Unit1Reading課件-牛津上海版八年級(jí)英語(yǔ)下冊(cè)

1NatureandenvironmentTreesReadingAMessageonTweeterFeb.12th2025GraphCommentChinaisplantingalotoftreestopreventdesertization,andthoseprojectsaregoingquitewell!!!Hopeweworktogethertomakeitabetterworld!I’vereadthatbothChinaandIndiahavebeentryingreallyhardwhenitcomestotheenvironment.Applauseforthem!WhenthewholeworldisbusingcriticizingIndiathatweIndiansaredestroyingtheearth,thisiswhatweweredoingandwillcontinuetodo.Happytoseewebroughtachangeintheworldratherthanjustcriticizing.Whatdoyouknowabout…?Beforeyoureadtheinterview,trythisonlinequiz.Matchthepictureswiththewords.abcde()1whales()2humans()3trees()4mice()5tortoisescebad/?t?:t?s/Howlongdotheylive?Matchthelivingthingsontheleftwiththeaverageagesontheright.abcdemicetreestortoiseswhaleshumansiiiiiiivv70years150years40years4,000years3yearsWhatdoespollutionmean?Itmeanstheactionofmakingthingsdirtyandunhealthy.Whichkindofpollutiondotreeshelpfight?airpollutionwaterpollutionnoisepollutionalloftheaboveHow???Airpollution:Theleavesoftreesremovedangerouschemicalsanddirtfromtheairandproduceoxygen.Waterpollution:Treesaroundreservoirshelpkeepthewatercleanbyremovingdustanddirtfromtheair,andtheirrootspreventthesoilfrombeingwashedintothewater.Noisepollution:Treesreducethenoisemadebytraffic.Whichofthefollowingitemscomefromtrees?nutsbeanscottonoiltearubberShareexamplesnuts,e.g.,walnuts,colanuts(usedincola)beans,e.g.,coffee,cocoa(usedtomakechocolate)Cottonplantsareplantedfresheveryyearintropicalandsubtropicalareas.Cottonisusedtomakefabrics.oil,e.g.,coconutoil,palmoilTeaismadefromleaves.Rubberismadefromthesapoftherubbertree(latex).Thebest-knowntreesinShanghaiaremagnoliatrees.Theirlarge,sweet-smellingflowersareknownasthecityflowersofShanghai.Whichpictureshowsamagnoliatree?abcThebananatree(a)isusuallycalledatree,butitisnotreallyonebecauseitstrunkisnotmadeofwood.Itproducesfruitanditsleavescanbeusedasroofingmaterial.Therearemanydifferentkindsofpalmtrees(b).Thecoconutpalmproducescoconutswhoseoutsideshell(thehusk)canbemadeintoropesorburnedforfirewood.Themilkcanbedrunkandthefleshofthecoconutcanbeeaten.Oilpressedfromthefleshisusedbothforcookingandinskincreams.Theleavesareusedtomakebrooms.Magnoliatrees(c)aresmalltomedium-sizedtreesnotedfortheirlarge,showyblossomsinearlyspring,andlargeleaves.BeforeyoureadBeforeyoureadtheinterview,lookatthetitle,theintroductionandthepictures.Judyiscollectingsomefactsforaclassprojectonpollution.SheisinterviewingDoctorRay,ascientist,abouttrees.Donotreadthewholeinterviewyetand

decidewhetherthefollowingstatementsareT(true)orF(false).Thepollutionfightersareprobablyscientists. T/FManyusefulproductscomefromtrees. T/FTreesarenatural

airconditioners. T/FTreescanpassinformationtooneanother. T/FReadJudyiscollectingsomefactsforaclassprojectonpollution.SheisinterviewingDoctorRay,ascientist,abouttrees.JUDY Whyareyousointerestedintrees,

DoctorRay?DRRAY They’rethebiggestandoldestlivingthingsontheEarth,Judy.JUDY Yes,butwhatgoodaretrees?Theymakestreetsmorebeautifulandlessnoisy,butwhatelsecantheydo?DRRAY Well,thewoodinyourpencil,

therubberontheendofyour

pencil,thepaperinyour

notebookandthefruitinyour

bowlallcomefromtrees!

And,Isupposeyoualsoenjoy

breathing

pure,coolair.JUDY Ofcourse.WhyisDrRaysointerestedintrees?WhoisDoctorRay?WhydoesJudyneedtointerviewDrRay?Sheisascientist.Becausesheneedssomefactsforaclassprojectonpollution.Becausethey’rethebiggestandoldestlivingthingsontheEarth.Judyknowsonlyalittleontrees.Canyougiveanexample?HowmanyexamplesdoesDrRaygive?Whatarethey?Sheknowsthattressmakestreetsmorebeautifulandlessnoisy.Shegivesfourexamples.Wood,rubber,paperandfruit.DRRAY Thenyoumustthanktreesforthattoo.

