阅读理解(每小题2分,满分10分)
Instead of hitting the beach, fourteen high school students traded swimming suits for lab coats last summer and turned their attention to scientific experiments.
The High School Research Program offers high school students guidance with researchers in Texas A&M’s College of Agriculture and Life Sciences.Jennifer Funkhouser, academic adviser for the Department of Rangeland Ecology and Management, directs this four-week summer program designed to increase understanding of research and its career potential (潜能).
Several considerations go into selecting students, including grades, school involvement and interest in science and agriculture.And many students come from poorer school districts, Funkhouser says.“This is their chance to learn techniques and do experiments they never would have a chance to do in high school.”
Warner Ervin of Houston is interested in animal science and learned how to tell male from female mosquitoes (蚊子).His adviser, Craig Coates, studies the genes(基因) of mosquitoes that allow them to fight against malaria and yellow fever.Coates thought this experience would be fun and helpful to the high school students.
The agricultural research at A&M differs from stereotypes(模式化,老一套).It’s “molecular (分子) science on the cutting edge,” Funkhouser says.The program broadened students’ knowledge.Victor Garcia of Rio Grande City hopes to become a biology teacher and says he learned a lot about chemistry from the program.
At the end of the program, the students presented papers on their research.They’re also paid $ 600 for their work—another way this program differs from others, which often charge a fee.
Fourteen students got paid to learn that science is fun, that agriculture is a lot more than milking and plowing and that research can open many doors.
.The research program is mainly designed for ______.
A.high school advisers from Houston |
B.college students majoring in agriculture |
C.high school students from different places |
D.researchers at the College of Agriculture and Life Science |
.It can be inferred from the text that the students in poorer areas ____.
A.had little chance to go to college |
B.could often take part in the program |
C.found the program useful to their future |
D.showed much interest in their high school experiments |
.When the program was over, the students ______.
A.entered that college |
B.wrote research reports |
C.paid for their research |
D.found way to make money |
.The underlined expression “on the cutting edge” in paragraph 5 means “on the most _____ position.”
A.important | B.favourable | C.astonishing | D.advanced |
.What would be the best title for the text?
A.A Program for Agricultural Science Students |
B.A Program for Animal Science Students |
C.A Program for Medical Science Lovers |
D.A Program for Future Science Lovers |
You have heard of Webster Toys. Websters have made good safe and interesting toys for more than a hundred years. Now we sell them, and children play with them, in countries from New Zealand to Norway(挪威), and from Japan to Brazil(巴西). We are looking for someone to sell our toys in the Far East. He(She) will be between the ages of thirty and forty. He will already have some years of selling in world markets behind him. He will speak good English and at least one other language of the Far East.
The person we are looking for will live in Singapore, and work in our office there but he will travel for up to six months in other countries in one year. He will know the Far East well. He should know how to sell in established(建立) markets and where to find new ones. He will know to make more money than ever, for himself and for Webster Toys.
Websters want someone who can stand on his own feet. If you think you are the person we are looking for, write to Mr.J.Sloman at our office. Webster Toys Company Church Mill Watford.
. What are Webster Toys?
A.An old kind of toys. |
B.Factories where good, safe and interesting toys are made. |
C.People who are famous for making toys for children. |
D.A company that has been making and selling toys. |
. We can most probably read the text _______.
A.in a book | B.in a dictionary | C.in a novel | D.in a newspaper |
. Which of the following statements is TRUE?
A.If you are thirty years old, you can apply for the position. |
B.If you live in Singaore, you can get the position. |
C.If you speak good English , you can get the position. |
D.The company is looking for some salesmen or saleswomen. |
Butter is bad for you—so is margarine(人造黄油).Coffee raises blood pressure, but may protect against cancer.Alcohol is okay, but only if it's wine.The confusing studies on what is safe to eat and drink are enough to make it impossible for anyone to understand what "good food" is.
Take the margarine-butter debate for example.Studies that linked fat—found mostly in animal products such as meat and butter—with cancer and heart disease sent millions rushing to buy margarine.But then another study found that people who ate a lot of margarine also had high levels of heart disease.For those who have a firm faith in science, this seems to be the end of the world.
