TheFiveRulesforKeepingFitHi,th-优题课

Runners in a relay（接力） race pass a stick in one direction．However, merchants passed silk, gold, fruit, and glass along the Silk Road in more than one direction．They earned their living by traveling the famous Silk Road．
The Silk Road was not a simple trading network．It passed through thousands of cities and towns．It started from eastern China, across Central Asia and the Middle East, and ended in the Mediterranean Sea．It was used from about 200 B．C．to about 1300 A．D．, when sea travel offered new routes（路线）．It was sometimes called the world’s longest highway．However, the Silk Road was made up of many routes, not one smooth path．They passed through what are now 18 countries．The routes crossed mountains and deserts and had many dangers of hot sun, deep snow and even battles．Only experienced traders could return safe．
The Silk Road got its name from its most prized product．Silk could be used like money to pay taxes or buy goods．But the traders carried more than just silk．Gold, silver, and glass from Europe were much found in the Middle East and Asia．Horses traded from other areas changed farming practices in China．Indian merchants traded salt and other valuable goods．Chinese merchants traded paper, which produced an immediate effect on the West．Apples traveled from central Asia to Rome．The Chinese had learned to graft（嫁接） different trees together to make new kinds of fruit．They passed this science on to others, including the Romans．The Romans used grafting to grow the apple．Trading along the Silk Road led to world-wide business 2,000 years before the World Wide Web．
The people along the Silk Road did not share just goods．They also shared their beliefs．The Silk Road provided pathways for learning, diplomacy（外交）, and religion （宗教）．
61．It’s probable that traders along the Silk Road needed ．
A．to remember the entire trade route B．to know the making of products
C．to receive certain special training D．to deal with a lot of difficulties
62．The Silk Road became less important because．
A．it was made up of different routes B．silk trading became less popular
C．sea travel provided easier routes D．people needed fewer foreign goods
63．What does the underlined part in Paragraph 3 refer to?
A．Silk． B．A trading network．
C．The world’s longest highway． D．Goods．k.s.5.u
64．New technologies could travel along the Silk Road because people．
A．learned from one another B．shared each other’s beliefs
C．traded goods along the route D．earned their living by traveling
65．What is the best title for the passage?
A．The Silk Road: Past and Present B．The Silk Road: East Meets West
C．The Silk Road: Routes Full of Dangers D．The Silk Road: Pathways for Learning

The meaning of the word “volunteer” may be a little different in different countries, but it usually means “one who offers his or her services．” There are many different ways in which people can volunteer, such as taking care of sick people, working in homes for homeless children, and picking up garbage from beaches and parks．Volunteers may work within their own countries or in other countries．They are often people with a strong wish to help those who are less fortunate than themselves．Volunteers don’t expect any kind of pay．
At the root of volunteering is the idea that one person may have the ability to offer services that can help other people．Tracy, a good friend of mine, however, recently came back from India with a new idea of what being a volunteer means．She worked for two and a half weeks in one of Mother Teresa’s homes in Calcutta．The following is her story．
“I first heard about Mother Teresa in my high school．We watched a video about her work in India and all over the world．I was so moved by her spirit to help others and her endless love for every human being that after I graduated from high school, I too wanted to try her kind of work．So with two friends I flew to Calcutta for a few weeks．”
“I was asked to work in a home for sick people．I helped wash clothes and sheets, and pass out lunch．I also fed the people who were too weak to feed themselves and tried to cheer them up．I felt it was better to share with them than to think that I have helped them．To be honest, I don’t think I was helping very much．It was then that I realized that I had not really come to help, but to learn about and experience another culture that helped improve my own understanding of life and the world．”
66．According to the text, a volunteer refers to a person who ______．
A．is willing to help those in need without pay
B．can afford to travel to different places
C．has a strong wish to be successful
D．has made a big fortune in life
67．Tracy started her work as a volunteer _______．
A．after she met Mother Teresa
B．after she finished high school
C．when she was touring Calcutta
D．when she was working in a hospital
68．Why did Tracy choose to be a volunteer?
A．She liked to work with Mother Teresa．
B．She had already had some experience．
C．She was asked by Mother Teresa’s example．
D．She wanted to follow Mother Teresa’s example．
69．What is Tracy’s “new idea”（Paragraph 2） of being a volunteer?
A．Going abroad to help the sick．
B．Working in Mother Teresa’s home．
C．Doing simple things to help the poor．
D．Improving oneself through helping others．
70．What is the best title for the passage?
A．How To Be A Volunteer． B．Voluntary Life In India．
C．A Different Meaning Of Volunteer． D．Inspiration From Mother Teresa．

