高中英语阅读理解科技类三
高考英语高中英语阅读理解习题及答案
一、高中英语阅读理解1．阅读理解The founder of electric supercar maker Rimac has said it won't make sense for people to own or drive their own cars in the coming decades.According to Rimac, most people will no longer own or operate their own cars in the future. Instead, vehicles will be shared, self—driving and electric. These changes are already starting. "There will be people who still want to own their cars and drive their cars and I am happy for that because that is our business," Rimac said. "Long term, I think 20 years down the road, it will be totally changed and people will not own or drive their cars anymore." Rimac's most recent car, the C—Two, comes off the production line next year.Rimac is well aware the industry is changing quickly due to the rise of self-driving vehicles and electric batteries, and says in the next 20 years driving as we know it may exist mainly as a hobby. "I really believe that humanity goes for things that make sense." he told Newsweek. "If you look at 1.3 million people dying every year on the roads, if you look at the impact it has on economies based on traffic jams and time lost, it's so much of a negative impact to society that I think such a huge benefit can be gained if people stop driving.""Let's look into the future. You are standing in front of the choice of either investing a huge amount of your money in buying a hunk of metal and plastic for 30, 40, 50 thousand dollars, or you have the convenient option of paying as you go, the car picks you up in a few minutes, it's a nice environment and you spend a few dollars per day on your transport.""When you take the driver out of the car, transport can be much cheaper and you can use the time to do other things, instead of sitting behind a steering(转向)wheel and not doing anything else. So I think the choice for the vast majority of people will be the obvious one."（1）What can we learn from paragraph 2?A.The majority of people will purchase cars.B.Huge changes will take place in car industry.C.Driving cars will enjoy more popularity.D.The car business is gradually disappearing.（2）What is a major cause of the fast change in the car industry?A.The rapid growth of self-driving cars.B.The rise of shared vehicles.C.The increasing demand of customers.D.The advanced production line.（3）How does Rima feel about the future of self-driving cars?A.Uncertain.B.Confused.C.Optimistic.D.Frightened.（4）What can be a suitable title for the text?A.Self-driving cars meet new challenges.B.Self-driving cars avoid human errors.C.Possessing or driving cars won't be a must.D.Conventional cars will be completely replaced.【答案】（1）B（2）A（3）C（4）C【解析】【分析】本文是一篇议论文，讲述了由于自动驾驶车辆和电池的兴起，在不远的将来人们不用再买车和驾车，此外自动驾驶车辆将给社会和环境带来巨大好。
【英语】高三英语阅读理解(科普环保)解题技巧讲解及练习题(含答案)含解析
【英语】高三英语阅读理解(科普环保)解题技巧讲解及练习题(含答案)含解析一、高中英语阅读理解科普环保类1．犇犇阅读下面文章，然后从题中所给的A、B、C、D四个选项中，选出每个问题的最佳选项。
An international team of researchers from the University of Oxford have found that the way people use the Internet is closely tied to the seasonal movements in the natural world. Their online species searches follow the patterns of seasonal animal migrations (迁徙).Migratory birds (候鸟) flood back to where they reproduce every spring. That migratory behavior is accompanied by some human behavior. "In English-language Wikipedia (维基百科), the online searches for migratory species tend to increase in spring when those birds arrive in the United States," said the lead author John Mittermeier.And not just birds. Mittermeier and his team surveyed nearly 2.5 billion Wikipedia search records, for 32,000 species, across 245 languages. They also saw variable search rates for insects, horsetails and flowering plants. Seasonal trends seemed to be widespread in Wikipedia behavior for many species of plants and animals.This finding suggests new ways to monitor changes in the world's biological diversity. It also shows new ways to see how much people care about nature, and which species and areas might be the most effective targets for conservation.Mittermeier is encouraged by the search results. He commented, "I think there's a concern among conservationists (生态环境保护者) that people are losing touch with the natural world and that they're not interacting with native species anymore. And so in that sense, it was really exciting and quite unexpected for me to see people's Wikipedia interest closely related to changes in nature."Richard Grenyer, Associate Professor from the University of Oxford, says search data is useful to conservation biologists, "By using these big data approaches, we can direct our attention towards the difficult questions in modern conservation: which species and areas are changing, and where are the people who care the most and can do the most to help."（1）What have researchers found about species searches?A.They strengthen ties among people.B.They affect the animal movements.C.They differ in language backgrounds.D.They reflect animal migration seasons.（2）What is the purpose of writing Paragraph 3?A.To summarize the research process.B.To further support the research findings.C.To show the variety of species searches.D.To present researchers' heavy work load.（3）How does Mittermeier feel about the search results?A.Satisfied with Wikipedia's service.B.Worried about Wikipedia behavior.C.Amazed at people's care about nature.D.Sad about people's not getting close to nature.（4）Why does Richard think such search data is useful?A.It helps to aim at conservation targets.B.It increases interest in big data approaches.C.It keeps track of trends in biologists' work.D.It pushes people to solve difficult problems.【答案】（1）D（2）B（3）C（4）A【解析】【分析】本文是一篇说明文，牛津大学的一个国际研究小组发现，人们使用互联网的方式与自然界的季节性运动密切相关。
