【題目】當(dāng)黑龍江省還是冰天雪地時，海南島卻鮮花盛開了，這是因為

A. 緯度跨度大 B. 經(jīng)度跨度大 C. 海陸差異大 D. 垂直差異大

【答案】A

【解析】影響氣候的因素主要有緯度因素、地形地勢因素、海陸因素、洋流因素和人類活動等。我國領(lǐng)土南北跨緯度很廣，我國疆域遼闊最北端在漠河以北黑龍江主航道中心（53°N）；最南端在曾母暗沙（4°N），南北跨緯度約50度，因此氣溫差異較大，故本題選A。

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