题目内容
（请给出正确答案）
Question 3
(a)Air tickets usually fall into three classes: top class, business class, and economy class. What is the economic rationale for this phenomenon？
(b)What is price discrimination？ Are there any necessary requirements for successful price discrimination？ Please give two more examples to explain your answer.
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Directions:
This section is designed to test your ability to understand spoken English. You will hear a selection of recorded materials and you must answer the questions that accompany them. There are TWO parts in this section, Part A and Part B.
Remember, while you are doing the test, you should first put down your answers in your test booklet. At the end of the listening comprehension section, you will have 3 minutes to transfer your answers from your test booklet onto ANSWER SHEET 1.
If you have any questions, you may raise your hand NOW as you will not be allowed to speak once the test has started.
Now look at Part A in your test booklet.
Part A
You will hear 10 short dialogues. For each dialogue, there is one question and four possible answers. Choose the correct answer—A, B, C or D, and mark it in your test booklet. You will have 15 seconds to answer the question and you will hear each dialogue ONLY ONCE. Now look at question 1.
Question 1:
W: Air China has a flight on August 27th. Will that be OK, sir？
M: No, I'm afraid not. My sister is getting married on the 26th.
W: How about Air China Flight 985 on the 25th？
M: Oh, that's good.
Question 2:
W: What would you like for dessert？
M: I think I'll have an ice cream. I suggest you try some chocolate cake.
W: Well, I have to watch my weight. You go ahead and get yours.
Question 3:
M: Can I give you a lift？
W: Isn't it out of your way？
M: No, it's on my way home.
W: You're so nice. Thank you.
Question 4:
M: I have to leave now.
W: So soon？ Can't you stay a little longer？
M: I wish I could, but it's very late now. Thank you for your wonderful meal.
W: I'm glad you enjoyed it.
Question 5:
M: Do you mind me putting my heavy luggage in your room？
W: No. Go ahead.
M: And would you mind if I take off my shoes？ My feet are killing me.
W: Well, I'd rather you didn't. It's rather a hot day.
Question 6:
M: Look at the long waiting line. I'm glad you've made a reservation.
W: Because I know a lot of people now like eating out, especially on weekends. M. Yes, what's more, this place is very popular in this district.
Question 7:
M: I haven't got my scores on the PETS yet. Do you think I should call to ask for it？
W: There's no hurry. You won't get any results even you call it.
M: But I have already waited for a long time.
W: The test scores will be released at least one more month later.
Question 8:
M: Look at the bed. We bought it last month but the price is 50% off now!
W: Yes, we cut the price down just now.
M: Can I return the one I bought and get my money back？
W: I'm afraid it's too late. Only those bought in ten days can be returned.
Question 9:
M: May I know your e-mail address？
W: I'll send you an e-mail, so we don't have to do the spelling on the phone, OK？
M: That's a good idea.
Question 10:
M: My toothache is killing me.
W: I told you to make an appointment yesterday.
M: I thought it was going away. But now it's getting worse.
Which flight will the man take？
[A] Air China Flight 985 on the 26th.
[B] Air China Flight 985 on the 27th.
[C] Air China Flight 985 on the 28th.
[D] Air China Flight 985 on the 25th
听力原文：W：Thank heavens it's Friday. Are you doing anything special this weekend？
M：Good question，To tell you the truth，my brother might be coming over and so everything is up in the air right now．
Q: What does the man mean？
(16)
A．He has no definite plans.
B．He has to work with his brother.
C．he usually works on weekends.
D．His plans depend on the woman.
Part A
Directions: You will hear 10 short dialogues. For each dialogue, there is one question and four possible answers. Choose the correct answer ― A, B, C or D, and mark it in your test booklet. You will have 15 seconds to answer the question and you will hear each dialogue ONLY ONCE.
听力原文：M: Can you tell me how much it would cost to send this package by air？
W: Do you want to insure it？
Where is this conversation probably taking place？
A．In a post office.
B．At an insurance agency.
C．On an airplane.
D．In a moving company.
根据以下材料，回答题
Air Pollution
There is no question that the old style. of air pollution could kill people. In one week following the infamous "peasouper" fog in December 1952，4，700 people died in London. Most of these people were elderly and already had heart or lung diseases. A series of these killer fogs eventually led to the British Parliament passing the Clean Air Act which restricted the burning of coal.
