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【题目】秦岭淮河线是我国的一条重要地理分界线,据此完成下列各题。

【1】有关这条分界线南北两侧区域差异的叙述,正确的是

A.秦岭淮河以北耕地以旱地为主,主要糖料作物是甘蔗

B.秦岭淮河以南耕地以水田为主,主要粮食作物是水稻

C.秦岭淮河以北的典型植被是亚寒带针叶林

D.秦岭淮河以南的植被主要是热带季雨林

【2】 造成上述差异的主要原因是

A.地形差异 B.海陆位置不同

C.纬度位置不同 D.山地阻挡作用

【答案】

【1】B

【2】C

【解析】

试题分析:

【1】秦岭淮河以北耕地以旱地为主,主要糖料作物是甜菜,A错。秦岭淮河以南耕地以水田为主,主要粮食作物是水稻,B对。秦岭淮河以北的典型植被是温带落叶阔叶林和草地,C错。秦岭淮河以南的植被主要是亚热带常绿阔叶林,D错。

【2】秦岭-淮河一线是我国亚热带和暖温带的分界线,分界线大致呈东西方向延伸,造成上述差异的主要原因是纬度位置不同,C对。地形差异、海陆位置不同、山地阻挡作用不是分界线呈东西方向延伸,形成上述差异的主要原因,A、B、D错。

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