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  3. In the late 1960s many people in North America turned their attention to environmental problems, and new steel-and-glass skyscra

In the late 1960s many people in North America turned their attention to environmental problems, and new steel-and-glass skyscra

admin2013-03-19  58
问题    In the late 1960s many people in North America turned their attention to environmental problems, and new steel-and-glass skyscrapers were widely criticized: Ecologists pointed out that a cluster of tall buildings in a city often overburdens public transportation and parking lot capacities.
    Skyscrapers are also lavish comsumers, and wasters of electric power. In one recent year, the addition of 17 million square feet of skyscraper office space in New York City raised the peak daily demand for electricity by 120,000 kilowattsenough to supply the entire city of Albany, New York, for a day.
    Glass-walled skyscraper’s can be especially wasteful. The beat loss (or gain)through a wall of half-inch plate glass is more than ten times that through a typical masonry wall filled with insulation board. To lessen the strain on heating and air-conditioning equipment, builders of skyscrapers have begun to use double- glazed panels of glass, and reflective glasses coated with silver or gold mirror films that reduce glare as well as heat gain. However, mirror-walled skyscrapers raise the temperature of the surrounding air and affect neighboring buildings.
    Skyscrapers put a severe strain on a city’s sanitation facilities, too. ( if fully occupied, the two World Trade Center towers in New York City would alone generate 2.25 million gallons of raw sewage each year-- as much as a city the size of Stanford, Connecticut, which has a population of more than 109,000. )
    Skyscrapers also interfere with television reception, block bird flyways, and obstruct air traffic. In Boston in the late 1960s, some people even feared that shadows from skyscrapers would kill the grass on Boston Common.
    Still, people continue to build skyscrapers for all the reasons that they have always built them--personal ambition, civic pride, and the desire of owners to have the largest possible amount of rentable space.
According to the passage, in the late 1960s some residents of Boston were concerned with which aspect of skyscrapers?
选项 A、The noise from their construction
B、The removal of trees from building sites
C、The harmful effects on the city’s grass
D、The high cost of rentable office space
答案C
解析 在第五段的最后一句中，即，some people even feared that shadows from skyscrapers would kill the grass on Boston Common，可以看出C为正确。
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