【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(qiáng)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(shí)流速比丙--丁段快

【答案】

1C

2D

【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(cuò)。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(cuò)。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(cuò)。

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(qiáng)烈,A錯(cuò)。根據(jù)指向標(biāo),丙地河流南岸侵蝕明顯,北岸堆積泥沙,B錯(cuò)。丁地位于河口,流水沉積作用為主,易形成三角洲,C錯(cuò)。河流流經(jīng)甲--乙段時(shí),等高線密集,說明坡度陡,流速比丙--丁段快,D對。

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