庐山东谷区别墅数量呈现出：距河流越远，数量减少的特点，其主要原因是 ① 水源 ② 地表坡度 ③气温 ④ 降水 ⑤土壤 The number of villas in the East Valley presents that the farther away from the river, the lower the number is. The main reason is that ① water source ② land slope ③ temperature ④ precipitation ⑤ soil

A.消夏避暑 avoiding heat in summer

B.便于传教 easy to do missionary work

C.躲避战火 avoid the war at that time

D.成本较低 lower cost of construction

A.降水补给

B.融水补给

C.地下水补给

D.湖泊与沼泽补给

A.片流

B.洪流

C.河流

D.冰川

A.降水

B.地形

C.气温

D.土壤

A.城市土壤压实

B.土壤水库功能失效

C.地表封闭显著增加地表径流,加剧洪涝灾害

D.土壤杂质含量较小,有机质含量较多

A.光照充足

B.水源充足

C.降水丰富

D.土壤肥沃