题目内容
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Sharks can stop themselves from sinking because ______.
A．their dorsal fins are very valuable
B．they have a swim bladder
C．they have fins for swimming
D．they have skeletons made of cartilage
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Sharks are different from other fish. For example, other fish have skeletons made of hard bones. Sharks have skeletons made of cartilage. In addition, most fish have a special organ called a swim bladder to stop them from sinking but sharks do not. If a shark does not swim constantly, it sinks. Shark babies grow inside eggs. The baby sharks are called pups.
Most sharks eat fish. Some also eat seals and other sharks. Many people are afraid of sharks be cause of their reputation as' man-eaters'. However, there are fewer than one hundred shark attacks on humans in the world each year.
Humans are the sharks' worst enemies. Fishermen kill them because of their valuable dorsal fins. Often, they catch a shark, cut off its fin and throw it back into the sea. If a shark has no fin, it dies because it cannot swim. Scientists believe that humans kill more than one million sharks every year.
Sharks are ______.
A．humans' friends
B．man's enemies
C．the world's largest fish
D．not the same as other fish
Proponents of seat belts on school buses believe that______.
A．the use of seat belts can stop the death and injury
B．seat belts can make children quiet when the bus driver is working
C．seat belts can help children realise the importance of using them in moving vehicles
D．seat belts can teach children lessons about the importance of keeping away from drivers
There are some good ideas to reduce the use of private cars. In 1989, for example, the authorities in Rome began an interesting experiment: passengers on the city buses did not have to pay for their tickets.
In Stockholm there was another experiment: people paid very little for a season ticket to travel on any bus, trolley bus, train or tram in all the city.
In many cities now some streets are closed to vehicles, and pedestrians are safe there.
In London there is another experiment: part of the street is for buses only, so the buses can travel fast. There are no cars or taxies in front of them.
What the writer worries about in a big city is ______.
A．the number of traffic lights
B．the shortage of buses
C．the lack of motorways
D．the traffic congestion
The fishes are about 1.5 meters long and look like carps(鲤鱼). There will be a detector intheir bodies. They canfind the sources of pollutionin the water, and then the robot fisheswilleat part of it. Unlike other robots, they don’t need to be controlled by people faraway. Therobots all have an eight-hour battery. They can “swim” in the sea freely and send backinformation to people on the beach. After their batteries die, they will return by themselves.
There are five robot fishes altogether now.Each costs about 29,000 dollars. They are partof a three-year project between engineering company BMT Group and Essex University insoutheastern England.
“We designed the fishes creatively. We hopethe robot fishes can find the changes in the seawater and report back the information,” said Professor Huof Essex University. His team isdeveloping the fishes.
What will the robots do if they find the pollution in the water？
A.They will eat part of it.
B.They will stop working.
C.They will tell people where they are.
D.They will take it out to the beach.
How longcan a battery in their bodies work each time？A.For five hours
B.For eight hours.
C.For twelve hours.
D.For one day.
How much do the five robot fishes cost altogether？ A.$14, 500.
B.$29,000.
C.$145,000.
D.$1,450, 000.
Which of the following is TRUE？ The robot fishes ____.A.can eat anything in the water
B.need to be controlled by people
C.are 1.5 meters long andthey look like sharks
D.cango back to the beach when the batteries run down
What can we learn from the passage？ The robot fishes____.A.have worked around the world
B.can’t take out the trash in the water
C.will helppeopledetect the pollution in the water
D.help to find other fishes in the rivers, lakes and seas
请帮忙给出每个问题的正确答案和分析，谢谢！
People can communicate in many other ways. An artist can use his drawings to tell about beautiful mountains, about the blue sea and many other things. Books are written to tell about all the things in the world and also about people and their ideas.
Books, newspapers, TV, radio and films can all help us to communicate with others. They all help us to know what is going on in the world, and what other people are thinking about.
People can communicate ______.
A．with words only
B．in many different ways
C．in letters and with drawings
D．with smiles, tears and hands
阅读下面的句子，根据文章内容进行判断，正确写“T”，错误写“F”。
Stop Yelling At Your Kids
Parenting is hard. If you’re a parent, I’m sure that I don’t need to tell you that our job is a tough one. When you're managing children, it can be difficult to remember that they are still learning. If you find yourself yelling at your kids more often than you want to, here are some ways that can help you reduce the yelling. I’ve been working on this for the past few months and I have to say,it’s been amazing for both the kids and me.
If you are having an argument with your child, you need to make sure you both take the time to really listen. It gives both of you time to think and really listen to each other, which is important. Kids are more likely to listen to you if you listen to them!
One of your biggest struggles is to remind yourself of appropriate expectations. You can’t expect that your youngest acts as responsibly as your oldest. You should lower what you expect -taking into consideration things like their age - it can make a big difference. You should do your best to take a moment before yelling and take in a deep breath. It makes a world of difference for you. Instead of yelling, you’d better whisper. It can also help diffuse any situation by making things quieter, not louder. Besides, the more time you spend with your kids, the better you’ll get at communicating with them. You’re both more likely to understand each other.
