【題目】下圖為“沿106.5°E我國(guó)局部地形剖面圖”,回答下列各題。
【1】圖中①地形區(qū)為
A.黃淮海平原 B.四川盆地
C.江漢平原 D.黃土高原
【2】關(guān)于③地形區(qū)的特點(diǎn),描述正確的是
A.冰川廣布,平坦開闊
B.喀斯特地貌廣布,地表崎嶇
C.千溝萬壑,支離破碎
D.遠(yuǎn)看是山,近看成川
【3】有關(guān)②地區(qū)的敘述,正確的是
A.土壤鹽堿化嚴(yán)重,多中、低產(chǎn)田
B.地勢(shì)平坦,草原遼闊
C.水土流失嚴(yán)重,小流域宜打壩淤地
D.冬季溫暖,河網(wǎng)密布,水土流失嚴(yán)重
【答案】
【1】D
【2】B
【3】D
【解析】
試題分析:
【1】圖示為沿106.5°E我國(guó)局部地形剖面圖,圖中①地形區(qū)位于秦嶺北側(cè),是黃土高原,D對(duì)。黃淮海平原位于115°E以東地區(qū),A錯(cuò)。四川盆地位于秦嶺以南,B錯(cuò)。江漢平原 位于110°E以東,C錯(cuò)。
【2】根據(jù)經(jīng)度和地形剖面圖,③地形區(qū)位于四川盆地南側(cè),是云貴高原,喀斯特地貌廣布,地表崎嶇,B對(duì)。緯度低,海拔較低,沒有永久冰川分布,地形崎嶇,A錯(cuò)。千溝萬壑,支離破碎是黃土高原的景觀,C錯(cuò)。遠(yuǎn)看是山,近看成川是青藏高原的寫照,D錯(cuò)。
【3】結(jié)合前面分析,②地區(qū)是四川盆地,由于四面高山環(huán)繞,盆地內(nèi)冬季溫暖,河網(wǎng)密布,水土流失嚴(yán)重,D對(duì)。土壤肥沃,沒有鹽堿化問題,A錯(cuò)。盆地內(nèi)部是有主要商品糧基礎(chǔ),不是牧區(qū)景觀,B錯(cuò)。 水土流失嚴(yán)重,小流域宜打壩淤地是黃土高原的特征。
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