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【题目】读我国主要山脉分布图及地形剖面图,回答问题。

(1)由剖面图可以看出,我国地势特征是____________,呈三级阶梯状分布。

(2)字母A、B所示山脉是我国地势第二、第三级阶梯的分界线。其中,山脉A大致的走向是________________;山脉B的名称是________________。

(3)图中山脉C和淮河组成了我国重要的地理分界线,山脉C的名称是________。请列举该分界线的两项重要地理意义

【答案】(1)西高东低

(2)东北---西南;

(3)800毫米等降水量线;一月0°C等温线

【解析】(1)由剖面图可以看出,我国地势特征是西高东低,呈三级阶梯状分布。

(2)由图可知,山脉A大致的走向是东北-西南走向,山脉B的名称是太行山。

(3)图中山脉C和淮河组成了我国重要的地理分界线,山脉C的名称是秦岭,该分界线大致与我国800毫米等降水量线和一月0°C等温线一致。

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