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  3. It is estimated that around 10 percent of the flat roofs in Germany are green. Green roof is an ecologically sound strategy of

It is estimated that around 10 percent of the flat roofs in Germany are green. Green roof is an ecologically sound strategy of

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问题 It is estimated that around 10 percent of the flat roofs in Germany are green.
Green roof is an ecologically sound strategy of spreading green in urban areas.
选项 A、Right
B、Wrong
C、Not mentioned
答案A
解析 答案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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