精英家教網 > 高中英語 > 題目詳情

Here is an astonishing and significant fact: Mental work alone can’t make us tire. It sounds absurd. But a years ago, scientists tried to find out how long the human brain could labor without reaching a stage of fatigue (疲勞). To the amazement of these scientists, they discovered that blood passing through the brain, when it is active, shows no fatigue at all! If we took a drop of blood from a day laborer, we would find it full of fatigue toxins(毒素) and fatigue products. But if we took blood from the brain of an Albert Einstein, it would show no fatigue toxins at the end of the day.
So far as the brain is concerned, it can work as well and swiftly at the end of eight or even twelve hours of effort as at the beginning. The brain is totally tireless. So what makes us tired?
Some scientists declare that most of our fatigue comes from our mental and emotional(情緒的) attitudes. One of England’s most outstanding scientists, J.A. Hadfield, says, “The greater part of the fatigue from which we suffer is of mental origin. In fact, fatigue of purely physical origin is rare.” Dr. Brill, a famous American scientist, goes even further. He declares, “One hundred percent of the fatigue of sitting worker in good health is due to emotional problems.”
What kinds of emotions make sitting workers tired? Joy? Satisfaction? No! A feeling of being bored, anger, anxiety, tenseness, worry, a feeling of not being appreciated---those are the emotions that tire sitting workers. Hard work by itself seldom causes fatigue. We get tired because our emotions produce nervousness in the body.
【小題1】 What surprised the scientists a few years ago?

A.Fatigue toxins could hardly be found in a laborer’s blood.
B.Albert Einstein didn’t feel worn after a day’s work.
C.The brain could work for many hours without fatigue.
D.A mental worker’s blood was filled with fatigue toxins.
【小題2】According to the author, which of the following can make sitting workers tired?
A.Challenging mental work.B.Unpleasant emotions.
C.Endless tasks.D.Physical labor.
【小題3】What’s the author’s attitude towards the scientists’ idea?
A.He agrees with them.B.He doubts them.
C.He argues against them.D.He hesitates to accept them.
【小題4】 We can infer from the passage that in order to stay energetic, sitting workers need to ___________.
A.have some good food.B.enjoy their work
C.exercise regularlyD.discover fatigue toxins

練習冊系列答案
相關習題

科目:高中英語 來源: 題型:閱讀理解

We can stay young forever. That is the message Dr. Shen Ziyin wants to give the world. And the Chinese doctor claims that he has found an answer to the problems of aging.
His solution is a herbal medicine to slow the process of aging.
Dr. Shen Ziyin has been trained in Western medicine. At the same time he studied traditional Chinese medicine. And, he has been working for the past forty years to put together the best of both and find a cure for aging. He has
taken a hint from its aging process. It is responsible for the level of activity that the human bodies go through Studies conducted by Dr.Shen show that herbal medicine based on the shen system slow the  the ancient Chinese medicine system called “shen”.
According to Shen, it is the kidney(腎臟)which adjusts the functioning of the body as well as aging process, says a report in The Telegraph newspaper.
We notice that when people grow old, they have reduced strength, loss of hair, backache, weakness in general, and wrinkles, among others. This happens because when people grow old, their bodies produce T-cells. These T-cells contain a particular substance called Fas. Fas makes the cells in the body destruct themselves.
So the only way to slow down aging is to slow the production of T-cells in the body. This can happen if people eat low calorie food. Then the body is not active enough to produce extra T-cells. But, is going hungry all the time a good price to pay for staying young?
This is where Dr. Shen’s herbal medicine comes in. But how effective it will be, only time can tell.
【小題1】How did Dr. Shen find the solution to the problem of aging?

A.By studying Western medicine.
B.By learning traditional Chinese medicine.
C.By combining both Western and Chinese medicine.
D.By doing research on both Western and Chinese people.
【小題2】What plays the most important role in keeping people young according to Shen?
A.Medical treatment.B.People’s good kidney.
C.Level of people’s activity.D.Positive life attitude.
【小題3】The reason why people become old is that _________.
A.their bodies produce T-cells
B.their bodies are unable to fight diseases
C.they have reduced strength, loss of hair
D.they become weaker and weaker
【小題4】We can probably learn from the passage that _________.
A.producing more low calorie food allows people to keep young
B.the more Chinese herbal medicine people drink, the better for health
C.people should try to quicken the production of T-cells in the body
D.it remains unknown how effective Dr. Shen’s herbal medicine is

