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【题目】导致我国许多大河滚滚东流流进太平洋的主要原因是:(

A. 地形复杂多样 B. 地势西高东低 C. 国土面积广大 D. 纬度跨度大

【答案】B

【解析】我国地势西高东低,呈三级阶梯状分布,导致我国许多大河受地势的影响,自西向东流,滚滚东流流进太平洋。故本题选B

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