全新版大学英语第二册Unit8

,BR_main,AnEnglishSongEarthSong,AbouttheAuthorRachelCarson,AbouttheBookSilentSpring,BackgroundInformation,Brainstorming,BR_2_main1,AbouttheAuthorRachelCarson,BR_2_main2,AbouttheAuthorRachelCarson,AbriefintroductiontoRachelCarson,LearnandthinkHerQuotes,BR_4_main,BackgroundInformation,EnvironmentalProtectionOrganizations,EarthDay,BR_1.1,EarthSongMichaelJackson,AnEnglishSongEarthSong,WhataboutsunriseWhataboutrainWhataboutalltheThatyousaidweweretogain.WhataboutkillingIsthereatimeWhataboutallthethingsThatyousaidwasyoursandmine.,things,_,fields,_,Directions:Listentothesongandfillintheblankswithwhatyouhear.,BR_1.2,DidyoueverstoptonoticeAlltheweveshedbeforeDidyoueverstoptonoticeTheearththeweepingshores?WhathavewedonetotheworldLookwhatwevedoneWhataboutalltheThatyoupledgeyouronlyson.Whataboutfields,blood,_,crying,_,peace,_,flowering,_,BR_1.3,IsthereatimeWhataboutalltheThatyousaidwasyoursandmine.DidyoueverstoptonoticeAllthechildrenfromwarDidyoueverstoptonoticeThecryingearththeweepingshores,dreams,_,dead,_,BR_2_1.1,AbriefintroductiontoRachelCarson,BR_2_1.1_pop,Born:May27,1907Birthplace:Springdale,PennsylvaniaOccupation:marinebiologist,writerNationality:AmericanWritingPeriod:19371964Genres:naturewritingSubjects:marinebiology,ecology,pesticidesNotablework(s):SilentSpringDied:April14,1964(aged56)SilverSpring,Maryland,BR_2_1.2,RachelLouiseCarson(19071964)wasanAmericanmarinebiologistandnaturewriterwhosewritingsarecreditedwithadvancingtheglobalenvironmentalmovement.Inthelate1950s,Carsonturnedherattentiontoconservationandtheenvironmentalproblemscausedbysyntheticpesticides.TheresultwasSilentSpring(1962),whichbroughtenvironmentalconcernstoanunprecedentedportionoftheAmericanpublic.SilentSpringspurredareversalinnationalpesticidepolicy,BR_2_1.3,leadingtoanationwidebanonDDTandotherpesticidesandthegrassrootsenvironmentalmovementthebookinspiredledtothecreationoftheEnvironmentalProtectionAgency.CarsonwasposthumouslyawardedthePresidentialMedalofFreedombyJimmyCarter.,BR_pesticides,pesticides,BR_DDT,DDT,BR_environmentalmovement,environmentalmovement,BR_EnvironmentalProtectionAgency,EnvironmentalProtectionAgency,BR_PresidentialMedalofFreedom,PresidentialMedalofFreedom,BR_2_2.1,LearnandthinkHerQuotes,“ThosewhodwellamongthebeautiesandmysteriesoftheEarthareneveraloneorwearyoflife.”,“Nowitchcraft,noenemyactionhadsilencedtherebirthofnewlifeinthisstrickenworld.Thepeoplehaddoneitthemselves.”,BR_2_2.2,LearnandthinkHerQuotes,“Westandnowwheretworoadsdiverge.ButunliketheroadsinRobertFrostsfamiliarpoem,theyarenotequallyfair.Theroadwehavelongbeentravelingisdeceptivelyeasy,asmoothsuperhighwayonwhichweprogresswithgreatspeed,butatitsendliesdisaster.Theotherforkoftheroadtheonelesstraveledbyoffersourlast,ouronlychancetoreachadestinationthatassuresthepreservationoftheearth.”,BR_3,AbouttheBookSilentSpring,BR_3_pop1,SilentSpringisabookwrittenbyRachelCarsonandpublishedbyHoughtonMifflininSeptember1962.Thebookiswidely1)withhelpinglaunchtheenvironmentalmovement.WhenSilentSpringwaspublished,RachelCarsonwasalreadyawell-knownwriteron2),buthadnotpreviouslybeenasocialcritic.Thebookwaswidelyread,and3)widespreadpublicconcernswith4)andpollutionoftheenvironment.SilentSpringfacilitatedthe5)ofthepesticideDDTin1972intheUnitedStates.,credited,_,naturalhistory,_,inspired,_,pesticides,_,ban,_,BR_3_pop2,Thebookdocumenteddetrimentaleffectsofpesticidesontheenvironment,6)onbirds.CarsonsaidthatDDThadbeenfoundtocausethinnereggshellsandresultin7)problemsanddeath.Shealsoaccusedthechemicalindustryofspreadingdisinformation,andpublic8)ofacceptingindustryclaimsuncritically.,particularly,_,productive,_,officials,_,BR_4_1.1,EnvironmentalProtectionOrganizations,TheUnitedNationsEnvironmentProgramme(UNEP)2.GreenPeace3.TheEnvironmentalProtectionAgency,BR_1.1_pop1,1.TheUnitedNationsEnvironmentProgramme(UNEP),coordinatesUnitedNationsenvironmentalactivities,assistingdevelopingcountriesinimplementingenvironmentallysoundpoliciesandpractices.ItwasfoundedasaresultoftheUnitedNationsConferenceontheHumanEnvironmentinJune1972andhasitsheadquartersinNairobi,Kenya.UNEPalsohassixregionalofficesandvariouscountryoffices.,BR_1.1_pop2,2.GreenPeace:alargeinternationalpressuregroupthataimstoprotecttheenvironment.Itsmembersarewellknownforprotectingtheenvironment.Theyoftengooutinsmallboatstostoppeoplefromkillingwhalesorthrowingpoisonousmaterialintothesea.,BR_1.1_pop3,3.TheEnvironmentalProtectionAgency:aUSgovernmentorganizationthatestablishedrulesandstandardsforprotectingtheenvironment,e.g.againstpollution.,BR_4_1.2,EarthDay,EarthDayisadaydesignedtoinspireawarenessandappreciationfortheEarthsenvironment.Itison22April.ItwasfoundedbyU.S.SenatorGaylordNelson(D-Wisconsin)asanenvironmentalteach-inin1970andiscelebratedinmanycountrieseveryyear.ThefirstEarthDaywasin1970.EarthDayissimilartoWorldEnvironmentDay.,BR_5,Brainstorming,Directions:Workingroupsandwritedownthewordsorphrasesrelatedto“environmentalprotection”,thengroupthembysimilarity.,GR_main,PartDivisionoftheText,FurtherUnderstanding,GR_FurtherUnderstanding_main,ForPart1Makesentences,ForPart2QuestionsandAnswers,ForPart3thecattleandsheepsickenedanddied.,DR_Text5,Everywherewasashadowofdeath.Thefarmersspokeofmuchillnessamongtheirfamilies.Inthetownthedoctorshadbecomemoreandmorepuzzledbynewkindsofsicknessappearingamongtheirpatients.Therehadbeenseveralsuddenandunexplaineddeathsnotonlyamongadultsbutevenamongchildren,whowouldbestrickensuddenlywhileatplayanddiewithinafewhours.Therewasastrangestillness.Thebirds,forexamplewherehadtheygone?Manypeoplespokeofthem,puzzledanddisturbed.Thefeedingstationsinthe,DR_Text6,backyardsweredeserted.Thefewbirdsseenanywhereweremoribund;theytrembledviolentlyandcouldnotfly.Itwasaspringwithoutvoices.Onthemorningsthathadoncethrobbedwiththedawnchorusofrobins,catbirds,doves,jays,wrens,andscoresof,otherbirdvoicestherewasnownosound;onlysilencelayoverthefieldsandwoodsandmarsh.,DR_Text7,Onthefarmsthehensbrooded,butnochickswerehatched.Thefarmerscomplainedthattheywereunabletoraiseanypigsthelittersweresmallandtheyoungsurvivedonlyafewdays.Theappletreeswerecomingintobloombutnobeesdronedamongtheblossoms,sotherewasnopollinationandtherewouldbenofruit.Theroadsides,oncesoattractive,werenowlinedwithbrownedandwitheredvegetationasthoughsweptbyfire.Thesetoo,weresilent,desertedbyalllivingthings.Eventhestreamswerenowlifeless.Anglersnolongervisitedthem,forallthefishhaddied.,DR_Text8,Intheguttersundertheeavesandbetweentheshinglesoftheroofs,whitegranularpowderstillshowedafewpatches;someweeksbeforeithadfallenlikesnowupontheroofsandthelawns,thefieldsandstreams.,Nowitchcraft,noenemyactionhadsilencedtherebirthofnewlifeinthisstrickenworld.Thepeoplehaddoneitthemselves.,DR_Text9,Thistowndoesnotactuallyexist,butitmighteasilyhaveathousandcounterpartsinAmericaorelsewhereintheworld.IknowofnocommunitythathasexperiencedallthemisfortunesIdescribe.Yeteveryoneofthesedisastershasactuallyhappenedsomewhere,andmany,realcommunitieshavealreadysufferedasubstantialnumberofthem.Agrimspectrehascreptuponusalmostunnoticed,andthisimaginedtragedymayeasilybecomeastarkrealityweallshallknow.,DR_Text10,WhathasalreadysilencedthevoicesofspringincountlesstownsinAmerica?Thisbookisanattempttoexplain.,DR_S_Inautumn,Paraphrasethesentence.,Inautumn,theleavesofoaks,maplesandbirchesturnedbrightredagainstabackgroundofgreenpines.,Inautumn,oakandmapleandbirchsetupablazeofcolourthatflamedandflickeredacrossabackdropofpines.,TranslatethissentenceintoChinese.,秋季到来时，橡树、枫树和白桦树五彩缤纷，在大片松林的衬托下如同一片火海，熠熠生辉。,DR_S_Thecountryside,Thecountrysidewas,infact,famousfortheabundanceandvarietyofitsbirdlife,andwhenthefloodofmigrantswaspouringthroughinspringandautumnpeopletravelledfromgreatdistancestoobservethem.,Understandthelongsentence.,Thisisacompoundsentenceconnectedwiththetransitionalword“and”.Inthesecondmainclause,asub-clauseoftime“whenthefloodof”isused.,TranslatethissentenceintoChinese.,事实上，这里的乡村鸟类品种丰富，数量可观，因此远近闻名。每当大批候鸟在春秋之际蜂拥而至，许多人远道赶来观看。,DR_S_Soithadbeen,Whatdoestheauthormeanbysaying“ithadbeenfromthedaysmanyyearsagowhen”?,Shemeansthatthelandhadbeenknownforabundanceandbio-diversityforalongtime.,Soithadbeenfromthedaysmanyyearsagowhenthefirstsettlersraisedtheirhouses,sanktheirwellsandbuilttheirbarns.,后来，一种奇怪的疫病在这个地区悄悄蔓延开来，一切不再依旧。这个社区中了一种什么邪，一群群鸡很快都染上了神秘的疾病，牛羊纷纷病死。,DR_S_Thenastrange,Thenastrangeblightcreptovertheareaandeverythingbegantochange.Someevilspellhadsettledonthecommunity:mysteriousmaladiesswepttheflocksofchickens;thecattleandsheepsickenedanddied.,Whatdoestheauthormeanbya“strangeblight”and“evilspell”?,Shereferstotheshadowofdeath.Chickens,cattleandsheepbegantodieofmysteriousmaladies.Peoplewerestrickenwithstrangesicknessesandsomeofthemdied.,TranslatethissentenceintoChinese.,DR_S_Theroadsides,Whatsthefunctionof“asthough”?,Heretheauthorusedafigureofspeech,similetomakeherexpressionmorevividandclear.,Whatsherpurposebysayingso?,Shefocusesonthesevereconsequencecausedbythepollution.,Theroadsides,oncesoattractive,werenowlinedwithbrownedandwitheredvegetationasthoughsweptbyfire.,DR_S_Thistowndoes,Thistowndoesnotactuallyexist,butitmighteasilyhaveathousandcounterpartsinAmericaorelsewhereintheworld.,这座小镇在现实世界中并不存在，但是在美国和世界的其他地方，很可能会轻而易举地有数千个遭遇到与其类似命运的小镇出现。