2. 外语
  3. Everybody loathes it, but everybody does it. A recent poll showed that 40% of Americans【C1】______the practice. In America alone,

Everybody loathes it, but everybody does it. A recent poll showed that 40% of Americans【C1】______the practice. In America alone,

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问题     Everybody loathes it, but everybody does it. A recent poll showed that 40% of Americans【C1】______the practice. In America alone, tipping is now a $16 billion-a-year industry. Tips should not exist. So why do they? The conventional wisdom is that tips both【C2】______the efforts of good service and reduce uncomfortable feelings of inequality. The better the service, the bigger the tip.
    But according to new research from Cornell University, tipping no longer serves any useful function. The paper analyses data from 2,547 groups dining at 20 different restaurants. The correlation between larger tips and better service was very【C3】______: only a tiny part of the variability in the size of the tip had anything to do with the quality of service. Customers who rated a meal as "excellent" still tipped anywhere between 8% and 37% of the meal price.
    Tipping is better explained by culture than by economics. In America, the custom has become institutionalized: it is regarded as part of the【C4】______cost of a service. In a New York restaurant, failing to tip at least 15% could well mean【C5】______from the waiter. Hairdressers can expect to get 15-20%, the man who delivers your groceries $2. In Europe, tipping is less common; in many restaurants, discretionary tipping is being【C6】______by a standard service charge. In many Asian countries, tipping has【C7】______really caught on at all.
    How to【C8】______for these national differences? Look no further than psychology. According to Michael Lynn, the Cornell paper’ s co-author, countries in which people are more extrovert, sociable or neurotic tend to tip more. Tipping relieves anxiety about being served by strangers. And, says Mr. Lynn, "in America, where people are【C9】______and expressive, tipping is about social approval. If you tip badly, people think less of you. Tipping well is a chance to show off. " Icelanders, by contrast, do not usually tip—a measure of their【C10】______, no doubt.
A)reward B)extroversion C)additional D)weak
E)replaced F)ever G)abuse H)account
I)introversion J)never K)accepted L)torture
M)outgoing N)hate O)vague
【C3】
选项
答案D
解析 从语法可知，此处缺形容词。再分析句意“较多的小费和良好的服务之间的关系是非常 ：小费数量的差异中只有很小一部分与服务质量有关”。可知小费收得高和服务得好没有必然的关系，选项中weak“微弱的，不充分的”符合句意，排除vague“模糊的”。
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