第二节： 书面表达 （总分15分）
世界自然基金会倡导的“地球一小时”（Earth Hour）活动于2009年正式在中国启动。
请根据下列提示介绍一下这一活动。
背景：全球的发展给环境带来了巨大破坏，现在应该采取措施来改善环境了；
提出者：世界自然基金会 World Wide Fund for Nature(WWF)
内容：它是应对全球气候变化而提出的一项倡议，鼓励人们在特定的时间熄灯一小时；
目标：希望世界上越来越多的人节约能源，保护环境。
注意：1. 词数100左右；2. 可以适当增加细节，以使行文连贯.
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One possible version：
The world has been developed at the expense of our environment. It’s high time for us to take action to ruduce the damage; otherwise, we’ll lose our future forever.
Earth Hour is a program put forward by the World Wide Fund for Nature(WWF) to improve the current situation.It clearly shows concern about global warming and climate change. In this activity people around the world are encouraged to switch off their lights for 60 minutes at a particular time to support Earth Hour. It aims to call for more people to save energy and protect environment. I’m sure that with joint efforts our earth will be as beautiful as it once was.