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当前学科:环保基础知识竞赛
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1979年在瑞士日内瓦召开的第一次世界气候大会上,科学家提出了大气中()浓度增加将导致地球升温的警告,气候变化首次作为一个受到国际社会关注的问题提上议事日程。
A . A、二氧化碳;
B . B、甲烷;
C . C、水蒸气;
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