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【题目】 黄土高原是我国水土流失最严重的地区,黄土高原的土地总面约为53方平方千米,其流失面积大约43万平方千米,其中严重流失区约有25万平方千米。这里地面支离破碎,生产条件差。彻底治理黄土高原,是我国紧迫而艰巨的任务。

据此完成下列各题。

1黄土高原水土流失严重的人为原因是( )

A.气候干旱,沙丘向南迁移B.地面径流量少,降水集中多暴雨,流水侵蚀严重

C.黄土土质疏松D.人们违反自然规律,不合理地利用土地

2黄土高原的地表特征是( )

A.地表崎岖,典型的喀斯特地形B.雪山连绵,冰川广布

C.一望无际D.千沟万壑,支离破碎

【答案】

1D

2D

【解析】

1黄土高原水土流失严重的原因:自然原因:①季风气候降水集中,多暴雨;②黄土土质疏松;人为原因:①过度放牧和过度砍伐,造成植被的破坏;②不合理的耕作制度(轮荒);③开矿等;D符合题意。

2A地表崎岖,典型的喀斯特地形是云贵高原的特点

B. 雪山连绵,冰川广布是青藏高原的特点

C. 一望无际是内蒙古高原的特点

D. 千沟万壑,支离破碎是黄土高原的特点;

D

了解黄土高原的特点和黄土高原水土流失原因。

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