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

When Scotsman Alexander Graham Bell invented the telephone in 1876, it was a revolution in communication. For the first time, people could talk to each other over great distances almost as clearly as if they were in the same room. Nowadays, though, we increasingly use Bell' s invention for taking photographs, accessing the internet, or watching video clips, rather than talking. Over the last two decades a new means of spoken communication has appeared: the mobile phone.
The first real mobile telephone call was made in 1973 by Dr Martin Cooper, the scientist who invented the modem mobile handset. Within a decade, mobile phones became available to the public. The streets of modem cities began to feature sharp-suited characters shouting into giant plastic bricks. In Britain the mobile phone quickly became the same with the "yuppie" , the new type of young urban professionals who carried the expensive handsets as status symbols. Around this time many of us said that we would never own a mobile phone.
But in the mid-90s, something happened. Cheaper handsets and cheaper calling rates meant that, almost overnight, it seemed that everyone had a mobile phone. And the giant plastic bricks of the 80s had changed into smooth little objects that fitted nicely into pockets and bags.
Moreover, people' s timekeeping changed. Younger readers will be amazed to know that, not long ago, people made spoken arrangements to meet at a certain place at a certain time. But later Meeting times became approximate under the new order of communication: the Short Message Service (SMS) or text message. Going to be late? Send a text message! It takes much less effort than arriving on time, and it' s much less awkward than explaining your lateness face to face and the text message has changed the way we write in English. Traditional rules of grammar and spelling are much less important when you' re sitting on the bus, hurriedly typing "Will B 15mm late - C U @ the bar. Sorry! - )".
Alexander Graham Bell would be amazed if he could see how far the science of telephony has progressed in less than 150 years.If he were around today, he might say "That' s gr8! But I' m v busy rite now.Will call U 2nite."
【小題1】What does the underlined part in Para. 2 refer to?

A.Houses of modern cities. B.Sharp-suited characters. 
C.New type of professionals. D.Mobile phones. 
【小題2】According to Paragraph 4, why did Meeting times become approximate?
A.People were more likely to be late for their meeting. 
B.SMS made it easier to inform each other. 
C.Young people don' t like unchanging things. 
D.Traditional customs were dying out. 
【小題3】If you want to meet your friend at the school gate this evening, which of the following message can you send him?
A.Call U@ SKUg8 2nite. B.IM2BZ2CU 2nite. 
C.CU@ the bar g8 2nite. D.W84U@ SKUg8 2nite. 
【小題4】What does the passage mainly tell us about?
A.Alexander Graham' s invention. 
B.SMS @ a new way of communication. 
C.New functions of the mobile telephone. 
D.The development of the mobile phone. 

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

It's not about how much money you make, and it's not about who your daddy is. We're talking about being attractive in general, whether it's on a job interview or just gaining the respect of your colleagues . . .
Ask lots of questions
If you come across as a know-it-all (even if you really do know it all!), it really pushes people away. Rather, asking lots and lots of questions makes people feel like you care, you can be trusted.
Great body language
Your body language says a lot about you - it says whether you have confidence, or simply if you really care. Talking physically, it is one of the most important physical characteristics you need!
Stay busy
Always have something to do. Have you ever seen someone just sitting around, doing nothing? How unattractive. Always be busy with something, even if for some reason you have to make something up.
Show your pearly whites (or just smile)
Smile more, no matter how ugly your teeth are. I'm not kidding about this one. It's not all about the teeth. If you are smiling genuinely, you can draw everyone for 100 meters around to you.
Wear what fits
Wear clothing that fits you. For women, wearing tight pants or shirts is not attractive. Things that just fit you and your shape are the best but not tight. Wear things that fit you nicely, please . . . And for goodness sake, both sexes, stay away from logos and printed shirts! Most people you may ask do not find this attractive. Stop being some company's billboard(廣告牌).
Be interested in other man
Be interested in the other person. Don't talk about. If you are truly interested in the person, it will come across. And if you want to talk about yourself, you'll find that putting the other person first actually opens him up to return the favor and ask you questions. See how fun this is?
【小題1】It is your ________ that makes you attractive.

