你叫李平，是英语系学生会主席。写一封信给王教授，请他做一个有关中国历史的报告。注意信中要包括目的、时间、日期和地点。

　　Ⅴ.Writing

　　May 19,2002

　　Dear Professor Wang：

　　On behalf of the Student Union of the English Department,I am writing to invite you to give a lecture on Chinese history.

　　We have planned to have such a lecture at 2:30 p. m. in Lecture Hall 419,on May 25.

　　Looking forward to your lecture. Inform us in advance if you can not come.

　　Sincerely yours,

　　                                                                                                                                                                                                                     Li Ping