题目内容

【题目】我国第5个南极科考站一罗斯海新站于2018年正式奠基,建成后将为多领域料提供保障条件。据此完成下面小题。

1关于南极地区自然环境特征的描述,正确的是

A.温暖湿润B.严寒大风C.植被茂盛D.矿产贫乏

2罗斯海新站建设的最佳时间是

A.3-5月B.6-8月C.9-11月D.11-次年3月

3罗斯海新站建设过程中,下列行为合理的是

A.生活垃圾分类回收B.大量开采矿产资源

C.捕杀极地野生动物D.随意堆放建筑材料

【答案】

1B

2D

3A

【解析】

本题主要考查极地地区的自然环境特征与科学考察。

1全洲年平均气温为-25OC,内陆高原平均气温为-56 OC左右,为世界最冷的陆地,所以A错误;全洲平均风速178米/秒,沿岸地面风速常达45米/秒,最大风速可达75米/秒以上,是世界上风力最强和最多风的地区,被称为“风库”,所以B正确;由于气候严寒,没有植物生长的条件,所以C错误; 南极地区的矿产资源极为丰富。据已查明的资源分布来看,煤、铁和石油的储量为世界第一,所以D错误。故选B

2每年的11到次年3月为南极地区的暖季,又是极昼时期,便于科考队员考察,因此罗斯海新站建设的最佳时间是11-次年3月,所以ABC错误,D正确。故选D

3为了保护南极地区的环境,在南极进行科学考察时生活垃圾分类回收,所以A正确;由于极地环境是原始的自然环境,比较脆弱,大量开采矿产资源、捕杀极地野生动物、随意堆放建筑材料,都会给当地环境造成毁灭性的破坏,所以BCD错误。故选A

南极地区位于地球的最南端,南极大陆95%以上的面积为厚度极高的冰雪所覆盖,素有“白色大陆”之称,平均海拔为2350米,是世界上最高的大陆。南极洲蕴藏的矿物有220余种。。南极地区气候酷寒、大风和干燥,自然环境恶劣,它至今仍然没有常住居民。

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