2020高三英语精准培优专练12：阅读理解---主旨大意题(附解析)

2020高三英语精准培优专练12：阅读理解---主旨大意题（附解析）一、真题在线Passage1（2019·全国I卷，D）During the rosy years of elementary school(小学), I enjoyed sharing my dolls and jokes, which allowed me to keep my high social status. I was the queen of the playground. Then came my tweens and teens, and mean girls and cool kids. They rose in the ranks not by being friendly but by smoking cigarettes, breaking rules and playing jokes on others, among whom I soon found myself.Popularity is a well-explored subject in social psychology. Mitch Prinstein, a professor of clinical psychology sorts the popular into two categories: the likable and the status seekers. The likables’ plays-well-with-others qualities strengthen schoolyard friendships, jump-start interpersonal skills and, when tapped early, are employed ever after in life and work. Then there’s the kind of popularity that appears in adolescence: sta tus born of power and even dishonorable behavior.Enviable as the cool kids may have seemed, Dr. Prinstein’s studies show unpleasant consequences. Those who were highest in status in high school, as well as those least liked in elementary school, are “most likely to engage(从事)in dangerous and risky behavior.”In one study, Dr. Prinstein examined the two types of popularity in 235 adolescents, scoring the least liked, the most liked and the highest in status based on student surveys (调查研究). “We found that th e least well-liked teens had become more aggressive over time toward their classmates. But so had those who were high in status. It clearly showed that while likability can lead to healthy adjustment, high status has just the opposite effect on us."Dr. Prinstein has also found that the qualities that made the neighbors want you on a play date-sharing, kindness, openness — carry over to later years and make you better able to relate and connect with others.In analyzing his and other research，Dr. Prinstein came to another conclusion: Not only is likability related to positive life outcomes, but it is also responsible for those outcomes, too. "Being liked creates opportunities for learning and for new kinds of life experiences that help somebody gain an advan tage,” he said.32. What sort of girl was the author in her early years of elementary school? .A. Unkind.B. Lonely.C. Generous.D. Cool.33. What is the second paragraph mainly about？A. The classification of the popular.B. The characteristics of adolescents.C. The importance of interpersonal skills.D. The causes of dishonorable behavior34. What did Dr. Prinstein’s study find about the most liked kids?A. They appeared to be aggressive.B. They tended to be more adaptable.C. They enjoyed the highest status.D. They performed well academically.35. What is the best title for the text?A. Be Nice--You Won’t Finish LastB. The Higher the Status, the BeerC. Be the Best--You Can Make ItD. More Self--Control, Less AggressivenessPassage2（2019·全国II卷，C）Marian Bechtel sits at West Palm Beach’s Bar Louie counter by herself, quietly reading her e-book as she waits for her salad. What is she reading? None of your business! Lunch is Bechtel’s “me” time. And like more Americans, she’s not alone.A new report found 46 percent of meals are eaten alone in America. More than half (53 percent) have breakfast alone and nearly half (46 percent) have lunch by themselves. Only at dinnertime are we eating together anymore,74 percent，according to statistics from the report.“I prefer to go out and be out. Alone,but together,you know?”Bechtel said, looking up from her book. Bechtel，who works in downtown West Palm Beach,has lunch with coworkers sometimes,but like many of us,too often works through lunch at her desk. A lunchtime escape allows her to keep a boss from tapping her on the shoulder. She returns to work feeling energized. “Today, I just wanted some time to myself,”she said.Just two seats over，Andrew Mazoleny,a local videographer,is finishing his lunch at the bar. He likes that he can sit and check his phone in peace or chat up the barkeeper with whom he's on a first-name basis if he wants to have a little interaction(交流). “I reflect on how myday's gone and think about the rest of the week,” he said. “It's a chance for self-reflection, you return to work recharged and with a plan.”That freedom to choose is one reason more people like to eat alone. There was a time when people may have felt awkward about asking for a table for one, but those days are over. Now，we have our smartphones to keep us company at the table. “It doesn't feel as alone as it may have before all the advances in technology,” said Laurie Demerit, whose company provided the statistics for the report.28. What are the statistics in paragraph 2 about?A. Food variety.B. Eating habits.C. Table manners.D. Restaurant service.29. Why does Bechtel prefer to go out for lunch?A. To meet with her coworkers.B. To catch up with her work.C. To have some time on her own.D. To collect data for her report.30. What do we know about Mazoleny?A. He makes videos for the bar.B. He’s fond of the food at the bar.C. He interviews customers at the bar.D. He’s familiar with the barkeeper.31. What is the text mainly about?A. The trend of having meals alone.B. The importance of self-reflection.C. The stress from working overtime.D. The advantage of wireless technology.Passage3（2019·浙江卷，C）California has lost half its big trees since the 1930s, according to a study to be published Tuesday and climate change seems to be a major factor(因素).The number of