[题目]下图为我国东部沿海某地等高线地形图和岩层形态示意图.读图.回答下列各题.[1]A. 河水主要来源于冰雪融水 B. 体现了由赤道向两极的地域分异规律C. 为南方亚热带季风气候区 D. 水分是造成自然景观变化的主导因素[2]A. 甲地为向斜谷地.流水的侵蚀作用强烈B. 丙地河流北岸侵蚀明显.南岸堆积泥沙C. 丁地流水侵蚀作用为主.易形成冲积扇题目和参考答案——青夏教育精英家教网—

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【题目】下图为我国东部沿海某地等高线地形图和岩层形态示意图。读图，回答下列各题。

【1】

A. 河水主要来源于冰雪融水 B. 体现了由赤道向两极的地域分异规律

C. 为南方亚热带季风气候区 D. 水分是造成自然景观变化的主导因素

【2】

A. 甲地为向斜谷地，流水的侵蚀作用强烈

B. 丙地河流北岸侵蚀明显，南岸堆积泥沙

C. 丁地流水侵蚀作用为主，易形成冲积扇

D. 河流流经甲--乙段时流速比丙--丁段快

【答案】

【1】C

【2】D

【解析】试题分析：

【1】根据材料，该区域位于我国东部沿海，属于季风气候区，河水主要来源于大气降水，A错。图中植被变化是海拔高度影响，不能体现由赤道向两极的地域分异规律，B错。平原地区是亚热带常绿林为主，为南方亚热带季风气候区，C对。海拔高度变化是造成自然景观变化的主导因素，D错。

【2】图中甲地岩层向上拱起，是背斜构造，甲地为背斜谷地，流水的侵蚀作用强烈，A错。根据指向标，丙地河流南岸侵蚀明显，北岸堆积泥沙，B错。丁地位于河口，流水沉积作用为主，易形成三角洲，C错。河流流经甲--乙段时，等高线密集，说明坡度陡，流速比丙--丁段快，D对。

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