【題目】下列對各種地形的描述，正確的是

A.高原一般在500米以下，邊緣陡峭

B.山地海拔在500米以上，山峰聳立

C.丘陵海拔在500米以下，寬廣平坦

D.平原一般在200米以上，起伏小

【答案】B

【解析】

根據(jù)人們通常把陸地地形分為平原、高原、山地、丘陵和盆地五種基本類型。丘陵海拔較低，地面有起伏，坡度和緩，相對高度一般不超過200米。平原海拔較低，一般在200米以下，地面平坦遼闊。山地海拔較高，一般在500米以上，坡度陡峻，溝谷較深。高原海拔較高，一般在500米以上，地面坦蕩，邊緣比較陡峻。盆地四周高中間低，進行分析解答。

高原一般在500米以上，邊緣陡峭，A錯誤；

山地海拔在500米以上，山峰聳立，B正確；

丘陵海拔較低，地面有起伏，坡度和緩，相對高度一般不超過200米，C錯誤；

平原海拔較低，一般在200米以下，地面平坦遼闊，D錯誤。

故選：B。

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