C
A technique that controls immediate gas explosions by spraying them with large droplets of water is being tested by scientists at the University of Wales, United Kingdom．Instead of using the traditional fine water sprays when a gas leak is detected, the researchers have discovered that large droplets help to draw in some of the force of any explosion and provide a better way of controlling fire．
The research is based on studies made of the Piper Alpha oil rig （油井） explosion that occurred in the North Sea nine years ago killing 167 workers．The Welsh team found that by covering the gas-leak area with water droplets, the explosion and its effect can be greatly reduced．
Dr Gerand Thomas, a good lecturer in physics at the university’s Center for Explosion Studies, said that it was impossible to deal with gas explosions in the same way as fires because the whole event may only last a quarter of a second and normal water sprays do not have time to be effective．
Using the droplets of water to hold explosions resulted in the water being turned into a mist that allows some force of the explosion to be reduced．The mist slows down the combustion （燃烧） process and can stop a large amount of the gas igniting （点火,燃烧）, thus greatly reducing damage by limiting pressure development．With such a system, the operator has to decide at what point after a gas leak to activate the sprays．
The Center for Explosion Studies is the first of its kind in the UK and has been purposely-built for the study and implication of industrial explosions on land and sea．Research is developed to the causes of accidental explosions and they might be prevented．Full-sized imitative buildings can be built at the center where explosions and fires are created to test preventative equipment using sensors to monitor their efficiency．
Another area that the Welsh researchers have been looking at is how materials respond to explosions．The center also carries out research requested by individual customers．
64．Which of the following would be the best title for the passage?
A．Piper Alpha Oil Rig Explosion
B．Large Droplets of Water
C．A New Way of Controlling Gas Explosions
D．The center for Explosion Studies
65．The research finds that _____ in holding immediate explosion．
A．small water sprays are better than large droplets of water
B．small water sprays are not as good as large droplets of water
C．both small water sprays and large droplets of water are good
D．neither small water sprays nor large droplets of water is good
66．Dr Geraint Thomas implies that ______．
A．normal water sprays can put out fire effectively
B．gas explosions break out more quickly than fires
C．fires are easier to be held than explosions
D．gas explosions break out so quickly that there is no way to control it
67．Which of the following is not included in the research area of the Center for Explosion Studies?
A．To test the result of gas explosion．
B．To get some implications of industrial explosions on land and sea．
C．To find out how materials respond to explosions．
D．To find out when material respond to explosions．
You speak, write a letter, make a telephone. Your words carry a message. People communicate with words. Do you think you can communicate without words? A smile on your face shows you are happy or friendly. Tears in your eyes tell others that you are sad.
When you put up your hands in class, the teacher 
knows you want to say something or ask questions. You shake your head, and people know you are saying "No". You nod and people know you are saying "Yes". Other things can also carry messages. For example, a sign at the bus helps you to know which bus to take. A sign on the door helps you where to go in or out. Have you ever thought that there are a lot of signs around you and that you receive messages from them all the time? People can communicate in many other ways. An artist can use his drawing to tell beautiful mountains, about the blue sea and many other things. Books are written to tell about all the wonderful things in the world and also about people and their ideas. Books, magazines, TV, radio and films all help us communicate with others. They can help us to know what is going on in the world and what other people are thinking about.People communicate ________.
| A．with words only | B．in many different ways |
| C．in letters and drawings | D．with smiles, tears and hands |
Signs can carry as many _________ as words.
| A．questions | B．examples | C．tears and smiles | D．messages |
Which of the following is not talked in the passage as which can help us communicate?
| A．books and magazines | B．TV and films | C．newspapers | D．radio |
Communication is important because it can help people to ______.
| A．understand the world and other people better around us. |
| B．teach each other to speak, write, read and draw. |
| C．know what other people are thinking about |
| D．learn about mountains,blue sea and other things. |
The best title（题目）for this short passage is _________.
| A．Signs Carry Messages | B．The important Communication |
| C．Words, Signs and Drawing | D．Ways of Communication. |
The word “day” has two meanings. When we talk about the number of days in a year, we are using “day” to mean 24 hours. But when we talk about day and night, we are using “day” to mean the time between sunrise and sunset. Since the earth looks like a ball, the sun can shine on only half of it at a time. Always one half of the earth is having day and the other half night. A place is moved from day into night and from night into day over and over by the spinning(旋转) of the earth. At the equator(赤道) day and night are sometimes the same length. They are each twelve hours long. The sun rises at 6 in the morning and sets at 6 in the evening. For six months the North Pole is tilted(倾斜) toward the sun. In those months the Northern Hemisphere(半球) gets more hours of sunlight than the Southern Hemisphere. Days are longer than nights. South of the equator nights are longer than days. For the other six months the North Pole is tilted away from the sun. Then the Southern Hemisphere gets more sunlight. Days are longer than night. North of the equator nights are longer than days. Winter is the season of long nights. Summer is the season of long days.When the Western Hemisphere is having day, the Eastern Hemisphere is having ______.
