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【题目】2001年11月,太平洋上美丽的岛国﹣﹣图瓦卢领导人在一份声明中说,.他们对抗海平面上升的努力已告失败,并宣布他们将放弃自己的家园,举国移民新西兰.图瓦卢成为全球第一个“环境难民”国家的主要原因是(  )
A.近年来全球降水增多
B.二氧化碳排放增多使全球变暖
C.人为地破坏海洋环境
D.图瓦卢人口增长迅速

【答案】B
【解析】全球变暖是由多种原因造成的,其中人类活动排放的温室气体过多造成大气的保温功能增强是一个不可忽视的原因. 图瓦卢成为全球第一个“环境难民”国家的主要原因是二氧化碳排放增多使地球不断变暖,两极的冰川融化,海平面上升造成.故选项B符合题意.故选:B.

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