仁愛版英語九年級(jí)上冊(cè)u(píng)nit 2 topic 1《population has caused too many problems》（sectionc）練習(xí)題(文件)
【正文】 prevent it. Time brings us more people, and more people bring us more industry, more cars, larger cities and growing use of manmade materials. How can we understand and solve this problem? The fact is that pollution is caused by man —by his desire (欲望 ） for a modem way of life. So we are often ready to offer everything: clean water, good food, our health and the future of our children. There are more people from the countryside moving into the cities and enjoying the modem society. But as the technological momentum (勢(shì)頭 ) has grown in the last twenty years, pollution has bee a serious problem. Now we have to stop to ask ourselves where we are going and why. It makes one think of the story about the airline pilot who told his passengers over the loudspeaker, “I’ve got some good news and bad news. The good
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