,Whydoestheauthorwanttosaybyusing“itmight?,“might”isusedheretoexpressapossibilitythatitmayhappenormaybetruesuchthingsdidhavehappenedinAmericaorelsewhereintheworld.,TranslatethissentenceintoChinese.,DR_S_Whathasalready,WhathasalreadysilencedthevoicesofspringincountlesstownsinAmerica?,是什么东西使无数美国小镇的春天鸦雀无声？,Whatshouldspringbelike?Whatdoes“silencedthevoicesofspring”mean?,Springshouldbethrobbingwithlife,fullofbirdsong.“Silencedthevoicesofspring”meansthespringhasalreadybeenmadelifeless.,TranslatethissentenceintoChinese.,DR_word_inharmonywith1,inharmonywith:agreewithanotheridea,feelingetc.,orlookgoodwithotherthings,Yoursuggestionsarenotinharmonywiththeaimsofthisproject.,我们的行为应该与话语相一致。,Ouractionsshouldbeinharmonywithourwords.,DR_word_inharmonywith2,Collocation:,与协调一致,beinharmonywith,与不协调一致,beoutofharmonywith,和睦相处,liveinharmony,DR_word_surroundings,surroundings:n.everythingthatisaroundornearsb./sth.,ThehouseissetinbeautifulsurroundingsnearLakeConiston.,Weworkmorehappilyinpleasantsurroundings.,DR_word_inthemidstof,inthemidstof:amongorwith;while(sth.)ishappening,Thegovernmentisinthemidstofamajorcrisis.,他在暴雨中离开了公寓。,Helefthisflatinthemidstofarainstorm.,DR_word_prosperous,prosperous:adj.richandsuccessful,ImsureyoucanbuildaprosperousbusinessinChina.,Aftertheirmisfortunesthefamilyslowlybecameprosperous.,DR_word_bloom1,bloom:1.n.aflower,especiallyonecultivatedforitsbeauty,FallleavesmaketheJapanesemad,justlikethecherrybloominthespring.,苹果树正在开花。,Theappletreeswereinbloom.,2.duceflowers;beinflower.,Someofmylastrosesofsummerareevenmorebeautifulthanthefirstonesthatbloomedinearlyspring.,Everythinginthegardenwasbloominglovely!,DR_word_bloom2,Collocation:,开花,comeintobloom/blossom,花已落,beoutofbloom/blossom,花盛开着,in(full)bloom/blossom,明日黄花，已失去新颖感或应时价值的事物,thebloomisofftherose,bloom,blossom以及flower均可作名词和动词，意为“花，开花”。其不同点是：bloom尤指“大的、供观赏的花，诸如牡丹、玫瑰、梅花、菊花等;blossom指树木开花，尤指果树上开的花。flower指开放的花朵或泛指花卉。,NB:,DR_word_flame,flame:vi.becomesuddenlybrightwithlightorcolour,especiallyredororange,Agreatfireflamedinanopenfireplace.,Hisfaceflamedwithembarrassment.,DR_word_bark1,bark:1.vi.maketheshortloudsoundthatadogmakes,Haveyoueverseenadogbarkingatthemoon?,这只狗对陌生人吠叫。,Thedogbarksatstrangers.,2.vt.saysomethingquicklyinaloudvoice,Thecaptainbarkedintothemicrophone,“Attentioneveryone!”,他开始厉声下达命令。,Hebeganbarkingouthisorders.,DR_word_mist1,mist:n.alightcloudlowoverthegroundthatmakesitdifficultforyoutoseeveryfar,Wecouldjustseetheoutlineofthehousethroughthemist.,Themistalongtheriverbankshadgonebymidmorning.,mist指轻雾，气象学上称作霭。例如：fog指较浓的雾。例如：,DR_word_mist2,mist,fog衣食足然后知礼义。