【正确答案】[参考范文]
Dear teachers and students,
   As we all know, a terrible earthquake happened in Lushan, Sichuan Province on April 20, in which many buildings were destroyed and many people were injured. In order to help the earthquake victims get through the hard times and rebuild their hometown, our school has called on everyone, including both teachers and students, to donate money to the earthquake-stricken area. This donation is voluntary. You can donate at your own decision according to your financial conditions. The money will be collected with the class as a unit. Then, it will be handed to the Red Cross Society of our school. Hope that everyone will be kind enough to do what you can to help our fellowmen out of the difficulty. Thank you.