But many doctors point out that their advice has never been conflicting.For years, and in various countries, they have recommended eating less fat.
People in western countries such as Britain and the United States get about 40 percent of their calories from fat.Doctors say this should be around 30 or even 25 percent,
"We must try to reduce total fat," said Dr.Robert Richardson of the University of Edinburgh, who has been studying the effects of fat on human health for years.
"We need to go to more such food as bread, in particular brown bread, and more fruit and vegetables."
Fresh produce may not be so safe, either.Last month the British Government advised consumers to peel their pears before eating, while many Americans briefly avoided apples because of fears over an insect killing chemical.
But Dr.Arnold, a British scientist, said any risk of such poisoning would be outweighed by the costs of not eating plant foods.
"On balance, if you were to put both risks against each other, the advice has to be eating as much fruit and vegetable daily as possible," she said.
In general, doctors conclude, variety truly is the best policy."The general advice is pretty much the same advice that doctors have been talking about for a long time—a varied diet, a mixture of foods and not too much of any one," Arnold said.
In which section of the magazine are you most likely to find this passage?
A.Arts and Culture | B.Entertainment |
C.Nature | D.Health |
The British Government advised consumers to peel their pears before eating because ________.
A.it found that there were insects on the pears |
B.it wanted consumers to avoid insect, killing chemicals |
C.the skin of pears was found to be bad for people's health |
D.it was a bad habit not to peel them |
The underlined word "outweigh" (Para. 8) means " __________."
A.to be heavier than usual or allowed | B.to be more dangerous than |
C.to be greater in value or importance than | D.to be considered less important than |
What can we infer from the passage?
A.Many doctors say that their advice has never been conflicting. |
B.Science provides answers to all our questions. |
C.We should peel our pears before eating. |
D.We should eat plant foods despite the risk of poisoning. |
For better or worse, multiple marriages aren't just for actress Elizabeth Taylor (famous for her eight marriages) anymore.
More Americans than ever are tying the knot for the third time or more.
Lynn Y. Naugle, a 53-yeap-old family therapist in New Orleans, says that people's personal needs and desires simply change as their life evolves.
"What functions well in the first part of our lives may not function well in the second or third part of our lives," she explains.The first marriage lasted 21 years, her second marriage five years.Two years ago, she wed for a third time, and she describes this union as an "extremely easy marriage".
Today, at an estimated one of seven weddings, the bride, the groom or both are making that trip down the aisle for at least the third time.That's twice as many as a generation ago, according to the US National Centre for Health Statistics.
In part, the sudden change in multiple marriages is a side effect of the 1970s divorce increase that has supplied an ever expanding pool of divorced singles.Even the simple fact that people are living longer has opened the door to marrying more often.No fault divorce laws (meaning no one is blamed for the failure of the marriage), and cultural changes have also meant there's less pressure than in past generations to stay in a joyless or abusive marriage.
While a single divorce didn't block either Ronald Reagan or Bob Dole from seeking the most highly demanding job in America—the US presidency—modern society still raises an; eyebrow at more than one
marriage mistake.
Indeed, there are signs that attitudes are changing."It's coming out of the closet or becoming more accepted," says Glenda Riley, who wrote a book on the history of divorce in the US."There's still embarrassment on the personal level, while there is growing acceptance on the public level for three or more marriages in a lifetime."
There is no guarantee, of course, that the third time is the best.To the contrary, second and third marriages run an equal or greater risk of divorce than first marriages, which today are given 4 out of 10 odds of failing, and they tend to end more quickly.Divorce statistics show that failed second marriages typically end two years sooner than first marriages, lasting six years on average rather than eight.That leaves some doubly divorced people open for a third try at a relatively young age.
What does the underlined phrase "tying the knot" (Para.2) mean?
A.Getting married. | B.Getting engaged. |
C.Having babies. | D.Attending funerals, |
What is NOT the reason for the increase in multiple marriages according to the passage?
A.People are healthier and enjoy a longer life than ever before. |
B.Many people have become single after a divorce boom in the past years. |
C.There is no divorce law restricting people to getting divorced. |
D.People have less pressure to leave a joyless marriage. |
What can we learn from the seventh paragraph?
