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【题目】 下列属于我国地势第一、第二级阶梯分界线的是(

A.大兴安岭太行山脉巫山雪峰山 B.昆仑山脉祁连山脉横断山脉

C.天山山脉阴山山脉燕山山脉 D.长白山脉武夷山

【答案】B

【解析】

试题分析:

我国地势西高东低,呈三级阶梯分布。其中昆仑山脉、祁连山脉、横断山脉一线是地势第一阶梯和第二阶梯的分界山脉,大兴安岭、太行山、巫山、雪峰山一线是地势第二阶梯和第三阶梯的分界山脉,故本题选B。

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