假定你是李华，请你代表英语俱乐部给医学专家 Alex发一封邮件，邀请他来你校进行传染病防治知识的讲座。内容包括：

假定你是李华，请你代表英语俱乐部给医学专家 Alex发一封邮件，邀请他来你校进行传染病防治知识的讲座。内容包括：

1. 讲座内容；
2. 时间和地点；
3. 表达期望。

注意：
1.词数80左右；
2.可以适当增加细节，以使行文连贯。
______________________________
参考范文：
Dear Alex,
   On behalf of the English Club of No 1 senior high school, I’m honored to invite you to deliver a speech about infectious disease and how we can protect ourselves if we may.
   As we all know, everyone has been affected by the new virus. So our school intends to make us know more about prevention and treatment of infectious diseases. The lecture will be held at school hall on September 4, next Friday morning from 10 to 12. All the teachers and students will attend. You’re famous expert in this field and live in China for many years. We hold a strong belief that we can learn more medical knowledge from you with your presence.
   Look forward to your early reply. Thank you!
 
                                                        Yours,
                                                        Li hua