桂林中学学生会将举行一年一度的英语演讲比赛，本年度的主题为“I have a dream”。假设你是学生会主席李华，将在

Dear boys and girls,
Good afternoon! Welcome to the annual English speech contest! To improve your English speaking and listening ablilities, we hold this English speech contest. It not only offers the chance to practice your English, but also provides a good opportunity to show your graceful self.
There are some important points each contestant should be aware of. First of all, each contestant should dress and behave properly. Second, each should finish the speech within five minutes. Third, each speech should be centered on the theme of our contest, “I have a dream”. I believe your speeches will inspire more people to achieve their dreams.
Finally, I’d like to wish you all good luck and I hope each contestant will perform his best! That’s all. Thank you for your attention!