[单项选择]

Everybody loathes it, but everybody does it. A recent poll showed that 40% of Americans hate the practice. It seems so arbitrary, after all. Why does a barman get a tip, but not a doctor who saves lives
In America alone, tipping is now a ＄16 billion-a-year industry. Consumers acting rationally ought not to pay more than they have to for a given service. Tips should not exist. So why do they The conventional wisdom is that tips both reward the efforts of good service and reduce uncomfortable feelings of inequality. The better the service, the bigger the tip.
Such explanations no doubt explain the purported origin of tipping—in the 16th century, boxes in English taverns carried the phrase "To Insure Promptitude" (later just "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 l
A. tipping is very popular in European countries.
B. in Asian countries tipping never existed.
C. tipping is more popular in America than in Europe.
D. tipping is popular in America because the Americans are much richer.

[单项选择]

Everybody loathes it, but everybody does it. A recent poll showed that 40% of Americans hate the practice. It seems so arbitrary, after all. Why does a barman get a tip, but not a doctor who saves lives
In America alone, tipping is now a ＄16 billion-a-year industry. Consumers acting rationally ought not to pay more than they have to for a given service. Tips should not exist. So why do they The conventional wisdom is that tips both reward the efforts of good service and reduce uncomfortable feelings of inequality. The better the service, the bigger the tip.
Such explanations no doubt explain the purported origin of tipping—in the 16th century, boxes in English taverns carried the phrase "To Insure Promptitude" (later just "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 l
A. It originated from the English inn service.
B. The original purpose of tip was to ensure that waiter could get more money.
C. The waiter threatened the customers with bad service if no tips were given.
D. It originated in a small English village.

[单项选择]有如下函数调用语句：
func(rec1, rec2+rec3, (rec4, rec5));
该函数调用语句中，含有的实参个数是______。
A. 3
B. 4
C. 5
D. 有语法错

[单项选择]有如下函数调用语句 func(rec1,rec2 +rec3,(rec4,rec5)); 该函数调用语句中，含有的实参个数是______。
A. 3
B. 4
C. 5
D. 有语法错误

[单项选择]有如下函数调用语句
func(rec1,rec2+rec3,(rec4,rec5))；
该函数调用语句中，含有的实参个数是______。
A. 3
B. 4
C. 5
D. 有语法错误

[单项选择]American universities prefer to have letter of recommendation sent directly from the people who write them．


A. 美国的大学更喜欢有意见的人直接给他们寄建议信。
B. 美国的大学更喜欢推荐人直接给他们寄推荐信。
C. 美国的大学更喜欢推荐人亲自对他们做出推荐。
D. 美国的大学更喜欢有意见的人亲自对他们提出。

[单项选择]Why do researchers expose newborns to filtered recordings in their study


A. Because listening to filtered sounds is like listening to a stereo next door.
B. Because filtered sounds resemble the sounds babies hear in the womb.
C. Because filtering removes the crisp, clear frequencies from the sounds.
D. Because filtering keeps such features of sounds as rhythm, melody, pitch, and intonation.

[多项选择]An American professor has prepared a letter of recommendation for his student, and his student is expected to say “______”. ( )
A. Thank you very much
B. I feel so sorry that it has taken you so much time
C. I feel so sorry that it has caused you so much trouble
D. I really appreciate your help

[单项选择]Why does the writer think rope skipping also does good to one's eyes

[单项选择]Discovering consists of seeing what everybody has seen and（）what nobody has thought.
A. think
B. thinking
C. thought
D. to think

[单项选择]Entertainment has been made available to everybody by the cinema, radio and television.
A. 影院、收音机和电视使人人都可以享受各种娱乐。
B. 影院、收音机和电视是每个人的主要娱乐方式。
C. 影院、收音机和电视使娱乐成为每个人的可能。
D. 影院、收音机和电视是每个人能够得到的娱乐。

[单项选择]Everybody including the White Brothers to have a holiday there.
A. wants
B. want
C. will want
D. do want

[单项选择]Which of the following waste is best suited to recycling


A. Empty milk cartons.
B. Textiles.
C. Potato peelings.
D. Cabbage stalks.

[单项选择]Talking about the training she has received, a recently employed graduate has the view that ______.


A. it is still well-received by all the staff members today
B. it is valuable to the employers and the employees
C. it is helpful for attracting young employees
D. it is both useful and interesting