【題目】 黃土高原是我國水土流失最嚴重的地區，黃土高原的土地總面約為53方平方千米，其流失面積大約43萬平方千米，其中嚴重流失區約有25萬平方千米。這里地面支離破碎，生產條件差。徹底治理黃土高原，是我國緊迫而艱巨的任務。
據此完成下列各題。
【1】黃土高原水土流失嚴重的人為原因是( )
A.氣候干旱，沙丘向南遷移B.地面徑流量少，降水集中多暴雨，流水侵蝕嚴重
C.黃土土質疏松D.人們違反自然規律，不合理地利用土地
【2】黃土高原的地表特征是( )
A.地表崎嶇，典型的喀斯特地形B.雪山連綿，冰川廣布
C.一望無際D.千溝萬壑，支離破碎
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