高考英语阅读理解(科普环保)基础练习题

【英语】高考英语阅读理解(科普环保)基础练习题一、高中英语阅读理解科普环保类1．犇犇阅读短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。

Robots are now being employed not just for dangerous tasks, such as discovering mines or rescuing people in disasters. They are also finding application as household helps and as nursing assistants. As increasing numbers of machines, equipped with the latest artificial intelligence, take on a growing variety of specialized and everyday tasks, the question of how people see them and behave towards them becomes ever more urgent.A team led by Sari Nijssen of Radboud University and Markus Paulus, Professor of Developmental Psychology at Ludwig-Maximilians-Universitaet (LMU), have carried out a study to determine the degree to which people show concern for robots and behave towards them based on moral principles.According to Sari Nijssen, the study set out to answer the following question:" Under what circumstances would adults be willing to sacrifice robots to save human lives?" The participants were faced with a hypothetical (假设的) moral dilemma: Would they be prepared to put a single person at risk in order to save a group of injured persons? In the situations presented the intended victim was either a human, a humanoid robot that had been humanized (人性化的) to various degrees or a robot that was clearly recognizable as a machine.The study suggested that the more the robot was humanized, the less likely participants were to sacrifice it. Situations that included vivid stories in which the robot was described as a merciful being or as a creature with its own understandings, experiences and thoughts, were more likely to stop the study participants from sacrificing it in the interests of anonymous (无名的) humans. "This result indicates that our study group attached a certain moral status to the robot," says Paulus. "One possible suggestion of this finding is that attempts to humanize robots should not go too far. Such efforts could come into conflict with their intended function—to be of help to us."（1）What has become a concern about robots?A. How to humanize them.B. How to treat them in life.C. How to use them effectively.D. How to find more applications.（2）In the study the participants probably have to decide ________.A. when to sacrifice a robotB. where to experience risksC. which robot to work withD. what robots should be like（3）What can be inferred from Paulus' words?A. Humanized robots offer less help to people.B. Humanizing robots too much may be improper.C. Certain moral status should be attached to robots.D. Conflicts often happen between humans and robots.（4）Which of the following would be the best title for the text?A. Robots, A Must for FutureB. Humanized Robots, A New TrendC. Robot Saved, People Take the HitD. Humanized Robots, Replace Human【答案】（1）B（2）A（3）B（4）C【解析】【分析】本文是一篇说明文，随着越来越多的机器人具有人性化，它们承担越来越多样化的专业和日常任务，人们如何看待他们，如何对待他们的问题变的迫在眉睫。

高考英语阅读理解(科普环保)的技巧及练习题及练习题(含答案)一、高中英语阅读理解科普环保类1．犇犇阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。

Supercomputers which can analyse blood samples and predict which patients are likely to become seriously ill could save tens of thousands of lives a year, it was revealed last night, according to The Daily Express.The artificial intelligence (AI) system, developed at University College London and set to be piloted in NHS hospitals later this year, will screen "at risk" patients so doctors can take early action to prevent death or serious illness. Prof Young, a consultant surgeon at Southend University Hospital, said: "I am so excited about this form of technology." Instead of people getting sick or dying because they are not picked up in time, this will allow us to step in earlier which will save lives and an enormous amount of money. "I think the potential of AI in healthcare like this is as big as the Industrial Revolution was—and signals a completely new example in the way we manage healthcare."The technology is the brainchild of Dr Vishal Nangalia, a consultant at the Royal Free Hospital in London. He used AI to analyse a billion stored blood samples from 20 different UK hospital trusts dating back up to 12 years. Computers assess blood test results by picking up subtle changes in red and white blood cells, suggesting a patient is going downhill.He found the technique forecast outcomes of patients with kidney problems with up to 95 per cent accuracy. Traditional methods highlighting serious patient concerns picked up as few as 16 percent of patients who went on to die. "This gives us the opportunity not only to save lives but to prevent serious illness, making the health service not only safer but more efficient." Prof Young said, "Instead of waiting for people to get worse, we will be able to treat them earlier."（1）What does the underlined phrase "screen" in Paragraph2 mean?A. comfortB. treatC. spotD. nurse（2）How do supercomputers help save lives?A. By storing blood samples.B. By analyzing patients' cases.C. By observing changes in blood cells.D. By assisting doctors with their operations.（3）Why did Professor Young mention the Industrial Revolution?A. To show the influence of AI.B. To stress the importance of health care.C. To introduce the topic of supercomputers.D. To present the achievement he has accomplished.（4）What do we know about the new technology?A. It helps patients recover earlier.B. It has helped save thousands of lives.C. It will promote the health service greatly.D. It is intended for patients with kidney diseases.【答案】（1）C（2）C（3）A（4）C【解析】【分析】本文是一篇说明文，介绍超级计算机能够分析血样并预测哪些病人可能会患上重病，每年可以挽救数万人的生命。

