfortimewithinprograms,butmanyactuallyproducedtheprograms.Thus,inAmericansociety,televisionisprimarilyconcernedwithreflectingandattractingsocietyratherthanexperimentingwithnewideas.Advertiserswanttoattractthelargestviewingaudiencepossible.Todosorequiresthattheprogramsbeentertainingratherthaneducational,attractiveratherthanchallenging.[TelevisioninAmericatodayremains,toalargeextent,withthesameorganizationandstandardsasithadthirtyyearsago.Thehopeforfurtherdevelopmentandtrueachievementtowardimprovingsocietywillrequireachangeintheentiresystem.1、Accordingtotheauthor,Americantelevisionispoorinqualitybecause_________.A．itiscontrolledbyradiocompaniesB．theprogramshavetobedevelopedpartlyforeconomicreasonsC．a(chǎn)dvertisersareinterestedinexperimentingwithnewideasD．itisstillatanearlystageofdevelopment,comparedwiththeradio2、Intheauthor’sview,AmericanTVshould_________.A．beentertainingandattractiveB．reflectsocietyandattractsocietyC．maintainandencouragethelifeasitexistsD．changewiththedevelopmentofsociety3、Basedonthepassage,whichofthefollowingstatementsisTRUE?A．TVhasbecomeamustintheAmerican’slife.B．OnecanexpecttoimprovehisunderstandingsignificantlyfromwatchingTV.C．AmericanTVisimportanttomostpeopleasitaffectstheirlifeinmanyways.D．AmericanTVnowadayshassomedifferentstandardsfromthepast.4、Theauthor’sattitudetowardsAmericantelevisionis_________.A．negative B．positiveC．indifferent D．sympathetic24．（8分）You’llprobablynevergotoMarsorsingonthestagewiththeRollingStones.Butifvirtualreality(VR)everlivesuptoitspromise,youmightbeabletodoallthesethings—andmanymore—withoutevenleavingyourhome.Unlikerealreality,virtualrealitymeanssimulating(模仿)bitsofourworld.Apartfromgamesandentertainment,it’slongbeenusedfortrainingairlinepilotsandsurgeonsandforhelpingscientiststofigureoutcomplexproblemssuchasthestructureofproteinmolecules(分子).Thenhowdoesitwork?Closeyoureyesandthinkofvirtualrealityandyouprobablypicturesomethinglikethis:amanwearingawrap-aroundheadsetanddatagloveswiredintoapowerfulworkstationorsupercomputer.WhatdistinguishesVRfromanordinarycomputerexperienceisthenatureoftheinputandoutput.Whereanordinarycomputerusesthingslikeakeyboard,mouse,orspeechrecognitionforinput,VRusessensorsthatdetecthowyourbodyismoving.AndwhereaPCdisplaysoutputonascreen,VRusestwoscreens(oneforeacheye),surround-soundspeakers,andmaybesomeformsoftouchandbodyfeedbackaswell.VRhasbeenroutinelyusedbyscientists,doctors,dentists,engineers,architects,archaeologists,andthemilitaryforaboutthelast30years.Difficultanddangerousjobsarehardtotrainfor.Howcanyousafelypracticetakingatriptospace,makingaparachutejump,orcarryingoutbrainsurgery?Allthesethingsareobviouscandidatesforvirtualrealityapplications.Likeanytechnology,virtualrealityhasbothgoodandbadpoints.Criticsalwaysraisetheriskthatpeoplemaybeaddictedtoalternativerealitiestothepointofignoringtheirreal-worldlives—butthatcriticismhasbeenleveledateverythingfromradioandTVtocomputergamesandtheInternet.Likemanytechnologies,VRtakeslittleornothingawayfromtherealworld:youdon’thavetouseitifyoudon’twantto.1、Whatequipmentdoweprobablyneedforvirtualreality?A．