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

While watching the Olympics the other night,I came across an incredible sight.The　1　was swimming and started with only three men.For one reason or another,two of them had a　2　start,so they were disqualified.That would have been difficult enough,not having anyone to 　3　against.
I watched the man　4　off the blocks and knew immediately that something was wrong.Now I’m not an expert　5　but I do know a good dive　6　a poor one,and this was not exactly medal　7　.I listened to the crowd begin to　8　this poor man who was clearly having a　9　time.Finally he made his turn to start back.It was　10　.He made a few desperate strokes (划水) and you could tell he was exhausted.
But in those few　11　strokes,the crowd had changed.No longer were they laughing,but beginning to　12　.Some even began to　13　things like,“Come on,you can do it！”,and he　14　finished his race.The crowd went　15　.Even though he recorded one of the　16　times in Olympic history,this man gave more heart than any of the other　17　.
In a competition where athletes remove their silver medals,feeling they have　18　been cheated out of gold,or when they act so　19　in front of their competitors,it is nice to watch an underdog (失败者),a man that gave his all—knowing that he had no chance,but competed because of his　20　and the spirit of the games.

B
　　Fever has usually been regarded as a threat to health.However,no one has actually proved that fever is dangerous.This fact attracted the attention of Matthew J.Kluger.Imagining that fever might not be as harmful as it had been supposed,Kluger set up a series of experiments with lizards(蜥蜴).
　　What Kluger and his team did his team did in their first experiment was simple.They put some lizards in a sand-box,one end of which was heated to 44℃,while the other was at a room temperature.It was found that the lizards moved form one part of the box to the other in order to keep a constant temperature of about 38℃.Having shown that normal lizards regulate(调节) their own temperature,Kuger,in a second experiment,then set out to show that lizards,like most other animals,develop fever when infected.This was done by making lizards infected with bacteria (细菌) that were known to cause disease.As the team expected,the infected lizards remained longer in the heated part of the box,until they had raised their body temperatures to two or three degrees above normal.In other words,the sick lizards gave themselves fever.
　　In a third experiment,the team observed the effect of temperature on the survival of the lizards.One group of infected lizards was given a fever - suppressing(退烧) drug.The other group was given no drug and ran a fever,that is to say,they kept a highter temperature for four or five days before seeking a cooler environment.The results were impressive.Of those which raised their body temperature,all but one remained alive.Of those given the fever - suppressing drug,more than half died.Similar results have since been produced in other animals.For example,infeced fish swim to warmer water,and will die if not allowed to do so.
　　An important conclusion can be drawn from these experiments.As Kluger points out,lizards have been on earth for hundreds of millions of years.It is reasonable to suppose that a response that is so old has been kept by nature for some purpose.It would appear, therefore, that fever does not make disease worse.Rather it its part of the mechanism(机能) by which infection is controlled.
　　60.In his experiments,Kluger was hoping to prove that fever ________.
　　　A.is not harmful to lizards
　　　B.is not necessarily bad
　　　C.is necessary for both humans and animals
　　　D.has the same effect on humans and animals
　　61.The lizards put in the sand - box in the first experiment _____.
　　　A.had a fever B.were not sick C.recovered from disease D.died of heat
　　62.In the third experiment,the lizards given a fever - suppressing drug died because _____.
　　　A.they had no more fever that they needed
　　　B.they were normal ones and had no fever
　　　C.the drug had no iffect on sick lizards
　　　D.the drug made their body temperature too low
　　63.How would you understand the underlined words"a response" in the last paragraph?
　　　A.Gause of disease. B.Recovery from disease.
　　　C.Relationship between living D.Natural defense in the body against disease.

Tim Welford, aged 33, and Dom Mee, aged 30, both from England, were keen on (=like... very much) rowing boats. They made a plan to row across the Pacific Ocean from Japan to San Francisco. The name of their rowboat was “Crackers”. It was about seven meters long.

     They set out from Japan on May 17,2001. They had rowed nearly 5,500 miles when their boat was hit by a fishing ship on September 17,2001. Luckily they both escaped unharmed, but their boat was badly damaged and they had to abandon( = stop)their journey.

　 　In a radio interview, Dom expressed his disappointment and explained how the accident took place.

　　“A fishing ship came towards us with nobody on the bridge and ran us down. It all happened so quickly. I managed to dive into the water. Tim felt it would be safer to stay on board. He was trapped inside as the boat was driven under the water. Finally some people appeared on the ship and saw me in the water. I shouted at them to stop the ship and to get Tim out. When the ship stopped, I eventually saw Tim, and I was very, very happy that we were still alive. We were very disappointed that we couldn’t reach San Francisco. But we are alive. That above everything is the most important. ”

41. How long had Tim and Dom been at sea when their boat was hit by a fishing boat?

A. For one month　 　           B. For two months. 

C. For three months.　　        D. For four months.

42. According to Dom, the main reason for the accident was that________.

A. Tim and Dom were too careless

B. the speed of the fishing ship was too fast

C. nobody on the fishing ship saw them

D. their rowboat was not strong enough

43. Dom said that the most important thing in this accident was that________.

A. their rowboat was not damaged

B. both of them existed after a dangerous time

C. they enjoyed this journey

D. they failed to reach San Francisco

44. Which of the following statements is NOT TRUE?

A. Some people on the fishing ship saved them.

B. Tim and Dom were going to San Francisco in the rowboat because they had no money to buy airplane tickets.

C. Dom dived into the water when the accident happened because he thought it would be dangerous to stay on board.

D. Dom told people about their dangerous experience when he was interviewed on the radio.