【題目】南極是世界上最冷的地方，常年平均氣溫是-25℃，一天企鵝媽媽與小企鵝之間發(fā)生了一次有趣的對話，它們的部分說法如下，其中正確的是（ ）

A. 小企鵝：媽媽，這么冷，我都沒溫度了。

B. 企鵝媽媽：不對，是沒有內(nèi)能。

C. 小企鵝：冰天雪地的，可能連水蒸氣都沒有吧。

D. 企鵝媽媽：呵呵，水蒸氣倒肯定有，因為冰是可以升華的呀。

【答案】D

【解析】

試題分析： A.不能說沒溫度了，溫度雖然低，但是也有溫度，A錯；B. 一切物體都有內(nèi)能，溫度低也有，“沒有內(nèi)能”是不對的；C. 水蒸氣可能有，固體冰也可能升華成水蒸氣，C錯；D. 企鵝媽媽：呵呵，水蒸氣倒肯定有，因為冰是可以升華的呀，D正確。選D。

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