A.Ronald Reagan and Bob Dole failed in seeking the job (the US presidency) because they were divorced. |
B.Ronald Reagan and Bob Dole succeeded in seeking the job (the US presidency) because they were not divorced. |
C.Modern society accepts multiple marriages completely. |
D.There is still prejudice against multiple marriages in modern society. |
Which of the statement is WRONG?
A.Acceptance to multiple marriages is different on personal level and public level. |
B.Because second marriages end sooner than first ones, people get married for the third time at a relatively young age. |
C.People learn from experience so that a second or third marriage is more stable |
D.The first marriage lasts eight year on average. |
Trees should only be pruned (修剪) when there is a good and clear reason for doing so and , the number of such reasons is small. Pruning involves the cutting away of overgrown and unwanted branches, and the inexperienced gardener can be encouraged by the thought that more damage results from doing it unnecessarily than from leaving the tree to grow in its own way.
First, pruning may be done to make sure that trees have desired shape or size. The object may be to get a tree of the right height, and at the same time to help the growth of small side branches, which will thicken its appearance or give it a special shape. Secondly, pruning may be done to make the tree healthier. You may cut out diseased or dead wood, or branches that are rubbing against each other and thus cause wounds. The health of a tree may be encouraged by removing branches that are blocking up the center and so preventing the free movement of air.
One result of pruning is that an open wound is left on the tree and this provides an easy entry for disease , but it is a wound that will heal (愈合). Often there is a race between the healing and the disease as to whether the tree will live or die, so that there is a period when the tree is at risk. It should be the aim of every gardener to reduce that risk of death as far as possible. It is important to make the area, which has been pruned, smooth and clean, for healing will be slowed down by roughness. You should allow the cut surface to dry for a few hours and then paint it with one of the materials available from garden shops produced especially for this purpose. Pruning is usually done in winter , for then you can see the shape of the tree clearly without interference (妨碍) from the leaves and also it is very unlikely that the cuts you make will bleed. If this does happen, it is, of course, impossible to paint them properly .
.Why should pruning be done?
A.To make the tree grow taller. | B.To improve the shape of the tree. |
C.to get rid of the small ranches . | D.To make the small branches thicker. |
.Trees become unhealthy if the gardener__________.
A.giving a tree a special shape and a definite height |
B.removing small side branches and making a tree look less thick |
C.allowing too many branches to grow in the middle |
D.having a tree surrounded by many other trees |
.Why is a special material painted on the tree?
A.To help a wound to dry. | B.to cover a rough surface. |
C.To make a wound smooth. | D.To prevent disease entering a wound. |
.A good gardener prunes a tree _________ .
A.several times throughout the year | B.as quickly as possible |
C.occasionally when necessary | D.regularly every winter |
.What was the author’s purpose when writing this passage?
A.To discuss different methods of pruning. |
B.To introduce some common knowledge of pruning. |
C.To explain how trees develop disease. |
D.To give practical instruction for pruning a tree. |
That “Monday morning feeling” could be a crushing pain in the chest which leaves you sweating and gasping for breath. Recent research from Germany and Italy shows that heart attacks are more common on Monday mornings and doctors blame the stress of returning to work after the weekend break.
The risk of having a heart attack on any given day should be one in seven, but a six-year study helped by researchers at the Free University of Berlin of more than 2,600 Germans showed that the average person had a 20 percent higher chance of having a heart attack on a Monday than on any other day.
Working Germans are particularly not protected against attack, with a 33 percent higher risk at the beginning of the working week. Non-workers, by comparison, appear to be no more at risk on a Monday than any other day.
A study of 11,000 Italians proved 8 am on a Monday morning as the most stressful time for the heart, and both studies showed that Sunday is the least stressful day, with fewer heart attacks in both countries.
The findings could lead to a better understanding of what is the immediate cause of heart attacks, according to Dr Stefan Willich of the Free University. “We know a lot about long-term risk factors such as smoking and cholesterol(胆固醇)but we don’t know what actually causes heart attacks, so we can’t give clear advice on how to prevent them,” he said.