Akeyboard,aheadsetandasupercomputer.B．Aheadset,dataglovesandaspeechrecognition.C．Aheadset,dataglovesandasupercomputer.D．Akeyboard,amouseandaspeechrecognition.2、Paragraph3ismainlyabout.A．theprinciplesofvirtualrealityB．theapplicationsofvirtualrealityC．thehistoryofvirtualrealityD．theinfluencesofvirtualreality3、Accordingtothepassage,virtualrealitymeans.A．imaginingbeautifulthingsinourmindB．creatingsomethingthatdoesn’texistC．experiencingthingsthatdon’treallyexistD．cloningsomethingthathasdiedout4、Whatisthewriter’sattitudetowardsVR?A．Appreciative.B．Cautious.C．Skeptical.D．Indifferent.25．（10分）RoadtripMotorhomedeliveryoffersgreatfamilyholidays．Forjust$1aday，youcanhireafully-equippedmotorhome，whichyoudelivertoaspecificdestinationwithinsomedaysandkilometers．Youthenhireanotheronetogethomeortakeabusortrain．Youronlyotherexpensewillbefuelandabout$20adayforparkingfees．Tolearnmore，visitapollocamper．com．PlanaheadForacomfortablebreak，flexibilitywithtimes，datesandplaceshelpslowerthecost．Findafewhotelsyoulike，askabouttheirvacantrooms，thenwaitafewweeksandcallagain．Iftheystillhaverooms，you'reatanadvantagetoaskforabetterprice．Lotsoflast-minutedealsareonline．Watif（watif．com．a(chǎn)u）hasdealsonhotelsthathavedroppedtheirpricessoslow．Youdon'tknowwhereyou'restayinguntilit'sbooked，butanywherewithfourorfivestarshastobefairlygood．BacktonatureWildcampingappealstonatureloversandcostsnothing．Thisisforbiddenonbeachesandparksinmosturbanareas，butyoucanturnupinmoredistantareaaslongasnobodyownstheland．You'llneedtotakeeverythingwithyouandmayneedtoshoponeBuy（ebuy．com．a(chǎn)u）．Ifyou'reacampingbeginner，beawareofsafetymeasuresandgetyourquestionsansweredontheInternet．SwapmeetHowaboutahomeswap？Fora$250yearlyjoiningcost，youcanstayinsomeone’shomeinaninternationalplaceofyourchoicewhiletheyorsomeoneelsestaysinyours．Findoutmoreatfamilylink．com．a(chǎn)u．1、Wherecanyougettheinformationaboutmotorhomes？A．a(chǎn)pollocamper．com．B．watif．com．a(chǎn)u．C．ebuy．com．a(chǎn)u．D．familylink．com．a(chǎn)u．2、Whathelpstopaylessforroomsinahotel？A．Choosinghotelswithfourorfivestars．B．BargainingpricesthroughtheInternet．C．Waitingforsometimebeforebooking．D．Decidingonroomsasearlyaspossible．3、What'stheadviceforcampingbeginners？A．KeepintouchwitheBuy．B．Watchoutforpossibledangers．C．Stayawayfromno﹣man'sland．D．Takeonlywhatyouneed．4、What'sthepurposeofthetext？A．Toteachtheimportanceofrunningawayfromwork．B．Tointroducenewdestinationsfornaturelovers．C．Toshowtheadvantagesofonlineservice．D．Tohelppeoplehavefunatlessexpense．