牛津版上海版八年级下册Unit1TreesReading课件培训资料

IfIplantthisseedintheground,willitbecomeapeartree,Hi?Yes,Lo.That’sstrange.It’sanappleseed.1WhereareHiandLo?2What’sinLo’shand?3WhatdoesHithinkoftheseed?4Whydoeshethinkso?5Whatdoyouthinktheunit’stopicwillbeabout?Theyareinthegarden.It’sanappleseed.Itwillbecomeapeartree.Lodidn’ttellhimitwasanappleseed.Treesorplants.Beforeyoureadtheinterview,trythisonlinequiz.1Matchthepictureswiththewords.()1whales()2humans()3trees()4mice()5tortoises2Howlongdotheylive?Matchthelivingthingsontheleftwiththeaverageagesontheright.abcdemicetreestortoiseswhaleshumansiiiiiiivv70years150years40years4,000years3years3Whatdoespollutionmean?4Whichkindofpollutiondotreeshelpfight?a)airpollutionb)waterpollutionc)noisepollutiond)alloftheaboveAirpollution:Theleavesoftreesremovedangerouschemicalsanddirtfromtheairandproduceoxygen.Waterpollution:Treesaroundreservoirshelpkeepthewatercleanbyremovingdustanddirtfromtheair,andtheirrootspreventthesoilfrombeingwashedintothewater.Noisepollution:Treesreducethenoisemadebytraffic.5Whichofthefollowingitemscomefromtrees?a)nutsb)beansc)cottond)oile)teaf)rubbera)nuts,e.g.,walnuts,colanuts(usedincola)b)beans,e.g.,coffee,cocoa(usedtomakechocolate)c)Cottonplantsareplantedfresheveryyearintropicalandsubtropicalareas.Cottonisusedtomakefabrics.d)oil,e.g.,coconutoil,palmoile)Teaismadefromleaves.f)Rubberismadefromthesapoftherubbertree(latex).6Thebest-knowntreesinShanghaiaremagnoliatrees.Theirlarge,sweet-smellingflowersareknownasthecityflowersofShanghai.Whichpictureshowsamagnoliatree?abcThebananatree(a)isusuallycalledatree,butitisnotreallyonebecauseitstrunkisnotmadeofwood.Itproducesfruitanditsleavescanbeusedasroofingmaterial.Therearemanydifferentkindsofpalmtrees(b).Thecoconutpalmproducescoconutswhoseoutsideshell(thehusk)canbemadeintoropesorburnedforfirewood.Themilkcanbedrunkandthefleshofthecoconutcanbeeaten.Oilpressedfromthefleshisusedbothforcookingandinskincreams.Theleavesareusedtomakebrooms.Magnoliatrees(c)aresmalltomedium-sizedtreesnotedfortheirlarge,showyblossomsinearlyspring,andlargeleaves.ABeforeyoureadtheinterview,lookatthetitle,theintroductionandthepictures.Judyiscollectingsomefactsforaclassprojectonpollution.SheisinterviewingDoctorRay,ascientist,abouttrees.BDonotreadthewholeinterviewyetanddecidewhetherthefollowingstatementsareT(true)orF(false).1Thepollutionfightersareprobablyscientists.T/F2Manyusefulproductscomefromtrees.T/F3Treesarenaturalairconditioners.T/F4Treescanpassinformationtooneanother.T/FCScantheinterviewandcheckifyouhavegotthecorrectchoicesaboutthefollowingstatements.1Thepollutionfightersareprobablyscientists.T/F2Manyusefulproductscomefromtrees.T/F3Treesarenaturalairconditioners.T/F4Treescanpassinformationtooneanother.T/FJudyiscollectingsomefactsforaclassprojectonpollution.SheisinterviewingDoctorRay,ascientist,abouttrees.JUDYWhyareyousointerestedintrees,DoctorRay?DRRAYThey’rethebiggestandoldestlivingthingsontheEarth,Judy.JUDYYes,butwhatgoodaretrees?Theymakestreetsmorebeautifulandlessnoisy,butwhatelsecantheydo?DRRAYWell,thewoodinyourpencil,therubberontheendofyourpencil,thepaperinyournotebookandthefruitinyourbowlallcomefromtrees!And,Isupposeyoualsoenjoybreathingpure,coolair.JUDYOfcourse.DRRAYThenyoumustthanktreesforthattoo.Theytakeharmfulgasesfromtheair,andreleaseoxygenbackintotheair.Howmanypeoplearethereinyourclass,Judy?JUDYForty-six.DRRAYWell,oneandahalfhectaresoftreescouldproduceenoughoxygentokeepyourwholeclassaliveandhealthyforawholeyear.JUDYThat’swonderful!DRRAYTreescooltheairaswellascleanit.Theyarenaturalairconditioners.Threetreescandothejobof15airconditionersrunningalmostallday.JUDYYoucertainlyknowalotabouttrees,DoctorRay.DRRAYThankyou,Judy,butIdon’t,really.Scientistsareonlynowbeginningtounderstandthem.Forexample,wheninsectsattackatree,itcanwarnitsneighbours.Thetreescanthenprotectthemselvesbyproducingachemicalthatmakestheirleavestastenasty.Andsometreescanjointheirrootstogetherunderground,andpassfoodandwatertoeachother.Treesarecommunicatingwithoneanother,butwedon’tknowhow.JUDYAretreesindanger?DRRAYIngreatdanger.Wecutdownandburnmillionseveryyear,butwereplacehardlyanyofthem.Wearedestroyingourbestfightersagainstpollution.1Workbook8B,page1.