A.your family background
B.fashionable tight clothes
C.your appearance and your wealth
D.proper body language and behavior
【小題2】According to the author, if you ________, you can be trusted.
A.always smile and show your pearly teeth
B.keep asking lots of questions
C.are interested in other people’s personal affairs
D.always wear clothes that fit you
【小題3】The purpose of staying busy is to ________.
A.gain praises from your boss and colleagues
B.look attractive among people
C.show that you are interested in your job
D.get promoted in your company
【小題4】If you are going to a job interview, which of the following is a proper behavior?
A.Wearing a shirt with printed logos
B.Keeping talking about your own experiences and talents
C.Staying still, not making any body language
D.Smiling truly toward the people you will meet

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

Rae and Bruce Hostetler not only work very hard,they also relax just as well. Numerous vacations help the couple to maintain their health and emotional well-being一and it’s no surprise to health care professionals.
“Rest, relaxation, and stress reduction are very important for people’s well-being and health. This can be accomplished through daily activities, such as exercise and meditation, but vacation is an important part of this as well,” said primary care physician Natasha Withers from One Medical Group in New York. Withers lists a decreased risk of heart disease and improved reaction time as some of the benefits from taking some time off. “We also know that the mind is very powerful and can help with healing, so a rested, relaxed mind is able to help the body heal better,” said Withers.
Psychologists confirm the value of vacations for the mind. “The impact that taking a vacation has on one’s mental health is great,” said Francine Lederer, a clinical psychologist in Los Angeles who specializes in stress and relationship management. “Most people have better life perspective and are more motivated to achieve their goals after a vacation, even if it is a 24- hour time-out.” The trips could be good for their health, good for their family and good for their businesses.
The online travel agency Expedia conducted a survey about vacation time in 2010, and according to their data the average American earned 18 vacation days一but only used 14 of them. France topped the list, with the average worker earning 37 vacation days and using all but two of them. Americans’ responses may not be surprising in a culture where long hours on the job often are valued, but that’s not always good for the individual, the family or the employer.
Psychologists have also found that people who don’t take enough time to relax may find it harder to relax in the future. “Without time and opportunity to do this, the nerve connections that produce feelings of calm and peacefulness become weaker, making it actually more difficult to shift into less-stressed states,” Mulhem said.
【小題1】How did the author introduce the topic of the text?

A.By making comparisons. B.By giving an example.
C.By raising questions. D.By providing data.
【小題2】Expedia’s survey shows that Americans _____.
A.dislike family gatherings
B.have the shortest vacation
C.enjoy as many vacations as the French
D.think much of spending long hours on the job
【小題3】What can be inferred from the last paragraph?
A.One should never wait to relax.
B.Work and rest go against each other.
C.Time and opportunity wait for no man.
D.A relaxed mind determines everything.

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

In the past, man did not have to think about protection of the environment. There were very few people on the earth, and natural resources seemed to be unlimited.
Today things are different. The world has become too crowded. We are using up our natural resources too quickly, and at the same time we are polluting our environment with dangerous chemicals. If we continue to do this, human life on the earth will not survive.
Everyone realizes today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing methods, more and more fish are caught. We know that if too many trees are cut down, forests will disappear and nothing will grow on land. Yet, we continue to use more powerful machines to cut down more and more trees.
We realize that if rivers are polluted with waste products from factories, we will die. However, in most countries waste is still put into rivers, but there are few laws to stop this.
We also know that if the population of the countries in the world is to rise at the present rate in a few years, there will not be enough food.
What can we do to solve these problems?
If we eat more vegetables and less meat, there will be more food available for everyone. Land that is used to grow crops can feed five times more people than land where animals are kept.
Our natural resources will last longer if we learn to recycle them.
The world population will not rise so quickly if people use modern methods of birth control.
Finally, if all of us think about the problem, we will have a better and cleaner planet in the future.
【小題1】This passage mainly tells us about ______.

