下面来自哥本哈根的一则报道：

COPENHAGEN：No matter what the outcome of the UN climate change conference is, China will remain committed（尽…义务）to achieving the emission reduction targets（减排目标）it has said for itself, Premier Wen Jiabao said on Friday．

“We will honor our word with real action，”Wen told 119 heads of state and government attending the UN climate change conference，or COP 15．

Before the conference began，China announced that it would reduce its carbon intensity emission by 40 and 45 percent by 2020．

Wen then met US President Barack Obama for nearly an hour in what a White House official described as a“step forward”．“But Obama refused to commit to new emission cuts, a move that many said could have saved the struggling climate talks．

假如你叫李华，在看完这则报道后用英语给出席“哥本哈根联合国世界气候变化大会”（Copenhagen）The 15th United Nations Climate Change Conference，or COP 15的各国首脑写封信，代表中国的中学生陈述你们对世界环境问题的关注和对本次大会的期待。文章应包括以下要点的内容，不必逐字翻译，字数在120左右．

1．经济发展决不能以牺牲环境为代价，降低排放，减少温室效应（green house effect）是本世纪人类面对的最大挑战．（challenge）

2．几十年来，中国政府在改善环境方面的努力有目共睹，本次大会，中国提出了最高的减排目标，起了带头作用．

3．自己亲身体验到了学校周边自然环境的变化．

4．发达国家应当有勇气承担更多的责任

5．作为未来的主人，真诚希望各国的领导人立即行动起来，共同合作，不要把问题留给下一代人．

开头已写出：

Dear Sirs／madams，

As Chinese teenagers，we are most concerned about the opening of COP 15 in Copenhagen