trees larger than two feet across has declined by 50 percent on more than 46, 000 square miles of California forests, the new study finds. No area was spared or unaffected, from the foggy northern coast to the Sierra Nevada Mountains to the San Gabriels above Los Angeles. In the Sierra high country, the number of big trees has fallen by more than 55 percent; in parts of southern California the decline was nearly 75 percent.Many factors contributed to the decline, said Patrick Mclntyre, an ecologist who was the lead author of the study. Woodcutters targeted big trees. Housing development pushed into the woods. Aggressive wildfire control has left California forests crowded with small trees that compete with big trees for resources(资源).But in comparing a study of California forests done in the 1920s and 1930s with another one between 2001 and 2010, Mclntyre and his colleagues documented a widespread death of big trees that was evident even in wildlands protected from woodcutting or development.The loss of big trees was greatest in areas where trees had suffered the greatest water shortage. The researchers figured out water stress with a computer model that calculated how much water trees were getting in comparison with how much they needed, taking into account such things as rainfall, air temperature, dampness of soil, and the timing of snowmelt(融雪).Since the 1930s, Mclntyre said, the biggest factors driving up water stress in the state have been rising temperatures, which cause trees to lose more water to the air, and earlier snowmelt, which reduces the water supply available to trees during the dry season.27. What is the second paragraph mainly about?A. The seriousness of big-tree loss in California.B. The increasing variety of California big trees.C. The distribution of big trees in California forests.D. The influence of farming on big trees in California.28. Which of the following is well-intentioned but may be bad for big trees?A. Ecological studies of forests.B. Banning woodcutting.C. Limiting housing development.D. Fire control measures.29. What is a major cause of the water shortage according to Mclntyre?A. Inadequate snowmelt.B. A longer dry season.C. A warmer climate.D. Dampness of the air.30. What can be a suitable title for the text?A. California's Forests: Where Have All the Big Trees Gone?B. Cutting of Big Trees to Be Prohibited in California SoonC. Why Are the Big Trees Important to California Forests?D. Patrick Mclntyre: Grow More Big Trees in CaliforniaPassage4（2019·北京卷，D）By the end of the century，if not sooner，the world's oceans will be bluer and greener thanks to a warming climate，according to a new study.At the heart of the phenomenon lie tiny marine microorganisms(海洋微生物)called phytoplankton. Because of the way light reflects off the organisms，these phytoplankton create colourful patterns at the ocean surface. Ocean colour varies from green to blue，depending on the type and concentration of phytoplankton. Climate change will fuel the growth of phytoplankton in some areas，while reducing it in other spots，leading to changes in the ocean's appearance.Phytoplankton live at the ocean surface，where they pull carbon dioxide(二氧化碳)into the ocean while giving off oxygen. When these organisms die，they bury carbon in the deep ocean，an important process that helps to regulate the global climate. But phytoplankton arevulnerable to the ocean's warming trend. Warming changes key characteristics of the ocean and can affect phytoplankton growth，since they need not only sunlight and carbon dioxide to grow，but also nutrients.Stephanie Dutkiewicz，a scientist in MIT's Center for Global Change Science，built a climate model that projects changes to the oceans throughout the century. In a world that warms up by 3℃，it found that multiple changes to the colour of the oceans would occur. The model projects that currently blue areas with little phytoplankton could become even bluer. But in some waters，such as those of the Arctic，a warming will make conditions riper for phytoplankton，and these areas will turn greener. “Not only are the quantities of phytoplankton in the ocean changing. ”she said，“but the type of phytoplankton is changing. ”42. What are the first two paragraphs mainly about?A. The various patterns at the ocean surface.B. The cause of the changes in ocean colour.C. The way light reflects off marine organisms.D. The efforts to fuel the growth of phytoplankton.43. What does the underlined word“vulnerable”in Paragraph 3 probably mean?A. Sensitive.B. Beneficial.C. Significant.D. Unnoticeable.44. What can we learn from the passage?A. Phytoplankton play a declining role in the marine ecosystemB. Dutkiewicz's model aims to project phytoplankton changes.C. Phytoplankton have been used to control global climate.D. Oceans with more phytoplankton may appear greener.45. What is the main purpose of the passage？A. To assess the consequences of ocean colour changes.B. To analyse the composition of the ocean food chain.C. To explain the effects of climate change on oceans.D. To introduce a new method to study phytoplankton.