Theytakeharmfulgasesfromtheair,andrelease

oxygenbackintotheair.Howmanypeoplearethereinyourclass,Judy?JUDY Forty-six.DRRAY Well,oneandahalfhectaresoftreescouldproduceenoughoxygentokeepyourwholeclassaliveandhealthyforawholeyear.JUDY That’swonderful!DRRAY Treescooltheairaswellas

cleanit.Theyarenaturalair

conditioners.Threetreescan

dothejobof15airconditioners

runningalmostallday.WhydoesDrRay

saythatJudyshouldthanktreesforpure,coolair?WhydoesDrRay

saythattreesarenaturalairconditioners?Becausetreestakeharmful

gasesfromtheairandreleaseoxygenbackintotheair.Becausetreescooltheair

aswellascleanit.Findthenumbers.Thereare________studentsinJudy’sclass.__________hectaresoftreescouldproduceenoughoxygentokeepJudy’swholeclassaliveandhealthyforawholeyear._______treescandothejobof_______airconditionersrunningalmostallday.461.5315JUDY Youcertainlyknowalotabouttrees,

DoctorRay.DRRAY Thankyou,Judy,butIdon’t,really.Scientistsareonlynowbeginningtounderstandthem.Forexample,wheninsectsattackatree,itcanwarnitsneighbours.Thetreescanthenprotectthemselvesbyproducingachemicalthatmakestheirleavestastenasty.Andsometreescanjointheir

rootstogetherunderground,

andpassfoodandwaterto

eachother.Treesare

communicatingwith

oneanother,butwe

don’tknowhow.Scientistsarebeginningtounderstandtreesandtheyknowtreescommunicatewithoneanother.Canyougivetwoexamples?Wheninsectsattackatree,itcanwarnitsneighbours.Thetreescanthenprotectthemselvesbyproducingachemicalthatmakestheirleavestastenasty.Sometreescanjointheirrootstogetherunderground,andpassfoodandwatertoeachother.JUDY Aretreesindanger?DRRAY Ingreatdanger.Wecutdownandburnmillionseveryyear,butwereplace

hardlyanyofthem.Wearedestroyingourbestfightersagainstpollution.VocabularyAFindthesewordsandphrasesintheinterviewonpage3.Readthewordsaroundthemandchoosethebestmeanings.supposeknowthinkitistrueorpossibleaskpurecleanhotcomfortablereleasebringintakeawayletoutrunningtravellingworkingplayingcommunicatingwithattackingexchanginginformationwithjoininghardlyanyquitealotalmostnonealargenumberBFindthewordsinColumnAintheinterview

andmatchthemwiththemeaningsinColumnB.AB()1()2()3()4()5()6factnaturalwarnjoinburnreplaceabcdefmadebynature,notbymanusesomethingelseinsteaddamagesomethingbyfireconnectthingstogetherathingthatittruesaythatsomethingbad

ordangerousmayhappeneafdcbComprehensionAThesearesomeofthenotesthatJudytookwhensheinterviewedDoctorRay.However,shemadefourmistakes.ReadthroughtheinterviewandcorrectJudy’smistakes.Youmayhavetochangeoneormorewords.Trees:livemuchlongerthanpeople;producewood,rubber,paperandfruit;

Trees:takeoxygenfromtheair;heattheair;arelikeairconditioners;cannotprotectthemselvesagainstinsects;cansharefoodandwateramongthemselves;areindanger,mainlyfrominsects.releaseoxygeninto(OR:oxygenharmfulgases)cool

can

people/humanBRitaisaskingJudyquestionsabouttrees.

JudyisgivingYesorNoanswersandsupportingheranswerswithexamplesfromtheinterview.ReadRita’squestionsandcompleteJudy’sanswerswithoneormorewords.Thefirstonehasbeendoneforyou.1RitaWe

getsomeusefulthingsfromtrees,don’twe?Judy______.Twoexamplesare______________________________________________________________________.2RitaIsittruethattreesdotwomainthingstotheair?Judy______.They_________________________________________________________________________________.YeswoodandrubberYescleanitandcoolit3RitaI’veheardthatonetreehasthepower

of15airconditioners.Isthatright?Judy______.Onetreehasthepowerof______________________________________________________________.4RitaScientistsknowalotabouttrees,don’tthey?Judy______.Theyare_____________________________________________________________________________.5RitaCantreesreallycommunicatewithoneanother?Judy______.Forexample,ifinsects_________________________________________________________________.NofiveairconditionersNoonlynowbeginningtounderstandthemYesattackatree,itcanwarnitsneighbours6RitaAndcantheyreallyprotectthemselvesfrominsects?Judy______.They