2020-2021高考英语阅读理解综合题汇编及答案解析
2020-2021高考英语阅读理解-经典压轴题含详细答案
一、高中英语阅读理解1．阅读理解A typical child plays many roles, such as friend, neighbor, son or daughter. Simply reminding children of that fact can lead to better problem-solving and more flexible thinking, according to new research from Duke University.Better problem-solving was just one positive finding of the study, said lead author Sarah Gaither, an assistant professor of psychology and neuroscience at Duke. After thinking about their own various identities, children also showed more flexible thinking about race and other social groupings—a behavior that could be valuable in an increasingly diverse society.In a series of experiments, Gaither and her colleagues looked at 196 children, ages 6 and 7. In an experiment, one group of children was reminded that they had various identities, such as son, daughter, reader or helper. A second group of children was reminded of their multiple physical attributes, such as a mouth, arms and legs. All the children then needed to handle a few tasksChildren who were reminded of their various identities showed stronger problem-solving and creative thinking skills. When shown pictures of a bear staring at honey-filled beehive(蜂窝)high up in a tree, these children had more creative ideas for how the bear might get the honey, such as turning over a bowl so that it became a stool(凳子). In other words, they saw a new use for the bowl. Children who were reminded of their multiple roles also showed more flexible thinking about social groupings. When asked to categorize different photos of faces, they suggested many ways to Spso. They identified smiling faces such as unsmiling ones, and old and young faces. The other children, meanwhile, primarily grouped people's faces by race and gender(性别).The-study suggests ways to promote flexible thinking for the young, which could be especially valuable for teachers." Gaither said."We have this tendency in our society to only think about ourselves in connection with one important group at a time," Gaither said. "When kids think that they have various identities, they show greater abilities."（1）What are all the kids asked to do in the experiments?A.Play different kinds of roles.B.Remind others of their roles.C.Approach several tasks.D.Classify a group of tasks.（2）How does the author mainly clarify the conclusions of the study in paragraph 4?A.By giving examples.B.By using experts' words.C.By listing a few figures.D.By showing cause and effect.（3）What can we learn from Sarah Gaither's words?A.Improving 5 kids flexible thinking ability is important teaching.B.Kids tend to behave selflessly after thinking about their roles.C.Kids' creative thinking ability is easy to discover and develop.D.Teachers are supposed to make the most of the kids' flexibility.（4）What is the best title for the text?A.Kids' Social Abilities Are Consistent with. Their Education.B.Considering Their Various Roles Improves Kids' Abilities.C.Kids Have a Variety of Identities in Their Daily Life.D.Problem-solving Ability Is Necessary for Most Kids.【答案】（1）C（2）A（3）A（4）B【解析】【分析】本文是一篇说明文，介绍了让孩子知道自己有不同的角色可以提高孩子解决问题的能力和创造性思维能力。
2020-2021高考英语压轴题专题复习——阅读理解的综合及详细答案
一、高中英语阅读理解1．（2019•浙江）阅读理解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.（1）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.（2）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.（3）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.（4）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 Soon.C. Why Are the Big Trees Important to California Forests?D. Patrick Mclntyre: Grow More Big Trees in California【答案】（1）A（2）D（3）C（4）A【解析】【分析】本文属于议论文，围绕加利福尼亚的大树从20世纪30年代以来大量减少为主题，探讨出现这一现象的原因。
高考英语综合题专练∶阅读理解附详细答案
