新视野大学英语第三版第四册第四单元sectionA.pptx

FOREIGH LANGUAGE TEACHING AND RESEARCH PRESS AIR FORCE ENGINEERING UNIVERTISY;Earth provides enough to satisfy every man’s need, but not every man’s greed. — Mahatma Gandhi ;;Contents;;Lead-in;Lead-in;Listen and Talk;Listen to the passage again. Work in pairs and discuss the following questions.;1. What is your understanding of a “green city”?; 2.To build a green city, besides the measures given in the passage such as building more healthy parks and reducing pollution, what other measures can you think of? ; Global warming may or may not be the great environmental ______ of the 21st century, but—regardless of whether it is or isn’t—we won’t do much about it. We will argue over it and may even, as a nation, make some fairly solemn-sounding ___________ to avoid it. But the more dramatic and meaningful these commitments seem, the less likely they are to be _________. ; Al Gore calls global warming an “_______________,” as if merely recognizing it could put us on a path to a solution. But the real truth is that we don’t know enough to _____ global warming, and—without major technological ____________—we can’t do much about it. From 2003 to 2050, the world’s population is _________to grow from 6.4 billon to 9.1 billion, a 42% increase. ;;The practical solution is that if global warming is a _______________, the only solution is new technology. Only an aggressive research and development program might find ways of breaking our dependence on _________ or dealing with it.;Questions Previewing;;;;;;Introduction: Two questions are raised to show that people have conflicting ideas about environmental protection. The introduction paves the way for the author’s central argument.;The author introduces two new concepts: environmental luxury environmental necessities;According to the author, what is the ultimate rule followed by rational environmentalism? (Para. 2);How does the author explain environmental necessity ? (Paras. 3-4);Ac