【答案解析】[参考范文]
An Announcement
Jan. 9, 2013
The Conference on an international trade fair, from March 8th to 15th, will be held at Guangzhou. It is badly in need of volunteers to assist the fair sponsor in organizing the relevant affairs, including reception, distribution of documents, technical support and so on.
Students who have previous experience as volunteers are preferred. Basic knowledge in computer, fluent oral English and an amicable personality are some of the qualifies we desire. Volunteers shall be available for at least 7 days without absence during the conference.
If you are interested and willing to have a whole new experience, please do not hesitate to send your resume to liming @ hotmail, com before Jan. 20th. Your applications are welcome.
Students" Union
[解析] 确定题型：告示
确定主题：面向所有学生写一则招收志愿者的告示，并列清相关条件和信息。