【題目】下圖為我國東部沿海某地等高線地形圖和巖層形態(tài)示意圖。讀圖，回答下列各題。

【1】

A. 河水主要來源于冰雪融水 B. 體現(xiàn)了由赤道向兩極的地域分異規(guī)律

C. 為南方亞熱帶季風(fēng)氣候區(qū) D. 水分是造成自然景觀變化的主導(dǎo)因素

【2】

A. 甲地為向斜谷地，流水的侵蝕作用強烈

B. 丙地河流北岸侵蝕明顯，南岸堆積泥沙

C. 丁地流水侵蝕作用為主，易形成沖積扇

D. 河流流經(jīng)甲--乙段時流速比丙--丁段快

【答案】

【1】C

【2】D

【解析】試題分析：

【1】根據(jù)材料，該區(qū)域位于我國東部沿海，屬于季風(fēng)氣候區(qū)，河水主要來源于大氣降水，A錯。圖中植被變化是海拔高度影響，不能體現(xiàn)由赤道向兩極的地域分異規(guī)律，B錯。平原地區(qū)是亞熱帶常綠林為主，為南方亞熱帶季風(fēng)氣候區(qū)，C對。海拔高度變化是造成自然景觀變化的主導(dǎo)因素，D錯。

【2】圖中甲地巖層向 上拱起，是背斜構(gòu)造，甲地為背斜谷地，流水的侵蝕作用強烈，A錯。根據(jù)指向標，丙地河流南岸侵蝕明顯，北岸堆積泥沙，B錯。丁地位于河口，流水沉積作用為主，易形成三角洲，C錯。河流流經(jīng)甲--乙段時，等高線密集，說明坡度陡，流速比丙--丁段快，D對。

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