Unit 4Global warmingwidespread averagecasualcircumstancerefreshelectricalexistenceadvocatecommitmentpollutiondisagreementgrowtheducatorcontribution节约的；的；经济的的公公顷外部的；外面的外部的；外面的个人；个体个人；个体单独的；个独的；个别的的发动机机容器；罐容器；罐头微波炉；微波微波炉；微波口号；口号；标语标题on the wholeon behalf ofput up withso long asand so onturn upmake a differencecarry outhave little effect oninstead ofso long as you It takes a lot of energyare using itOn the whole/In a wordthink highly of the planan aboveRepresenting my whole familyOn behalf of my whole familyshould live a lowcarbon lifemade a difference toput forwardputting upput upput up with/tolerateshould I abandonprotectingtoshould make some contributions toAs long as you keep practicingif necessary