高考英语阅读理解(科普环保)试题(有答案和解析)含解析一、高中英语阅读理解科普环保类1．犇犇阅读理解Babies have an astonishing talent that adults entirely lose. By the age of one, they can recognise the significant noises around them and group them into a language. When we have lost this capacity as adults, it becomes enormously difficult to distinguish between sounds that are glaringly different to a native speaker. It all sounds Greek to us. This is because the range of possible sounds that humans use to convey meaning may be as high as 2,000, but few languages use more than 100 and even then the significant noises－the phonemes (音素) of a language－each cover a range of sounds and so vague distinctions which would change the meaning of a word in other languages.But where do these phonemes come from and why do they shift over time? New research suggests that the apparently arbitrary distribution of some sounds around the world may be partially explained by diet. This is unexpected. We'd rather think of language as product of our thought rather than of the arrangement of our teeth. In reality, though, any given language must be both.Hunter gatherer languages very seldom use the sounds known as labiodentals (唇齿音)－those such as f and v－that are made by touching the lower lip with the upper teeth. Only two of the hundreds of Australian aboriginal languages use them, for example. But in cultures that have discovered farming, these consonants (辅音) are much more common. The argument goes that farmers eat more cooked food and more dairy than hunter gatherers. Either way, they need to chew mush less, and to bite less with their front teeth. So farmers grew up with smaller lower jaws and more of an overbite than their ancestors who had to bite through harder foods. It became easier for them to make the labiodental consonants instead of purely labial (唇音) ones: one example is that f come to take the place of p. Romans said "pater" but English speakers (unless they're Rees－Moggs) say "father".Beyond these particular changes, the story highlights the way in which everything distinctively human is both material and spiritual: speech must combine sound and meaning, and the meaning can't exist or be transmitted without a real object. But neither can it be reduced to the purely physical, as our inability to understand or even to recognise foreign languages makes clear. The food we eat shapes our jaws, and our jaws in turn shape the sounds of our language. The ease with which we eat probably shapes our thought too, as anyone who has suffered toothache could testify. What we eat may have shaped the sounds of our language, but how we eat changes how we feel and what we use language to express. A family meal is very different from a sandwich at the office desk, even if the calorie is the same. Food has purposes and meanings far beyond keeping us alive and pleasing the Palate (味觉).（1）Compared with adults, babies could more easily .A. create significant noisesB. classify the forms of noisesC. understand the Greek languageD. distinguish meaningful sounds（2）According to the passage, which of the following factors help shape language?A. Lips and teeth.B. Jobs and habits.C. Age and regions.D. Food and thinking.（3）The reason for farmers' making sounds of "f" and "v" is .A. enjoying more cooked foodsB. biting more with front teethC. constantly chewing harder foodsD. growing up with lager lower jaws（4）By writing this passage, the author intends to reveal .A. jaws help shape our thoughtB. food determines our thoughtC. diet has some influence on languageD. language consists of sound and meaning【答案】（1）D（2）D（3）A（4）C【解析】【分析】本文是一篇说明文，人们一直以来认为语言是思想的产物，但是有新的研究表明饮食对于语言也会产生一些影响。

高考英语阅读理解(科普环保)基础练习题一、高中英语阅读理解科普环保类1．犇犇阅读下面短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。