高中英语阅读理解经典试题(含答案)doc
一、高中英语阅读理解1．阅读理解It started during a yoga class. She felt a strange pull on her neck, a feeling completely foreign to her. Her friend suggested she rush to the emergency room. It turned out that she was having a heart attack.She didn't share similar symptoms with someone who was likely to have a heart attack. She exercised, watched her plate and did not smoke. But on reviewing her medical history, I found that her cholesterol (胆固醇) level was sky-high. She had been prescribed a cholesterol-lowering statin (他汀) medication, but she never picked up the prescription because of the scary things she had read about statins on the Internet. She was the victim of fake medical news.While misinformation has been the object of great attention in politics, medical misinformation might lead to an increase in deaths. As is true with fake news in general, medical lies tend to spread further than truths on the Internet—and they have very real bad consequences.False medical information can also lead to patients experiencing greater side effects through the "nocebo effect (反安慰剂效应) ". Sometimes patients benefit from an intervention (干预) simply because they believe they will—that's the placebo effect (安慰剂效应). The nocebo effect is the opposite. Patients can experience harmful effects because they anticipate them. This is very true of statins. In blinded trials, patients who get statins are no more likely to report feeling muscle aches than patients who get a placebo. Yet, in clinical practice, according to one study, almost a fifth of patients taking statins report side effects, leading many to discontinue the drugs. What else is on the fake news hit list? As always, vaccines (疫苗) . False concerns that the vaccine may cause side effects have greatly reduced coverage rates.Cancer is another big target for pushers of medical misinformation—many of whom refuse alternative therapies. "Though most people think cancer tumors are bad, they're actually the way your body attempts to contain the harmful cells," one fake news story reads. It warns that prescription medications lead to the uncontrolled cell mutations (变异) .Silicon Valley needs to face this problem. I am not a free-speech lawyer, but when human health is at risk, perhaps search engines, social media platforms and websites should be held responsible for promoting or hosting fake information. Meanwhile, journalists should do a better job of spreading accurate information.（1）We can learn from Paragraph 2 that ________.A. the woman paid little attention to her daily dietsB. the unhealthy lifestyle might lead to the woman's heart attackC. the symptom of the heart attack was familiar to the womanD. the woman didn't take the prescription due to fake medical news（2）According to the passage, the placebo effect functions because patients ________. A. neglect necessary treatment B. discontinue the harmful drugsC. believe the benefits of an interventionD. suffer more side effects（3）What does the author mean by claiming that "he is not a free-speech lawyer" in the lastparagraph?A. He is a lawyer very easy to speak to.B. He is good at speaking because of his job.C. He is available to give a speech on the law.D. He is very cautious when speaking something（4）The main purpose of the passage is to ________.A. remind us to take medication as prescribedB. warn us against fake medical news on the InternetC. encourage journalists to report more positive news eventsD. teach us how to distinguish fake medical news on the Internet【答案】（1）D（2）C（3）D（4）B【解析】【分析】本文是一篇议论文，通过举例来论证了网络谣言，尤其是关于药物的网络谣言有巨大的杀伤力。
高中英语阅读理解最新高考试题精选
