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第一篇：优秀英语演讲稿
how many people here in this room smile more than 20 times per day? raise your hand if you do. oh, wow. outside of this room, more than a third of us smile more than 20 times per day, whereas less than 14 percent of us smile less than five.
in fact, those with the most amazing superpowers are actually children who smile as many as 400 times per day.have you ever wondered why being around children who smile so frequently makes you smile very often? a recent study at uppsala university in sweden found that its very difficult to frown when looking at someone who smiles.
you ask, why? because smiling is evolutionarily contagious, and it suppresses the control we usually have on our facial muscles. mimicking a smile and experiencing it physically help us understand whether our smile is fake or real, so we can understand the emotional state of the smiler.
第二篇：英文演讲稿
Learn How to Say No.
Weve all been taught that we should help people. It is the right thing to do and will make us popular with others. It may even win us favors in return. However, we must be realistic. We cant say yes to every request. If we did, we would fail or go crazy for sure. Sometimes we simply dont have the time to help. In this case, we must know how to say no politely.
When we need to say no, here is one method we can try. First, we should tell the truth. If we really cant do something, we should just say so. Second, we should remember to refuse requests politely. We must communicate clearly, but must also be sincere and sympathetic. A true friend will understand. Finally, we must not feel guilty about saying no. Sometimes refusing others is the right thing to do. It can save ourselves, and them, a lot of trouble. In short, we cannot please everyone all the time. Refusing favors is a part of life.