大学与体验英语第三册一单元leadin.ppt

;LISTEN;Turn to p. 8, and let’s listen. ; Global warming may be the most harmful environmental problem 1) _____________ have created, and the most difficult to solve. Our society is largely 2) ________ by the fossil fuels that cause global warming. Its growing consequences ― ecological disruption, floods, droughts, disease ― are convincing more and more people that we must cut down 3) ___________ pollution. Many people view global warming as a problem too large and too 4) ________ for anything they can do to 5) ________________. However, in reality, there are lots of things we can do to stop, or at least to reduce it.; Global warming may be the most harmful environmental problem 1) _____________ have created, and the most difficult to solve. Our society is largely 2) ________ by the fossil fuels that cause global warming. Its growing consequences ― ecological disruption, floods, droughts, disease ― are convincing more and more people that we must cut down 3) ___________ pollution. Many people view global warming as a problem too large and too 4) ________ for anything they can do to 5) ________________. However, in reality, there are lots of things we can do to stop, or at least to reduce it.; Global warming may be the most harmful environmental problem 1) _____________ have created, and the most difficult to solve. Our society is largely 2) ________ by the fossil fuels that cause global warming. Its growing consequences ― ecological disruption, floods, droughts, disease ― are convincing more and more people that we must cut down 3) ___________ pollution. Many people view global warming as a problem too large and too 4) ________ for anything they can do to 5) ________________. However, in reality, there are lots of things we can do to stop, or at least to reduce it.; Global warming may be the most harmful environmental problem 1) _____________ have created, and the most difficult to solve. Our society is largely 2) ________ by the fossil fuels that cause global