The common cold is the world’s most widespread illness, which is plagues(疫病) that flesh receives.
The most widespread fallacy(谬误) of all is that colds caused by cold. They are not. They are caused by viruses(病毒) passing on from person to person. You catch a cold by coming into contact, directly or indirectly, with someone who already has one. If cold causes colds, it would be reasonable to expect the Eskimos to suffer from them forever. But they do not. And in isolated arctic regions explorers have reported being free from colds until coming into contact again with infected people from the outside world by way of packages and mail dropped from airplanes.
During the First World War soldiers who spent long periods in the trenches(战壕), cold and wet, showed no increased tendency to catch colds.
In the Second World War prisoners at the notorious Auschwitz concentration camp(奥斯维辛集中营), naked and starving, were astonished to find that they seldom had colds. At the Common Cold Research Unit in England, volunteers took part in Experiments in which they gave themselves to the discomforts of being cold and wet for long stretches of time. After taking hot baths, they put on bathing suits, allowed themselves to be with cold water, and then stood about dripping wet in drafty room. Some wore wet socks all day while others exercised in the rain until close to exhaustion. Not one of the volunteers came down with a cold unless a cold virus was actually dropped in his nose.
If, then, cold and wet have nothing to do with catching colds, why are they more frequent in the winter？Despite the most pains-taking research, no one has yet found the answer. One explanation offered by scientists is that people tend to stay together indoors more in cold weather than at other times, and this makes it easier for cold viruses to be passed on.
No one has yet found a cure for the cold. There are drugs and pain suppressors(止痛片) such as aspirin, but all they do is relieve the symptoms(症状).
51. The writer offered _______ examples to support his argument.
A. 4 B. 5 C. 6 D. 3
52. Which of the following does not agree with the chosen passage?
A. The Eskimos do not suffer from colds all the time.
B. Colds are not caused by cold.
C. People suffer from colds just because they like to stay indoors.
D. A person may catch a cold by touching someone who already has one.
53. Arctic explorers may catch colds when _______.
A. they are working in the isolated arctic regions
B. they are writing reports in terribly cold weather
C. they are free from work in the isolated arctic regions
D. they are coming into touch again with the outside world
54. Volunteers taking part in the experiments in the Common Cold Research Unit _______.
A. suffered a lot B. never caught colds
C. often caught colds D. became very strong
55. The passage mainly discusses _______.
A. the experiments on the common cold
B. the fallacy about the common cold
C. the reason and the way people catch colds
D. the continued spread of common colds

There are two types of people in the world. Although they have equal degree of health and wealth and other comforts of life, one becomes happy and the other becomes unhappy. This arises from the different ways in which they consider things, persons, events and the resulting effects upon their minds.
People who are to be happy fix their attention on the convenience of things: the pleasant parts of conversation, the well prepared dishes, the goodness of the wine and the fine weather. They enjoy all the cheerful things. Those who are to be unhappy think and speak only of the opposite things. Therefore, they are continually dissatisfied. By their remarks, they sour the pleasure of society, offend(hurt) many people, and make themselves disagreeable everywhere. If this turn of mind was founded in nature, such unhappy persons would be the more to be pitied. The intention of criticizing(批评) and being disliked is perhaps taken up by imitation(模仿). It grows into a habit, unknown to its possessors. The habit may be strong, but it may be cured when those who have it realize its bad effects on their interests and tastes. I hope this little warning may be of service to them, and help them change this habit.
Although in fact it is chiefly an act of the imagination, it has serious results in life since it brings on deep sorrow and bad luck. Those people offend many others; nobody loves them, and no one treats them with more than the most common politeness and respect. This frequently puts them in bad temper and draws them into arguments. If they aim at getting some advantages in social position or fortune, nobody wishes them success. Nor will anyone start a step or speak a word to favor their hopes. If they bring on themselves public objections, no one will defend or excuse them, and many will join to criticize their wrongdoings. These should change this bad habit and be pleased with what is pleasing, without worrying needlessly about themselves and others. If they do not, it will be good for others to avoid any contact(接触) with them. Otherwise, it can be disagreeable and sometimes very inconvenient, especially when one becomes mixed up in their quarrels.
46. People who are unhappy _______.
A. always consider things differently from others
B. usually are affected by the results of certain things
C. usually misunderstand what others think or say
D. always discover the unpleasant side of certain things
47. The phrase “sour the pleasure of society” most nearly means “_______”.
A. have a good taste with social life B. make others unhappy
C. tend so scold others openly D. enjoy the pleasure of life
48. We can conclude from the passage that _______.
A. we should pity all such unhappy people
B. such unhappy people are dangerous to social life
C. people can get rid of the habit of unhappiness
D. unhappy people can not understand happy persons
49. If such unhappy persons insist on keeping the habit, the author suggests that people should _______.
A. prevent any communication with them
B. show no respect and politeness to them
C. persuade them to recognize the bad effects
D. quarrel with them until they realize the mistakes
50. In this passage, the writer mainly _______.
A. describes two types of people
B. laughs at the unhappy people
C. suggests the unhappy people should get rid of the habits of unhappiness
D. tells people how to be happy in life

