If you travel around the world, you will be surprised to find that foreign customs can be different 1 your own. A visitor to India would do well to remember that people there 2 it impolite to use the left hand 3 passing food at table. The left hand is supposed to be 4 for washing yourself. Also in India, you might 5 a man apparently shaking his head at another and 6 that he is disagreeing. But in many 7 of India a shake of the head is a 8 that shows agreement or acceptance. Nodding your head when you are offered a 9 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 10 for their hospitality(好客). At a meal in the Arabic countries, you will 11 that any drinking vessel(器皿) is filled again 12 again as soon as you drain it. The way to 13 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 14 the top. In Europe it is quite usual to 15 your legs when sitting talking to someone, even at an important meeting. Doing this when meeting an important person in Thailand, however, could 16 him or her unhappy. It is considered too informal an attitude for such 17 occasion. Also when in Thailand you are 18 supposed to touch the head of an adult----it’s just not done. In Japan, it is quite usual for 19 to plan evening entertainment for themselves and leave their wives at home. In Europe such attitudes are disappearing. Customs vary from country to 20 . Visitors ma be at a loss as to what to do in a foreign environment. In such circumstances, the rule is: When in Rome, do as the Romans do.