While every dog owner knows their dogs can read their moods perfectly, scientists have always been a little doubtful. Now thanks to some researchers at the University of Veterinary Medicine in Vienna, Austria, we finally have some convincing evidence.For their study, biologist Corson Miller and his team exposes eleven selected dogs to digital images of women that were either angry or happy. Half the dogs were rewarded for touching the screen when shown a happy face, while the other half got their treat for selecting those that appeared angry.Interestingly, the dogs were not provided with the entire face. Some dogs were shown only upper halves while the others observed lower halves. That's because the scientists believe humans show their emotions on their entire face.After some training like how to recognize small differences like the wrinkles between the eyes or the changes in their shape that accompany the happy or angry expressions, the dogs were mostly able to identify the correct expression not only on a familiar face but on a strange face. The researchers concluded the dogs were smart enough to read human emotions.They also found those being trained to read angry expressions took a longer time to learn. They guess it may be because dogs find angry faces disgusting, causing them to withdraw quickly. However, once the smart dogs realized they were getting rewarded, the trepidation seemed to disappear. In fact, the dogs had such a good time playing the computer "game" That scientists had a hard time keeping them away from the touch screens after the study was completed.The researchers also noticed only dogs with a male owner had a harder time understanding the expressions correctly. Since the touch-screen models were all females, this confirmed what has been observed in previous studies dogs are more efficient at reading facial expressions of people that are the same gender as their owner.（1）How did the scientists conduct the experiment?A.By leaving dogs to women who are either happy or angry.B.By mixing the selected dogs together.C.By rewarding only half of the dogs touching the screenD.By showing digital pictures of women's happy or angry faces.（2）The underlined word "trepidation" in Paragraph 5 probably means ________.A.fear and hesitationB.curiosity and eagernessC.excitement and happinessD.doubt and sadness（3）According to the last paragraph, dogs with female owners ________.A.are fond of the male facesB.are uninterested in telling the emotions on the entire facesC.have difficulty telling the moods on the faces of malesD.can only recognize emotions of females（4）What is the best title for this passage?A.Mood Changes Influence DogsB.Dogs Identify the MoodsC.dogs and Their OwnersD.Dog's Mood Research【答案】（1）D（2）A（3）C（4）B【解析】【分析】本文是一篇说明文，最新的实验发现，即狗能够识别人的面部表情的变化。

（英语）高考英语阅读理解( 科普环保 ) 的技巧及练习题及练习题 ( 含答案 )一、高中英语阅读理解科普环保类1．犇犇阅读以下短文，从每题所给的A、B、 C 和 D 四个选项中，选出最正确选项。

After a morning hike in the Saneum HealingForest, 46-year-old firefighter Kang Byoung-wook has tea made from the bark of an elm tree, practices yoga ( 瑜伽 ), and makes a picture with driedflowers. He is one of 40 firefighters taking part in a three-day program, the aim of which is tooffer "forest healing" ( 丛林治愈 ); the firefighters all have posttraumatic stress disorder ( 创伤后应激阻拦 ).Saneum is one of three official healing forests in South Korea. Soon there will be 34 more. South Koreans-many of whom suffer from work stress, digital addiction, and great academic pressure haveaccepted the medicalization of nature with great enthusiasm.There is increasing evidence that being outside in a pleasant natural environment is good for us.But how many of us get to enjoy nature regularly? Fewer and fewer, it seems. According to LisaNisbet, a psychology professor at Canada s Trent University, evidence for the benefits of nature ispouring in at a time when we are most disconnected from it."We don't think of being outdoors as a way to increase happiness," says Nisbet. "We think other things will, like shopping or TV." But South Korea is starting to challenge this opinion.So what are some of the benefits of nature that Nisbet refers to? Being surrounded by nature has one obvious effect: It calms us and reduces our stress levels. This has been shown tolower blood pressure and heart rates.Another experiment conducted by psychologist Stephen Kaplan found that people who took a 50-minute walk in a park had better attention and short-term memory than those who took awalk along a city street.Perhaps what's more surprising is that nature may also make us more creative. David Strayer, a psychologist at the University of Utah, showed as much with a group of participants, who performed50 percent better on creative problem-solving tasks after three days of wilderness backpacking.In fact, we may never know exactly what nature does to the brain. Something mysterious will always remain, and maybe that's as it should be.（1） What is Kang Byoung-wook doing?（2） What does Lisa Nisbet think of being outdoors?A.It is overlooked by people.B.It has nothing to do with happiness.C.South Koreans show great interest in it.D.We need more evidence for its benefits.（3） What benefit of nature did Stephen Kaplan find?A.It affects people's feelings.B.It lowers the risks of diseases.C.It helps improve mental performance.D.It does more good than physical exercise.（4） What would be the best title for the text?A.Your life in forestsB.Your brain on natureC.The future of forest healingD.The benefits of a stress-free life【答案】（ 1） A（2） A（3） C（4） B【解析】【解析】本文是一篇说明文，由韩国患创伤后应激阻拦的消防员接受丛林治愈谈起，介绍了大自然对我们身心健康的好处。

高考英语阅读理解(科普环保)及其解题技巧及练习题(含答案)一、高中英语阅读理解科普环保类1．犇犇阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。

