结束语：
-once again i would like to thank you for the opportunity of talking to you on the subject. i hope you will give me your comments and suggestions. that will help me improve my work. -thank you for your attention. if there are any points that i didn’t make clearly, please point them out and i would like to give further explanations.
4. 佟诚德
开场白：
-good morning everybody. it is really an honor for me to give a report here. in the next ten minutes, i will focus on the following three aspects. first, … . then, … . at last, … .
-i’m very pleased to be here to share my ideas with all of you. it is a great opportunity and challenge as i have only 5 minutes for presentation. so i can only give a brief introduction to my work and questions at the end are welcomed…
-hello, everyone. my topic today is … and i shall address myself to the following contents… 结束语：
-that’s all for my presentation. thanks for listening. thank you all.
-well, i think we are running short of time and my presentation should be over. thank you for your attention.
5. 焦炎
开场白：
- mr. president, ladies, and gentlemen:
i never suspected that i was to have so great an honor, so carefully given, as to become a follower of the distinguished speaker who has just taken his seat.
- mr. president and gentlemen:
i am obliged to my friend dr. clarke for the complimentary terms in which he has presented me to you. but i must appeal to your commiseration. harvard and yale! can any undergraduate of either institution, can any recent graduate of either institution, imagine a man responding to that toast? however, i must make the best of the position, and speak of some points upon which the two institutions are clearly agreed. and here i am reminded of a story of a certain new england farmer, who said that he and ‘squire jones had more cows between them than all the rest of the village; and his brag