2020届山东省济宁市高三3月月考英语试题及答案解析

山东省济宁市汶上县第一中学2020年高一英语月考试卷含解析一、选择题1. It’s the third time that she has won the face，_____has surprised us all.A．that B．where C．which D．what参考答案：C【考点】定语从句【试题解析】分析句子，这是一个非限制性定语从句，在从句中缺少主语，而先行词是前面的整个句子，故关系代词用which。

根据句意，可知选C。

句意：这是她第三次赢得了面子，这使我们非常惊讶。

2. Listen to Li Yang, founder of Crazy English. He speaks English _____ he were American.A. ifB. becauseC. even ifD. as ifks5u参考答案：D3. The English spoken in England before 1150 was very different from _______ English we speak at present. English now is also spoken as ________ second language in South Asia.A. /; aB. /; theC. the; theD. the; a参考答案：D4. ----Are you still busy?----Ye s, I ________ my work, and it won’t take long.A. just finishB. am just going to finishC. have just finishedD. am just finishing参考答案：D5. The high school students have already remembered _____useful English words and expressions.A. a great manyB. a good amount ofC. a great deal ofD. a plenty of参考答案：A6. Mr. Bush is on time for everything. How ________ it be that he was late for the opening ceremony.A. canB. shouldC. mayD. must参考答案：A7. Madam Curie was given the Nobel Prize for her contributions________ of chemistry.A．in place B．in the areaC．proud D．instead参考答案：Bin the area of...在……领域。

山山山2020-2021山山山山山山山山3山山山山山山山-山山山山山山山东省菏泽市郓城县第一中学2020-2021学年高一下学期第一次月考英语试题阅读下面短文, 在空白处填入1个适当的单词或括号内单词的正确形式。

What we eat every day does affect our health. Therefore, we should try our best to change our bad eating habits and have a 56___________ (balance) diet. As we all know, fried food 57___________(taste) delicious, but eating too much will probably lead to some illnesses. Worse still, a lot of money 58______________ (waste) on some junk food, which is not healthy at all. As a matter of fact, our eating habits are changing for the worse. We used 59___________ (eat) more grains and vegetables, but less meat, 60__________ is a good eating habit. However, things are 61_____________ (extreme) different now. With our life 62_______________(become) better and better, we are now eating a lot of food that is high in both sugar and fat. Some young people even make it 63_________ rule to eat out every month without considering the balance of our diet. The food we eat has a great effect 64_________ our health, so in order to have a healthy life, we must make right 65__________ (choose) and keep in mind that we are what we eat.【答案】56.balanced 57. tastes 58. is wasted 59. to eat 60. which61. extremely 62. becoming 63. a 64. on 65. choices山东省济南市长清区第一中学2020-2021学年高一下学期第一次质量检测英语试题第二节(共10小题；每小题1.5分，满分15分)阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。

