第四节基础写作（15分）【写作情景】为配合2009联合国气候变化大会，你校请来了中山大学李教授为同学们做讲座。假设你是《学生双语报》通讯员，请用英文写一则通讯稿报道这场讲座的情况。

第四节基础写作（15分）
【写作情景】
为配合2009联合国气候变化大会，你校请来了中山大学李教授为同学们做讲座。假设你是《学生双语报》通讯员，请用英文写一则通讯稿报道这场讲座的情况。
【写作内容】
1. 讲座的主要内容：
毫无疑问，地球在变暖，这正是人类活动引起的；
看起来一些自然灾害，如严重的风暴、旱涝、疫病和物种消亡应归咎于全球变暖；
同时，近年来世界许多地区的冬天气温趋于上升，其中大气污染是导致这一结果的主要原因；
除非我们净化环境，否则人类可能无法生存。
2. 讲座的效果 ……
【写作要求】
使用五个句子表达全部内容；
开头已给出，不计入句子数。
【评分标准】
句子结构准确，信息内容完整，篇章结构连贯。
To express support for the UN Climate Change Conference in Copenhagen, our school held a lecture given by Professor Li from Zhongshan University. Professor Li presented us with wonderful pictures and graphs to clarify global warming. Here are the main points of the lecture.
    according to Professor Li ，there’s no doubt that the earth is being warmer and it is human activity that has caused it。It seems that global warming could be to blame for some natural disasters such as severe storms ，floods ，droughts ，the spread of diseases and the disappearance of species 。meanwhile，the winter temperature in many regions in the world tends to go up for the recent years，and one of the main reasons which have resulted in this consequence is the air pollution。Unless we clear up our environment ，human beings may not survive 。Professor Li’s presentation was warmly received and the lecture was a success on the whole 。