Boomerang children who return to live with their parents after university can be good for families, leading to closer, more supportive relationships and increased contact between the generations, a study has found.The findings contradict research published earlier this year showing that returning adult children trigger a significant decline in their parents' quality of life and wellbeing.The young adults taking part in the study were "more positive than might have been expected about moving back home—the shame is reduced as so many of their peers are in the same position, and they acknowledged the benefits of their parents' financial and emotional support. Daughters were happier than sons, often slipping back easily into teenage patterns of behaviour, the study found.Parents on the whole were more uncertain, expressing concern about the likely duration of the arrangement and how to manage it. But they acknowledged that things were different for graduates today, who leave university with huge debts and fewer job opportunities.The families featured in the study were middle-class and tended to view the achievement of adult independence for their children as a "family project". Parents accepted that their children required support as university students and then as graduates returning home, as they tried to find jobs paying enough to enable them to move out and get on the housing ladder. "However", the study says, "day-to-day tensions about the prospects of achieving different dimensions of independence, which in a few extreme cases came close to conflict, characterised the experience of a majority of parents and a little over half the graduates".Areas of disagreement included chores, money and social life. While parents were keen to help, they also wanted different relationships from those they had with their own parents, and continuing to support their adult children allowed them to remain close.（1）What is the finding of the previous research?A. Boomerang children made their parents happier.B. The parents were looking forward to their children's return.C. The parents' quality of life became worse than before.D. Boomerang children never did any housework.（2）The underlined word "trigger" in Paragraph 2 may be best replaced by ________. A. cause B. defeat C. arise D. allow（3）What is the attitude of the college graduates towards returning home?A. They are ashamed of turning to their parents for help.B. They are glad that they could come back.C. They are doubtful about whether they should return.D. They are proud to be independent from the family.（4）What can be inferred as the reason for the "boomerang children" phenomenon?A. The children want to keep in closer touch with their parents.B. The parents are willing to provide support to their children.C. It is harder for the children to secure a satisfying job.D. There is more house work needed to be done by the children.（5）What is the side effect of the boomerang children phenomenon?A. Both parents and children enjoy a more harmonious relationship.B. Neither parents nor children want to do the chores at home.C. Not only parents but also children want to be independent.D. There are occasional quarrels between parents and children.【答案】（1）C（2）A（3）B（4）C（5）D【解析】【分析】本文是一篇说明文，一项研究发现，“回巢族”子女在大学毕业后回到父母身边生活对家庭是有好处的，他们会与父母建立更亲密、更具支持性的关系，并增进两代人之间的联系。

