What makes a person a scientist?Does he have ways or tools of learning that are different from those of others?The answer is “no”. It isn’t the tools a scientist uses but how he uses these tools which make him a scientist. You will probably agree that knowing how to use a power is important to a carpenter(木匠).You will probably agree,too,that knowing how to investigate(調(diào)查),how to discover information,is important to everyone. The scientist,however,goes one step further;he must be sure that he has a reasonable answer to his questions and that his answer he gets to many questions is into a large set of ideas about how the world works.?
The scientist’s knowledge must be exact. There’s no room for half right or right just half the time. He must be as nearly right as the conditions permit. What works under one set of conditions at one time must work under the same conditions at other times. If the conditions are different,any changes the scientist observes in a demonstration(實(shí)證)must be explained by the changes in the conditions. This is one reason why investigations are important in science. Albert Einstein,who developed the Theory of Relativity,arrived at this theory through mathematics. The accuracy(正確性)of his mathematics was later tested through investigation. Einstein’s ideas were proved to be correct. A scientist uses many tools for measurements. Then the measurements are used to make mathematical calculations(計(jì)算)that may test his investigations.
【小題1】What makes a scientist according to the passage?
A.The tools he uses. | B.His ways of learning. |
C.The way he uses his tools. | D.The various tools he uses. |
A.the importance of information |
B.the difference between scientists and ordinary people |
C.the importance of thinking |
D.the difference between carpenters and ordinary people |
A.works under one set of conditions at one time and also works under the same conditions at other times |
B.doesn’t allow any change even under different conditions |
C.leave no room for improvement. |
D.can be used for many purposes |
A.Scientists are different from ordinary people. |
B.The Theory of Relativity?. |
C.Exactness is the core(核心)of science. |
D.Exactness and way of using tools are the keys to making of a scientist. |
【小題1】C
【小題2】C
【小題3】A
【小題4】D
解析試題分析:是什么品質(zhì)成就了一名科學(xué)家呢?是他學(xué)習(xí)的方式還是學(xué)習(xí)的工具使他與眾不同呢?答案是否定的?茖W(xué)家之所以能成為科學(xué)家,不是因?yàn)樗麄兪褂玫墓ぞ卟煌,而是因(yàn)樗麄兪褂霉ぞ叩姆绞讲煌?此外作為一名科學(xué)家,他們提供的理論必須是精確嚴(yán)密的。
【小題1】C細(xì)節(jié)理解題。由文章第一段It isn’t the tools a scientist uses but how he uses these tools which make him a scientist.可知一個(gè)人之所以能成為科學(xué)家不在于他所使用的工具,而在于他如何使用這些工具。故正確答案為C。
【小題2】C推理判斷題。根據(jù)句中的how可知如何去調(diào)查,如何去發(fā)現(xiàn)都需要運(yùn)用人的思維能力,這些都是人們努力思考的結(jié)果,由此推斷作者說(shuō)這些話的目的是想說(shuō)明思考的重要性,故C為正確選項(xiàng)。
【小題3】A細(xì)節(jié)理解題。根據(jù)文章第二段What works under one set of conditions at one time must work under the same conditions at other times.可知科學(xué)理論指的是可以在一系列條件下面行得通的東西,必須在別的時(shí)候也可以在同樣的條件下行得通,所以答案選A。
【小題4】D主旨大意題。文章開(kāi)頭以設(shè)問(wèn)方式提出中心What makes a person a scientist?然后在兩段中分別介紹科學(xué)家所應(yīng)該具有的品質(zhì),即如何使用工具和知識(shí)的嚴(yán)謹(jǐn)精確,由此可知D為正確選項(xiàng)。
考點(diǎn):考查科學(xué)知識(shí)類短文閱讀。
年級(jí) | 高中課程 | 年級(jí) | 初中課程 |
高一 | 高一免費(fèi)課程推薦! | 初一 | 初一免費(fèi)課程推薦! |
高二 | 高二免費(fèi)課程推薦! | 初二 | 初二免費(fèi)課程推薦! |
高三 | 高三免費(fèi)課程推薦! | 初三 | 初三免費(fèi)課程推薦! |
科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解
Many people are aware of the beauty of a solar eclipse (日食), but are surprised to learn that lunar eclipses are often just as impressive. While total solar eclipse lasts only for a few minutes and can be seen only in a small area of a few kilometers, total lunar eclipse can last for several hours and can be seen over much of the planet. In fact, the beauty and stability of lunar eclipses make them a favorite of both amateur and professional photographers.
