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  3. It is estimated that around 10 percent of the flat roofs in Germany are green. One of the benefits of green roofs is the reduct

It is estimated that around 10 percent of the flat roofs in Germany are green. One of the benefits of green roofs is the reduct

admin2009-05-21  24
问题 It is estimated that around 10 percent of the flat roofs in Germany are green.
One of the benefits of green roofs is the reduction of the heat island effect in cities.
选项 A、Right
B、Wrong
C、Not mentioned
答案A
解析 答案与上一题一样，在文章第三段的第二句话。绿色屋顶除了能创造优美的环境，还能带来生态环境方面的诸多改善，如减少能源消耗、净化空气和水、增加城市的绿色植被、减少热岛效应等。
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