一、高中英语阅读理解1．阅读理解Shark attacks not only disturb beach activities, but can affect associated tourist industries. Shark nets are a common solution to preventing shark attacks on beaches, but they cause dangers to sea ecosystems.Seeking a cost-effective way to monitor beach safety over large areas, we have developed a system called Shark Spotter. It combines artificial intelligence (AI), computing power, and drone (无人机) technology to identify and warn lifesavers to sharks near swimmers. The project is a cooperation between the University of Technology Sydney and The Ripper Group, which is pioneering the use of drones—called "Westpac Little Ripper Lifesavers"—in the search and rescue movement in Australia.SharkSpotter can detect sharks and other potential threats using real-time aerial imagery. The system analyses video from a camera attached to a drone to monitor beaches for sharks, send warnings, and conduct rescues. Developed with techniques known as "deep learning", the Shark Spotter system receives imagery from the drone camera and attempts to identify all objects in the scene. Once certain objects are detected, they are put into one of 16 categories: shark, whale, dolphin, rays, different types of boats, surfers, and swimmers.If a shark is detected, Shark Spotter provides both a visual sign on the computer screen and an audible warning to the operator. The operator confirms the warning and sends text messages from the Shark Spotter system to the Surf Life Savers for further action. In an emergency, the drone is equipped with a lifesaving flotation pod (漂浮仓) together with an electronic shark repellent (驱逐装置) that can be dropped into the water in cases where swimmers are in severe trouble, trapped in a rip, or if there are sharks close by.In January 2018, the Westpac Little Ripper Lifesavers was used to rescue two young swimmers caught in a rip at Lennox Head, NSW. The drone flew down the beach some 800 meters from the lifeguard station, and a lifesaving flotation pod was dropped from the drone. The complete rescue operation took 70 seconds.We believe Shark Spotter is a win-win for both marine life and beachgoers. This unique technology combines dynamic video image processing AI and advanced drone technology to creatively deal with the global challenge of ensuring safe beaches, protecting environments, and promoting tourism.（1）A Shark Spotter is ________.A. a solution to monitor sharksB. an equipment to identify lifesaversC. a technology to prevent shark attacksD. a project to pioneer the use of drones（2）When a shark is spotted near a swimmer, the system will ________.A. take timely actionB. analyze the visual dataC. classify the identified objectsD. turn on "deep learning" mode（3）The example in the 5th paragraph shows us that the system is ________.A. efficient in saving livesB. effective in detecting sharksC. smart in driving sharks awayD. practical over the whole sea area（4）What is the author's attitude towards the future of SharkSpotter?A.Doubtful.B.Optimistic.C.Negative.D.Objective.【答案】（1）C（2）A（3）A（4）B【解析】【分析】本文是一篇说明文，介绍了一种旨在防止鲨鱼袭击的技术Shark Spotter 的工作原理以及重要意义。
2020-2021高考英语一模试题分类汇编——阅读理解综合附答案
一、高中英语阅读理解1．Choose the one that fits best according to the information given in the passage you have just read."The history of the world is but the biography (传记) of great men," argued Thomas Carlyle, the advocate of what has come to be known as the "Great Man Theory of History." This theory suggests that the broader movements and outline of history all go back to the leadership of great individuals who had unique influence on their times. Whether or not Carlyle's theory proves true is debatable, but that certain individuals cast long shadows is not.As one who is entrusted with a leadership position, I find it profitable to read of others who have led. Wherever you find me, you'll likely find a good biography nearby. Why is this the case? First, I find good biographies fascinating. I'll occasionally read a novel, but I've never been overly drawn to fiction. I have found myself unable to sleep while in the struggle of the Battle of Britain in William Manchester's The Last Lion. For me, not to read biographies would rob me of pleasure in my life.Second, I find good biographies informative. A good biographer tells not only the story of a person, but also of their times. Reading a good biography is like wandering through an intellectual shopping mall. The first store is what drew you there, but you will be pleasantly surprised along the way at what other items grab your attention. You'll find no better account of the British Empire at its peak than the opening chapters of Manchester's Visions of Glory, volume one of his The Last Lion. Strictly speaking, a biography is but a slice of history.Third, I find good biographies relaxing. Winston Churchill once noted a man who works with his hands should have a hobby that engages his mind, and a man who works with his mind should have a hobby that engages his hands. Another way to apply Churchill's saying is to combine technical, pen-in-hand vocational reading with leisurely biographical reading. Indeed, few things are more relaxing to me than winding down the evening and entering into another world.This is why I love reading good biographies, and why I pity the person who neglects them. Don't be counted among their number.