A.the problems we are facing today about environment and the ways to solve them
B.the unlimited natural resources in the world
C.our rivers are being polluted by waste from factories
D.the ways early man protected the environment
【小題2】 Which of the following is NOT true?
A.If we eat more vegetables, more food can be saved.
B.In the past, there was no need for people to think about environmental protection.
C.If we keep on cutting trees, forests will disappear.
D.We shouldn’t take more and more fish out of the sea, or there will soon be no fish left.
【小題3】What is implied (暗示) in the passage?
A.Man is cleverer than any other animal.
B.Man will destroy himself if he doesn’t solve the problem.
C.Modern fishing methods are helpful in our fishing industry.
D.We should make more laws in order to survive.
【小題4】From the passage we can see that the world’s natural resources ______.
A.will never be used up B.are being polluted
C.are as plentiful as in the past D.are being used up very quickly

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

When people first walked across the Bering Land Bridge thousands of years ago, dogs were by their sides, according to a study published in the journal Science.
Robert Wayne of the University of California, Los Angeles, and Jennifer Leonard of the Smithsonian Institute, used DNA material—some of it unearthed by miners in Alaska—to conclude that today’s domestic dog originated in Asia and accompanied the first humans to the New World about 10,000 to 15,000 years ago. Wayne suggests that man’s best friend may have enabled the tough journey from Asia into North America. “Dogs may have been the reason people made it across the land bridge,” said Wayne. “They can pull things, carry things, defend you from fierce animals, and they’re useful to eat.”
Researchers have agreed that today’s dog is the result of the domestication(馴化) of wolves thousands of years ago. Before this recent study, a common thought about the precise origin of North America’s domestic dog was that Natives domesticated local wolves, the descendents(后代) of which now live with people in Alaska, Canada, and the Lower 48.
Dog remains from a Fairbanks-area gold mine helped the scientists reach their conclusion. Leonard, an evolutionary biologist, collected DNA from 11 bones of ancient dogs that were locked in permafrost(永凍層) until Fairbanks miners uncovered them in the 1920s. The miners donated the preserved bones to the American Museum of Natural History in New York City, where they remained untouched for more than 70 years. After borrowing the bones from the museum, Leonard and her colleagues used radiocarbon techniques to find the age of the Alaska dogs. They found the dogs all lived between the years of 1450 and 1675 A.D., before Vitus Bering and Aleksey Chirikov who were the first known Europeans to view Alaska in 1741. The bones of dogs that wandered the Fairbanks area centuries ago should therefore be the remains of “pure native American dogs,” Leonard said. The DNA of the Fairbanks dogs would also expose whether they were the descendents of wolves from North America.
Along with the Fairbanks samples, the researchers collected DNA from bones of 37 dog specimens(標本) from Mexico, Peru, and Bolivia that existed before the arrival of Columbus. In the case of both the Alaska dogs and the dogs from Latin America, the researchers found that they shared the most genetic material with gray wolves of Europe and Asia. This supports the idea of domestic dogs entering the New World with the first human explorers who wandered east over the land bridge.
Leonard and Wayne’s study suggests that dogs joined the first humans that made the adventure across the Bering Land Bridge to slowly populate the Americas. Wayne thinks the dogs that made the trip must have provided some excellent service to their human companions or they would not have been brought along. “Dogs must have been useful because they were expensive to keep,” Wayne said. “They didn’t feed on mice; they fed on meat, which was a very guarded resource.”
【小題1】 The underlined word “remains” is closed in meaning to ______.

A.leftover food B.animal waste
C.dead bodies D.living environment
【小題2】According to the study described in Paragraph 4, we can learn that ______.
A.ancient dogs entered North America between 1450 and 1675 AD
B.the 11 bones of ancient dogs are not from native American dogs
C.the bones discovered by the gold miners were from North American wolves
D.the bones studied were not from dogs brought into North America by Europeans
【小題3】What can we know from the passage?
A.Native Americans domesticated local wolves into dogs.
B.Scientists discovered some ancient dog remains in 1920s.
C.Latin America’s dogs are different from North America’s in genes.
D.Ancient dogs entered North America across the Bering Land Bridge.
【小題4】The first humans into the New World brought dogs along with them because ______.
A.dogs fed on mice B.dogs were easy to keep
C.dogs helped protect their resources D.dogs could provide excellent service
【小題5】What does the passage mainly talk about ______.
A.the origin of the North American dogs
B.the DNA study of ancient dogs in America
C.the reasons why early people entered America
D.the difference between Asian and American dogs

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

Cooler temperatures, attractive colors, smaller crowds autumn is the perfect time for travel and tourism. Here, three places are listed as the best fall trip destinations. Don’t worry if you can’t go to these places. By reading this page, we hope to take you on grand tour and let you experience fun and culture around the world.