Lunar eclipses generally occur two or three times a year, and are possible only when the Moon is full. When we see the Moon, we are actually seeing sunlight reflected off the surface of the Moon When the Earth is positioned in between the Moon and the Sun, however, the Earth's shadow falls on the Moon, and a lunar eclipse occurs.
The type of lunar eclipse - total, partial, or penumbral (半影) - that occurs depends both on how much of the Moon passes through the Earth's shadow and through which part of the shadow it passes. A penumbral eclipse occurs when the Moon passes through the Earth's outer shadow. This type of eclipse is brief and frequently goes unobserved by all but astronomers. By contrast, total and partial eclipses occur when all or part, respectively, of the Moon passes through the umbra(本影) shadow of the Earth. These eclipses are quite easy to see and are widely observed.
Unlike solar eclipses, lunar eclipses are safe to watch. Solar radiation that occurs during an eclipse of the Sun can cause a form of burns of one's eyes known as eclipse blindness. In fact, the only way to safely view a solar eclipse is by using specially designed equipment. However, since the Moon's light is reflected sunlight, it is completely safe to watch a lunar eclipse without any special equipment, although a pair of binoculars can certainly help the viewer appreciate the beauty of this phenomenon
【小題1】The underlined word "stability " most probably means_______.
A.strength | B.position | C.steadiness | D.visibility |
A.when the Moon passes between the Sun and the Earth |
B.when all of the Moon passes through the Earth's umbra shadow |
C.when only a part of the Moon passes through the Earth's outer shadow |
D.when only a part of the Moon passes through the Earth's umbra shadow |
A.longer-lasting than most solar eclipses |
B.more common than partial or full lunar eclipse |
C.the result of the shadow cast by the Moon onto the Earth |
D.more difficult to observe than other types of lunar eclipse |
A.moonlight is less strong than sunlight |
B.a(chǎn) lunar eclipse is briefer than a solar eclipse |
C.a(chǎn) lunar eclipse lasts much longer than a solar eclipse |
D.special equipment can be employed to view a lunar eclipse |
查看答案和解析>>
科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解
The energy crisis has made people aware of how the careless use of the earth’s energy has brought the whole world to the edge of disaster. The over-development of motor transport, with its increase of more cars, more traveling, has contributed to the near-destruction of our cities and the pollution not only of local air but also of the earth’s atmosphere.
Our present situation is unlike natural disasters of the past. Worldwide energy use has brought us to a state where long-range planning is vital. What we need is not a continuation of our present serious state, which endangers the future of our country, our children, and our earth, but a movement forward in order to work rapidly and effectively on planetary problems.
This country has been failing back under the continuing exposures of loss of morality and the revelation(揭露) that lawbreaking has reached into the highest place in the land. There is a strong demand for morality to turn for the better and for some devotion that is vast enough and yet personal enough to enlist the devotion of all. In the past it has been only in a way in defense of their own country and their own benefits that people have been able to devote themselves wholeheartedly.
This is the first time that we have been asked to defend ourselves and what we hold dear in cooperation with all the other people of this planet, who share with us the same endangered air and the same endangered oceans. There is a common need to reassess our present course, to change that course and to employ new methods through which the world can survive. This is a priceless opportunity.
To grasp it, we need a widespread understanding of nature if the crisis we and the world are facing is no passing inconvenience, no byproduct of the ambitions of the oil-producing countries, no environmentalists’ only fears, no byproduct of any present system of government. What we face is the result of the invention of the last four hundred years. What we need is a transformed life style. This new life style can flow directly from science and technology, but its acceptance depends on a sincere devotion to finding a higher quality of life for the world’s children and future generation.
【小題1】Which of the following has nearly destroyed our cities?
A.The loss of beliefs and ideas. |
B.More of law-breaking. |
C.Natural disasters in many areas. |
D.The rapid growth of motors. |
A.seriousness of this crisis |
B.ineffectiveness of laws |
C.similarity of the past to the present |
D.hopelessness of the situation |
A.Disregard for law. | B.Lack of devotion. |
C.Lack of understanding. | D.Destruction of cities. |
A.make a recommendation for a transformed life style |
B.limit ambitions of the people of the whole world |
C.demand devotion to nature and future generation |
D.encourage awareness of the decline of morality |
查看答案和解析>>
科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解
With the Tesla Roadster and other plugin (插入式) electric vehicles hitting the road,demand is growing for accessible refueling points to recharge(充電) them. Carbon Day Automotive, a Chicagobased company,has now demonstrated(演示)a solarpowered recharging point, known as the Solar PlugIn Station,which lets motorists easily charge their cars using electricity that has been produced without any environmental damage.