2020届高三上学期英语第一次月考英语试卷一、单选题（本大题共15小题，共15分）1. As _______ monitor of our class, Jason has _______ great responsibility to get the class to work together as a team.A . a；theB . 不填；aC . a；不填D . a；a2. The new playground to be built next year will be ____________ the old one.A . as three times big asB . three times as big asC . as big as three timesD . as big three times as3. We can observe that artificial intelligence has already made a ________ on our lives in many waysA . statementB . impactC . impressionD . judgment4. She often ________ her daughter on the way home after work.A . joins upB . looks upC . picks upD . takes up5. Television is more than an electronic equipment; it _____ a powerful tool for communication.A . was becomingB . has becomeC . had becomeD . will become6. Let’s not pick these peaches until this weekend ___________they get sweet enough to be eaten.A . ever sinceB . as ifC . even thoughD . so that7. The quality of education in this small school is better than ______ in some larger schools.A . thatB . oneC . itD . this8. With two children _____ middle school in the nearby town now, theparents are working hard.A . to attendB . attendingC . attendedD . having attended9. As far as I know, education is about learning. The more you learn, _______.A . the better for life are you preparedB . the better you are prepared for lifeC . the better life are you prepared forD . you are prepared the better for life10. Sherlock Holmes is famous ____ a detective as he is known ___ everybody ____ his quick thinking and careful observation.A . as; to; forB . to; for; byC . for; to; asD . to; as; for11. If we had taken such effective________much earlier, the river would not be polluted so seriously now.A . treasuresB . effortsC . measuresD . actions12. It’s the third time that I _________ you _________ your promise.A . reminded; aboutB . have reminded; ofC . reminded; ofD . have reminded; about13. ___ in London, the penniless American wandered on the pavement, ___ to find a job to make a living.A . Lost; hopedB . Losing; hopedC . Lost; hopingD . Losing; hoping14. It suddenly occurred to him ____ he had left his keys in the office.A . thatB . whatC . whereD . which15. There was snow everywhere ______ the shapes of things were difficult to identify.A . so thatB . now thatC . for fear thatD . on condition that二、完形填空（本大题共20小题，共30分）16. 完形填空At my heaviest I weighed 370pounds. I had a very poor relationship with food: I used it to 1bad feelings, to make myself feel better, andto celebrate. Worried about my health, I tried many different kinds of 2but nothing worked.I came to believe that Icould do nothing about my 3.When I was 50, my weightproblem began to affect me 4.I didn’t want to live the rest of my life with this 5weight any more.That year, I6a seminar where we were asked to create aproject that would touch the world. A seminar leader shared her 7story —she had not only 125 pounds, butalso raised $25,000 for homeless children.8by her story, I created the As We Heal, the World Heals 9.My goal was to lose 150 pounds in one year and raise $50,00010a movement founded 30 years ago to end hunger.This combination of healing myself and healing the world 11me as the perfect solution.12Ibegan my own personal weight program, I was filled with the fear that I would 13the same difficulties that beat me before.While the 14hung over my head, there were also signs thatI was headed down the right 15. I sent letters to everyone I knew,telling them about my project. It worked perfectly. Donations began 16infrom hundreds of people.Of course, I also took some practicalsteps to lose weight. I consulted with a physician, Ihired a fitness coach, and I began to eat small and 17meals. My fund-raising focus also gave me newmotivation to exercise 18.A year later, I19my goal: I lost 150 pounds and raised $50,000!I feel that I’ve been given a second life to devote to something that is 20and enormous.（1）A . addB . mixC . killD . share（2）A . dietsB . drinksC . fruitsD . dishes （3）A . heightB . abilityC . wisdomD . weight（4）A . temporarilyB . recentlyC .seriouslyD . secretly（5）A . idealB . extraC . normalD . low（6）A . attendedB . organizedC . recommendedD . mentioned（7）A . folkB . successC . adventureD . science（8）A . SurprisedB . AmusedC . InfluencedD . Disturbed（9）A . projectB . businessC . systemD . custom（10）A . in search ofB . in need ofC . in place ofD . in support of（11）A . scaredB . consideredC . confusedD . struck（12）A . AsB . UntilC . IfD . Unless（13）A . get overB . run intoC . look forD . put aside（14）A . excitementB . joyC . angerD . fear（15）A . rowB . hallC . pathD . street（16）A . breakingB . floodingC . jumpingD . stepping（17）A . heavyB . fullC . expenseD . healthy（18）A . regularlyB . limitlesslyC . suddenlyD . randomly（19）A . setB . reachedC . missedD . dropped（20）A . stressfulB . painfulC . meaningfulD . peaceful三、阅读理解（本大题共20小题，共50分）17. 