（1）What is implied in the first paragraph?A. The author finds Carlyle's theory undebatable.B. Carlyle believes great men alone cannot create history.C. It is debatable whether one should read great men's biographies.D. The author agrees that history is greatly influenced by certain men.（2）What does the underlined phrase "other items" in the third paragraph refer to?A. good biographiesB. stories of certain timesC. the volumes of The Last LionD. the chapters of the British Empire（3）Which of the following statements is TRUE?A. The author considers biographical reading enjoyable.B. The author can travel to another world in the evening.C. The author has fought many battles during his lifetime.D. The author profits commercially by reading biographies.（4）What is the author's main purpose in writing the article?A. To analyze the benefits of vocational reading.B. To introduce to readers his unique reading strategies.C. To present great men's history through biography reading.D. To recommend biography reading through his own experiences.【答案】（1）D（2）B（3）A（4）D【解析】【分析】本文是一篇议论文，作者阐述了喜欢读好的传记的原因。
2020-2021高考英语 阅读理解综合试题附详细答案
一、高中英语阅读理解1．阅读理解Garbage sorting has become a hot issue around China, especially after Shanghai began carrying out a regulation on July 1.Beijing, as a forerunner in environmental protection, has thus been expected to follow suit. The capital of the country has long been campaigning for sorting and recycling household waste, as part of its environmental drive for sustainable growth, local media reported.The current regulation gives garbage sorting responsibilities to government departments, property management groups and other organizations. It also gives rules for companies, outlining how they're responsible for waste collection, transportation and treatment. Only individuals are not subject to responsibilities.The long-awaited revision will soon change the situation, "Taking out the trash without sorting it properly will be illegal," said Sun Xinjun, director of the Beijing Commission of Urban Management. In Shanghai, violators are now fined up to 200 yuan ($30)for trash-sorting violations. The maximum fine in Beijing will not be less than that, he said.The Beijing city government first set out to promote garbage sorting in 2009. Authorities have since called on citizens to sort their household waste into four types-recyclable waste, kitchen trash, dangerous waste and others-and leave it in a corresponding dustbin or trash can. Blue-colored dustbins signify items within are recyclable, green represents kitchen trash, red corresponds to dangerous materials and grey to other waste.To promote the awareness of garbage sorting and expand the base of participants, authorities have employed workers to help residents on the spot. With intelligent devices, those who throw in recyclable waste at given sites will be rewarded with bonus points, which can be used to buy daily goods. At some communities, there are no color-coded dustbins. Instead, a scheduled garbage collection service is offered to help improve the environment. In other communities, workers offer a door-to-door service to collect recyclables or kitchen waste.Beijing Environmental Sanitation Engineering Group has been promoting new garbage sorting facilities such as recycling cabinets and smart kitchen waste trash cans since 2016, Xinhua News Agency reported. Nearly 26,000 metric tons of household waste is generated across Beijing on a daily basis and 29 terminal garbage disposal facilities are working at full capacity. Nearly 9.3 million tons of household waste was processed in the city last year.（1）According to the passage, which dustbins should some used coke cans be thrown into?A. Grey-colored dustbins.B. Red-colored dustbins.C. Green-colored dustbins.D. Blue-colored dustbins.（2）We can learn from the passage that ________.A. new technology has been applied to help deal with garbageB. Beijing carried out a more severe rule on garbage sorting than ShanghaiC. the change of the current regulation has aroused objection among citizensD. the amount of household waste in Beijing is far from something disturbing（3）What is the best title for the text?A.How to Sort Garbage in ChinaB.The Current Regulation in BeijingC.Garbage Collection in BeijingD.Waste Recycling Project Counts（4）The passage can be sorted as ________.A.a book reviewB.a travel brochureC.an environment reportD.a geography essay【答案】（1）D（2）A（3）C（4）C【解析】【分析】本文是一篇说明文，介绍了垃圾分类在北京的实施情况。