二、对点专练Passage 1Tiny microbes(微生物)are at the heart of a new agricultural technique to manage harmful greenhouse gas. Scientists have discovered how microbes can be used to turn carbon dioxide into soil-enriching limestone(石灰石)，with the help of a type of tree that grows in tropical areas, such as West Africa.Researchers have found that when the Iroko tree is grown in dry, acidic soil and treated with a combination of natural fungi(霉菌)and other bacteria, not only does the tree grow well, it also produces the mineral limestone in the soil around its root.The Iroko tree makes a mineral by combining Ca from the earth with CO2 from the atmosphere. The bacteria then create the conditions under which this mineral turns into limestone. The discovery offers a new way to lock carbon into the soil, keeping it out of theatmosphere. In addition to storing carbon in the trees, leaves and in the form of limestone, the mineral in the soil makes it more suitable for agriculture.The discovery could lead to reforestation(重新造林)projects in tropical countries, and help reduce carbon dioxide in the atmosphere in the developing world. It has already been used in West Africa and is being tested in Bolivia, Haiti and India.The findings were made in a three-year project involving researchers from the Universities of Edinburgh, Granada, Lausanne and Delft University of Technology. The project examined several microbiological methods of locking CO2 as limestone, and the Iroko-bacteria way showed best results. Work was funded by the European Commission under theFuture&Emerging Technologies (FET) scheme.Dr Bryne Ngwenya of the University of Edinburgh's School of GeoSciences, who led the research, said: "By taking advantage of this natural limestone-producing process, we have a low-tech, safe, readily employed and easily operating way to lock carbon out of the atmosphere, while improving farming conditions in tropical countries.”1. The passage is mainly introducing .A. some useful natural fungi and bacteriaB. a newly-found tree in West AfricaC. a new way to deal with greenhouse gasD. the soil-enriching limestone created by scientists2. Which of the following is True about tiny microbes?A. Most tiny microbes like living in dry, acidic soil.B. Tiny microbes get along well with the Iroko tree in special soil.C. The more greenhouse gas is, the more active tiny microbes become.D.CO2 can be broken down by natural fungi and bacteria.3. According to the passage, what can we infer?A. The action of the tiny microbes can increase the oxygen in the earth.B. Researchers have done the experiment on trees in Africa for three years,C. West Africa is one of the most polluted areas all over the world.D. Researchers tend to use natural power to solve their problem.4. According to the passage, the Iroko-bacteria method .A. has been popularized in Bolivia, Haiti and IndiaB. can save a lot of seriously destroyed woodsC. can be used to improve the farming landD. should be spread all around the world in the futurePassage 2Four years ago, we asked ourselves: what if we could create a shopping experience with no waiting in lines and no checkout? Or could we create a physical store where customers could simply take what they want and go? Our answer to those questions is Amazon Go, where you could experience the idea of “just walk out shopping”.Amazon Go is a new kind of store with no checkout required. We created the world’s most advanced shopping technology, so you never have to wait in line. With our “just walk out shopping” experience, simply use the Amazon Go app to enter the store, take the products you want, and go! No lines, no checkout.Our checkout-free shopping experience is made possible by the same types of technologies used in self-driving cars: computer vision, sensor fusion, and deep learning. Our “just walk out technology” automatically detects when products are taken fr om or returned to the shelves and keeps track of them in your virtual cart（虚拟购物车）. When you’ve done shopping, you can just leave the store. Shortly after, we’ll charge your Amazon account and send you a receipt(收据).We offer delicious ready-to-eat breakfast, lunch, dinner, and snack options made fresh every day by our on-site chefs and favorite local kitchens and bakeries. Our selection of foodstuff ranges from bread and milk to cheeses and locally made chocolates. You’ll find well-known brands we love, plu s special finds we’re excited to introduce to customers. For a quick home-cooked dinner, pick up one of our chef-designed Amazon Meal Kits, and you can make a meal for two in about 30 minutes.Our 1,800-square-foot shopping space is conveniently compact(紧凑的), so busy customers can get in and out fast. It is located at 2131, 7th Ave, Seattle, WA, on the corner of 7th Avenue and Blanchard Street. All you need is an Amazon account, a supported smartphone, and the free Amazon Go app.Amazon Go is currently only open to Amazon employees in our testing program, and will be open to the public soon.5. How can customers take away the products in Amazon Go?A. Ordering in advance.B. Paying by their credit card.C. Using the Amazon Go app.D. Opening their own account.6. In which field are the technologies similar to the one used in Amazon Go?A. Smartphones.B. Automatic door.C. Electric bikes.D. Self-driving cars.7. What is mainly discussed in Paragraph 4?A. When Amazon Go opens.B. Where Amazon Go lies.C. What Amazon Go sells.D. How Amazon Go works.8. What is the author’s purpose in writing the text?A. To encourage people to shop online.B. To tell people of a new concept store.C. To advise people to work for Amazon.D. To share a happy shopping experience.Passage 3Corals (珊瑚) are often described as undersea forests, but they are declining far more quickly than the Amazon. The coral reefs (礁) are likely to be among the first ecosystems to be wiped out by climate change.A temperature rise of