【题目】分布在我国地势第二阶梯上的主要地形类型是
A.高原、山地B.高原、盆地C.盆地、平原D.平原、丘陵
【答案】B
【解析】
根据我国的地势特点是:西高东低,呈三级阶梯状分布.第一、二阶梯的分界山脉是昆仑山脉、祁连山脉、横断山脉一线,第二、三阶梯的分界山脉是大兴安岭、太行山、巫山、雪峰山一线.第二阶梯上主要分布有塔里木盆地、四川盆地、准噶尔盆地、内蒙古高原、黄土高原、云贵高原等,地形以高原和盆地为主,进行分析解答。
我国地势特点为西高东低,呈三级阶梯状分布;第一阶梯上主要有青藏高原、柴达木盆地,地形以高原、盆地为主;第二阶梯上主要分布有塔里木盆地、四川盆地、准噶尔盆地、内蒙古高原、黄土高原、云贵高原等,地形以高原和盆地为主;第三阶梯的地形区有东北平原、华北平原、长江中下游平原,辽东丘陵、山东丘陵、东南丘陵,因此第三级阶梯地形以平原、丘陵为主。故选项B符合题意。故选:B。
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