综合类：阅读理解Tipping
In any countries there is a fixed charge for personal services. A certain percentage may be added to the hill at a hotel or restaurant "for the service". In other places the customer may be expected to give a tip， or a small amount of money， as a sign of appreciation whenever services are performed. In the United States there is no consistent practice in regard to tipping. The custom is more common in a large city than in a small town. A native American may often be in doubt about when and how much to tip when he is in a city that is strange to him. In general， however， a tip is expected by the porter who carries your baggage， by taxi drivers ， and by those who serve you in hotels and restaurants.
1. According to the passage， the practice of giving tips
A） is consistent throughout the world.
B） varies from place to place in the USA
C） is consistent in large towns in the USA.
D） is consistent in small towns in the USA.
2. According to the passage， the following are the people one may tip except
A） porters.
B） taxi drivers.
C） waiters.
D） cleaners.
3. According to the passage， which of the following is incorrect？
A） "Extra" is a fixed charge in some cities.
B） "Extra" is similar to a tip in some cases.
C） If the "extra" is paid， one doesn‘t tip and more.
D） Some hotels require people to pay a service charge
。4. According to the passage， the amount of money for a tip
A） is the same across restaurants and hotels.
B） depends on how much one pays for his meal.
C） generally varies according to the size of one‘s bag in hotel.
D） is usually small for a cup of coffee at a lunch counter.
5. From the passage we learn that
A） Americans sometimes are not sure how to tip.
B） people in large towns know more about tipping.
C） one has to tip no matter how big or small the order is.
D） people sometimes don‘t tip when they are not satisfied.
KEYS：BDCBA