问题补充：
Around the world, people have different ideas about what good manners are.
When you go to restaurants in different parts of the world, it’s 46to know the right and wrong things to do. For example, in China it’s OK to 47a lot of noise in a restaurant. In fact, if a restaurant isn’t 48or lively, you may think there’s something wrong with it. However, in many western countries, restaurants are quiet places. If a table is too loud, other people who are eating there might even 49to the owner of the restaurant.
Paying the bill 50also different from country to country. In China, one person usually pays 51everybody. In western countries, one person pays if he or she is entertaining clients(宴请宾客), but 52friends eat together, they usually share the cost. This is called “Going Dutch（均摊费用）”.Also, when westerners pay the bill, they usually leave some money for the 53.This is called “leaving a tip(小费)”. Leaving a tip is thought to be polite. In the US, it’s 54to leave tips of 10％,15％,or 20％ of the bill, which is decided by how good the service is. Good waiters can make a lot of money!
The way people eat food is different in the world, but you can 55the same kind of food in many countries. Chinese and Italian food, for example, are popular all over the world.
【小题1】A. popularB. difficultC. important
【小题2】A. causeB. keep C. make
【小题3】A. noisyB. noiseC. lucky
【小题4】A. shout B. explainC. complain
【小题5】A. areB. isC. be
【小题6】A. onB. forC. in
【小题7】A. until B. whenC. unless
【小题8】A. gatekeeper B. sellerC. waiter
【小题9】A. terrible B. common C. serious
【小题10】A. invent B. findC. preferC
答案：
(答案→)C
解析：
【小题1】C it is important to do sth. 做某事有重要。知道做正确的或错误的事情是很重要 的。
【小题1】C make noise 固定搭配，发出噪声之意。在中国，饭店里吵闹是没关系的。
【小题1】 A noisy吵闹的。事实上，如果饭店里不吵闹或活跃，你也许认为有什么问题。
【小题1】C complain to向……抱怨。如果一桌声音太大，在那吃饭的其他人甚至会向店主抱怨。
【小题1】B动名词作主语，谓语动词用单数。不同的国家付账单也不同。
【小题1】B pay for付钱给……。在中国，一个人通常付所有人的钱。
【小题1】B when当……时候。但当朋友一起吃饭的时候，他们通常分担费用。
【小题1】C waiter服务员。当西方人付账单时，通常要付小费给服务员。
【小题1】B common通常。在美国，通常付账单的10％,15％,或20％。
【小题1】B find发现。但你能发现在许多国家有相同的食物。