吃得过饱;(对)极其厌倦吃过日子;用喂养鸟兽等吃得好依靠提供的东西维持(生活);从中取食,DR_word_abundance,abundance:n.averylargequantityofsth.,Thetropicalislandboastsanabundanceofwildlife.,Shewasblessedwithtalentandcharminabundance.,Collocation:,丰富,许多,abundanceof,充足，丰富,inabundance,丰年,ayearofabundance,DR_word_migrant1,migrant:n.abirdoranimalthattravelsregularlyfromonepartoftheworldtoanother,Themigrantsspantheanimalkingdom,fromwhalestodragonflies.,夏天候鸟来这里筑巢。,Summermigrantsnesthere.,DR_word_migrant2,2)someonewhogoestoliveinanotherareaorcountry,especiallyinordertofindwork,Historically,Californiahaswelcomedmigrantsfromotherstatesandnations.,流动工人从一国转到另一国。寻找工资高的工作。,Migrantworkersmovefromcountrytocountryinsearchofwell-paidwork.,与migrant形似的词有emigrant“移居国外的人”，immigrant“(自国外移入的)移民”。,NB:,DR_word_creep1,creep:vi.movequietlyandslowly,Ivycreptupthewallsofthebuilding.,Shecreptupbehindhimandputherhandsoverhiseyes.,creep,climb,crawl这三个动词都有“爬”之意。,CF:,creep多指人或四足动物匍匐爬行，尤指偷偷地或不出声地缓慢向前爬行。也指植物的蔓延生长等。climb通常指用手或足爬上或爬下，也指飞机、日、月的上升，还可用作比喻。crawl指人或动物以身躯贴着地面缓慢地移动。,DR_word_creep2,Directions:Fillintheblankswiththewordsabove.Changetheformwherenecessary.,.5.6.7.,Thebabyacrossthefloor.Noonenoticedthatthelittleboyhadintotheroomandwassittingthere,listening.Boysweretreesalongtheriverbank.Ittookseveralhourstodrivethe50miles,alongthroughthesnow.SheintoChrissysroom,shuttingthedoorsilentlybehindher.Severalfansontotheroofofthearenatogetabetterview.Saleshave11%thisquarter.,crawled,_,crept,_,climbing,_,crawling,_,crept,_,climbed,_,climbed,_,DR_word_spell1,spell:n.1)(stateorconditioncausedby)magicpower,Afterashortspellinhospitalshewassoonbackatwork.,她担心你正从她魔力般的影响下清醒过来。,Sheisafraidthatyouarewakingfromherspell.,2)ashortperiodoftimeduringwhichsth.lasts,Heshadaspellofbadluckrecently.,她趁上班时一段清静的时间写了封信。,Shemanagedtowritealetterduringaquietspellatwork.,DR_word_spell2,Collocation：,在一段时间内,duringaspell,作为的时期,aspellas,失业期,aspellofunemployment,在咒语的支配下；中了咒语,be/come/fallunder,被某人迷住,undersb.sspell,DR_word_settleon1,settleon:fallfromaboveandcometoreston,Asathickfogsettledonthegrounditbecametoodarktoplayoutside.,Whenyouareready,flydowntoEarth;settleonthemoistgreenbanksofarunningstream.,DR_word_settleon2,Pattern:,对感到满足,settlefor,决定,settleon,同清理账目,settlewith,定下心来,settledownto/into,DR_word_mysterious,mysterious:adj.hardtoexplainorunderstand,Thepoliceareinvestigatingthemysteriousdeathsofchildrenatthehospital.,一个神秘的捐助人提供了这笔钱。,Amysteriousbenefactorprovidedthemoney.,DR_word_malady,malady:n.anillness;aseriousproblem,Between1937and1941hediscovereddrugswhichmitigated(缓和)theworstsymptomsofthesemaladies.,暴力犯罪是为害现代社会的弊病之一。,Violentcrimeisoneofthemaladiesaffectingmodernsociety.,DR_word_flock1,flock:n.agroupofbirds,sheeporgoats,Naturallytheshepherdswhohadbroughttheirflocksacrossmustknowthesafestroute.,一群鸟飞过来,打猎开始了。,Aflockofbirdscomesover,andthehuntingstarts.,她赶着牛群穿过荒野。,DR_word_flock2,这三个名词都有“群”之意。,flock,herd被侵害的;受之苦的”；（作定语或构成复合词）意为“受灾的,遇难的;患病的;受罪的;愁苦的;衰老的;受了创伤的”。例如：,NB:,bestrickenwithpoverty,受贫困的折磨,astrickenarea,灾区,poverty-stricken,贫穷不堪的,DR_word_desert1,desert:vt.abandon,HisfatherhaddesertedthefamilywhenGrahamwasthreeyearsold.,他遗弃妻女，返回了英格兰。,HedesertedhiswifeanddaughterandwentbacktoEngland.,DR_word_desert2,desert,abandonthecattleandsheepsickenedanddied.,这个社区中了一种什么邪，一群群鸡很快都染上了神秘的疾病，牛羊纷纷病死。