分析图“荒漠化效应和水-气-生相互作用示意图” ,回答6、7题。 6.图中数字①的正确内容是 A.降水增加,蒸发减弱 B.降水减少,蒸发加强 C.降水增加,蒸发加强 D.降水减少,蒸发减弱 7.图中自然要素相互作用,其中居主导地位的是 A.植被 B.水文 C.地形 D.降水We live in a small village with tall trees or bushes ________ it. A. surrounded B. surrounding C. being surrounded D. to surround