Monday mornings have a double helping of stress for the working body as it makes a rapid change from sleep to activity, and from the relaxing weekend to the pressures of work.
“When people get up, their blood pressure and heart rate go up and there are hormonal(内分泌)changes in their bodies,” Willich explained. “All these things can have an unfavourable effect in the blood system and increase the risk of a clot(血凝块)in the arteries(动脉)which will cause a heart attack.”
“When people return to work after a weekend off, the pace of their life changes. They have a higher workload, more stress, more anger and more physical activity,” said Willich.
.Monday morning feeling, as this passage shows, .
A.is not so serious as people thought |
B.is harmful to working people in Germany and Italy |
C.is the first killer in Germany and Italy. |
D.is created by researchers in Germany and Italy |
.To protect people from suffering from heart attack, doctors have paid much attention to .
A.people’s working time | B.people’s living place |
C.people’s diet and lifestyle | D.people’s nationalities |
.It can be learned from this passage that heart attack has nothing to do with .
A.blood pressure | B.heart rate | C.hormonal changes | D.blood group |
.If the researchers give us some advice to avoid Monday morning feeling, what might it be?
A.Stop working on Monday | B.Create a pleasant working environment |
C.Get up late on Monday morning | D.Go to work with a doctor |
.Which of the following is true according to the passage?
A.The risk of having heart attacks on Monday mornings is the same as on any other day of the week to non-workers |
B.33% of the Germans have heart diseases, therefore heart attacks are more common in Germany than in any other country. |
C.20%of the Italians appear to have higher possibility of having heart attacks. |
D.Non-smokers are more likely to have heart attacks on Sundays. |
What's your dream vacation? Watching wildlife in Kenya? Boating down the Amazon? Sunbathing in Malaysia? New chances are opening up all the time to explore the world. So we visit travel agents, compare packages and prices , and pay our money.
We know what our vacation costs us. But do we know what it might cost someone else? It's true that many poorer countries now depend on tourism for foreign income. Unfortunately, though, tourism often harms the local people more than it helps them.
It might cost their homes and lands. In Myanmar, 5,200 people were forced to leave their homes among the pagodas(佛塔)in Bagan so that tourists could visit the pagodas.
Tourism might also cost the local people their livelihood and dignity. Local workers often find only menial(卑微的)jobs in the tourist industry. And most of the profits do not help the local economy. Instead, profits return to the tour operators in wealthier countries, When the Maasai people in Tanzania were driven from their lands, some moved to city slums. Others now make a little money selling souvenirs or posing for photos.
Problems like these were observed more than 20 years ago. But now some non-government organizations, tour operators and local governments are working together to begin correcting them. Tourists, too, are putting on the pressure.
The result is responsible tourism, or “ethical tourism.” Ethical tourism has people at its heart. New international agreements and codes of conduct can help protect the people's lands, homes, economies and cultures. The beginnings are small, though, and the problems are complex.
But take heart. The good news is that everyone, including us, can play a part to help the local people in the places we visit. Tour operators and companies can help by making sure that local people work in good conditions and earn reasonable wages.
They can make it a point to use only locally owned hotel, restaurants and guide services. They can share profits fairly to help the local economy. And they can involve the local people in planning and managing tourism.
What can tourists do? First, we can ask tour companies to provide information about the conditions of local citizens. We can then make our choices and tell them why. And while we're abroad, we can:
Buy local foods and products, not imported ones.
Pay a fair price for goods and services and not bargain for the cheapest price.
Avoid flaunting wealth.
Ask before taking photographs of people.
They are not just part of the landscape!
Let's enjoy our vacation and make sure others do, too.
What is probably the best title for the article?
A.Tourism Causes Bad Effects. | B.Tourism Calls for Good Behavior. |
C.Vacations Bring a Lot of Fun. | D.Vacations Cost More Than You Think |
Which of the following is not mentioned?
A.Local people were well paid to leave their lands. |
B.Tourists may stay in hotels opened by local people. |
C.Local people are mainly provided with low-paying work. |
D.Tourists could bargain with local people for a reasonable price. |
The underlined phrase "take heart" means" ".
A.pay attention | B.take care | C.cheer up | D.calm down |
According to the passage, the writer thinks .
