2. 外语
  3. An award-winning subterranean skyscraper was recently completed at the University of Minnesota. Designed by David Bennett, the b

An award-winning subterranean skyscraper was recently completed at the University of Minnesota. Designed by David Bennett, the b

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问题     An award-winning subterranean skyscraper was recently completed at the University of Minnesota. Designed by David Bennett, the building plunges 110 feet beneath the campus, peeking above the surface a mere 20 feet.
    You might think it would be dreary inside the building. But a large percentage of the usable space has access to natural light. A" telewindow "on the roof projects a view of the street via a series of lenses and mirrors. In addition,an array of reflective lenses mounted on a panel on the roof beams sunlight 60 feet down.
    " Traditional cities have too much aboveground construction, " says David Bennett. " Green space is lost and the view is disturbed. Future cities will probably be more subterranean than they are today. "
    Why build down instead up? Energy conservation is one. reason. Says Bennett, "Minnesota’s climate varies by a hundred and thirty degrees Fahrenheit, but twenty-five feet underground, the temperature remains at about fifty degrees all year round. " Subterranean construction also permits more visually pleasing land use — for instance, the preservation of an unobstructed view of historic landmark.
Why are subterranean buildings good for energy conservation?
选项 A、Because they use solar energy.
B、Because they don’t need central heating.
C、Because the temperature there remains constant.
D、Because they don’t need air-conditioning.
答案C
解析 从文章最后一段“…the temperature remains at about fifty degrees all year round”可以得出答案。故正确的答案为C。
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