【題目】當北國江城的鋼花映紅了飛雪,江南的田野正是春色妖嬈這兩句歌詞反映了我國南北方(

A. 緯度差異大 B. 經(jīng)度差異大 C. 氣溫年較差大 D. 年降水差異大

【答案】A

【解析】試題分析: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.另外,我國北方地區(qū)鄰近冬季風的源地,寒冷的冬季風加劇了我國北方的嚴寒.所以我國南北溫差大。因此,我國黑龍江省北部大地白雪皚皚;而海南省冬季平均氣氣候暖熱,到處綠樹成陰,故選A。

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