Dolphins（海豚）are not fish, but warm-blooded animals. They live in groups, and speak to each other in their own language. In this, they are like other animals, such as bees and birds. But dolphins are very different from almost all land animals. Their brain is nearly the same size as our own, and they live a long time―at least twenty or thirty years. Like some animals, dolphins use sound to help them find their way around. They also make these sounds to talk to each other and to help them find food. We now know they do not use their ears to receive these sounds, but the lower part of the mouth, called the jaw.
Strangely, dolphins seem to like man, and for thousands of years there have been stories about the dolphin and its friendship with people.
There is a story about sailors in the 19th century. In a dangerous part of the sea off the coast of New Zealand, they learnt to look for a dolphin called Jack. From 1871 to 1903, Jack met every boat in the area and showed it the way. Then in 1903 a passenger on a boat called The Penguin shot and wounded Jack. He recovered and for nine years more continued to guide all ships through the area－except for The Penguin.
Today, some people continue to kill dolphins, but many countries of the world now protect them and in these places it is against the law to kill them. Dolphins are different from many other animals in that they _____.
| A．live in groups | B．have large brains | C．are warm-blooded | D．have their own language |
Which of the following does the dolphin use to help it find its way around?
| A．Its nose. | B．Its ears. | C．Its mouth. | D．Its eyes. |
Why did the sailors off the coast of New Zealand look for Jack?
| A．He was lonely and liked to be with people. |
| B．They enjoyed playing with him. |
| C．He was seriously wounded. |
| D．They wanted his help. |
By telling the story of Jack, the writer wanted to show that _____.
| A．dolphins are friendly and clever | B．people are cruel to animals |
| C．Jack is different from other dolphins | D．dolphins should be protected by law |
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 |
Food sometimes gets poisoned(中毒) with harmful things. A person who eats such food can get
an illness called food poisoning. Food poisoning is usually not serious, but some types are deadly. The symptoms of food poisoning usually begin within hours of eating the poisoned food. Fever is one of
the most common symptoms.
Certain microorganisms(微生物) cause most types of food poisoning. Bacteria and other microorganisms can poison eggs, meat, vegetables, and many other foods. After entering the body, these tiny living 
things release(释放) poisons that make people sick.
Some chemicals（化合物） can also cause food poisoning. They are often added to food while it is being grown, processed, or prepared. For example, many farmers spray chemicals on crops to kill weeds and insects. Some people may have a bad reaction to those chemicals when they eat the crops.
Some plants and animals contain natural poisons that are harmful to people. These include certain kinds of seafood, grains, nuts, seeds, beans, and mushrooms.
When people handle food properly, the risk of food poisoning is very small. Microorganisms multiply rapidly in dirty places and in warm temperatures. This means that people should never touch food with dirty hands or put food on unwashed surfaces. Food should be kept in a refrigerator to stop microorganisms from growing. Meat needs to be cooked thoroughly to kill any dangerous microorganisms. People should also wash food covered with chemicals before eating it. Finally, people should not eat wild mushrooms or other foods that grow in the wild. Some of these foods may contain natural materials that are poisonous to humans. In addition, some types of fish can be poisonous.
Most people recover from food poisoning after a few day of resting and drinking extra water. If people eat natural poisons, they must go to the hospital right away to have their stomachs emptied.
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