一、高中英语阅读理解1．阅读理解Gene technology to benefit peopleAmong all the fast growing science and technology, the research of human genes, or biological engineering as people call it, is drawing more and more attention now. Sometimes it is a hot topic discussed by people.The greatest thing that gene technology can do is to cure serious diseases that doctors at present can almost do nothing with, such as cancer and heart disease. Every year, millions of people are murdered by these two killers. And to date, doctors have not found an effective way to cure them. But if the gene technology is applied, not only these two diseases can be cured completely, bringing happiness and more living days to the patients, but also the great amount of money people spend on curing their diseases can be saved, therefore it benefits the economy as well. In addition, human life span(寿命) can be prolonged.Gene technology can help people to give birth to more healthy and clever children. Some families, with the English imperial(皇室) family being a good example, have hereditary(遗传的) diseases. This means their children will for sure have the family disease, which is a great trouble for these families. In the past, doctors could do nothing about hereditary diseases. But gene technology can solve this problem perfectly. The scientist just need to find the wrong gene and correct it and a healthy child will be born.Some people are worrying that the gene research can be used to manufacture human beings in large quantities. In the past few years, scientists have succeeded in cloning a sheep; therefore these people predict that human babies would soon be cloned. But I believe cloned babies will not come out in large quantities, for most couples in the world can have babies in very normal way. Of course, the governments must take care to control gene technology.（1）What does "these two killers" in the second paragraph refer to?A. Gene technology and another treatment of the two diseases.B. The two murderers who killed the cloned baby.C. The two diseases of cancer and heart disease.D. Hereditary diseases and cancer.（2）What's the main idea of the third paragraph?A. How gene technology can be applied in the field of treating hereditary diseases.B. Gene technology can be used to clone human babies.C. Gene technology can help people to give birth of a baby.D. Gene technology can help the English imperial family out.（3）In what way gene technology can help to treat hereditary diseases?A. Using gene technology, people with hereditary diseases can have more living days.B. Using gene technology, scientist finds the wrong gene and corrects it.C. Using gene technology, human babies can be cloned.D. Doctors can cure cancer and heart disease with the help of gene technology.（4）What is the main purpose of writing this passage?A. Expressing the writer's idea that gene technology will benefit peopleB. Telling people the advantages of gene technologyC. Telling the readers that gene technology will not benefit peopleD. Explaining that gene technology will also do harm to the humanity【答案】（1）C（2）A（3）B（4）A【解析】【分析】本文是一篇说明文，介绍了基因技术，详细讲述了基因技术的好处。
高中英语应用文写作——科技类话题
一．词块准备1．with the development of science and technology 随着科技的发展2．surf the Internet 网上冲浪3．have an easy access to 容易接触到4．chat online 在线聊天5．make efriends 交网友6．keep in touch with 与……保持联系7．have a great effect on 对……产生很大影响8．make a great difference 起很大作用9．change one’s life改变某人的生活10．benefit from ... 得益于，从……获益11．relate to/be linked to 与……有关联12．take the place of 代替13．devote oneself to 致力于14．come true 实现15．keep/catch up with 赶上16．electric books 电子读物17．enable sb.to do sth. 使某人能做某事18．take sth.into consideration/account 把某事考虑进去19．text message 手机短信20．play an important role in 在某方面起重要作用21．improve the quality of life for humans 提高人们的生活质量22．be addicted to 对……上瘾23．distract one’s attention分散某人的注意力24. send text messages 发手机短信25. make a video chat 视频聊天26. make a voice chat 语音聊天27. interact with family and friends 和亲友们互动联系28. stay connected with family and friends 与亲友们保持联系29. make and post a vlog 制作和发布视频播客30. to record and share my daily life with friends all over the world 记录和分享日常生活31. browse the Internet on their mobile phones 用手机上网32. stream videos 浏览视频33. use a search engine to look up for information 使用搜索引擎查询信息34.forward 转发35.receive likes / thumbs-up / give sb a thumbs-up 点赞36.give sb a thumbs-down 差评37.leave /make /post a comment 评论38.create an account 创建账号39.subscribe to one’s channel 订阅某人的频道40.sign up / register 注册41.confirm the WI-FI Password 确认无线密码42.pay bills from their mobile phones 用手机支付账单43.scan QR code to pay 扫码支付44.mobile payment 移动支付e strong passwords 使用强密码46.copy the file 复制文件47.a cyberbully 网络凌霸48.a troll 发帖子挑衅的人二．句型准备1．We are now living in an information age, in which TV, cellphones and the Web are widely used.我们现在生活在一个电视、手机和网络被广泛应用的信息时代。
(英语)高二英语阅读理解试题(有答案和解析)及解析
（英语）高二英语阅读理解试题(有答案和解析)及解析一、高中英语阅读理解1．阅读理解For top students from low-income families, the challenge of applying to colleges is particularly difficult. 