[题目]下图为某区域等高线地形与地质剖面图.读图完成下列问题.[1]A. 100米 B. 200米 C. 199米 D. 150米[2]A. 山谷 B. 背斜C. 山脊 D. 向斜[3]A. 褶皱弯曲 B. 挤压抬升C. 流水沉积 D. 外力侵蚀题目和参考答案——青夏教育精英家教网—

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【题目】下图为某区域等高线地形（单位：米）与地质剖面图，读图完成下列问题。

【1】

A. 100米 B. 200米 C. 199米 D. 150米

【2】

A. 山谷 B. 背斜

C. 山脊 D. 向斜

【3】

A. 褶皱弯曲 B. 挤压抬升

C. 流水沉积 D. 外力侵蚀

【答案】

【1】C

【2】B

【3】D

【解析】试题分析：

【1】读图根据等高线递变规律，乙地海拔高度为150-200米，甲地海拔为0-50米。计算可知，两地相对高差100<H<200，故选C。

【2】读图可知，甲处中间岩层向上弯曲，判断为背斜地质构造。故选B。

【3】根据上题判断，甲处为背斜，一般形成山地地形，但根据等高线弯曲状况，该处形成谷地，是由于该处顶部受张力影响，容易受外力侵蚀，形成谷地。故选D。

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