我国地势第二、三级阶梯的分界线是( )     A. 大兴安岭﹣阴

我国地势第二、三级阶梯的分界线是(  )

     A 大兴安岭﹣阴山﹣贺兰山﹣巴颜喀拉山

     B 昆仑山﹣祁连山﹣横断山

     C 大兴安岭﹣太行山﹣巫山﹣雪峰山

     D 秦岭﹣淮河线

答案

C

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