1 in 4 deal with all of that—the writing, the studying, the researching and applying—completely on their own. One approach to make this whole process easier? Pair students up with an adviser.That's the idea behind CollegePoint, an initiative to help gifted students go to schools that match their intellectual(智力的)ability. When a high school student takes a standardized test—the PSAT, SAT or ACT——and they score in the 90th percentile, and their families make less than$80, 000 a year, they get an email from the program offering them a free adviser. The advisers listen, guide and answer students'questions.Connor Rechtzigel, an adviser in Minnesota, sees the importance of his role, for research shows that low-income students are far more likely to undermatch because they don't think they have what it takes to get in and because many don't even know what schools are out there. He helped high school senior Justice Benjamin, the first in his family to apply to college, think about what his ideal learning experience was. Finally, Justice narrowed in on smaller schools where he could study environmental science and made his final choice：Skidmore College in New York. He felt empowered by the process.Figuring out how to pay for college is a major part of what, CollegePoint advisers do. Nakhle, an adviser in North Carolina, is working with Hensley, an Ohio high school senior who can't get extra financial help from her family. They spent a lot of time comparing and analyzing her financial-aid award letters, which made her decision much clearer. Finally, the Ohio State University offered an option where she would pay nothing. Staying in-state wasn't her first choice, but it was the best option for her.（1）What is the second paragraph mainly about?A.How CollegePoint works.B.The goal of CollegePoint.C.Ways to apply for a free adviser.D.The challenge of choosing colleges.（2）What prevents low-income students from attending proper colleges?A.Overestimating their abilities.B.Knowing little about colleges.ck of enough learning experience.D.Failure to get support from their families.（3）Why did Hensley finally choose the Ohio State University?A.She didn't want to stay far from home.B.Her favorite major was provided there.C.She would show her talents to the full.D.The university met her financial needs.（4）What is the best title for the text?A.How to Be a Financial AdviserB.Steps for Top Students to Select Ideal CollegesC.Advisers Help Poor Students Apply to Suitable CollegesD.CollegePoint—a Program Helping Students Score High【答案】（1）A（2）B（3）D（4）C【解析】【分析】本文是一篇说明文，介绍了一款帮助贫困家庭的优秀生申请合适大学的虚拟建议程序。
【英语】高三英语阅读理解易错剖析及解析
【英语】高三英语阅读理解易错剖析及解析一、高中英语阅读理解1．阅读理解Research finds out why some people are constantly under attack from the bloodsucking insects while others walk free.For those unfortunate enough to feature highly on the mosquito hit list, summer nights can be synonymous with mosquito bites. Yet others hardly ever get bitten. So how do the bloodthirsty insects select their victims?The insects' tastes may seem arbitrary. However, research shows that when mosquitoes make their choices between potential victims, it all comes down to scent (气味).“Mosquitoes are attracted by carbon dioxide and heat, which everyone gives off. But mosquitoes are also attracted by certain scents,” says Karl-Martin Vagn Jensen, the head of research at the Department of Agricultural Science at Arhus University.According to Jensen, it has not yet been confirmed exactly what the scents in question are. But research does indicate that some scents are more attractive to mosquitoes than others.“All the lab employees rubbed petri dishes (培养皿) against their stomachs. In that way, their scents were put on the dishes, which were then put in a container full of mosquitoes,” he says. “The mosquitoes repeatedly landed on some of the petri dishes, but didn't go anywhere near the others.”Perhaps taking inspiration from popular fiction, there are also those who consider garlic as an excellent repellent (驱虫剂) against the winged bloodsuckers. According to the researcher, this strategy may not be entirely fruitless. “As far as I know, there is no scient ific proof that eating garlic works. But there may be something to the theory that it's possible to mask scent with garlic,” he says. The only reliable method of protection against mosquitoes is to use repellents that are sold over the counter. It contains some smells that can confuse the mosquitoes. When the mosquito comes closer, it uses smell, heat and carbon dioxide to decide whether to bite. But if it is confused by a repellent, it will never get that far.（1）Which of the following can best replace the phrase underlined in Paragraph 2?A. Be equal to.B. Be accessible to.C. Be harmful to.D. Be beneficial to.（2）What can we infer about the scents attracting mosquitoes?A. Mosquitoes can be attracted by various scents.B. Some kinds of scents appeal to mosquitoes in particular.C. The lab employees use petri dishes to deposit their scents.D. Mosquitoes are arbitrary when it comes to different scents.（3）What is the main idea of the last Paragraph?A. A new strategy is used in researching repellents.B. Garlic is considered to be an excellent repellent.C. Using repellents is an effective way against mosquitoes.D. The inspiration against mosquitoes is from popular fiction.（4）Where is the text most probably taken from?A. Science fiction.B. A biography.C. A medical report.D. A research paper.【答案】（1）A（2）B（3）C（4）D【解析】【分析】本文是一篇说明文，分析了为什么有些人经常受到吸血昆虫的攻击。
【英语】高三英语阅读理解解题技巧及练习题(含答案)及解析
