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【題目】讀我國某區(qū)域圖,然后回答問題。

(1)上圖所示范圍的地形自北向南大致可以分為A、B、C三大部分,其中A屬于________________高原,B屬于_______________平原

(2)簡述B平原發(fā)展耕作業(yè)的自然條件。

(3)說明西安的地理位置特征

【答案】

(1)黃土高原;渭河平原

(2)B平原地形平坦;土層深厚、土壤肥沃;氣候溫暖濕潤;水源豐富,便于灌溉。

(3)北半球、東半球;中緯度地區(qū);北臨渭河,南鄰秦嶺;中國大陸腹地黃河流域中部的關中盆地;西漢時期陸上絲綢之路的起點,隴海鐵路上的鐵路樞紐;陜西省省會

【解析】

試題分析:

(1)結合河流和等高線的分布判斷,A區(qū)域等高線數(shù)值大于1500米,等高線稀疏,判讀為高原地形,結合圖中河流、城市可以判斷為黃土高原。B區(qū)域等高線數(shù)值多在500米以下,等高線稀疏,判斷為平原地形,結合城市與河流信息,可以判斷B表示渭河平原。

(2)影響耕作業(yè)的自然條件從氣候、地形、土壤、水源等方面依次分析。渭河平原屬于河流沖積形成的,土壤肥沃,土層深厚,并且有渭河流經,灌溉方便。地形平坦,利于耕作。氣候溫暖濕潤,有利于種植業(yè)發(fā)展。

(3)城市地理位置主要從絕對位置以及相對位置描述。絕對位置主要考慮經緯度位置,半球位置。相對位置主要描述與周邊其他地理事物的關系,包括與城市、鐵路、主要地形區(qū)等的相對位置關系。

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