The Solar PlugIn Station has gone on show in Chicago as part of the city’s bid(競(jìng)標(biāo))to host the 2016 Olympic Games. According to Carbon Day Automotive,the Solar PlugIn Station on show in Chicago is part of the vital infrastructure(基礎(chǔ)設(shè)施) required for electric vehicles in Chicago and was the focus of a recent visit by the International Olympic Committee.
These solarpowered electricity points will be used daily to fuel the city’s electric vehicles with power from the sun. By producing the electricity from pollutionfree solar cell, the CO2 emissions are reduced to zero.
“Solar energy and electric vehicles are a partnership that is one more step to reducing our dependence on foreign oil,” says Richard Lowenthal, CEO of Coulomb Technologies.Coulomb Technologies recently developed the components (部件) required for individual recharging stations,marketed as ChargePoint Networked Charging Stations.Carbon Day Automotive is the Midwest distributor for the ChargePoint stations. The Solar PlugIn Station consists of giant solar panels (電池板) that shade the tiny ChargePoint Networked Charging Station.The solar panel is connected to an underground battery pack,ready for everyday refueling.
“Without these stations it would be like driving around in a traditional car without the availability of gas stations,” says Scott Emalfarb,CEO at Carbon Day.“The day of true plugin electric vehicles will be here sooner than most people realize and the world needs to be ready to accommodate(為……提供場(chǎng)地)them.”
【小題1】The Solar PlugIn Station is used as part of the bid to host the Olympics mainly because ________.
A.it’s environmentally friendly |
B.it makes up for the lack of electricity |
C.it’s a new idea and attracts people’s attention |
D.it brings convenience to electric vehicle users |
A.to recharge the electric vehicles takes a long time |
B.the Solar PlugIn Station will come into use in 2016 |
C.the Solar PlugIn Station has gone on show internationally |
D.Chicago is promoting the use of electric vehicles |
A.2. | B.3. | C.4. | D.5. |
A.more visitors will come to Chicago |
B.the citizens of Chicago will be able to go to work faster |
C.more space for electric vehicles will be needed |
D.the cost of electric vehicles will be lower than traditional cars |
A.Chicago Will Soon Be Full of Electric Vehicles |
B.Chicago Calls on People to Buy Electric Vehicles |
C.Chicago Fights for Its Bid to Host the 2016 Olympics |
D.Chicago Shows Its Solarpowered Recharging Stations |
查看答案和解析>>
科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解
Electrical devices(儀器)could soon use power make by human energy. Scientists say they have developed an experimental device that produces electricity from the physical movement of a person walking . British scientist Max Donelan and other scientists in Canada and the United States developed the device.
The device connects to a person’s knee. As the person walks, the device captures energy each time the person slows down. To do this , the device helps with the slowing sown movement of the leg. The movements of the walking person push parts of a small machine that produces electricity. Using the device, an adult walking quickly could produce thirteen watts of electricity in just a minute. Donelan says walking at that speed could produce enough power to operate a laptop computer for six minutes.
There are several possible uses for the device . Developers say it could help people who work in areas without electricity to operate small computers. The device could also be used in hospitals to operate heart pacemakers(起博器). It could even be used to assist in the movement of robotic arms and legs.
The experimental version of the device weighs about one and a half kilograms, but it is too costly for most people to buy. But the researchers hope to make a lighter, less costly version. An improved version should be ready in one year.
The developers hope the device will one day help developing countries. Nearly twenty five percent of people around the world live without electric power.
A similar product was invented in 2005 by Larry Rome of the University of Pennsylvania. He created a bag carried on a person’s back that also produces power from walking. The knee device does not produce as much electricity as the bag . But the bag requires the walker to carry a load of twenty to thirty kilograms.
【小題1】The second paragraph mainly talks about .
