大学英语演讲global-warming-PPT.ppt

Global Warming演讲人：*Main Contents What is global warming?What can we do to stop global warming?What causes global warming?What is global warming doing to us?2What is global warming?Global Warming:Global warming is the increase in the average temperature of the earths near-surface air and oceans in recent decades.3What is global warming?4What causes global warming?5What causes global warming?The squiggle lines coming from the sun are visible light and the lines and arrows inside the car are infrared light.6What causes global warming?DeforestationIndustries emissionsPopulation Growth7What is global warming doing to us?Glaciers are melting.the sea is rising8What is global warming doing to us?In some areas,theoriginal bountiful landnow cracked the mouth,the children do nothave water to drinkand grains to eat.910大家应该也有点累了，稍作休息大家有疑问的，可以询问和交流大家有疑问的，可以询问和交流大家有疑问的，可以询问和交流大家有疑问的，可以询问和交流What can we do to stop global warming?vWalk as far as possible or travel by public transportvUse energy conservation electric appliance as far as possible 11What is global warming doing to us?vDont waste papervTurn off lights when you leavevDont use plastic bags as far as possiblevPlant more trees in your leisure hours.vand so on.12