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【題目】讀哈爾濱和廣州各月氣溫曲線圖，回答下列問題：

（1）表示哈爾濱的是 ，表示廣州的是 。

（2）1月份，兩地氣溫相差約 ℃，這說明我國冬季氣溫分布特點 。

（3）7月份，兩地氣溫相差約 ℃，這反映我國夏季氣溫分布特點是 。

（4）A圖氣溫的年較差約 ℃；B圖氣溫的年較差約 ℃。

【答案】

（1）圖A 圖B

（2）35 南北溫差大，氣溫由南向北逐漸降低

（3）5 全國普遍高溫

（4）43 13

【解析】

試題分析：本題考查我國氣溫分布規(guī)律。（1）從兩幅氣溫曲線圖可以看出，甲圖氣溫年較差較大，應為我國位置較北的城市哈爾濱，乙圖氣溫年較差較小，應為我國位置較南的城市廣州。（2）從兩幅氣溫曲線圖可以看出，甲圖1月氣溫約為-20℃，乙圖1月氣溫約15℃，則兩地一月平均氣溫大約相差35℃，這說明我國冬季氣溫南北差異大。 （3）從兩幅氣溫曲線圖可以看出，甲圖7月氣溫約為23℃，乙圖7月氣溫約28℃，則兩地七月平均氣溫大約相差5℃，這說明我國夏季南北普遍高溫，溫差小。（4）A圖中最高氣溫為23℃，最低氣溫為-20℃，故其南北溫差為43℃，B圖中最高氣溫為28℃，最低氣溫為15℃，故其南北溫差為13℃。

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