,SentenceTranslation,AR_SentenceTranslation2,2.Thecountrysidewas,infact,famousfortheabundanceandvarietyofitsbirdlife,andwhenthefloodofmigrantswaspouringthroughinspringandautumnpeopletravelledfromgreatdistancestoobservethem.,事实上，这里的乡村鸟类品种丰富，数量可观，因此远近闻名。每当大批候鸟在春秋之际蜂拥而至，许多人远道赶来观看。,AR_SentenceTranslation3,3.Onthemorningsthathadoncethrobbedwiththedawnchorusofrobins,catbirds,doves,jays,wrens,andscoresofotherbirdvoicestherewasnownosound.,过去的黎明生机勃勃，知更鸟、北美猫鸟、鸽子、松鸦、鹪鹩和许许多多其他鸟类一起组成黎明大合唱，而现在却是鸦雀无声。,AR_SentenceTranslation4,4.曾经是引人驻足的路边，现在却只有褐色的枯草朽木，好像被大火烧了似的。,Theroadsides,oncesoattractive,werenowlinedwithbrownedandwitheredvegetationasthoughsweptbyfire.,5.在这个遭遇灾难的世界里，扼杀新生命的不是巫术，也不是敌人的进攻。而是人们自己的所作所为。,Nowitchcraft,noenemyactionhadsilencedtherebirthofnewlifeinthisstrickenworld.Thepeoplehaddoneitthemselves.,AR_SentenceTranslation5,6.在很大程度上，地球上动植物的外表形态和习惯是环境塑造的。,Toalargeextent,thephysicalformandthehabitsoftheearthsvegetationanditsanimallifehavebeenmoldedbytheenvironment.,7.如今变化的快捷，以及产生新情况的速度，跟随的是人类鲁莽的步伐而不是大自然的从容节奏。,Therapidityofchangeandthespeedwithwhichnewsituationsarecreatedfollowtherashandheedlesspaceofmanratherthanthedeliberatepaceofnature.,AR_TalkaboutthePictures1,TalkaboutthePictures,AR_TalkaboutthePictures_pop1,AR_TalkaboutthePictures_pop2,AR_TalkaboutthePictures_pop3,AR_TalkaboutthePictures_pop4,AR_ProverbsandQuotations1,ProverbsandQuotations,1.Feedapigandyoullhaveahog.,种瓜得瓜，种豆得豆。,2.Illairslayssoonerthanthesword.,污浊的空气杀人比刀还要快。,AR_ProverbsandQuotations2,3.Thenationthatdestroysitssoildestroysitself.FranklinD.Roosevelt,Americanpresident,一个破坏它自己土地的国家，就等于毁灭它本身。美国总统富兰克林罗斯福,4.Natureneverdidbetraytheheartthatlovedher.WilliamWordsworth,Britishpoet,大自然永远不会背叛爱她的那颗心。英国诗人威廉华兹华斯,AR_ProverbsandQuotations3,5.Nature,tobecommanded,mustbeobeyed.FrancisBacon,Britishphilosopher,想支配大自然，就必须遵守大自然的规律。英国哲学家弗朗西斯培根,6.Onetouchofnaturemakesthewholeworldkin.Shakespeare,Britishpoetandplaywright,自然界的一个轻轻触摸，就使得整个世界都有了亲情。英国诗人和剧作家莎士比亚,SR_main,CultureNotes,Reading,ComprehensionTask,SR_CultureNotes1,CultureNotes,1.AlbertSchweitzer(1875-1965),AlbertSchweitzerwasanAlsatianGerman-Frenchtheologian,musician,philosopher,andphysician.SchweitzerchallengedboththesecularviewofJesusasdepictedbyhistorical-criticalmethodologycurrentathistimeincertainacademiccircles,aswellasthetraditionalChristianview,depictingaJesusChristwhoexpectedandpredictedtheimminentendoftheworld.Hereceivedthe1952NobelPeacePrizein,SR_CultureNotes2,1953forhisphilosophyofReverenceforLife,expressedinmanyways,butmostfamouslyinfoundingandsustainingtheAlbertSchweitzerHospitalinLambarn.Asamusicscholarandorganist,hestudiedthemusicofGermancomposerJohannSebastianBachandinfluencedtheOrganreformmovement.,SR_CultureNotes1_pop,SR_CultureNotes3,2.DDT(Dichloro-Diphenyl-Trichloroethane),Definition:DDTisoneofthebestknownsyntheticpesticides.Itisachemicalwithalong,unique,andcontroversialhistory.,SR_CultureNotes4,OriginFirstsynthesizedin1874,DDTs