A.tourism is not a promising industry |
B.dream vacations should be spent abroad |
C.the problems caused by tourism are easy to settle |
D.tourists should respect local customs and culture |
There is a boy called Bill in my gym class who has unbearably yellow teeth that almost make everyone feel unpleasant.Recently another boy told Bill that he should "go Ajax" his teeth.Bill was crushed.If the other boy had been thinking, he would have realized that there is a better way to handle such a situation.He could have dealt with it with tact.He could have showed this hurtful truth in a more careful, sensitive way—that's "tact".
If a person isn't sensitive to another's feelings, there is no way he or she can be tactful.Yesterday, my 5-year-old brother proudly announced that he had cleaned the screen on our television set.Unfortunately, he used furniture polish, which produced an oily film on the television screen.My mother smiled arid thanked him for his efforts—and then showed how to clean the screen properly.Her sensitivity enables my brother to keep his self-respect.Yet, sensitivity alone does not make tact.
"Tactfulness" also requires "truthfulness".Doctors, for example must be truthful.If a patient has just been disabled in an accident, a tactful doctor will tell the truth—but express it with sensitivity.The doctor may try to give the patient hope by telling them curing techniques under study or about advanced equipment now available.Doctors must use tact with patients' relatives as well.Instead of bluntly saying, "Your husband is disabled," a doctor might say, "I'm sorry, but your husband has lost feeling in his legs and..."
Tact should not be confused with trickery.Trickery occurs when a nurse is about to give a patient an injection(注射) and says, "This won't hurt a bit." Instead of trickery, the nurse might guarantee the patient that the discomfort of the injection is a small thing compared to the benefits of it.It would also be thoughtful for the nurse to tell the patients about some of these benefits.
Tact is a wonderful skill to have, and tactful people are usually admired and respected.Without tact our society would become an intolerable place to live in.
The underlined word "crushed" in the first paragraph probably means____.
A.surprised | B.cheated | C.regretful | D.painful |
According to the author, his mother's praise for the brother is ____.
A.sensitive and tactful | B.sensitive but not tactful enough |
C.truthful but not tactful enough | D.sensitive but trickish |
Which of the following shows the structure of the passage?
(The numbers stand for the paragraphs)
A single night of taking the drug Ecstasy (摇头丸) can cause serious brain damage and speed up the start of Parkinson’s disease, scientists say. Just two or three Ecstasy tablets can permanently destroy brain cells that affect movement and reasoning, according to American research that links the drug to Parkinson’s for the first time.
A study by a team at Johns Hopkins University in Baltimore, Maryland, involving squirrel monkeys and baboons (狒狒) found that both species suffered permanent damage to key cells, which are lost in Parkinson’s, after receiving three low doses(剂量)of Ecstasy at three-hour periods.
The study is particularly important because baboons are one of the best animal models for the human brain. George Ricaurte, who led the research, said that the widespread abuse of drug might have caused severe damage. “The most troubling result is that young adults using Ecstasy may be increasing their risk of developing Parkinsonism as they get older.”
Alan Leshner, a former director of the US National Institute on Drug Abuse, said, “This study emphasizes the multi-aspect damage that Ecstasy causes to users. We’ve long known that repeated use damages brain cells. But this study shows that even very occasional use can have long-lasting effects on many different brain systems. It sends an important message to young people: don’t experiment with your own brain.”
Janet Betts, a mother whose teenage daughter Leah died after a single Ecstasy tablet in 1995, said, “This comes as no surprise. But people can’t see the effects at first, and they say it won’t happen to them. We’ll see the symptoms later, just as we have with smoking.”
The article is intended to ______.
A.explain the bad effects of drugs on people’s health |
B.warn young people of the risk of taking the drug Ecstasy |
C.persuade people out of such bad habits as smoking and using drugs |
D.tell us the links between the drug Ecstasy and Parkinson’s disease |
We know from the passage that a low dose of Ecstasy ______.
A.won’t cause serious brain damage |
B.can permanently destroy one’s brain cells |
C.will result in immediate symptoms |
D.may bring on Parkinson’s at once |
Why are squirrel monkeys and baboons involved in the experiments?