英语阅读理解（科普环保）练习题20篇一、高中英语阅读理解科普环保类1 .犇犇阅读下列短文，从每题所给的A B、C和D四个选项中，选出最佳选项。

A team Of international SCientists is due to Set off for the world's biggest iceberg in a missiOn aiming to an SWer fun dame ntal questi OnS about the impact of CIimate Cha nge in the polar regi ons. The SCientists, led by the BritiSh Antarctic SUrVey （BAS）, are trying to reach a newly revealed ecosystem that had been hidden for 120,000 years below the LarSen C ice shelf.LaSt year, Part of the LarSe n C ice shelf CaIVed （崩解）away, forming a huge iceberg-A68 —WhiCh is four times bigger than London, and revealing life beneath for the first time. Now SCientists Say it is a race aga inst time to explore these new ecosystems before they are tran SfOrmed to the light. Marine biologist Dr Katrin LinSe from the BAS is leading the mission."The calvi ng of A68 PrOVideS US With a UniqUe opport Unity to StUdy marine life as it resp OndS to a huge environment Change," She said. "It is important that We get there quickly before the Un dersea en viro nment Cha nges as SUn Iight en ters the water."PrOfeSSOr DaVid VaUghan, SCience director at the BAs, said, "We need to be bold （大胆的）On this one. LarSen C is a Iong Way south and there's lots of Sea ice in the area, but this is important SCie nce, so We will try our best to get the team Where they n eed to be. He Said CIimate Cha nge had already affected the Sea around Antarctica and is Warming some COaStaI waters. "Future Warmi ng may make some habitats warm. Where these habitats SUPPOrt UniqUe SPeCieS that are adapted to love the cold and not the warm, those SPeCieS are going to either move or die."There is growing ConCern about the POSSibIe impact of CIimate Change in the Antarctic.EarIier this mon th, a report revealed that melti ng ice SheetS in Gree nland and An tarctica are SPeedi ng UP the already fast PaCe of the Sea level rise. The research, PUbIiShed by theNatio nal ACademieS of SCienCei Engineering and MediCine , said, "At the CUrrent rate, the world's ocean will be, On average, at least 60cm higher by the end of the Cen tury." However, it found that the PrOCeSS is accelerati ng, and more tha n three quarters of the accelerati On SinCe 1993 is due to melt ing ice SheetS in Gree nland and An tarctica, the StUdy shows.（1）Why are the SCientists eager to go to the iceberg?A.To StUdy how the iceberg WaS formed.B.To StUdy a n ewly discovered ecosystem.C.To explore a new Way to PreVe nt CIimate Cha nge.D.To explore the geography of the LarSe n C ice shelf.（2）What do the Underlined words "this one" in the fourth ParagraPh refer to?A.The LarSe n C ice shelf.B.CIimate Cha nge in An tarctica.C.The A68 iceberg With the ecosystem ben eath it.D.The Con diti On Of ani mal SPeCieS in An tarctica.（3）What Can We Iearn about the A68 iceberg from the text?A.It is as big as London.B.It is Part of an ice shelf in the Arctic.C.It will disappear in a Very short time.D.It has Un CoVered an UnknoWn ecosystem in An tarctica.(4)What Can We infer from the last paragraph?A.There is no n eed to worry about CIimate Cha nge in An tarctica.B.The ice SheetS in Gree nland and An tarctica are melt ing at a Steady rate.C.Many CreatUreS IiVing in deep Water will die out due to CIimate Change.D.By 2100, the Sea level will have risen to a much higher level than now.【答案】(1) B(2) C(3) D(4) D【解析】【分析】本文是一篇说明文，南极地区的拉森C冰架崩解形成了一座巨大的冰山A68 iceberg。

高考英语阅读理解(科普环保)基础练习题含解析一、高中英语阅读理解科普环保类1．犇犇阅读短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

A new study from brain researchers helps explain how the human brain evolved or changed over time, to permit people to speak and write.Michael Ullman, the lead researcher, a professor at Georgetown University Medical School in Washington, D.C, has been studying language learning for more than 20 years.Ullman says his research shows that the human brain does not have a special area or system for making language. Over time we have simply reused or co-opted (指派) parts of our brain for language. And those parts, he says, are ancient-older even than humans themselves."This study examines the theoretical framework (准则) that language is learned, stored and' processed in two ancient learning and memory systems in the brain."Ullman, Hamrick and the rest of the team looked at data from 16 other studies on language. They found that people learn language using two memory systems: declarative and procedural. Memorizing vocabulary, for example, is a declarative memory process. But learning grammar is, mostly, a procedural memory process."Declarative memory, in humans at least, is what we think of as learning memory', such as, 'Oh, remember what you said last night' or things like that. And procedural motor memory is what we often call motor memory' such as how you learn to ride a bicycle." Or, Ullman adds, "These procedural memory skills become so deeply leaned that we are no longer aware that we are doing them."However, Ullman explains that the two long-term memory systems can share tasks. And, he adds, the adult brain uses the systems to learn language a bit differently than a child's brain. "Adult language learners of a second language may use their declarative memory for using grammar patterns. They think about it purposefully. For a child, the grammar may come more naturally. They don't have to think about the grammar rules before speaking."In addition to language learners, Ullman's study could help people who have a brain injury that affects speaking and writing. This knowledge can also help those who have learning disabilities such as dyslexia (阅读障碍). People with dyslexia have difficulty recognizing words and symbols accurately.（1）How did Ullman study human's memory systems?A. By examining the brain with his team.B. By studying language learning over years.C. By comparing different languages year after year.D. By referring to data from other studies on language.（2）Which of the following is an example of "motor memory"?A. Learning to make a model plane.B. Remembering the grammar patternsC. Repeating what you heard.D. Memorizing what you read.（3）What does the underlined word "it" refer to?A. Declarative memory.B. An adult language learner.C. Using grammar patterns.D. A second language.（4）What's the main idea of the text?A. Ullman has advanced our language understanding.B. A new research helps people learn a new language.C. Learning memory is more active than motor memory.D. Human beings learn language in pre human area of brain.【答案】（1）D（2）A（3）C（4）D【解析】【分析】本文是一篇说明文，讲述Michael Ullman和他的团队的研究称人类大脑前区的为语言学习区，由此解开了人类大脑进化过程之谜。

