单项选择题
A．how to interpret what people say B．what to do when. you listen to others talking C．how to avoid mistakes when you communicate with people D．why we go wrong with people sometimes
A．we fail to listen carefully when they talk B．people tend to be annoyed when we check what they say C．people usually state one thing but mean another D．we tend to doubt what our friends say
A．The Chinese people have to pay tips in western countries. B．The westerners don' t have to pay high tips in their own country. C．Barbers, hotel bellboys and all sorts of other people can earn a living if they are not tipped. D．Tipping varies from place to place, generally in the area of 20% of your bill.