Different countries have different cultures.A same gesture may havedistinct meanings indifferent countries.For instance，in Africa，people knock at the table withtheir fingers to call waiters which is considered as impolite in China.In western countries.if you make a circlewith your thumb and the index finger(食指)，and then raise the other three fingers.youare suggesting “OK”.The same gesture，however，means “money” in Japan while makesBrazilian people feel insulted(受侮辱的).With that in mind，you’d better learn abouttheir custom before travelling to foreign countries. Greeting is an important part ofcommunication between people.When greeting someone，Americans tend to holdout their hands and look directly into his/her eyes andthen smile.However.sometimessuch behavior might bring nothing but misunderstanding in other countries.A handshake might not be accepted and looking others right in theeye Can have different meanings. Asian people regard physical contact asembarrassin9;therefore，they do not shake hands.They have their ownways of greeting people.For Japanese，a slight bow of the head is enough.In Korea，women do not shake hands or hug with people;whilemen might shake hands accompanied by nodding the head once.In western Asia，Muslims do not make bodycontacts with women yet hug is generally accepted among men.Same thing happens on eye contact.In manycountries，people avoid direct eye contact to showrespect.This can cause misunderstanding，too.In fact. students have been regarded as lacking respectfor their American teachers exactly because they failed to make eye contactswith their teachers. Though different cultures seem to havedifferent ways of greeting.smiling is taken as the universal gesture of friendliness.Smiling indicates happiness or agreement(同意)andit can also be used to mean “Excuse me ”or “Please”.Sowhen you are not sure what to do，just smile. What will be regarded asimpolite __________.