There are various ways in which individual economic units can interact with one another. Three basic ways may be described as the market system, the administered system, and the traditional system.

　　In a market system individual economic units are free to interact among each other in the marketplace. It is possible to buy commodities from other economic units or sell commodities to them. In a market, transactions may take place via barter or money exchange. In a barter economy, real goods such as automobiles, shoes, and pizzas are traded against each other. Obviously, finding somebody who wants to trade my old car in exchange for a sailboat may not always be an easy task. Hence, the introduction of money as a medium of exchange eases transactions considerably. In the modern market economy, goods and services are bought or sold for money.

　　An alternative to the market system is administrative control by some agency over all transactions. This agency will issue commands as to how much of each good and service should be produced, exchanged, and consumed by each economic unit. Central planning may be one way of administering such an economy. The central plan, drawn up by the government, shows the amounts of each commodity produced by the various firms and allocated to different households for consumption. This is an example of complete planning of production, consumption, and exchange for the whole economy.

　　In a traditional society, production and consumption patterns are governed by tradition; every person’s place within the economic system is fixed by parentage, religion, and custom. Transactions take place on the basis of tradition, too. People belonging to a certain group or caste（阶级） may have an obligation to care for other persons, provide them with food and shelter, care for their health, and provide for their education. Clearly, in a system where every decision is made on the basis of tradition alone, progress may be difficult to achieve. An inactive society may result.

1.What is the main purpose of the passage?

　 A. To outline contrasting types of economic systems.

　 B. To explain the science of economics.

　 C. To argue for the superiority of one economic system.

　 D. To compare barter and money-exchange markets.

2.In the second paragraph, the underlined word “real” could best be replaced by _______.

　 A. valuable         B. concrete         C. absolute            D. reliable

3.According to the passage, a barter economy can generate ______.

 A. rapid speed of transactions             B. misunderstandings

　 C. inflation                             D. difficulties for the traders

4.According to the passage, who has the greatest degree of control in the administered system?

　 A. Individual households.                    B. Small businesses.

　 C. Major corporations.                   D. The government.

5.Which of the following is not mentioned by the author as a criterion（标准）for determining a person’s position in a traditional society?

　 A. Family background                 B. Age

　 C. Religious beliefs.                        D. Custom

 

阅读理解

    In the 1930's, a lot of people in the USA were out of work. Among these people was a man named Alfred Butts. He always has an interest in word games and so, to fill his time, he planned a game which he called“Lexico”. However, he was not completely satisfied with the game, so he made a number of changes to it and, in time, changed its name from“Lexico”to“Alph”and then to“Criss·Cross”. He wanted to make some money from his new game, but he didn't have any real commercial（商业性的）success.

　　In 1939, Butts happened to meet a man called Jim Brunot who showed an interest in the new game. The two men worked together on developing the game and in 1984 it was offered for sale in the United States under its new name--“Scrabble”.

　　At first, it didn't sell very well. In the first year it sold just 2,250 sets and by 1951 it had only reached 8,500sets a year.

　　Then, in 1952 the manager of Macy's department store in New York, Jack Strauss, happened to play“Scrabble”while he was on holiday. He thought it was a wonderful game and, when the went back to work after his holiday, he insisted that Macy's should stock（储备）the game and make an effort to call the public's attention to it.

　　As a result,“Scrabble”became a big success in the United States and it soon spread to Australia and then to other English-speaking countries.

（1）The text is mainly about _______.

[　　]

（2）Alfred Butts invented the game“Lexico” ________.

[　　]

A. to make himself famous

B. to make spelling simpler

C. when he was out of work and looking for a job

D. when he was playing word games to pass the time

（3）Who made“Scrabble”popular?

[　　]

A. Alfred Butts.

B. Jack Strauss.

C. Alfred Butts and Jim Brunot.

D. Jack Strauss and Jim Brunot.

（4）When did Alfred Butts first put his game on the market?

[　　]

A. In 1939.

B. In 1948.

C. Before 1939.

D. Between 1939 and 1948.

（5）What does the underlined word“call”mean in Paragraph 4?

[　　]

　　Want a glance of the future of health care? Take a look at the way the various networks of people about patient care are being connected to one another, and how this new connectivity is being exploited to deliver medicine to the patient - no matter where he or she may be.

