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1、课时达标(二十九)Unit4Globalwarming建议时间/35分钟(见学用课时P67)Ⅰ阅读理解A课标话题人与自然·人与环境体裁记叙文词 数383难度PeopleataneastLondonworkshoparepayingtolearnhowtomaketheirownbicycle.Nothingunusualaboutthat?ButatthisBambooBicycleClubsession,thebikesarebeingmadewithbamboo.Inalltheexcitementtoclaimbi
2、cyclestheanswertocrowdedroads,pollutedcityairandourownhealth,thematerialsusedtomanufacturethosebikesoftengetoverlooked.Carbonfiber,forexample,isincreasinglypopularfornewbicycles,particularlyracingbikes.Thematerial,thoughlightweightandstrong,isdifficulttorecycleand
3、cannotbemelteddownandreusedinitsoriginalform,unlikealuminumandsteel.Carbonfiberisalsodangerousanddirtytoworkwith,soit'sanunlikelymaterialforencouragingpeopletobuildandrepairtheirownbicycles.It'salsoincrediblywasteful.Mostpeoplereplacearacingbikeeverythreeyears,add
4、ingtocarbonfiberwaste.Motivatedtocutthewasteandmakebikebuildingmorepopular,Marrhassetupaclubtoteachpeoplehowtomaketheirownbikesoutofbamboo.Farfromjustpandafood,bambooisastrongandpopularbuildingmaterialinAsia,andit'swellsuitedtobeingshapedintoabicycleframe.Itcangro
5、wfromseedtoharvestinlessthanfouryears.Still,itssustainabilityreliesonproductionstandards,forexample,avoidingtheuseofchemicalfertilizersorpesticides,andensuringnaturalforestisnotclearedforplantations.Theclub'sworkshopinLondonmakesaround500bicyclesayear,withatwodays
6、essionbuildingyourownbamboobicyclecostingaround￡600.Theclubhasopenedfranchises(特许经营权)inGermanyandItaly,withmoreinCanadaandSouthAfricaopeningsoon.Aswellasteachingpeopletobuildbikes,theclubwasinvitedbytwoNGOsworkinginKenyalastyeartohelpteachstudentsinMalaanearNairob
7、ihowtorepair,maintainandbuildbicycles.Thefinalambitionistohelpreconnectpeoplewithbikesandthematerialsusedtobuildthem.Inarecentinterview,Marrtalkedaboutthetrendybikesharing.“Whilebikesharingcompanieshavepromisedlotsintermsofmoresustainabletransport,theyhaven'tyetch
8、angedwastefulconsumerattitudes，”Marrcommented,addingthathewasshockedbyphotosofthousandsofunwantedbicyclesabandonedincitiesacrossChina.语篇导读 本文主要介绍的是一个自行车