A.who developed the device |
B.how the device works |
C.several possible uses for the devices |
D.how much electricity the device can produce |
A.It is too heavy for the walker to bear |
B.It is too complex for people to use |
C.It is too expensive for most people to afford |
D.It will slow down one’s walking speed. |
A.produces power without adding more loads to the walker |
B.can produce more power in a much shorter time |
C.needs to be equipped with a battery |
D.can help the walker walk faster |
A.help housewives operate the washing machine |
B.make it much easier for us to go online |
C.produce more electricity than that invented by Larry Rome |
D.be applied to operate heart pacemakers |
A.First device powered by walking will soon be on the market |
B.Advanced technology brings in a new way to operate heart pacemakers |
C.Device gives new meaning to the idea of power walking |
D.Human energy will become a main source of electricity |
查看答案和解析>>
科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解
Popeye the Sailor first became a popular cartoon in the 1930s.The sailor in that cartoon ate lots of spinach to make him strong. People watched him, and they began to buy and eat a lot more spinach. Popeye helped sell 33 percent more spinach than before! Spinach became a necessary part of many people’s diets. Even some children who hated the taste began to eat the vegetable.
Many people thought that the iron in spinach made Popeye strong, but this is not true. Spinach does not have any more iron than any other green vegetable.
People only thought spinach had a lot of iron because the people who studied the food made a mistake. In the 1890s, a group of people studied what was inside vegetables. This group said that spinach had ten times more iron than it did. The group wrote the number wrong, and everyone accepted it.
Today, we know that the little iron there is in spinach cannot make a difference in how strong a person is. However, spinach does have something else which the body needs—folic acid.
It is interesting to point out that folic acid can help make a person strong. Maybe it was really the folic acid that made Popeye strong all along.
【小題1】Why did many people eat spinach after they saw Popeye the Sailor?
A.They thought spinach made them strong. |
B.They thought Popeye was funny. |
C.Spinach had a lot of iron. |
D.People liked folic acid. |
A.made Popeye strong |
B.was a green vegetable |
C.had less iron than other green vegetables |
D.had more iron than other green vegetables |
A.iron | B.folic acid | C.spinach | D.exercise |
A.something in food | B.a(chǎn) vegetable | C.dangerous | D.a(chǎn) certain kind of spinach |
查看答案和解析>>
科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解
Researchers found that people become happier and experience less worry after they reach the age of fifty. In fact, they say by the age of eighty-five, people are happier with their life than they were when they were eighteen years old.
Arthur Stone in the Department of Psychiatry and Behavioral Science at Stony Brook University in New York led the study. His team found that levels of stress were highest among adults between the ages of twenty-two and twenty-five. The findings showed that stress levels dropped sharply after people reached their fifties. Happiness was highest among the youngest adults and those in their early seventies. The people least likely to report feeling negative emotions were those in their seventies and eighties.
The findings appeared in the Proceedings of the National Academy of Sciences. Researchers say they do not know why happiness increases as people get older. One theory is that, as people grow older, they grow more thankful for what they have and have better control of their emotions. They also spend less time thinking about bad experiences.
The researchers considered possible influences like having young children, being unemployed or being single. But they found that influences like these did not affect the levels of happiness and well-being related to age.
The study also showed that men and women have similar emotional patterns as they grow older. However, women at all ages reported more sadness, stress and worry than men.
【小題1】What is the best title of the passage?
A.The older a person is, the more stressed he feels. |
B.The more lighthearted a person is, the happier he is. |
C.The older a person is, the more clever he grows. |
D.The older a person is, the happier he grows. |
A.only when people get older, will they feel happier |
B.older people usually have no worries in their life |
C.stress levels among the youngest are the highest of all |
D.older people are more likely to be thankful in life |
A.When people get older, they can’t remember bad experiences. |
B.When people get older, they have no young children to care about. |
C.When people get older, they learn to adjust their feelings. |
D.When people get older, they don’t care about their feelings. |
A.A Gallup organization. |
B.A popular science magazine. |
C.A university in New York. |
D.A research institution |
A.Advice to the young people on how to keep happy. |
B.Advice to the old people on how to live longer. |
C.Why women at all ages are more sad, stressed and worried. |
D.Why people will grow happier with their ages. |
查看答案和解析>>
科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解
Some snakes eat other snakes, even poisonous ones. The poison does not do them any harm(傷害). Snakes can swallow(吞下) things that are bigger around than they themselves are. This is possible because the jawbones(腭骨) are loosely joined, and the mouth can stretch(伸展)to make room for a fat animal. The snake’s slim body stretches to make space for the animal when it is inside.
