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1、Howoftendoyoutravelbyplane?Howmuchelectricity阅读理解答案 Howoftendoyoutravelbyplane?Howmuchelectricitydoyouuse?Thesedayseveryoneisworriedaboutthesizeoftheircarbonfootprint.Inordertoreduceglobalwarmingweneedtomakeourcarbonfootprintssmaller.ButhowmuchCO2areweresponsiblefor? AnewbookbyMikeBerners-Lee(
2、aleadingexpertincarbonfootprint)mightbeabletohelp.HowBadareBananas?TheCarbonFootprintofEverythinglooksatthedifferentthingswedoandbuy,andcalculatestheamountofCO2theyproduce.Forexample,tocalculatethefootprintofabottleofjuice,hetriedtofindouthowmuchCO2allofthefollowingcreated:theingredients,theelec
3、tricityusedinthefactory,theequipment,thetravelofthejuice,andthepackaging.It’samazinghowmanydifferentthingsneedtobeincludedineachcalculation.Andit’sfrighteninghowmuchcarbondioxideeverythingproduces.Butallofthiscanhelpusdecidewhichjuicetodrink.FromBerners-Lee’scalculations,it’sclearthatabottleoflo
4、cally-madejuicehasasmallercarbonfootprintthanabottleofimportedone.Thisisbecausetheimportedjuicehasbeentransportedfromfaraway,anditusesmorepackaging. Berners-Leehasevencalculatedthecarbonfootprintofcyclingtowork.Nothingismoreenvironmentallyfriendlythanridingabike,surely?Well,itdependsonwhatyou’v
5、ehadtoeatbefore.Torideabikeweneedenergyandforenergyweneedfood.Soifweeatabananaandthenrideakilometerandahalf,ourfootprintis65gofCO2.However,ifweeatbaconbeforethebikeride,it’s200g.Infact,bananasaregoodingeneralbecausetheydon’tneedpackaging,theycanbetransportedbyboatandtheygrowinnaturalsunlight. S
6、o,doesthismeanthatcyclingisbadfortheenvironment?Absolutelynot,forastart,ifyoucycle,youdon’tuseyourcar,andthefewercarsontheroad,thefewertrafficjams.And carsintrafficjamsproducethreetimesmoreCO2thancarstravelingatspeed.Cyclingalsomakesyouhealthyandlesslikelytogotoahospital.Andhospitalshaveverybig
7、carbonfootprints! Somaybeit’stimeforusalltostartmakingsomechanges.Passmeabananaandabottleoflocaljuice,please. tothepassage,acarbonfootprintshows. oftensomeonetravelsbyplane muchelectricitypeopleuse muchcarbondioxidesome
