假设你在2009年3月28日参加了地球一小时（Earth Hour）活动,请你在校园网的BBS论坛里用英语介绍这一活动并发表感想。
［写作内容］
根据下表内容写一篇短文。
名称
地球一小时（Earth Hour）
时间
每年三月最后一个星期六，当地时间8:30—9:30
形式
熄灯一小时
目的
提高环保意识，应对气候变化
发展
2007年始于悉尼，之后迅速发展
2009年约90个国家4000多个城市10亿人参与
感想
。。。。。。。
［写作要求］
1．只能使用5个句子表达全部内容；
2．文中不能出现真实姓名和学校名称；Earth Hour, an annual international event held on the last Saturday of March, calls on people to turn off their lights from 8:30 to 9:30 pm of the local time. Its purpose is to raise people’s awareness of the environmental protection and the climate change. Earth Hour first began in Sydney in 2007 and after that, it spread across the world at an amazing speed. This year more than 4,000 cities from 90 countries and some one billion people from around the world have joined Earth Hour. Though it is a single mass event, people are contributing their own way to saving our planet and one hour’s dark means a bright future.
网友回答
(答案→)Earth Hour, an annual international event held on the last Saturday of March, calls on people to turn off their lights from 8:30 to 9:30 pm of the local time. Its purpose is to raise people’s awareness of the environmental protection and the climate change. Earth Hour first began in Sydney in 2007 and after that, it spread across the world at an amazing speed. This year more than 4,000 cities from 90 countries and some one billion people from around the world have joined Earth Hour. Though it is a single mass event, people are contributing their own way to saving our planet and one hour’s dark means a bright future.
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