If you travel around the world, you will be surprised to find that foreign customs can be different from your own. A visitor to India would do well to remember that people there( 1)it impolite to use the left hand( 2)passing food at table. The left hand is supposed to be used for washing yourself. Also in India, you might(3)a man shaking his head at another and think that he is disagreeing, But in many( 4)of India a shake of the head is a sim( 5)shows agreement or acceptance. Nodding your head when you are offered a( 6)in Bulgaria is likely to leave you thirsty. In that country you shake your head to indicate"yes"—a nod indicates "no". The Arabs are( 7)for their hospitality(好客). At a meal in Arab countries, you will( 8)that any drinking vessel is filled again and again as son as you drain(喝光)i. The way( 9)that you have had enough is to take the cup or glass in your hand and give it a little shake from side to side or place your hand (10) the top. In Europe it is quite usual to (11) your legs when siting talking to someone, even at an important meeting.Doing this when meeting an important person in Thailand, however, could( 12) him or her unhappy. It is considered so informal an attitude for such an occasion. Also when in Thailand you are not supposed to touch the head of an adult—it's just not done. In Japan, it is quite usual for (13 )to plan evening entertainment for themselves and leave their wives at home. In Europe such attitudes are disappearing. Customs vary from country to( 14) .Visitor may be at a loss as to what to do in a foreign environment.(15 )such circumstances, the rule is: When in Rome, do as the Romans do.