Many snakes eat birds’ eggs or frogs(青蛙). Others eat pests(害蟲(chóng)), mice and other animals that harm crops on farms. Because snakes do this valuable work, you should never kill one. It is too dangerous for you to kill a poisonous one. Leave that job to experts.
【小題1】 Which of the following groups of food is usually had by a snake?
A.Mice, crops, birds’ eggs. |
B.Pests, frogs, some animals, plants. |
C.Birds’ eggs, frogs, all animals, other snakes. |
D.Mice, frogs, pests, some animals, other snakes. |
A.it is poisonous |
B.it can do something useful for man |
C.it will strike you in return |
D.we are not experts |
A.eating pests, mice and some harmful animals |
B.doing harm to other animals |
C.eating birds’ eggs and frogs |
D.both A and C |
A.have a better impression(印象) about snakes |
B.like snakes |
C.kill snakes with the help of experts |
D.regard snakes as one of man’s best friends |
查看答案和解析>>
科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解
Jiang Nan, a full-time mother in Beijing, keeps a dozen or so cloth bags at home, carefully selecting one or two before heading out to get groceries. "Most of them were giveaways from advertising marketing campaigns, but others had been handed out in the street by various environmental protection organizations," she explained.
Since June 2008 China has forbidden the production, sale and usage of plastic bags thinner than 0.025 millimeter (毫米), and retailers (零售商) are not allowed to provide free plastic bags to their customers, no matter how thick they are.
Many Chinese consumers like Jiang have learned to refuse plastic bags whenever possible in their shopping. "A plastic bag may only cost a few jiao, but it's more about how bad they are for the environment," Jiang said.
The plastic ban is for the most part well carried out in big cities, and has been obviously effective in reducing white waste. On the first anniversary of the plastic ban Global Village of Beijing, an NGO environmental organization, shows that during the year of the ban the consumption of plastic bags fell by about 40 billion pieces in chain supermarkets alone, saving more than 1.2 million tons of petrol.
However, enforcement (實(shí)施) shows rather less muscle in smaller cities, towns and countryside. In a remote town like Lichuan, the awareness of environmental protection is not as strong as that in big cities. Street vendors (街頭小販) worry that they are likely to lose customers if they charge them for plastic bags. Seeing no significance in the issue, local government often turn a blind eye to banned bag trade in the market.
There are still those who don't have an interest in living green. Cui Lin, another Beijinger, often forgets to bring a cloth bag when shopping, and has to buy plastic bags. "Anyway I think plastic bags are neater and cleaner, and I don't mind paying a couple more jiao," he shrugged.
Mrs Yu, a vegetable vendor in Lichuan County, Jiangxi Province, recalled that before plastic bags became popular in the early 1990s, Chinese people always carried a bamboo basket when they visited the market. "Plastic bags are more convenient," she comments, and her view might be that of the tens of millions of people in the nation who still cling to plastic bags, paid or free. This is suggested by her trade where piles of plastic bags are still passed out every day.
【小題1】 In Paragraph 1, the writer uses Jiang Nan's case to __________.
A.introduce a topic | B.tell a story |
C.describe a person | D.offer an argument |
A.She bought them at a low price. |
B.She borrowed them from her relatives. |
C.She got them for free. |
D.She made them herself. |
A.Cloth bags are difficult to get and heavy to carry. |
B.People's awareness of environmental protection is not strong enough. |
C.People don't mind paying a couple more jiao for plastic bags. |
D.Street vendors worry that they are likely to lose customers if they charge them. |
A.stop using | B.continue to use | C.stay close to | D.hold tightly |
A.To reduce white waste is urgent. |
B.The plastic bag ban has achieved great success. |
C.There is still a long way to go for the plastic bag ban. |
D.People's awareness of environmental protection should be stressed. |
查看答案和解析>>
百度致信 - 練習(xí)冊(cè)列表 - 試題列表
湖北省互聯(lián)網(wǎng)違法和不良信息舉報(bào)平臺(tái) | 網(wǎng)上有害信息舉報(bào)專區(qū) | 電信詐騙舉報(bào)專區(qū) | 涉歷史虛無(wú)主義有害信息舉報(bào)專區(qū) | 涉企侵權(quán)舉報(bào)專區(qū)
違法和不良信息舉報(bào)電話:027-86699610 舉報(bào)郵箱:58377363@163.com