Hi,ladies and gentlemen,today my topic is"Smile to the world". Smile is very simple,everyone can to it,but do you really know what is that stands for.I guess no one can possibly give me the right answer.It represent a power,a future and a courtesy. There is a saying"smile to the world,then the world will samile at you,too."This means the world is just what you think it is.There is just a line between you and the real world,this line is just smile.Come on my friend do your best,smile at the world,It can make your outlook brighter.Thank. 这是我即兴编的，希望你能喜欢。有什么不足的，联系我。