A small piece of fish each day may keep the heart doctor away．That's the finding of a scientific study of Dutch men in which deaths from heart disease were more than 50 percent lower among those who consumed at least an ounce（盎司）of salt water fish per day than those who never ate fish.
The Dutch research is one of three human studies that hold the belief that eating fish can provide health benefits, particularly to the heart. Heart disease is the number-one killer in the United States, with more than 550,000 deaths occurring from heart attacks each year．But researchers previously have noticed that the incidence （发生率） of heart disease is lower in cultures that consume more fish than Americans do．There are fewer heart disease deaths, for example, among the Eskimos of Greenland, who consume about 14 ounces of fish a day, and among the Japanese, whose daily fish consumption averages more than 3 ounces.
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For 20 years, the Dutch study followed 852 middle-aged men, 20 percent of whom ate no fish.
At the start of the study, the average fish consumption was about two-thirds of an ounce each day with more men eating thin fish than fatty fish.Do you know why different animals or pests (昆虫) have their special colors? Colors in them seem to be used mainly to protect themselves.
Some birds like eating locusts (蝗虫), but birds cannot easily catch them. Why? It is because locusts change their colors together with the change of the colors of crops(庄稼). When crops are green, locusts look green. But as the harvest time comes, locusts change to the same brown color as crops have. Some other pests with different colors from plants are easily found and eaten by others. So they have to hide themselves for lives and appear only at night.
If you study the animal life, you’ll find the main use of coloring is to protect themselves. Bears, lions and other animals move quietly through forests. They cannot be easily seen by hunters (猎人). This
is because they have the colors much like the trees.
Have you ever noticed an even stranger act? A kind of fish in the sea can send out a kind of very black liquid (液体)when it faces danger. While the liquid spreads over (散开), its enemies (敌人)cannot find it. And it immediately swims away. So it has lived up to now though it is not strong at all.
36. From the passage we learn that locusts________.
A. are small animals B. are easily found by birds
C. are dangerous to their enemies D. change their colors to protect themselves
37. How can pests with different colors from plants keep out of danger?
A. They run away quickly.
B. They have the colors much like their enemies.
C. They hide themselves by day and appear at night.
D. They have to move quietly.
38. Bears and lions can keep safe because _________.
A. they have the colors much like the trees B. they move quietly
C. they like brown and gray colorsD. they live in forests
39. Why can the kind of fish live up to now?
A. Because it is very and strong.
B. Because the liquid it sends out can help it escape from its enemies.
C. Because the liquid it sends out can kill its enemies.
D. Because it swims faster than any other fish.
40. Which is the best title for this passage?
A. The Change of Colors for Animals and Pests
B. Colors of Different Animals and Pests
C. The Main Use of Colors for Animals and Pests
D. Some Animals and Pests
Many children use the Internet to get useful knowledge and information, and to relax in their free time. But some of them are not using in 
a good way. Here are some rules to make sure you are safe and have fun on the Internet.
● Make rules for Internet use with your parents. For example, when you can go online, for how long and what activities you can go online.
● Don’t give your password (密码) to anyone else, and never leak out the following information---your real name, home address, age, school, phone number or other personal information.
● Check with your parents before giving out a credit (信用) card number.
● Never send a photo of yourself to someone in e-mail unless your parents say it’s OK.
● Check with your parents before going into a chat room. Different chat rooms have different rules and attract different kinds of people. You and your parents must make sure it’s a right place for you.
● Never agree to meet someone you met on the Internet without your parent’s permission (允许). Never meet anyone you met on line alone.
● Always remember that people online may not be who they say they are. Treat everyone online as strangers.
● If something you see or read online makes you uncomfortable, leave the site. Tell a parent or teacher right away.
● Treat other people as you’d like to be treated. Never use bad language.
● Remember—not everything you read on the Internet is true.
31. If you want a true friend on the Internet , you can ____________ .
A tell the people what your name is . B meet the people on line alone.
C write an e-mail about yourself . D get your parent’s permission.
32. It’s good for children to ________ on the Internet.
A. give password to others B. get useful knowledge and information
C. give out a credit card number D. go into a chat room as they’d like to
33. The underlined phrase “leak out” in the third paragraph may mean “________.”
A. give away B. leave out C. give out D. put away
34. If your parents don’t agree, never ________.
A. read anything on the Internet
B. relax in your free time
C. have a face-to face meeting with anyone you met online
D. treat other people as you’d like to be treated
35. This passage is mainly about “________”.
A. How to use Computers B. Surfing on the Internet
C. Information on the Interne D. Internet Safety Rules
Perhaps the most wonderful building put up in the 19th century was the Crystal Palace（水晶宫）which was built in Hyde Park for the Great Exhibition of 1851. The Crystal Palace was different from all the other buildings in the world, for it was made of iron and glass. It was one of the biggest buildings of all the time and a lot of people from many countries came to see it. Plenty of goods were sent to the exhibition from all parts of the world. There was also a great deal of machinery on show. Though in those days, traveling was not as easy as it is today, steamboats carried thousands of visitors across the Channel from Europe. On arriving in England, they were taken to the Crystal Palace by train. There were six million visitors in all, and the money from the exhibition was used to build museums and colleges. Later, the Crystal Palace was moved to the South London. It remained one of the most famous buildings in the world until it was burnt down in 1936.The Crystal Palace was built up_________.
