2015-2016学年北师大版 选修八 unit 22 Environmental ProtecionLesson 1 Global Warming B课件 (22)
2015-2016学年北师大版 选修八 unit 22 Environmental ProtecionLesson 1 Global Warming B课件 (22)第4页

World leaders including U.S. President Barack Obama, Chinese Premier Wen Jiabao, address the general assembly(委员大会) of the United Nations Climate Change Conference 2009 in Copenhagen December 16-18, 2009. World leaders worked through the early hours to try and beat a Friday deadline for a deal on cutting emissions and helping poor countries cope with (对付) the costly impact of global warming.