If your children aren’t listening or it seems they only don’t listen to you, you don’t take it personally. You should remind yourself that your kids are still learning and they’re not going to be perfect.
()21. As a parent, you may know that parenting is an easy job.
()22. Listening to each other is a good way to stop argument between parents and their kids.
()23. Usually younger kids behave less responsibly than elder children.
()24. Parents should lower their expectation for their kids.
()25. Both yelling and whispering can help make things quieter.
Encourage free drawing rather than coloring books. Coloring books stop the possibility of self-expression. A child may just enjoy colorful pictures and never learn how to express himself. As an art teacher says，“Children have a very powerful instinct to draw freely and roughly. Such practice makes them learn language easily. ”In fact，a child expresses himself in rough drawing. This is the beginning of literacy and creativity. Also，parents should not teach their kids“how”to draw and they should not make their kids draw realistic pictures to entertain themselves. Experience tells us that such teaching from the parents will discourage children，making them think they can't do it the “right”way.
Competition and rewards should also be avoided in the process of artistic creation. A child's natural instinct to create will disappear if he or she thinks about prize while drawing.
Parents should be role models for their kids. They should not say things like，“I can't draw a straight line. ”Instead，they should learn to say，“I love to create. ”This teaches children that the process of creation is more important than the product. If children see their parents drawing，cooking or building creatively，they will do the same.
Buy a notebook for your child to use every day. This can be a journal for making up stories，writing ideas and drawing pictures. Even the youngest child can use it to draw freely and roughly，expressing himself.
Take your child to places that promote ideas and creativity. Art museums，science centers，libraries and children's museums all are great places to see other people's creativity. That will inspire children to make their own creations and inventions.
Give children choices and free time. Some of the best ideas come from daydreaming and imagining.
In short，parents should allow their kids to have the freedom to invent for themselves. That means not always teaching and commanding.
To develop their artistic creativity，children should be encouraged to______.
A．draw freely and roughly
B．learn to draw realistic pictures
C．know how to draw before they start
D．learn to draw good pictures to get prizes
What Is Death？
People in the past did not question the difference between life and death. They could see that a person died when his heart stopped beating. People have learned, however, that the body does not die immediately when the heart stops beating. They discovered that we remain alive as long as our brain remains active. Today the difference between life and death is not as easy to see as in the past. Modern medical devices can keep the heart beating and the lungs breathing long after the brain stops. But is this life？
This question has caused much debate among citizens in the United States. Many of them want a law that says a person is dead when the brain dies. A person should be considered dead when brain waves stop even if machines can keep the body alive. Such a law would permit doctors to speed removal (切除) of undiseased (没病的) organs for transplant (移植) operations.
The brain is made of thousands of millions of nerve cells. These cells send and receive millions of chemical and electrical messages every day. In this way the brain controls the other body activities. Nerve-cell experts say it is usually easy to tell when the brain has died. They put small electrodes (电极) on a person's skull (头骨) to measure the electrical signals that pass in and out of the brain. These brain waves are recorded on a television screen or on paper. The waves move up and down every time the brain receives messages from the nerve cells. The brain is dead when the waves stop moving.
Although there are people who oppose the idea of a law on brain block for various reasons, the idea of brain wave activity as a test of death is slowly being accepted.
第 31 题 People in the past held that the difference between life and death
A．did not exist.
B．was easy to tell.
C．lay in the brain.
D．was open to debate.
The study began in 1948 to investigate the causes of heart disease. Since then, more tests have been added, including measures of loneliness and depression.
The new findings involved more than 5,000 people in the second generation of the Framingham Heart Study. The researchers examined friendship histories and reports of loneliness. The results established a pattern that spread as people reported fewer close friends.
For example, loneliness can affect relationships between next-door neighbors. The loneliness spreads as neighbors who were close friends now spend less time together. The study also found that loneliness spreads more easily among women than men.
Researchers from the University of Chicago, Harvard and the University of California, San Diego, did the study. The findings appeared last month in the Journal of Personality and Social Psychology.
The average person is said to experience feelings of loneliness about 48 days a year. The study found that having a lonely friend can add about 17 days. But every additional friend can decrease loneliness by about 5%, or two and a half days.
Lonely people become less and less trusting of others. This makes it more and more difficult for them to make friends—and more likely that society will reject them.
John Cacioppo at the University of Chicago led the study. He says it is important to recognize and deal with loneliness. He says people who have been pushed to the edges of society should receive help to repair their social networks.
The aim should be to aggressively create what he calls a "protective barrier" against loneliness. This barrier, he says, can keep the whole network from coming apart.
Besides loneliness, which of the following can also spread among people？
A．Friendship.
B．Happiness.
C．Depression.
D．Smoking.