阅读理解Ancient Chinese folk paintings and manyother art styles have been passed down from generation to generation, and arestill practised in different parts of China. Here’s a look at four uniqueChinese folk art forms.Chinese Opera isthe traditional form of Chinese drama. According to incomplete statistics, inChina’s various ethnic regions there are about more than 360 kinds of operas.The most famous ones include Peking Opera, Kunqu Opera, Yueju Opera, YujuOpera, Sichuan Opera, Fujian Opera, Hebei opera, Huangmei Opera arid so on, intotal more than 50, among which Peking Opera is the most popular in China.Shadow Play dates back to Western Han Dynasty in Shaanxi more than 1,000 years ago. Themoving figures, usually carved out from leather, are operated by folk artists,accompanied by music and singing. It is the world’sfirst dubbed motion picture art form, thus considered the “ancestor”of modern film. Today this art form is still popular in northern China.Paper-cutting isone of the most popular traditional decorative arts in China with a longhistory. Paper-cutting can be seen across China and it has even developed intodifferent local genres . They are usuallyused to decorate gates and windows during festivals.The Kite was invented byChinese people. According to legend the earliest kite in China was a woodenbird by Mo Di in the Eastern Zhou Dynasty. Later his student Lu Ban improvedthe tech and used bamboo as material to make a kite. Today, various kite-flyingactivities can be found in different regions of China. Shandong Weifang KiteFestival is held every year and attracts lots of kite lovers and travelers.（1）Which Chinese Opera is the most popular in China?A . Peking Opera.B . Kunqu Opera.C . Yueju Opera.D . Yuju Opera.（2）Why is Shadow Play considered the ancestor of modern film?A . It has a history of more than 1,000 years.B . It was operated by ancient folk artists.C . It is accompanied by music and dances on the stage.D . It is the world’s first dubbed motion picture art form.（3）What does the underlined word “They” in Paragraph 4 refer to?A . Different local genres.B . Traditional decorative pictures.C . Paper-cutting art works.D . Popular Chinese handwriting.（4）What was the earliest kite made of in China?A . Paper.B . Wood.C . Bamboo.D . Leather.（5）What is the main topic of this article?A . Chinese folk art.B . Chinese folk paintings.C . Chinese operas.D . Chinese folk plays.18. 阅读理解There’s a new frontier in 3D printingthat’s beginning to come into focus: food. Recent development has made possiblemachines that print, cook, and serve foods o n a mass scale. And the industryisn’t stopping there.Food productionWith a 3D printer, a cook canprint complicated chocolate sculptures and beautiful pieces for decoration on awedding cake. Not everybody can do that — it takes years of experience, buta printer makes it easy. A restaurant in Spain uses a Foodini to”re-create forms and pieces” of food that are “exactly thesame,” freeing cooks to complete other tasks. In another restaurant, allof the dishes and desserts it serves are 3D-printed, rather than farm to table.SustainabilityThe global population is expectedto grow to 9.6 billion by 2050, and some analysts estimate that food productionwill need to be raised by 50 percent to maintain current levels. Sustainabilityis becoming a necessity. 3D food printing could probably contribute to thesolution. Some experts believe printers could use hydrocolloids from plentiful renewables like algae and grass to replace the familiar ingredients. 3D printing can reduce fuel use and emissions. Grocery stores of the future might stock “food” that lasts years on end, freeing upshelf space and reducing transportation and storage requirements.NutritionFuture 3D food printers couldmake processed food healthier. Hod Lipson, a professor at Columbia University,said, “Food printing could allow consumers to print food with customizednutritional content, like vitamins. So instead of eating a piece of yesterday’sbread from the supermarket, you’d eat something baked just for you ondemand.”ChallengesDespite recent advancements in3D food printing, the industry has many challenges to overcome. Currently, mostingredients must be changed to a paste before a printer can use them,and the printing process is quite time-consuming, because ingredients interactwith each other in very complex ways. On top of that, most of the 3D foodprinters now are restricted to dry ingredients, because meat and milk productsmay easily go bad. Some experts are skeptical about 3D food printers, believingthey are better suited for fast food restaurants than homes and high-endrestaurants.（1）What benefit does 3D printing bring to food production?A . It helps cooks to create new dishes.B . It saves time and effort in cooking.C . It improves the cooking conditions.D . It contributes to restaurant decorations.（2）What can we learn about 3D food printing from Paragraphs 3?A . It solves food shortages easily.B . It quickens the transportation of food.C . It needs no space for the storage of food.D . It uses renewable materials as sources of food.（3）According to Paragraph 4, 3D-printed food ________.A . is more available to consumersB . can meet individual nutritionalneedsC . is more tasty than food in supermarketsD . can keep all the nutrition in raw materials（4）What is the main factor that prevents 3D food printing from spreading widely?A . The printing process is complicated.B . 3D food printers are too expensive.C . Food materials have to be dry.D . Some experts doubt 3D food printing.（5）What could be the best title of the passage?A . 3D Food Printing: Delicious New TechnologyB . A New Way to Improve 3D Food PrintingC . The Challenges for 3D Food ProductionD . 3D Food Printing: From Farm to Table19. 