题目内容：

Three people sat around a table in a restaurant in Brazil. How much do you think each of (A)them tipped（给小费）?

The English man asked, "We usually tip 10 percent, right?" The American woman cried, "Oh, I plan to leave 20 percent!" And the Chinese asked, "What's a tip?"

(B)    it is not a tradition to tip in China, tipping is important in Western countries. When traveling to Western countries, it is common to tip about 10 t0 15 percent of the bill(账单）．

Usually, people give tips to a waiter or waitress when they eat in a restaurant. The US is the NO.1 0n the list of the biggest restaurant tips, with waiters and waitresses expecting to get 10 to 20 percent of the bill.(C) So if you order ＄100 food, it's better to tip your waiter ＄15.

But why is this? Many waiters and waitresses get paid below the US minimum wage(最低工资) and work for tips to make up for that. Hotel cleaners and taxi drivers also work for tips.

Tipping is also popular in some Southeast Asian(亚洲的) countries, such as Indonesia and Thailand. However, in Japan and Korea there is a no- tipping culture and you may probably make the waiter angry if you try to tip him.

1.(A)处“them”指代什么？______________

2.在(B)处填上适当的连词。______________

3.把(C)处划线句子翻译成汉语。______________

4.这篇文章的主题是什么？______________