2020-2021高考英语阅读理解(大题培优)及详细答案
一、高中英语阅读理解1．阅读理解City trees grow faster and die younger than trees in rural forestry, a new study finds. Over their lifetimes, then, urban trees will likely absorb less CO2 from the air thah forest trees.As we all know, the earth would be freezing or burning hot without CO2. However, CO2is a greenhouse gas, meaning it traps energy from the sun as/heat. That makes temperatures near the ground rise. Human activities, especially the widespread burning-of fossil(化石)fuels, have been sending extra greenhouse gases into the air. This has led to a rise in average temperatures across the globe.Studies had shown forests readily absorb CO2, but there hadn't been much data on whether city trees grow, die and absorb CO2at the same rate as forest trees do. So some researchers decided to find out.To figure out how quickly trees were growing, researchers tracked their diameters (the width of their trunks) between 2005 and 2014. A tree's diameter increases as it grows, just as a person's waist size increases as they gain weight. About half the weight of a tree is carbon, research has shown. Most of the rest is water. Over the nine years' tracking, the researchers found city trees absorbed four times as much carbon from the air as forest trees. However, they were twice as likely to die. So over the lifetime of each type of tree, forest trees actually absorbed more CO2.City trees grew faster because they had less competition for light from their neighbors. In a forest, trees tend to grow close together, shading their neighbors. Street trees also benefit from higher levels of nitrogen (氮)in rainwater. Nitrogen helps plants grow. Waste gases from gas-burning cars also contain nitrogen, thus enriching city air with nitrogen. Later, rainwater may wash much of it to the ground. Some street trees may also have better access to water than trees in the country because the underground water pipes can leak.（1）What can he known about CO2 from paragraph 2?A. It is one of the side effects of greenhouses.B. It greatly accelerates the process of global warming.C. It results from the widespread burning of fossil fuels.D. It prevents the earth from becoming unsuitable to live on.（2）Why did researchers track the diameters of trees?A. To know about their growth rates.B. To find out how much they weigh.C. To check whether they were healthy.D. To assess the carbon amounts in them.（3）What advantage do city trees have over forest trees?A. They are more likely to access growth promoters.B. They can enjoy more water coming from the air.C. They can enjoy more shade from neighbors.D. They are better at competing for light.（4）What will probably be talked about if the passage is continued?A. How urban trees can live longer.B. Why city living makes trees die young.C. How trees respond to dry soil conditions.D. Why faster-growing trees absorb more CO2.【答案】（1）D（2）A（3）A（4）B【解析】【分析】本文是一篇说明文，一项新的研究发现：与长在森林中的树木相比，城市里的树木长得更快，但死得更早。
2020-2021年考英语完形填空和阅读理解及答案
2020-2021年考英语完形填空和阅读理解及答案一、完形填空1．完形填空Since my mother moved to live with us in the city, she has been much heavier than before.As time went by, her health got 1 . So I had to take her to see a 2 . My mother was told to lose weight by doing exercise every day. She had no choice but to follow 3 the doctor said. I told her that I would exercise with her every morning.On the first morning, she got up very early 4 ran with me in our neighborhood. I tried to run slowly so that she could follow me. After 5 for some minutes, I told her the proper ways of exercise and the importance of eating healthy food. She listened to me carefully. It made me 6 that she told me everything very patiently when I was a kid. On the second morning, I praised her for keeping running with me.But after two weeks, she wanted to 7 running because she