You are going to organize an academic exchange conference On 6-7 January 2005 in Vancouver, Canada. Please write a letter in the name of the Chairman of Organizing Committee of the Conference to invite Professor Qian to attend the conference. In your letter, you need to
1. provide the background information
2. introduce the proposed programs
3. tell him/her what you need him/her to do
【参考答案】
October 24, 2004 Dear Professor Qian, I am pleased to inform......