A.Because their brain is similar to human being’s. |
B.Because these animals usually take drugs. |
C.Because these animals will soon get well after the experiment. |
D.Because there is a model in the animals’ brains. |
The underlined word “This” in the last paragraph probably means that ______.
A.Leah died after a single Ecstasy tablet in 1995 |
B.taking drug has the same symptoms as smoking |
C.occasional use of the drug can have long-lasting effects on the brain systems |
D.people have long known that repeated use of the drug damages brain cells |
Knowing the best way to study will help you to be a better student. By using your time properly, you can do your homework more quickly. Learning to study is not difficult.
The first thing to remember is that you must be willing to learn. It doesn’t mean that you must always like the subject. It does mean, however, that you must be wil1ing to do whatever is necessary to learn. Try to understand why it is important and how it will help you now and later to do and learn other things. Knowing mathematics facts will be useful in your whole life. Knowing how to spell makes any kind of writing easier. Sometimes the subject that you think is going to be uninteresting will be exciting when you begin to work at it and understand it more clearly. Learning things can be fun if you are willing to work with them.
Here’s some advice for you: have a certain time each day and a quiet place with good lighting for study, so that you can concentrate on your study without interruptions(中断); have everything ready before you sit down to study, a dictionary, paper, a pen and books; be sure you understand what you should learn before you start; read carefully and pay special attention to the most important things; when memorizing, first find out the main parts and then recite the whole thing; check your homework after you finish it; never forget the importance of review and preview.
Don’t try to spend a lot of time researching learning methods. There are many students who know many good learning methods but don’t study well. They forget that the most useful learning method is to study hard.
The main goal of the article is______
A.to prove that learning is not difficult |
B.to make the readers be interested in study |
C.to tell the importance of self teaching |
D.to tell the students how to study well |
The first thing to remember in studying is that
A.you must like the subject |
B.you must follow the teacher |
C.you must enjoy learning |
D.you must study hard |
We learn things because______
A.our parents want us to learn |
B.every student learns at school |
C.we may use these things in the future |
D.we like the subjects |
Which of the following is NOT the advice given in the article?
A.To put a pen, paper and books beside you before study. |
B.To study at any possible time and place. |
C.To review and preview |
D.To pay attention to the most important things. |
Which of the following statements is true?
A.The more learning methods we have, the better we will study. |
B.Finding the best learning method is the most important in learning. |
C.If you don’t work hard, though you have a good learning method, you can’t be good at study. |
D.Once we have mastered a good learning method, we can improve our study greatly. |
A well-dressed man entered a famous jewelry shop. He explained that he wished to buy a pearl for his wife’s birthday. The price didn’t matter. Since business had been very good for him that year. After examining a nice black one that cost $5000, he paid for the pearl in cash, shook hands with the jeweler, and left.
A few days later the man returned and said that his wife liked the pearl so much that she wanted another one just like it. It had to be exactly the same size and quality, as she wanted a pair of earrings made, “Can you give me any advice on how to get such a pearl?” said the man. The jeweler regretfully replied, “I would say it’s exactly impossible to find one exactly like that pearl.”
The rich man insisted that the jeweler advertise in the newspapers, offering $ 25,000 for the matching pearl. Many people answered the advertisement but nobody had a pearl that was just right.
Just when the jeweler had given up hope, a little old lady came into his store. To his great surprise, she pulled the perfect pearl from her purse. “I don’t like to part with it,” she said sadly, “I inherited it from my mother, and my mother inherited it from hers. But I really need the money.”
The jeweler was quick to pay her before she changed her mind. Then he called the rich man’s hotel to tell him the good news. The man, however, was nowhere to be found.
The man said he wanted to buy a pearl for ______.
A. his wife B. his mother-in–law
C. his own mother D. no one
57. He paid $ 5,000 for the black pearl without bargaining because ______.
A. he was very rich B. he wanted to make the jeweler believe him
C. he was anxious to get it D. his business had been successful
He told the jeweler to get him another pearl that must be ______.
A.exactly the same size as the black one |
B.exactly the same quality as the black one |
C.worth no more than $ 25,000 |
D.exactly as big and nice as the black one |
Many people answered the advertisement because they wanted _______.