第三部分語言知識運用（共兩節(jié)）第一節(jié)（每小題1.5分，滿分30分）閱讀下面短文，從短文后各題所給的A、B、C和D四個選項中，選出可以填入空白處的最佳選項．26．（30分）YanWei,a30-year-oldblindman,hasjustcoveredamarathononSunday.Thistimehe1hispersonalrecordwithanewtimeof3hours,15minutesand58seconds.Hehadtwo2tohelphimandwas3themwithasafetyrope.”Yan,wholosthis4whenhewasafewmonthsold,startedrunningthreeyearsago,afterlearningthatvolunteerswereavailableto5blindrunnersatthe2015BeijingMarathon.Whenhestartedtrainingwiththehelpofhis6andparents,hecouldrunonlyfor2or3kmatatime.Butsoonhe7somuchthathissisterhadtorideabiketostay8himandguidehim.Ittookhimjustfourmonthstobe9forhisfirstmarathon.Yan10hisquickprogresstodailyexercise.“I’dliketo11200kmpermonth.Ifeel12ifIdonotrunfortwodaysinarow.”saysYan.Buttrainingisbecoming13forYannow,becausetherearefewguideswhocanrunfasterthanhim.Hisguidesneedtobeinbetter14conditionthanhim.“He’snevermissedasingletraininginthepastthreeyears.Iam15notonlybyhisstrengthbutalsohis16totrain,”saysShuHao,an17runnerwhohastakenpartinalotofmarathonsandoneofYan’srunningguides.Insteadofdyingtoprovehimself18heran,Yanhastakendelightinrunningandnowmovedto19theprocess.Hehascompletedfourteen20inthelasttwoyearsandjustwantstokeepgoing.1、A．beatB．copiedC．researchedD．preserved2、A．dogsB．coachesC．guidesD．judges3、A．liftedbyB．tiedtoC．separatedfromD．fixedon4、A．parentsB．strengthC．voiceD．sight5、A．a(chǎn)ssistB．comfortC．representD．consult6、A．teachersB．classmatesC．brotherD．sister7、A．donatedB．occupiedC．improvedD．witnessed8、A．a(chǎn)wayfromB．a(chǎn)headofC．behindD．for9、A．readyB．lateC．gratefulD．harmful10、A．a(chǎn)djustsB．owesC．devotesD．a(chǎn)pplies11、A．runB．driveC．swimD．fly12、A．unluckyB．embarrassedC．uncomfortableD．ignored13、A．stricterB．looserC．easierD．harder14、A．livingB．physicalC．mentalD．educational15、A．praisedB．evaluatedC．impressedD．inspected16、A．instructionB．pressureC．a(chǎn)bsenceD．determination17、A．experiencedB．honestC．overweightD．upset18、A．soonafterB．everytimeC．a(chǎn)sifD．eventhough19、A．delayB．registerC．simplifyD．enjoy20、A．projectsB．operationsC．marathonsD．tasks第二節(jié)（每小題1.5分，滿分15分）閱讀下面材料，在空白處填入1個適當?shù)膯卧~或括號內(nèi)單詞的正確形式。27．（15分）WuzhenisatypicalancienttowninsouthernChina.1．(lie)inthenorthernpartofTongxiangCity,ZhejiangProvince,itcanbeeasilyaccessed(到達)throughanumberofexpressways.OnarecentbusinesstriptoShanghai,alocalfriend2．(invite)metoWuzhen.Itwas9:00amwhenwearrivedthere.Withitshousesmade3．blackbricksandgraytiles(瓦)againstthewhitewalls,thesmalltownislikea4．(tradition)Chineseinkandwashpainting.Wanderingalongtheriverside,youwillbe5．(deep)impressedbythegreatviewandslowlifestyle.Atlunchtime,I6．(treat)tothesteamedwhitefish,awell-knowndishservedatmost7．(restaurant)inWuzhen.Ittastedsogood.ButIthinkitisthemixofcultureandfoodthatmakesitsooutstanding.Afterlunch,wecontinuedourwalk,enjoyingthesightsandlearningaboutitshistory,ahistory8．