In the atmosphere, carbon dioxide acts rather like a one-way mirror or the glass in the roof of a greenhouse which allows the sun's rays to enter but prevents the heat from escaping.
　　 According to a weather expert' s prediction, the atmosphere will be 3℃ warmer in the year 2050 than it is today, if man continues to burn fuels at the present rate. If this warming up took place, the ice caps in the poles would begin to melt, thus raising sea level several metres and severely flooding coastal cities. Also, the increase in atmospheric temperature would lead to great changes in the climate of the northern hemisphere (北半球), possibly resulting in an alteration of the earth's chief food growing zones.
　　 In the past, concern about a man-made warming of the earth has concentrated on the Arctic because the Antarctic is much colder and has a much thicker ice sheet. But the weather experts are now paying more attention to West Antarctic, which may be affected by only a few degrees of warming, in other words, by a warming on the scale that will possibly take place in the next fifty years from the burning of fuels.
　　 Satellite pictures show that large areas of Antarctic ice are already disappearing. The evidence available suggests that a warming has taken place. This fits the theory that carbon dioxide warms the earth.
　　 However, most of the fuel is burnt in the northern hemisphere, where temperatures seem to be falling. Scientists conclude , therefore, that up to now natural influences on the weather have gone beyond those caused by man. The question is: Which natural cause has most effect on the weather?
　　 One possibility is the variable behavior of the sun. Astronomers at one research station have studied the hot spots and "cold" spots (that is, the relatively less hot spots) on the sun. As the sun rotates (使旋转), every 27. 5 days, it presents hotter or "colder" faces to the earth, and different aspects to different parts of the earth. This seems to have a considerable effect on the distribution of the earth's atmospheric pressure, and consequently on wind circulation. The sun is also changeable over a long term: its heat output goes up and down in cycles, the latest trend being downward.
　　 Scientists are now finding shared relations between models of solar weather interactions and the actual climate over many thousands of years, including the last Ice Age. The problem is that the models are predicting that the world should be entering a new Ice Age and it is not. One way of solving this theoretical difficulty is to assume a delay of thousands of years while the solar effects overcome the inertia (惯性) of the earth's climate. If this is right, the warming effect of carbon dioxide might thus be serving as a useful opposed balance to the sun's fading heat .
66. It can be concluded that a concentration of carbon dioxide in the atmosphere would_________.
A. mean a warming-up in the Antarctic
B. raise the temperature of the earth' s surface
C. prevent the sun's rays from reaching the earth's surface
D. explain the cause of great changes in the climate in the northern hemisphere
67.The article was written to explain ___________.
A. the greenhouse effect
B. the solar effects on the earth
C. the causes affecting weather
D. the models of solar-weather interactions
68. Although the fuel consumption is greater in the northern hemisphere, temperatures there　seem to be falling. This is__________.
A. mainly because the levels of carbon dioxide are rising
B. partly due to changes in the output of solar energy
C. possibly because the ice caps in the poles are melting
D. only due to the effect of the inertia of the earth' s climate
69. On the basis of their models, scientists believe the opinion that__________.
A. the climate of the world should be becoming cooler
B. the new Ice Age will be delayed by the greenhouse effect
C. the man-made warming effect helps to increase the solar effects
D. it will take thousands of years for the inertia of the earth's climate to take effect
70. If the assumption about the delay of a new Ice age is correct, ____________.
A. ice would soon cover the northern hemisphere
B. the greenhouse effect could work in favor of the earth
C. the best way to overcome the cooling effect would be to burn more fuels
D. the increased levels of carbon dioxide in the atmosphere could warm up the earth even more quickly