| A．both day and night | B．day | C．neither day nor night | D．night |
A place is moved from day into night and from night into day over and over by ______ of the earth.
| A．the pushing | B．the pulling | C．the spinning | D．the passing |
At the equator day is as long as night ______.
| A．sometimes | B．never | C．usually | D．always |
When the North Pole is tilted toward the sun, the Northern Hemisphere gets _____ sunlight.
| A．less | B．more | C．all | D．no |
When it is winter in China, ______.
| A．the USA is tilted toward the sun |
| B．the South Pole is tilted away from the sun |
| C．the North Pole is tilted toward the sun |
| D．the North Pole is tilted away from the sun |
Are you looking for something fun and would you like to help others in your spare time? Then join us to be a volunteer! We’re a non-profit (赢利的) organization. We have volunteer jobs of all ages. Anyone, from twelve-year-old children to people in their seventies can become a volunteer.
You can help people in many ways. Schools need help with taking care of children while parents are working. Hospitals need volunteers to look after children while their parents are seeing a doctor. Animal lovers can help take care of those dogs and cats without homes. There is something for everyone.
“As a volunteer, I don’t want to get anything. Seeing the children’s happy faces, I’m happy, too.” Said Carlos Domingo, an old woman of 62. “I often played computer games in my spare time before. Now I help older people learn how to use computers.” said another volunteer at the age of 18.
If everyone helps out a bit, we’ll have a better world to live in. Interested? Call us 1-800-555-5756 or visit our website: www.activol.com.When do the volunteers help others?
| A．In their spare time. | B．At weekends | C．On weekdays. | D．In the evenings. |
_____ can be a volunteer.
| A．Children | B．Old women | C．Anyone aged 12-70 | D．Young people |
Volunteers want to get _______ when they help others.
| A．money | B．computers | C．everything | D．nothing |
Carlos Domingo does volunteer work with ______.
| A．animals | B．children | C．computers | D．older people |
We can read such a passage ______.
| A．in a newspaper | B．in a storybook | C．in a picture book | D．in a textbook |
What is your favorite color? Do you like yellow, orange, red? Do you prefer grays and blues? Then you are probably quiet, shy, and you would rather follow than lead. You tend to be pessimist. At least, this is what psychologists tell us, and they should know, because they have been seriously studying the meaning of color preference, as well as the effect that colors have on human beings.
If you happen to love brown, you did so, as soon as you opened your eyes, or at least as soon as you could see clearly
A yellow room makes most people feel more cheerful and more relaxed than a dark green one; and a red dress brings warmth and cheer to the saddest winter day.
A black bridge over the Thames River, near London, used to be the scene of more suicides(自杀) than any other bridge in the area-until it was repainted green. The number of suicide attempts immediately fell sharply. Perhaps it would have fallen even more if the bridge had been done in pink or baby blue.
It is an established fact that factory workers work better, harder, and have fewer accidents when their machines are painted orange rather than black or gray.
| A．On the other hand, black is depressing. |
| B．They tell us, among other facts, that we do not choose our favorite color as grow up—we are born with our preference. |
| C．The rooms are pained in different colors as you like. |
| D．If you do, you must be an optimist, a leader, an active person who enjoys life, people and excitement. |
E.Light and bright colors make people not only happier but more active.
F.Life is like a picture or a poem, full of different colors.
G. Colors do influence our moods-there is no doubt about it.
How I Turned to Be Optimistic
I began to grow up that winter night when my parents and I were returning from my aunt’s house, and my mother said that we might soon be leaving for America .We were on the bus then. I was crying, and some people on the bus were turning around to look at me. I remember that I could not bear the thought of never hearing again the radio program for school 
children to which I listened every morning.
I do not remember myself crying for this reason again. In fact, I think I cried very little when I was saying goodbye to my friends and relatives. When we were leaving I thought abou
t all the places I was going to see-the strange and magical places I had known only from books and pictures. The country I was leaving never to come back was hardly in my head then.
The four years that followed taught me the importance of optimism, but the idea did not come to me at once. For the first two years in New York I was really lost-having to study in three schools as a result of family moves. I did not quite know what I was or what I should be. Mother remarried, and things became even more complex for me. Some time passed before my stepfather and I got used to each other. I was often sad, and saw no end to “the hard times”.
My responsibilities in the family increased a lot since I knew English better than everyone else at home. I wrote letters, filled out forms, translated at interviews with Immigration officers, took my grandparents to the doctor and translated there, and even discussed telephone bills with company representatives.
From my experiences I have learned one important rule: almost all common trouble eventually go away! Something good is certain to happen in the end when you do not give up, and just wait a little! I believe that my life will turn out all right, even though it will not be that easy.How did the author get to know America?
| A．From her relatives |
| B．From her mother |
C．From books a nd pictures |
| D．From radio programs |
Upon leaving for America the author felt .
| A．confused | B．excited |
| C．worried | D．amazed |
For the first two years in New York, the author .
| A．often lost her way |
| B．did not think about her future |
| C．studied in three different schools |
| D．got on well with her stepfather |