c Many peopls view cities lnrgely in negative torms as crowded,dirty:unhealthy ments that are breeding grounds for dlicase and erime.People fenr that as cities igger living sonditions wll got wors.Towng number of conomists,urban erirom ood news.Mny planers now believe big esoffern to dingth the problem of arth's growing population. Harvarreperh believes that tbnagely oive benefitGlaropimisireleeted in the title of his bokTheT Cryarguetht por pope flock tbeauetha'where the moeys Citiesre produtive becau ofbencef space betwn peoplewhich reducs the o ofodideas Whle the flow of goods hasawaysbeen oranto ieswhat is most impran ody is the flow of ideas.Sucessfu cite attract and reward smart people with higher wages,and they enable people to lear from oe another.In the trading floor of the New York Stock Exchange on Wall Street,employees work in one open, crowded space sharing information."They value knowledge over space.That's what the modern city is all about." Another champion of urbanization is environmentalist Stewart Brand.From an ecological perspective,says Brand,moving people out of cities would be disastrous.Because cities are dense,they allow half of the world's population to live on about four percent of the land, leaving more space for open country,such as farmland.People living in cities also have less impact per capita(人均)on the environment,Their roads,sewerst(下水道)，and power lines are shorter and require fewer resources to build and operate.City apartments require less energy to heat,cool,and light than larger houses in suburbs and rural areas.Most importantly,people living in dense cities drive less.They can walk to many destinations,and public transportation is practical because enough people travel regularly to the same places.As a result,dense cities tend to produce fewer greenhouse gas emissions per person than scattered,sprawling suburbs. Despite the negative aspects such as pollution and serious problems like urban slums,it is a mistake to see urbanization as evil;instead,we should view it as an inevitable part of development.Rapid growth itself isnot the real problemthe larger issue is how to manage the growth. 28.Why does the author mention the New York Stock Exchange in Paragraph2 A.To indicate the space there is valuable. B.To show how goods can be exchanged. C.Toillustrate the importance of information flow. D.To deseribe what a modern city should look like. 第6页共12页
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