Cannstatter Volkfest, Stuttgart, Germany
Stuttgart’s Cannstatter Volkfest is listed as the world’s second largest beer-drinking event––– following Munich’s Oktoberfest. But it is considered Germany’s more authentic celebration of local heritage and, of course, beer.
Started as an agricultural fair in 1818––– a symbolic 24-meter-high “fruit column” pays homage (敬意) to the past ––– the three-week festival (from September 23 to October 9 this year) features live music, a re-created Alpine village, and carnival rides.
In addition, Stuttgart is recognized as a global car capital. Both the Mercedes-Benz and Porsche museums are worth a visit.
 
Churchill, Manitoba, Canada
Here in the northern Canadian town at Hudson Bay, visitors can see the area’s most famous fall residents ––– polar bears.
More than a thousand of the world’s largest land carnivores migrate through the “polar bear capital of the world” during October and November, when the first ice forms on the edge of Hudson Bay.
The frozen conditions make it easier for hungry bears to hunt for seals (by walking instead of swimming).
Under the snowy, winter weather, visitors can hardly have too many clothes to put on. Insulated boots, jackets, and gloves; layered clothing; thermal underwear; and woolen socks and hats are required.
 
Dublin, Ireland
The Ireland’s capital and largest city is a center for arts, entertainment, culture and commerce.
With few tourists and lower temperatures, fall is the ideal season for walking the historic Georgian streets and cruising the River Liffey.
Visitors can explore the city’s 20 square kilometers of public gardens, nature reserves, and parks, including St. Stephen’s Green, which borders Grafton Street, one of the world’s most expensive retail locations.
Along the way, enjoy traditional, paper-wrapped fish and chips at Leo Burdock.
Healthier eats will be on the menu on October 31, when more than 12,000 runners are expected for the National Lottery Dublin Marathon, named “the Friendly Marathon” for the friendly crowds cheering there.
【小題1】The passage is presented for those who ________.
A.care for fun and culture around the world
B.have planned to go for traveling this autumn
C.hate to have their holidays in other seasons
D.have not ever been to Europe and America
【小題2】If you spend your holidays on October 31, you may ________.
A.enjoy live music at the beer – drinking festival
B.watch polar bears hunt seals
C.taste traditional, paper–wrapped fish and clips
D.win a prize in “the Friendly Marathon”
【小題3】According to the passage, we can know that ________.
A.Car exhibitions will be held for two months
B.It’s not necessary to take more clothes with you to Churehill, Martitoba
C.The beer–drinking event in German dates from the eighteenth century
D.Your favourite goods might be available in the expensive shop in Dublin
【小題4】The passage is probably taken from the column of ________ in a newspaper.
A.economicsB.science
C.tourismD.fashion

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

A. The introduction of Paris
B. The culture of Paris
C. The population growth in Paris
D. The production of Paris
E. The education in Paris
F. The industries in Paris
【小題1】Paris, the capital and the largest city of the country, is in north central France. The Paris metropolitan area contains nearly 20% of the nation’s population and is the economic, cultural, and political center of France. The French governments have historically favored the city as the site for all decision-making, thus powerfully attracting nearly all of the nation’s activities.
【小題2】Paris has grown steadily since it was chosen as the national capital in the late 10th century. With the introduction of the Industrial Revolution, a great number of people moved to the city from the country during the 19th century. The migration was especially stimulated by the construction of railroads, which provided easy access to the capital. After World WarⅡ, more and more immigrants arrived.
【小題3】The city is the centralized control point of most national radio and television broadcasting. It is a place of publication of the most important newspapers and magazines and an international book publishing center. With more than 100 museums, Paris has truly one of the greatest concentrations of art treasures in the world. The Louvre, opened as a museum in 1793, is one of the largest museums in the world.
【小題4】In the late 1980s about 4. 1 million pupils annually attended about 47, 000 elementary schools. In addition, about 5. 4 million students attended some 11, 200 secondary schools. Approximately 1. 2 million students were enrolled annually at universities and colleges in France in the late 1980s. French centers of learning have served as academic models throughout the world.
【小題5】Paris is the leading industrial center of France, with about one quarter of the nation’s manufacturing concentrated in the metropolitan area. Industries of consumers’ goods have always been drawn to Paris by the enormous market of the big population, and modern, high technology industries also have become numerous since World WarⅡ. Chief manufactures are machinery, automobiles, chemicals and electrical equipment.

查看答案和解析>>

同步練習冊答案