Like international travelers anywhere，foreigners visiting the United States from other countries can be confused by some of what they encounter．Fortunately，their fellow travelers have plenty of advice．Here are some specially good travel advice from around the world．
From Italy：
Tipping is filled with misunderstanding．Q．Is it true that I have to"force"to tip at all？A．It is not mandatory to tip，however，it is strongly recommended，because in many cases it is the only entry of workers．Generally in a restaurant，in the cab，and in many places where there is a service tip is 15%．Since the bill that will explain you exactly the city tax of 8.875%，is sufficient to double that sum，without bothering to do the calculations．In the hotel you leave two dollars per day per person cleaning．Obviously you do not leave tips in places like McDonalds or Starbucks．
From China：
Americans love to follow rules，even when no one is looking．"Americans are such strict rule followers．I witnessed this once sitting on the sidelines of a high school dodge ball game．To me，it was ridiculous，a little violent，and very American．It struck me that my classmates followed the rules of the game so strictly．Even when no one noticed that a person had been hit and he could have kept playing，he voluntarily gave himself up and left the game．I was deeply impressed by how much people honored the rules even when they are not seen．"
From Russia：
Gifts are not a big deal．And did you know bribery （行贿） was illegal？"Gifts：Americans do not expect them．On the contrary，an unexpected gift while conducting business can put an American in an awkward position．Such things for Americans suggest exchange of commercial．
Business gifts in the U．S．are not acceptable．Moreover，they often cause suspicion．Americans fear that they could be interpreted as a bribe，and in the United States that is strictly punishable by law．"
From Japan：
Nobody is impressed by how much you can drink．"In the U．S．，they do not have a sense of pride if they drink a large amount．Rather，if you drink a lot，there is a sense that you cannot manage yourself，and you can lose respect from those around you．Being drunk doesn't excuse your actions，and to drink alcohol habitually is a sign of alcoholism．Alcoholics are seen as mentally weak，and are avoided by society due to their inability to have self control．"
46．What does the passage mainly tell about？
A．Cultural diversity．
B．Cultural differences．
C．Cultural revolution．
D．Cultural construction．
47．Which is closest in meaning to the underlined word"mandatory"in Para.3？
A．Required．
B．Forbidden．
C．Permitted．
D．Arranged．
48．According to the passage，what are Americans most likely to do？
A．Tipping everywhere．
B．Sending a surprising business present．
C．Drinking a lot．
D．Obeying the game rules．
49．Which word do the international travelers probably use to describe Americans？
A．Confident．
B．Self﹣disciplined．
C．Selfless．
D．Generous．