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【题目】地球的南北两极,是地球上至今未被开发、未被污染的洁净地方,那里蕴藏着无数的科学之谜和信息,是科学研究和实验的圣地,是与全球环境变化、经济可持续发展,人类的生存和命运休戚相关的最后疆土.我国先后在南极地区建立了长城站、中山站和昆仑站三个极地科学考察站,建站时间一般选在2月份,其原因是此时(  )

A. 风力较小 B. 是冬季,便于极地考察 C. 降水较多 D. 气温较高,白昼时间较长

【答案】D

【解析】

根据南极地区的自然环境,进行分析解答。

极地地区气候恶劣,考察时间(或建站时间)应选择当地的暖季。南北半球季节相反,到南极地区考察,应选择11到次年3月,即我国的冬季,此时段南极地区为暖季,气温较高,且有极昼现象,便于进行科学考查。故选:D。

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