A.to see the perfect pearl |
B.to buy some beautiful pearls too |
C.to get in touch with the rich man |
D.to sell their own pearl at a high price |
The jeweler couldn’t find the man anywhere because ______.
A.he died suddenly. |
B.He happened to be out |
C.He got $ 20,000 by cheating and had run away with the money. |
D.He wouldn’t show up until the jeweler called him a second time. |
Batteries can power anything from small sensors to large systems. While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves. University of Missouri(MU) researchers are developing a nuclear energy source that is smaller, lighter and more efficient.
“To provide enough power, we need certain methods with high energy density(密度)”,said Jae Kwon, assistant professor of electrical and computer engineering at MU. “The radioisotope(放射性同位素) battery can provide power density that is much higher than chemical batteries.”
Kwon and his research team have been working on building a small nuclear battery, presently the size and thickness of a penny, intended to power various micro/nanoelectromechanreal systems (M/NEMS). Although nuclear batteries can cause concerns, Kwon said they are safe.
“People hear the word ‘nuclear’ and think of something very dangerous,” he said, “However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems.”
His new idea is not only in the battery’s size, but also in its semiconductor(半导体). Kwon’s battery uses a liquid semiconductor rather than a solid semiconductor.
“The key part of using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure(晶体结构) of the solid semiconductor,” Kwon said, “By using a liquid semiconductor, we believe we can minimize that problem.”
Together with J. David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery. In the future, they hope to increase the battery’s power, shrink its size and try with various other materials. Kwon said that battery could be thinner than the thickness of human hair.
Which of the following is true of Jae Kwon?
A.He teaches chemistry at MU. |
B.He developed a chemical battery. |
C.He is working on a nuclear energy source. |
D.He made a breakthrough in computer engineering. |
Jae Kwon gave examples in Paragraph 4_________.
A.to show chemical batteries are widely applied. |
B.to introduce nuclear batteries can be safely used. |
C.to describe a nuclear-powered system. |
D.to introduce various energy sources. |
Liquid semiconductor is used to _________.
A.get rid of the radioactive waste | B.test the power of nuclear batteries. |
C.decrease the size of nuclear batteries | D.reduce the damage to lattice structure. |
According to Jae Kwon, his nuclear battery _______.
A.uses a solid semiconductor | B.will soon replace the present ones. |
C.could be extremely thin | D.has passed the final test. |
The text is most probably a ________.
A.science news report | B.book review |
C.newspaper ad | D.science fiction story |
How to improve our life? Many people think that they have to accept whatever life throws at them. They'll say, "This is my destiny(命运).I cannot change it."
Of course not! You don't have to suffer needlessly. Your life depends on you, not on any other external(外部的)factor.
I know a woman who says she just accepts what life gives her because she has done everything she can to improve it. Guess what her lifestyle is? She wakes up in the morning, goes to work, comes back home, relaxes, chats with people, watches TV, and then goes to sleep. Next day, the same routine cycle follows.
Huh! Is this what she calls "doing her best"? She believes she has tried her best and just accepts it in her heart that this is the life that has been intended for her and that her luck can only change if God wills it. She hasn't realized that we have to do our share of making the effort to live the life of our dreams.
Remember that you harvest what you sow. You have to get off the sofa, get your eyes off the TV screen, get your hands off the phone(unless it contributes to your success),and get your mind and body to work! Don't expect your luck to change, unless you do something about it. If something goes wrong, don't just regard it as a temporary setback; instead, learn your lesson, make the most of the situation, and do something to solve the problem. It's not enough to think positively; you also have to act positively.
If someone's life is in trouble, do you just hope and pray that things will turn out fine? Of course not! You get to do anything you can to save the person. So it is with your own life. It is not enough to hope for the best, but you have to do your best. In other words, don't just stand(or sit)there, do something to improve your life.
According to the woman mentioned in Para. 3, her life_________________.
A.doesn't need improving | B.couldn't be improved |
C.will be better some day | D.will be worse in the future |
What does the author think of the woman's life?
A.Positive | B.Passive | C.Colorful | D.Disturbing |
Which of the following statements is the author's opinion?
