阅读理解
Many scientists think that the earth is getting warmer and warmer．If the change continues, the natural world and human society will face danger．Scientists believe human activity is responsible for the climate change．We produce too many greenhouse gases．They keep heat in the air and make the earth warm．
Many of the world's governments agree．And they want to solve the problem．So from December 7 to 18, 2009, they held a conference in Copenhagen, Denmark to talk about global warming and climate change．
Representatives(代表)from 192 countries and regions went to the meeting．Although they have not reached an agreement, the Copenhagen Accord(《哥本哈根协议》)was an important beginning to save the earth．It was made by a small group of countries including China, the US, India, Brazil and South Africa．Some other countries at the conference also showed support．
What are the key points of the Copenhagen Accord?The accord limits global temperature increases to 20C by 2050 compared to pre-1850．Scientists think it could help the world to avoid serious climate change．
The accord also says that developed countries must promise to cut greenhouse gas emissions(排放)to the UN by January 31, 2010．The accord asks developed countries to give money to help developing countries．
Many countries and organizations are disappointed that the conference didn't reach a legal document(法律约定)．And they think the accord is not clear enough about its goals．
African leaders are worried that the goal of a 20C global temperature increase isn't good enough, because it will mean a much higher increase in temperature across Africa．This could cause big problems like food and water shortages across the continent．
Still, UN Secretary General Ban Ki-Moon believes the conference was an“improvement”．