【英语】高三英语阅读理解解题技巧及练习题(含答案)及解析一、高中英语阅读理解1．阅读理解Since English biologist Charles Darwin published On the Origin of Species in 1859, scientists have vastly improved their knowledge of natural history. However, a lot of information is still of the speculation, and scientists can still only make educated guesses at certain things.One subject that they guess about is why some 400 million years ago, animals in the sea developed limbs (肢) that allowed them to move onto and live on land.Recently, an idea that occurred to the US paleontologist (古生物学家) Alfred Romer a century ago became a hot topic once again.Homer thought that tidal (潮汐的) pools might have led to fish gaining limbs. Sea animals would have been forced into these pools by strong tides. Then, they would have been made either to adapt to their new environment close to land or die. The fittest among them grew to accomplish the transition (过渡) from sea to land.Romer called these earliest four-footed animals “tetrapods”. Science has alw ays thought that this was a credible theory, but only recently has there been strong enough evidence to support it.Hannah Byrne is an oceanographer (海洋学家) at Uppsala University in Sweden. She announced at the 2018 Ocean Sciences Meeting in Oregon, US, that by using computer software, her team had managed to link Homer's theory to places where fossil deposits (沉积物) of the earliest tetrapods were found.According to the magazine Science, in 2014, Steven Balbus, a scientist at the University of Oxford in the UK, calculated that 400 million years ago, when the move from land to sea was achieved, tides were stronger than they are today. This is because the planet was 10 percent closer to the moon than it is now.The creatures stranded in the pools wo uld have been under the pressure of “survival of the fittest”, explained Mattias Green, an ocean scientist at the UK's University of Bangor. As he told Science, “After a few days in these pools, you become food or you run out of food... the fish that had large limbs had an advantage because they could flip (翻转) themselves back in the water.”As is often the case, however, there are others who find the theory less convincing. Cambridge University's paleontologist Jennifer Clark, speaking to Nature magazine, seemed unconvinced. “It's only one of many ideas for the origin of land-based tetrapods, any or all of which may have been a part of the answer,” she said.（1）Who first proposed the theory that fish might have gained limbs because of tidal pools?A. Alfred Romer.B. Charles Darwin.C. Hannah Byrne.D. Steven Balbus.（2）Why were tides stronger 400 million years ago than they are today according to Steven Balbus?A. There were larger oceans.B. Earth was closer to the moon.C. The moon gave off more energy.D. Earth was under greater pressure.（3）The underlined word “stranded” in Paragraph 8 probably means “________”.A. foundB. settledC. abandonedD. trapped（4）What is the focus of the article?A. The arguments over a scientific theory.B. The proposal of a new scientific theory.C. Some new evidence to support a previous theory.D. A new discovery that questions a previous theory.【答案】（1）A（2）B（3）D（4）C【解析】【分析】本文为一篇说明文，一些新的证据验证了先前人们的猜测理论：即海洋中的动物是因为潮汐的作用导致鱼类发展出四肢，迁徙到陆地的。
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高中英语阅读理解科技类三Imagine，one day，getting out of bed in Beijing and being at your office in Shanghai in only a couple of hours，and then，after a full day of work，going back home to Beijing and having dinner there．Sounds unusual，doesn't it But it's not that unrealistic，with the development of China’s high—speed railway system．And that’s not a11． China has an even greater high—speed railway plan—to connect the country with Southeast Asia，and eventually Eastern Europe．China is negotiating to extend its own high·-speed railway network to up to 17 countries in 1 0 to 15 years，eventually reaching London and Singapore．China has proposed three such projects．The first would possibly connect Kunming with Singapore via Vietnam and Malaysia．Another could start in Urumqi and go through Kazakhstan and Uzbekistan，and possibly to Germany．The third would start in the northeast and go north through Russia and then into Western Europe．If China’s plan for the high-speed railway goes forward，people could zip over from London to Beijing in under two days．The new system would still follow China’s high—speed railway standard．And the trains would be able to go 346 kilometers an hour，almost as fast as some airplanes．China’s bullet train(高速客车)，the one connecting Wuhan to Guangzhou，already has theWorld’s fastest average speed．It covers 1,069 kilometers in about three hours．Of course，there are some technical challenges to overcome．There are so many issues that need to be settled，such as safety，rail gauge(轨距)，maintenance of railway tracks．So，it’s important to pay attention to every detail．But the key issue is really money．China is already spending hundreds of billions of yuan ondomestic railway expansion．China prefers that the other countries pay in natural resources rather than with capitalinvestment．Resources from those countries could stream into China to sustain development．