A.Your temporary problem is not discouraging. |
B.Your luck can be changed by your own efforts. |
C.You can only achieve success when God wills it. |
D.You should treat yourself in the way you treat friends. |
In Para. 5, the author emphasized the importance of _______________.
A.positive thinking | B.positive action |
C.hope for the best | D.intention to succeed |
The text is mainly written to advise you to _________________.
A.understand yourself | B.improve your life |
C.believe in yourself | D.change your normal way |
The Internet has opened up a whole new on-line world for us to meet, chat (聊天) and go where we’ve never been before.
But just as in face-to-face communication, there are some basic rules of behavior that should be followed when online. The basic rule is simple: treat others in the same way that you would want to be treated. Imagine how you’d feel if you were in the other person’s shoes.
For anything you’re going to send, ask yourself: “Would I say this in front of the person?” If the answer is no, rewrite and reread. Repeat the process till you feel sure that you’d feel comfortable saying the words to the person’s face.
If someone in the chat room is impolite to you, your feeling is to fight back in the same manner. But try not to do so. You should either ignore (忽略) the person, or use your chat software (软件) to stop their messages. If it was caused by a disagreement with another member, try to fix the situation by politely discussing it. Remember to respect the beliefs and opinions of others in the chat room.
Everyone was new to the network once. Offer advice when asked by newcomers, as they may not be sure what to do or how to communicate. When someone makes a mistake whether it’s a stupid question or an unnecessarily long answer, be kind about it. If it’s a small mistake, you may not need to say anything. Even if you feel strongly about it, think twice before saying anything. Having good manners yourself doesn’t give you the right to correct everyone else.
If you do decide to tell someone about a mistake, point it out politely. At the same time, if you find you are wrong, be sure to correct yourself and apologize to those who you have offended (冒犯).
It is not polite to ask others personal questions such as their age, sex, and families. Unless you know the person very well, and you are both comfortable with sharing personal information, don’t ask such questions.
. When you send short messages to a person, you must .
A.make sure that they don’t do harm to others | B.read them again and again |
C.say something good to hear | D.repeat them later to the person’s face |
If you are hurt in the chat room by others, you should .
A.fight back in the same way | B.take them seriously |
C.pay no attention to them | D.be angry at them |
If a newcomer who communicates on line makes any mistakes, you .
A.should point them out sharply |
B.shouldn’t give any advice unless required by them |
C.should say something about them |
D.should correct them at once |
This passage mainly tells us .
A.some rules of Internet communication |
B.ways of sending messages |
C.rules of the face – to – face communication |
D.ways of making friends on the Internet |
No one knows yet the accurate number of lives which have been lost in this terrible fire. But reports suggest that it is more than one hundred.
A wall of fire fifty feet high and at least one hundred and fifty miles wide is now racing towards the forests and rich farmlands of southern Victoria. Towns less than one hundred miles from Melbourne will be in danger unless the wind changes. People are rushing excitedly into the streets. The police have warned them not to see the fire but many people are doing so.
The cause of the fire is unknown. No rain has fallen in this part of Australia for three months, and the hot, north-west wind from the great central desert is blowing at more than thirty miles an hour.
The firefighters are traveling to the fire by road, rail and air. But it is not easy to get there. Flames and fallen trees have cut off or blocked roads and railway lines. The thick smoke often prevents them from finding the air strips (飞机跑道).
It is said that the fire has brought the greater danger to the country since the Second World War.
By the time the article is written, the fire .
A.has just broken out | B.has been put out |
C.is spreading fiercely | D.is coming to an end |
The writer writes this article mainly to tell people .
A.the fire is terrible and dangerous |
B.it is very easy to put out the fire |
C.less than one hundred people die of the fire |
D.to join in the fight against the fire |
In the 4th paragraph, the writer suggests (暗示) that .
A.the fire would be controlled by the firefighters very soon |
B.it will be very difficult to put out the fire |
C.the government is paying great attention to the fire |
D.the fire has caused great losses and the airport was in danger |
The underlined word “ accurate ” in the first sentence has the same meaning as .
A.recent | B.false | C.rough(大约的) | D.exact |
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