【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(guān)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(jié)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(jié)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(jié)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(jīng)，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(jīng)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(guān)系，包括與城市、鐵路、主要地形區(qū)等的相對位置關(guān)系。

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