It’11 be a win-win project. For other countries，the railway network will definitely create more opportunities for business，tourism and so on，not to mention the better communication among those countries．For China，such a project would not only connect it with the restof Asia and bring some much-needed resources，but would also help develop China’s far west．We foresee that in the coming decades，millions of people will migrate to the western regions，where the land is empty and resources unused．With high-speed trains，people will set up factories and business centers in the west once and for a11．And they’11 trade with Central Asian and Eastern European countries．67．China’s new high-speed railway plan will be a win-win project because ．A．China will get much-needed resources and develop its western regions B．China and the countries involved will benefit from the project in various waysC．China will develop its railway system and communication with other countriesD．the foreign countries involved will develop their railway transportation，business and tourism68．According to the passage，the greatest challenge to the new high-speed railway plan is ． A．technical issues B．safety of the system C．financial problems D．maintenance of railway tracks 69．Which of the following words best describes the author’s attitudetowards China’s high-speedrailway planA．Critical． B．Reserved． C．Doubtful D. Positive．70．Which of the following might be the best title for the passageA．New Railway Standards B．Big Railway DreamsC．High—speed Bullet Trains D．International Railway NetworkBHave you ever noticed the color of the water in a river or stream after a heavy rainfall What do you think caused this change in color It is soil that has been washed into the river from the riverbank or from the nearby fields．Components of SoftSoil is made up of a number of layers(层)，each having its own distinctive color and texture．The upper layer is known as the litter．It acts like a blanket, limiting temperature changes and reducing water loss．The topsoil layer is made up of small particles of rock mixed with rotten plant and animal matter called humus(腐殖质)，which is black and gives the topsoil its dark color．This layer is usually rich in nutrients，oxygen，and water．Below the topsoil is the subsoil，a layer that contains more stones mixed with only small amounts of organic matter．This layer is lighter in colour because of the lack of humus．Beneath the soil lies a layer of bedrock．Soil forms from the bottom up．Over time bedrock is attacked by rain, wind，frost, and snow．It is gradually broken down into smaller particles in a process called weathering．Plants begin to grow，and rotten materials enrich the topsoil．Most of the soil in Eastern Canada, for example, was formed from weathered rock that was exposed when the ice disappeared l2, 000 years ago．Water Beneath the SoilSurface water collects and flows above the ground in lakes, ponds, and rivers．Once in the soil or rock，it is called groundwater．Gravity pulls groundwater through the soil in a process called percolation(渗透)．Eventually the water reaches a layer called the water table．Under this is bedrock through which water cannot percolate．As water percolates downward，it dissolves organic matter and minerals from the soil and carries them to deeper layers．This causes a serious problem because plants require these nutrients for growth.Soil pHSoil can be acidic, neutral, or basic．The pH of the soil is determined by the nature of the rockfrom which it was formed, and by the nature of the plants that grow and rot in it．The acidity of rain and snow can lower the pH of the groundwater that enters the soil．By burning fossil fuels such as coal，oil and gasoline，humans have been contributing to higher levels of acidity in many soils．When fossil fuels are burned, gases are released into the air and then fall back to earth as acid rain．Acid soil increases the problem of carrying nutrients to lower soil levels．As nutrients are removed，soil is less fertile．Plants grow more slowly in acidic soil，and also become easily attacked by diseases．67．The layer of soil that provides necessary nutrients for plant growth is called．A．1itter B．topsoil C．humus D．subsoil68．According to the text．which of the following is NOT trueA．Soil forms from weathered rock on the earth surface．B．The deeper layer of soil is darker in color than the surface soil．C．Air pollution is partially responsible for acid soil．D．Groundwater tends to carry away nutrients for plant growth．69．We can infer from the passage that the water table lies ．A．between the topsoil layer and the subsoil layer B．in the subsoil layer above bedrockC．between the subsoil layer and bedrock D．in the bedrock layer beneath the subsoil70．The underlined word “dissolve” is used to express the idea that organic matter and minerals from soil are ．A．rushed away into the river B．cleaned and purified by water C．destroyed and carried away by water D．mixed with water and become part of it67 .B 68 .C 69. D 70 .B67．B 68．B 69．C 70．D。