A、You smile politely when you happen to see someone you know. B、A fake smile never looks quite the same as a real one. C、Flight

admin2014-01-09  22

问题  
Every human being, no matter where they’re from, is born with the ability to smile. A smile is a natural reaction to a positive moment, like a friendly face or a clever joke. Most babies first smile between six and eight weeks old. At first, it is only an expression made when exercising their facial muscles or passing wind. But once they realize a smile gets them a lot of attention huge smiles in return, happy noises, extra treats they learn to try it again. And why wouldn’t they? It takes 43 muscles to frown but only 17 to smile.
    We smile when we are happy. We smile when we see people we know. But what happens when you’re not happy to see someone you know? You smile anyway—you fake a smile. Unfortunately, however, a fake smile never looks quite the same as a real one. In a genuine smile, you not only show your lower teeth, but also move the muscles running all the way around the mouth, which in turn makes the skin around the eyes become tighter and then your smile is real. However, when someone smiles politely, rather than because they really want to, they use the muscle which only raises the sides of the mouth and which does not move the muscles at the corners of the eyes. This kind of fake smile is sometimes referred to as the Pan-Am smile, as it is named after the former airline whose flight attendants welcomed every passenger with the same, forced smile.
Question No. 15 According to the talk, what is a smile?
Question No. 16 What happens in a real smile?
Question No. 17 What do we learn about the Pan-Am smile?
Question No. 18 Which of the following is NOT true, according to the talk?

选项 A、You smile politely when you happen to see someone you know.
B、A fake smile never looks quite the same as a real one.
C、Flight attendants may welcome passengers with the same, forced smile.
D、Every human being is born with the ability to smile.

答案A

解析
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