isfullofgoodstoriesanduniquecharacters.It'sreallyfortunateforanybody9．(explore)suchabeautifulplace.Wehopetherewillbe10．secondchancetovisitthiswonderfultown!第四部分寫作（共兩節(jié)）第一節(jié)短文改錯（滿分10分）28．（10分）假定英語課上老師要求同桌之間交換修改作文，請你修改你同桌寫的以下作文。文中共有10處語言錯誤，每句中最多有兩處。每處錯誤僅涉及一個單詞的增加、刪除或修改。增加:在缺詞處加一個漏字符號()，并在其下面寫出該加的詞。刪除:把多余的詞用斜線(＼)劃掉。修改:在錯的詞下劃一橫線，并在該詞下面寫出修改后的詞。注意：1、每處錯誤及修改均僅限一詞。2、只允許修改10處，多者(從第11處起)不計分。Applyingforaforeignuniversityisahugeproject、Hereismyexperience、IdidvoluntaryworkinGradeOne、IlistedallofmyachievementandthevoluntaryworkIhavedone、Aftercompletetheonlineadmissionprocess,Itookadeepbreatheanddreamedaboutmydreamcollege、However,exceptofferfromtheUniversityofCalifornia,SanDiego(UCSD),Itotalgoteightrejections、Oneday,IlockedmyselfinmyroombutthoughtaboutwhatIhaddone、FinallyIunderstoodthatIcouldlearnnothingfromtheexperienceeventhoughthoserejectionsweremademesad、IacceptedtheUCSD'sofferandadjustedmyselfquickly、Forthisattitude,everythingIsawofUCSDthrilledme、第二節(jié)書面表達（滿分25分）29．（25分）Directions:WriteanEnglishcompositioninabout100wordsaccordingtotheinstructionsgivenbelowinChinese.假設(shè)你是李明，你的表弟張華即將踏入高中學(xué)習(xí)，請你寫一封信給他，在信中簡要描述你自己的高中學(xué)習(xí)生活，并給他的高中學(xué)習(xí)生活提些建議。_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

參考答案第一部分（共20小題，每小題1.5分，滿分30分）1、C2、B3、A4、B5、D6、A7、C8、B9、C10、B11、D12、B13、B14、D15、B16、C17、C18、B19、C20、D第二部分閱讀理解（滿分40分）閱讀下列短文，從每題所給的A、B、C、D四個選項中，選出最佳選項。21、1、A2、B3、D4、C22、Everyday,peoplecomeintocontactwiththousandsofchemicals.Thesechemicalsaresaidtobeharmlesstohumanhealth.Infact，thechemicalsareconsideredsosafethatwewashwiththem.Weputthemonourbodiesandevenourfaces.Otherchemicalproductsareusedthroughoutourhomes.Bythetimeyouwalkoutofyourfrontdoor,youhavealreadybeenexposedtothousandsofchemicals.Onitsown,eachchemicalseemsharmless.Butincombinationwithotherchemicals,theymaybecomedeadly.Thatisthefindingofatwo-yearstudybyahigh-profiletaskforceofscientists.Thetaskforcewastoldtoinvestigatethecancer-causingpossibilityofchemicalmixtures.LindaGulliverwasoneof174scientistsonthetaskforce.Theirjobwastostudythecancer-causingpotentialof85chemicals.All85aresaidtobecommonintheenvironment.Ms.Gulliverexplainsthatchemicalshavethepotentialorytoformdangerousmixtures.Evensimplemineralscanbecomedangerouswhenmixedwithchemicalsfoundinplasticsorbeautyproducts.Workingingroups,thescientistsexploredhowdifferentchemicalmixturescouldleadtocancer.Ms.Gulliver’steamlookedattheabilityofdifferentcombinationstosupportthein-creaseofmalignant(惡性的)humancells.Shesaysthecurrentwaytoidentifywhetherchemicalscausecanceristotestthemoneatatime.Thismethodleads,sheadds,toalonglistofsupposedly“safe”chemicals.Sheandherteamsaythatapproachneedstochange.“Wedefinitelyneedcertainresearch…tofindoutwhatmixturesofchemicalswouldbemoreharmfulthanothers;whatgroupsofchemicals,whentogether,wouldproducemore