　　Online doctors offering advice based on norman symptoms（症状）are the most obvious example. Increasingly, however, remote diagnosis（远程诊断）will be based on real physiological data（生理数据）from the actual patient. A group from the University of Kentucky has shown that by using personal data assistance plus a mobile phone ,it is perfectly practical to send a patient’s important signs over the telephone. With this kind of equipement, the cry asking whether there was a doctor in the house could well be a thing of the past.

　　Other medical technology groups are working on applying telemedicine to rural （countryside） care. And at least one team wants to use telemedicine as a tool for disaster need - especially after earthquakes. On the whole, the trend is towards providing global access to medical data and experts’ opinions.

　　But there is one problem. Bandwidth（宽带） is the limiting factor for sending complex （复 杂 ）medical pictures around the world,—CU photos being one of the biggest bandwidth users. Communication satellites say be able to deal with the short - term needs during disasters such as earthquakes or wars. But medicine is looking towards both the second - generation Internet and third generation mobile phones for the future of remote medical service.

　　Doctors have met to discuss computer - based tools for medical diagnosis, training and telemedicine. With the falling price of broadband communications, the new technologies should start a new time when telemedicine and the sharing of medical information, experts’opinions and diagnosis are common.

　The writer chiefly talks about ________ .

　　A. the use of telemedicine

　　B. the on -lined doctors

　　C. medical care and treatment

　　D. communication improvement

　Which of the following statements is true according to the text?

　　A. Patients don’t need doctors in hospitals any more.

　　B. It is impossible to send a patient’s signs over the telephone.

　　C. Many teams use telemedicine dealing with disasters now.

　　D. Broadband communications will become cheaper in the future.

The“problem”in the fourth paragraph refers to the fact that ________ .

　　A. bandwidth isn’t big enough to send complex medical pictures

　　B. the second - generation of Internet has not become popular yet

　　C. communication satellites can only deal with short - term needs

　　D. there is not enough equipment for spreading the medical care

　　　　　　　　　　　　　　　　　　　　　

　　Fear can be fun. Many young people queue up to ride very fast and scary roller coasters, screaming but enjoying themselves. Other people like to read “goose bumps (鸡皮疙瘩)” books or watch horror movies at night, scared to death but feeling excited. Why do people like being scared?

　　Fear is an ancient way of surviving. Being scared makes animals, including humans escape from danger and save themselves. It is because of fear that we have lived through millions of years of evolution. Those who lacked a strong fear response were more likely to be killed, leaving the more fearful and careful to pass their genes onto the next generation.

　　How do scientists explain why shaking over such scary things is fun? “Some kids will go to a scary movie and love it and laugh over it, others will feel anxious and hide their faces and some won’t even set foot in the cinema,” said Ned Kalin, a US scientist. “Which kind of person you are depends partly on experiences you’ve had and partly on your genes.”

　　What happens in the brain when something frightens you? Nerves that begin at the eyes and ears lead to a part of the brain called the amygdale. When you suddenly see a snake, for example, the amygdale makes you freeze, sweat, have a quickened heartbeat, or run very fast. However, seeing the snake also uses another part of the brain, the cortex. It analyzes the situation, and if it finds that the snake is only made of rubber it tells your heart and the rest of your body to calm down. Think of the amygdale as the engine and the cortex as the brake.

　　Back to the first question: Why do some people like to make themselves scared? “One reason is that we can play games with fear, find ways to reduce the scariness by looking away or thinking of something else,” Kalin said. “To believe we have control over a situation gives us a feeling of power.” “Scary movies or novels are good practice to prepare young people for the real thing. Thrills such as roller coaster rides also go to the brain’s pleasure centre.”

　　And there might be some evolutionary advantage to being able to adjust this system that is there to protect people.

　　72. How many questions are answered in the passage?

　　A. 2. 　　　B. 3. 　　　C. 4.　　　 D. 5.

　　73. Some people like to be scared because______.

　　A. they are afraid that the fear genes will be passed onto their children

　　B. it’s a good practice to get prepared for the real frightening situation

　　C. it can help them show their own personalities

　　D. they will feel powerful after getting rid of fear

　　74. Which of the following is true about the people who are not easily scared?

　　A. Their cortex is better at analyzing the situations.

　　B. They are more likely to suffer from potential danger.

　　C. They are born unaffected by anything horrible.

　　D. They lack a strong response towards threat.

　　75. What is the best title of the passage?

　　A. Ready to scream? 　　　　B. How to be scared?

　　C. Willing to shake?　　　　D. Why to be scared?