thought the two-week exercise didn't work at all. To encourage her, I taught her how to use the facilities（设施）for exercise in our 8 . She began to exercise again.With my help, it 9 her one month to develop a good habit of daily exercise. "Thank you, my dear daughter. Exercise brings health and happiness to me. I will 10 worry about my health. "Her words touched my heart deeply. I felt happy to make a big difference to my mother's life.1. A. better B. stronger C. worse D. thinner2. A. teacher B. waiter C. nurse D. doctor3. A. that B. what C. which D. where4. A. and B. but C. so D. or5. A. swimming B. running C. playing D. eating6. A. act B. expect C. forget D. remember7. A. give up B. eat up C. set up D. put up8. A. school B. hospital C. neighborhood D. cinema9. A. cost B. spent C. took D. paid10. A. never B. ever C. sometimes D. always【答案】（1）C；（2）D；（3）B；（4）A；（5）B；（6）D；（7）A；（8）C；（9）C；（10）A；【解析】【分析】文章大意：妈妈搬到城里与我们住在一起，她变得比以前胖了很多，医生建议她每天锻炼。
2020-2021高考英语备考之阅读理解压轴突破训练∶培优易错试卷篇附答案解析(1)
一、高中英语阅读理解1．阅读理解When I was a kid, I was the girl who kept the training wheels on my bike as long as possible. Even my younger sister had got rid of them much earlier than me. But as I began to grow older, this changed.All this happened on the Bike Safety Day. It is supposed to be a fun day at school when all of us kids bring our bikes to school and the school provides us with the opportunity to ride outside and learn proper bike safety. Sounds like fun, right? No. In fact, it caused me to panic. What was I going to say when my friends asked me about my training wheels?With the pressure of everyone seeing my training wheels, I determined to let them go. This was the first big change I'd ever made on my own.I went to my parents and told them all about my dilemma. They were more than happy to help. We went outside and got my bike. Instead of running away and hiding behind, I stood in front of my bike and took great pride in my decision as my dad removed the training wheels.I got on and steadied myself. My heart raced but my feet and hands were calm. My dad started to push before my feet even moved and suddenly I was off. The fear faded away and a relaxed mind came into its place. It was crazy to think how quickly I learned something that took so long for me to even try!My confidence soared. This was going to be the start of a brand new world for me. My accomplishment would carry me forth to new goals and wins. I realized that if I set my mind to something, I could achieve it.（1）What does the school expect the students to do on Bike Safety Day?A. Have their bikes checked.B. Ride outside for fun.C. Acquire bike safety skills.D. Remove the training wheels.（2）What does the underlined word "them" (in Paragraph 3)refer to?A. The author's friends.B. The author's parents.C. The safety problems.D. The training wheels.（3）What happened when the author finally rode without the training wheels?A.She felt extremely embarrassed.B.Everything turned out to be easy.C.She ended up flat on the ground.D.Her sisters followed her example.（4）What does the author think is necessary for her to achieve a goal?A.Patience.B.Determination.C.Pressure.D.Concentration.【答案】（1）C（2）D（3）B（4）B【解析】【分析】本文是一篇记叙文，讲述了作者学习骑自行车的故事，学会了骑自行车让作者拥有了自信，也让作者意识到决心的重要性。
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一、高中英语阅读理解1．阅读理解Gemini ManGemini Man is a big-budget Hollywood sci-fi-action movie based on an original concept, rather than on a superhero comic or an old TV series, even though this particular original concept is more 20 years old. In it a government assassin (杀手)is being hunted down by his own clone The original script was sold by Darren Lemke to a studio in 1997, and since then almost every male A-listener has been attached as a potential star. Now, at long last, Ang Lee has directed Gemini Man, and Will Smith plays both the veteran assassin and his much younger doppelganger (分身).Jojo RabbitDuring World War Two, a 10-year-old German boy (Roman Griffin David) is desperate to be a dutiful Nazi, only to discover that his mother (Scarlett Johansson) is hiding, a Jewish girl (Thomasin McKenzie) in their house. It may not sound like the stuff of a big-hearted comedy but Taika Waititi can make anything warm and funny. As well as writing and directing Jojo Rabbit, Waititi co-stars as the boy's imaginary friend,a nitwitted Adolf