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【題目】根據(jù)所學知識,回答下列問題。

(1)西北地區(qū)的地形以____________為主,河流很少,且多為____________,是一個以____________為主要自然特征的地區(qū)。

(2)西北地區(qū)干旱的原因:________________________________________________。

(3)西北地區(qū)____________自東向西逐漸減少,植被自東向西依次過渡為草原-荒漠草原-荒漠。

【答案】(1)高原、盆地;內流河;干旱;(2)深居內陸、遠離海洋,山脈對濕潤氣流的阻擋;(3)降水

【解析】(1)西北地區(qū)的地形以高原、盆地為主,河流很少,且多為內流河,是一個以干旱為主要特征的地區(qū)。

(2)西北地區(qū)由于深居內陸、遠離海洋,山脈對濕潤氣流的阻擋,氣候十分干旱。

(3)西北地區(qū)降水自東向西逐漸減少,植被自東向西依次過渡為草原-荒漠草原-荒漠。

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