just 1 to 2℃ can lead to the death of the algae (海藻) upon which corals depend, draining them of color and making the structure more fragile. These bleaching(脱色) events can be temporary if waters cool, but the more frequent they are and the longer they last, the greater the risk of damage is. But that’s exactly what is happening. Bleaching was first observed in 1983. It was seen on a global level in 1998, then 2010, and then from 2015 to 2017. Most available scientific evidence tells us that unless we do something to limit warming to 1.5℃, we will lose 99% of the world’s coral reefs in coming decades.But there are other threats beyond warming. Off the Philippine island of Palawan, its old reefs have been badly damaged by dirty water from the tourist holiday center, pollution from boats and overfishing. The area ought to be a shelter because it’s one of the ocean regions most bearable to climate change. “Even here, we are losing our corals,” said David Obura, chair of the Global Specialist Group in the International Union for the Conservation of Nature. “We need to reduce stress from overfishing, coastal development, pollution and tourism.”“I’m a generation of scientists watching them disappear. It’s very depressing,” Obura said. “Above 1.5℃, in about 50 years, they will be a treasure of historic movies and pictures, but very little to see in real life. Children born today may be the last generation to see coral reefs in all their glory.”9. How does the rising temperature affect corals?A. By damaging the algae.B. By darkening their color.C. By cutting their food resourcesD. By changing their structures temporarily.10. What happened after 2015 according to the text?A. Bleaching first became a global issue.B. The ocean’s temperature went up steadily.C. We lost 99% of the world’s coral reefs.D. World-wide coral bleaching lasted longer.11. What factor that threatens corals is stressed in Paragraph 3?A. Illegal fishing.B. Climate change.C. Ocean pollution.D. Global warming.12. What can be a suitable title for the text?A. Philippine’s coral reefs are under threat.B. Experts’ great concern on global warming.C. Record our undersea forests before it is too lateD. The next generation may never see the beauty of coral reefsPassage 4Orthopedic pillows are not just like any other ordinary pillow. These products are specially made to fulfill a specific function.People buy orthopedic pillows for several reasons. Sometimes people buy this type of pillow because their doctor has specifically recommended them to do so as part of a treatment and management plan for neck, back, or bone problems. In recent years, people have become more aware of the science behind orthopedic pillows, which accounts for the increase in thepopularity of these pillows. There has been a lot of available orthopedic pillow information for anyone interested. The science behind these pillows has also advanced significantly over the years, which means that orthopedic pillows are now more effective and useful than ever.Orthopedic pillows help you maintain the right gesture. While traditional pillows may be very comfortable, they do not necessarily promote the proper gesture as you sleep, which is proved to be important for your health. It also helps you avoid waking up with a host of body aches and pains. Among the most common causes of back and neck pains is sleeping without adequate support. Orthopedic pillows can provide you with the necessary support that will keep these kinds of body pains away. The pillow is specifically designed to conform to the natural contours (轮廓) of your body, thus ensuring that your skeletal structure is kept in proper alignment (直线) throughout the night and that no part of your body is subjected to too much pressure, which leads to pain.Of course, it is understandable that you may find an orthopedic pillow a bit uncomfortable the first time you use it, but that is true with any new experience. The materials used in manufacturing these pillows are ideal for the kind of sleep that you are looking for.Just like any product in the market, there is a disadvantage to an orthopedic pillow as well. They are usually more expensive than traditional pillows. But, if you treat the purchase as an investment on your health, it may be a lot easier for you to part with the cash.13. What makes orthopedic pillows increasingly popular?A. People's worries about sleep loss.B. Doctors' specific recommendation.C. The advancement of medical sciences.D．Their good effects on decreasing back and neck pains.14. Orthopedic pillows are superior to traditional pillows mainly in that .A. materials used in orthopedic pillows are much more idealB. orthopedic pillows promote the proper sleeping postureC. orthopedic pillows may make sleepers more comfortableD. people’s body pains will be cured by using orthopedic pillows15. What causes body pains when one is sleeping according to the passage?A. Proper alignment.B. A thick quilt.C. The skeletal structure.D. Lack of support.16. What does the author think of orthopedic pillows?A. They are just worth the price.B. They can bear a little pressure.C. They help cure people's disease.D. They have shortcomings in function.17. What is the passage mainly about?A. The impacts of pillows on people's health.B. The market prospect of orthopedic pillows.C. Benefits and drawbacks of using orthopedic pillows.D. Scientific secrets behind orthopedic pillows.答案一、真题在线Passage1（2019·全国I卷，D）【答案】32. C 33. A 34. B 35. A【文章大意】这是一篇说明文。