（英语）高三英语阅读理解(科普环保)题20套(带答案)含解析一、高中英语阅读理解科普环保类1．犇犇阅读理解According to a recent study, a new genetically modified rice can prevent infections of HIV, the virus responsible for the disease AIDS.The study reports the newly-developed rice produces proteins that attach directly to the HIV virus. This process prevents the virus from mixing with human cells. The scientists say it can remove the effect of the virus and block its spreading.The Joint United Nations Program on HIV/AIDS reports that worldwide, nearly 37 million people were living with HIV in 2017. The organization says the largest number of those are in developing countries. Nearly two-thirds of HIV cases are in Africa. Now there is no cure for HIV/AIDS though there have been developments in oral drug treatments to slow the progression of the disease.The new study predicts the rice-based method will lead to long-term use of the anti-HIV treatment across the developing world. Researchers said the "groundbreaking" discovery is "realistically the only way" that anti-HIV combination treatments can be produced at a cost low enough for the developing world.They say the easiest and most cost-effective way to use the rice will be to make it into a cream to be put on the skin. The HIV-fighting proteins can then enter the body through the skin. People all over the world could grow the rice and make the cream themselves. This would prevent the cost and travel required for many patients to receive treatments and medicine.The process of changing the genetic structure of food crops has been debated for some time. Critics of genetically engineered crops believe they can harm people. The scientific team says further testing is needed to ensure that the genetic engineering process does not produce any additional chemicals that could be dangerous to people.（1）What does the author intend to do in paragraph 3?A. Stress the urgency of HIV treatments.B. Provide some data about HIV.C. Remind readers of HIV prevention.D. Introduce HIV to the public.（2）In which way will the rice be used at the lowest cost?A. By transforming it into proteins.B. By adding it to an oral drug.C. By attaching it to the HIV virus.D. By processing it into a cream.（3）What can we infer about the genetic engineering process?A. It can prevent infections of HIV.B. It can produce dangerous chemicals.C. It still requires perfecting.D. It applies to the developed world.（4）From which is the text probably taken?A. A biology textbook.B. A health magazine.C. A social webpage.D. A first aid brochure.【答案】（1）A（2）D（3）C（4）B【解析】【分析】本文是一篇说明文，介绍了科学家培育出可预防艾滋病病毒感染的转基因水稻。

英语阅读理解(科普环保)专项习题及答案解析一、高中英语阅读理解科普环保类1．犇犇阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。

When you think back to the blackboard from your school days, what color is it? Chances are that it's green. So what's up with the name? Originally, blackboards were really black. Before wall-sized blackboards existed, late 18th-century students used their own mini boards made of slate (石板) or painted wood, according to Concordia University, Those first boards were, in fact, black, and they paved the way for the larger ones.In 1800 when a Scottish headmaster named James Pillans wanted his students to draw maps, the students couldn't draw the maps their teacher wanted on their tiny boards, so Pillans put several slates together to create a large board. Problem solved! From there, the idea spread quickly as teachers could finally show a concept to the whole class at one time. By 1815, the massive writing spaces were common enough to earn their own name: blackboard.The color change came in the 1960s when companies sold, steel plates, coated with green enamel (漆) instead of the traditional dark slate. The new material was lighter and less fragile than the first blackboards, so they were cheaper to ship and more likely to survive the journey. Teachers weren't complaining either. After all, the new "greenboards" made the chalk powder easier to erase. Plus, the enamel left less of a glare and the color was nicer to look at. At that point, people started using the word "chalkboard "as a more accurate descriptor, but "blackboard" still stuck around.（1）What did the late 18th-century students use in class?A. Blackboard.B. Chalkboard.C. Greenboard.D. Mini board.（2）Why did the headmaster ask the students to put their mini boards together?A. To make a comparison.B. To make enough space.C. To draw students' attention.D. To arouse students' interest.（3）Which of the following is NOT the advantage of the "greenboard"?A. They're lighter in weight.B. They're more convenient to transport.C. They're easier to erase the powder.D. They're more useful than the traditional ones.（4）What's the main idea of the text?A. Introduction of the blackboard.B. Origin of the blackboard.C. Color of the blackboard.D. Function of the blackboard.【答案】（1）D（2）B（3）D（4）C【解析】【分析】本文是一篇说明文，通过描述黑板发展历程向读者介绍了黑板最早的时候确实是黑色的，随后慢慢发展变成了绿色。