全球气候变化深刻影响着人类生存和发展，是各国共同面临的重大挑战。某校高三·1班同学围绕“积极应对气候变化”的主题进行研究性学习，搜集到如下资料：
关注全球气候变化大事记
（1）根据上述材料，指出世界各国、联合国、中国是怎样对待全球气候变化问题的
_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
（2）运用《政治生活》知识，分析中国上述做法的合理性
_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
（3）目前发达国家和发展中国家在减排责任和目标等问题上还存在分歧和矛盾。运用政治生活知识，说明世界各国应该怎样切实有效的加强国际合作，共同应对气候变化？
_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
