学生表现力强，口语流畅，逻辑清晰，并且能够与自己的专业相结合，对相关话题进行展开论述，采用多种方式，类比、举例、论证等。

ok, now we are going to have our presentation. in this session, i will invite 5-6 studnets to come up here, and to tell the class some new and interesting things around you. now the first one, will be      . before we start, i would like to introduce our timer. **is our timer. when your speech is beyond 2 minutes, you will see the signal over there. 

ok, for the final five minutes, i am going to ask you think about the most impressive , the most memorable interesting speech you have heard today. i am going to just ask randomly someone to tell me which speech do you think is most impressve for you. since the speakers have given the speech, so i will ask some one who havn't given the speech, they have been the listeners.