| A．in the 1950s | B．in the 1990s | C．shortly be fore 1851 |
D．after 1851 |
People from many countries came to the Crystal Palace mainly to______.
| A．buy goods | B．visit an exhibition |
| C．travel | D．enjoy the Crystal Palace itself |
What happened to the Crystal Palace in 1936?
| A．It caught a terrible fire. |
| B．It disappeared suddenly. |
| C．It was moved away to the south of London |
| D．It was rebuilt. |
The writer__________.
| A．thought the Crystal Palace very useful |
| B．thought highly of the Crystal Palace. |
| C．wanted the Crystal Palace to be rebuilt |
| D．was one of the visitors who had visited the Crystal Palace. |
The Crystal Palace was famous to all because__________.
| A．it was the biggest building in the world then. |
| B．it was made of iron and glass. |
| C．so many visitors had been there. |
| D．it was burnt down at last. |
Winter-swimming has become popular in Beijing. Three years ago, few people would go swimming in the icy waters. But now there is a Winter-swimming Enthusiasts’ Club（冬泳爱好者协会）and it has more than 2,000 members. The oldest is 84 years old and the youngest is only 7. The members are from all walks of life. They may be workers, peasants, soldiers, teac
hers, students…
Though it is now the coldest part of the season and the water temperature in the city’s lakes is around 0℃, many winter-swimmers still swim in the icy waters, even when it is snowing. They enjoy themselves in the lake, while the people by the side of the lake are wearing heavy clothes.
Why are so many people interested in winter-swimming? Because winter-swimming can be good for one’s health.
Bei Sha is a good example. He is 69, and he once suffered from（患……病）heart trouble for 26 years. After ten years of winter-swimming he is now in good health. Scientists are now studying the effects of winter-swimming on health. Among the winter-swimmers the oldest man is_______ years older than the youngest one.
| A．91 | B．84 | C．77 | D．7 |
Guess what “The members are from all walks of life” means?
| A．The members do different jobs at different places. |
| B．They come from all parts of Beijing. |
| C．They are persons of different ages. |
| D．They are men and women, old and young. |
The winter-swimmers are able to swim in the icy waters, even on snowy days because .
| A．they are not afraid of coldness |
B．they often swim  in the icy waters |
| C．they know that they can benefit（得益）from it |
| D．winter-swimming can make people healthy |
Winter-swimming has become popular in Beijing because .
| A．more and more people like to swim in Beijing |
| B．it is more interesting than swimming in summer |
| C．winter-swimmers are brave men |
| D．winter-swimming does a lot of good to one’s health |
What’s the best title for this passage?
| A．People in Beijing Like Swimming in Winter |
| B．Winter-swimming—A Craze（狂热）in Beijing |
| C．People Benefit from Winter-swimming |
| D．Winter-swimmers Are Brave Men |
Today, roller skating (滑旱冰) is easy and fun. But many years ago, it wasn’t easy at all. Before 1750, people never tried skating on wheels. That changed because of a man named Joseph Merlin. Merlin’s work was making instruments. In his free time he liked to play the violin. Merlin was a man with many ideas and many dreams. People called him a dreamer.
One day Merlin received an invitation to go to an important party. He was very pleased and a little excited. As the day of the party came near, Merlin began to think. He wanted to find a way to make a wonderful entrance at the party. Merlin had an idea. He thought that he would attract a lot of attention if he could skate into the room.
Merlin tried different ways to make he roll. Finally, he decided to put two wheels under each shoe. These were the first roller skate shoes. Merlin was very proud of them. He dreamed of arriving at the party and skating into the room while playing the violin. He was sure that everyone would be very surprised.
On the night of the party Merlin rolled into the room, playing his violin. Everyone was really surprised to see him. There was just one
problem. Merlin had no way to stop his roller skating. He rolled on, playing the violin. Then, with all eyes on him, Merlin hit into a huge mirror on the wall. The mirror broke into many pieces with a very loud noise. But nobody forgot Merlin’s wonderful entrance after that. The story tells us that people began to enjoy roller-skating ______.
| A．before the year 1750 | B．before the invitation |
| C．because of Joseph Merlin | D．because it was dangerous |
People called Merlin a dreamer because ___________.
| A．he slept and dreamed a lot | B．he was full of different ideas |
| C．he was a talented violinist | D．he always made people’s dreams come true |
___________ made Merlin think of skating on wheels.
| A．Merlin’s work | B．Merlin’s violin |
C．A huge mirror |
D．An important party |
What was Merlin’s problem after he rolled into the room?
| A．He couldn’t stop his roller-skating. |
| B．He couldn’t attract a lot of attention. |
| C．Everyone was surprised at him. |
| D．He couldn’t play the violin while rolling. |
The text is mainly about_________.
| A．a strange man |
| B．an unusual party |
| C．how roller skating began |
| D．how people enjoyed themselves in the 18th century |