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  3. It is estimated that around 10 percent of the flat roofs in Germany are green. German people prefer extensive green roof system

It is estimated that around 10 percent of the flat roofs in Germany are green. German people prefer extensive green roof system

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问题 It is estimated that around 10 percent of the flat roofs in Germany are green.
German people prefer extensive green roof systems to intensive ones.
选项 A、Right
B、Wrong
C、Not mentioned
答案C
解析 文章第二段里回答了这个问题。绿色屋顶可分为两类，大面积广泛铺开的以及小面积仔细栽种的。两种类型的绿色屋顶栽种的植物种类不一，用途各异，文中并未提及德国人对两者的偏好。
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