Fortunately， the effect of smog on the lungs is not so dramatic. Scientists have now conducted a number of laboratory experiments in which volunteers are exposed to ozone inside a steel chamber for a few hours. Even at quite low concentrations there is a rewrsible fall in lung function，an increase in the irritability of the lungs and evidence of airway inflammation. Although irritable and inflamed lungs are particularly seen in people with asthma（哮喘 ）and other lung diseases， theseeffects of ozone also occur in healthy subjects. Similar changes are also seen after exposure to nitrogen dioxide， although there is some disagreement about the concentration at which they occur.
Other studies have found that people living in areas with high levels of pollution have more symptoms and worse lung function than those living in areas with clean air. Groups of children attending school camps show falls in lung function even at quite low concentrations of ozone.
There is also a relationship between ozone levels and hospital admissions for asthma， both in North America and Australia. It is suspected that long-term exposure to smog may result in chronic bronchitis （支气管炎） and emphysema （肺气肿） ， but this has yet to be proven.
Recently an association has been found between the levels of particles in the air and death rates in North American cities. The reason for this association is not understood and as yet there is no evidence this occurs in Australia. However， we do know that hazy days are associated with more asthma attacks in children.
Which of the following is NOT the result of laboratory experience？ 查看材料
A.Low concentrations.
B.Fall in lung function.
C.Irritability of the lungs.
D.Airway inflammation.
SectionB
Directions: In this section,you will hear3 short passages.At the end of each passage,you will hear some questions.Both the passage and the questions will be spoken only once.After you hear a question,you must choose the best answer from the four choices marked A)，B），C)and D). Then mark the corresponding letter on Answer Sheet2 with a single line through the centre.
Passage One
Questions 26 t0 28 are based on the passage you have just heard.
26.
A. There were no planets without moons.
C. Life was not possible in outer space.
B. There was no air or water on Jupiter.
D. The mystery of life could not be resolved.
A.在迁移启动阶段的准备工作中，需要考虑腾讯云上资源的批量创建，需要经历以下哪些步骤
B.1、使用资源扫描工具扫描资源 5、根据选型对照表调整映射规格 6、生成TIC模板 7、将模传入资源编排TIC服务进行创建
C.1、在数据源服务商处索要产品list 2、调用腾讯云API的资源创建接口，开发程序并导入产品list 3、运行创建资源的程序
D.1、根据数据源测资源编写资源列表 2、在资源创建工具中上传资源列表，并生成TIC模板 3、奖模板传入资源编排TIC服务进行创建
E.1、在云服务器安装创建工具，并创建任务文件，添加扫描源、SecretId、SecretKey、Regions等配置； 2、在资源创建工具启动资源创建，创建工具会自动完成资源创建
听力原文：W: Are you really leaving for Hong Kong today, Ken？
M: I guess so. I've got my tickets today and I'm anxious to see Tina on Sunday.
Q: What do we learn from the conversation？
(3)
A．Ken is leaving for Hong Kong.
B．Tina is leaving for Hong Kong.
C．Ken wants to meet Tina on Saturday.
D．Tina wants to meet Ken in Hong Kong tomorrow.
？Read the article about goods and services.
？For each Question 31-40, write one word in CAPITAL LETTERS on your Answer Sheet.
Most of the activity of our economic system is connected with the production and consumption of goods and services. A commodity is anything that (31) human needs. The bread that I eat, the shoes that I wear, the house that I live in are all goods. Individual (32) will differ, of course. I do not happen to care for roses, but as long as someone does, they are a good. Two conditions are (33) for the existence of a good: a human need and a means to meet that need.
Goods may be divided into two main (34) : free goods and economic goods. Free goods are those that are so much supplied by nature that no human effort is (35) to get them. Economic goods are those that are so scarce and relative to human wants that human effort is required to get them. It will be (36) to the reader that whether a commodity falls in the part of free goods or economic goods will depend upon the (37) . On a small island, coconuts might be considered a free good. But when we consider the effort necessary to gather and (38) them, coconuts in New York City are an economic good. Probably the only goods that are free goods under nearly all circumstances are (39) air and sunshine.
A service is any nonmaterial good. The acts of the barber who cuts my hair, and of the railroad that carries me to Chicago are services. Since (40) are generally consumed at the same time that they are produced, it is sometimes convenient to draw a distinction between them.
(31)