Hitler.Doctor SleepMike Flanag's new film is adapted from Stephen King, novel, Doctor Sleep, which was a sequel (续集) to The Shining. You can expect to see blood flowing out of lifts in a rapid stream, ghostly twin girls and headache-including carpet patterns. Ewan McGregor stars as Danny Torrance, the boy with psychic powers m 1980 film. Now, he is a middle-aged hospital counsellor. Maleficent: Mistress of EvilHere's another chance to see Angelina Jolie. In 2014 she starred in Maleficent, Disney's live-action remake of the Sleeping Beauty cartoon from 1959. The twist was that the eponymous wicked fairy wasn't so wicked, after all, and that the real villain was the father of Princess Aurora (Elle Fanning). The sequel's subtitle promises that Maleficent will actually be evil this time around, her change of heart prompted by Aurora's engagement to handsome prince (Harris Dickinson).（1）What can we learn from this passage?A. Ewan McGregor plays a role in Doctor Sleep.B. Taika Waititi is the main character in Jojo Rabbit.C. Gemini Man is adapted from a 20-yem--old TV series.D. The real wicked character in Maleficent: Mistress of Evil is Aurora.（2）If your friend wants to see a horror movie, which one will you recommend?A. Gemini ManB. Jojo BabbitC. Doctor SleepD. Maleficent: Mistress of Evil【答案】（1）A（2）C【解析】【分析】本文是一篇应用文，介绍了四部电影。
（1）考查细节理解。
根据Doctor Sleep部分中的“Ewan McGregor stars as Danny Torrance, the boy w ith psychic powers in 1980 film.”可知Ewan McGregor在电影Doctor Sleep扮演Danny Torrance的角色。
故选A。
（2）考查推理判断。
根据Doctor Sleep部分中的“You can expect to see blood flowing out of lifts in a rapid stream, ghostly twin girls and headache-including carpet patterns.”可知电影里有血腥场景，可怕的双胞胎姐妹和让人头痛的地毯图案，故推测喜欢看恐怖电影的人，会选择Doctor Sleep这部电影。
故选C。
【点评】本题考点涉及细节理解和推理判断两个题型的考查，是一篇介绍类阅读，考生需要准确掌握细节信息，并根据上下文进行逻辑推理，从而选出正确答案。
2．阅读理解Some things should just be common knowledge by now. The Earth isn't flat. Nope, your hair and nails don't grow after you die. The holes at the top of Bic biro pens are there so that, if you swallow one accidentally, you can still breathe and won't choke to death. It's debatable whether that last one there is common knowledge or not. A quick Google search of the fact, rewritten as a question, shows articles addressing this point going back several years, with the latest (re)appearing just this week over on ScienceAlert. We suppose it's one of those things that come up from time to time, like what would happen if you attack Yellowstone with a nuclear weapon (not much, as it turns out).If you jump over to Bic's website, under their FAQs (frequently asked questions), it quite clearly states: "The reason that some BIC® pens have a hole in their cap is to prevent the cap from completely obstructing the airway if accidentally breathed in. This is requested by the international safety standards ISO11540, except for in cases where the cap is considered too large to be a choking risk."That's rather lovely of them. In appreciation of their want to not kill off their more clumsy customers, we thought we'd share a few more random facts about Bic that are probably going to come up in a pub quiz one day. Did you know, for example, that each Bic ballpoint pen can produce at least 2 kilometers (1.2 miles) of ink before it begins to run out? In fact, in 2018, 7,250 kilometers (4,505 miles) of writing tests on such pens were carried out on ballpoint pens, gel pens(中性笔), and rollers to make sure they worked to the highest standard.The best part of the Bic site, however, is this rather curious fact: "100 percent of pen balls are made through a highly-controlled process." As opposed to a highly uncontrolled process, involving explosions and bouncy castles and total chaos, we suppose.（1）Why does the author mention the case of Yellowstone?A. To list the facts.B. To prove his point.C. To compare the two situations.D. To emphasize the importance of safety.（2）What does the underlined word "obstructing" in paragraph 2 mean?A. Block.B. Open.C. Transform.D. Narrow.（3）Why were the writing tests on pens carried out?A. To work out their lifespan.B. To assure their good quality.C. To prove some random facts.D. To compare different pens with each other.（4）In what tone does the author develop the text?A. Critical.B. Acid.C. Humorous.D. Serious.【答案】（1）B（3）B（4）C【解析】【分析】本文是一篇说明文，毕克笔的笔帽上有一个小孔是为了防止那些粗心的使用者不小心吞下而窒息死亡。