【題目】春節(jié)期間，哈爾濱冰天雪地，而廣州卻花團錦簇，這說明我國冬季氣溫的分布特點是（　）

A. 南北溫差不大 B. 南北溫差很大 C. 南北普遍高溫 D. 南北普遍低溫

【答案】B

【解析】

我國地域遼闊，地跨眾多的溫度帶和干濕地區(qū)，加上我國地形復(fù)雜，地勢高低懸殊，更增加了我國氣候的復(fù)雜多樣性．我國冬季南北氣溫差異大，南方溫暖，而越往北氣溫就越低．夏季南北普遍高溫。

我國位于北半球，南北跨將近50個緯度。在冬季，太陽直射在南半球，對北半球來說，緯度越高，正午太陽高度角越低。我國北方地區(qū)正午太陽高度角比南方低，白晝短，得到太陽的光熱少。造成春節(jié)期間，廣州已是繁花似錦，春意盎然，但小明到達北京后，發(fā)現(xiàn)這里仍是千里冰封，萬里雪飄。故選B。

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