阅读理解Failure is probably the most exhaustingexperience a person ever has. There is nothing more tiring than not succeeding.We experience this tiredness intwo ways: as start-up fatigue and performance fatigue. In the former case, we keepputting off a task because it has either too boring or too difficult. And thelonger we delay it, the more tired we feel.Such start-up fatigue is veryreal, even if not actually physical, not something in our muscles and bones.The solution is obvious though perhaps not easy to apply: always handle themost difficult job first.Years ago, I was asked to write102 essays on the great ideas of some famous authors. Applying my own rule, Idetermined to write them in alphabetical, never letting myself leaveout a tough idea. And I always startedthe day’s work with the difficult taskof essay-writing. Experience proved that the rule works.Performance fatigue is moredifficult to handle. Though willing to get started, we cannot seem to do thejob right. Its difficulties appear so great that, however hard we work, we failagain and again. In such a situation, I work as hard as I can-then let theunconscious take over.When planning EncyclopaediaBritannica , I had to create a table of contents based on the topics of itsarticles. Nothing like this had ever been done before, and day after dat I keptcoming up with solutions, but none of them worked. My fatigue became almostunbearable.One day, mentally exhausted, Iwrote down all the reasons why this problem could not be solved. I tried toconvince myself that the trouble was with the problem itself, not with me.Relived, I sat back in an easy chair and fell asleep.An hour later, I woke upsuddenly with the solution clearly in mind. In the weeks that followed, thesolution which had come up in my unconscious mind provided correct at everystep. Though I worked as hard as before, I felt no fatigue. Success was now asexciting as failure had been depressing.Human beings, I believe musttry to succeed. Success, then, means never feeling tired.（1）People with start-up fatigue are most likely to .A . delay tasksB . work hardC . seek helpD . accept failure（2）What does the author recommend doing to prevent start-up fatigue?A . Writing essays in strict order.B . Building up physical strength.C .Leaving out the toughest ideas.D . Dealing with the hardest task first.（3）On what occasion does a person probably suffer from performance fatigue?A . Before starting a difficult task.B . When all the solutions fail.C . If the job is rather boring.D . After finding a way out.（4）According to the author, the unconscious mind may help us .A . ignore mental problemsB . get some nice sleepC . gain complete reliefD . find the right solution（5）What could be the best title for the passage?A . Success Is Built upon FailureB . How to Handle Performance FatigueC . Getting over Fatigue: A Way to SuccessD . Fatigue: An Early Sign of Health Problems20. 阅读理解A scientist working at her lab bench and asix-old baby playing with his food might seem to have little in common. Afterall, the scientist is engaged in serious research to uncover the very nature ofthe physical world, and the baby is, well, just playing…right? Perhaps,but some developmental psychologists have argued that this “play” is morelike a scientific invest igation than one might think.Take a closer look at the babyplaying at the table. Each time the bowl of rice is pushed over the table edge,it falls in the ground---and, in the process, it belongs out important evidenceabout how physical objects interact; bowls of rice do not flood in mid-sit, butrequire support to remain stable. It is likely that babies are not born knowingthe basic fact of the universe; nor are they everclearly taught it. Instead,babies may form an understanding of object support through repeated experimentsand then build on this knowledge to learn even more about how objects interact.Though their ranges and tools differ, the baby’s investigation and thescientist’s experiment appear to share the same aim, overall approach , and logic.Some psychologists suggest thatyoung children learn about more than just the physical world in this way---thatthey investigate human psychology and the rules of language using similarmeans. For example, it may only be through repeated experiments, evidence gathering,and finally overturning a theory, that a baby will come to accept the idea thatother people can have different views and desires from what he or she has, forexample, unlike the child, Mommy actually doesn’t like Dove chocolate.Viewing childhood developmentas a scientific investigation throws on how children learn, but it also offersan inspiring look at science and scientists. Why do young children andscientists seem to be so much alike? Psychologists have suggested that scienceas an effort ---the desire to explore, explain, and understand our world---issimply something that comes from our babyhood. Perhaps evolution provided humanbabies with curiosity and a natural drive to explain their worlds, and adultscientists simply make use of the same drive that served them as children. Thesame cognitive systems that make young children feel good about feel good aboutfiguring something out may have been adopted by adult scientists. As somepsychologists put it, “It is not that children are little scientis ts butthat scientists are big children.”（1）According to some developmental psychologists .A . a baby’s play is nothing more than a gameB . scientific research into babies; games is possibleC . the nature of babies’ play has been thoroughly investigatedD . a baby’s play is somehow similar to a scientist’s experiment （2）We learn from Paragraph 2 that .A . scientists and babies seem to observe the world differentlyB . scientists and babies often interact with each otherC . babies are born with the knowledge of object supportD . babies seem to collect evidence just as scientists do（3）Children may learn the rules of language by .A . exploring the physical worldB . investigating human psychologyC . repeating their own experimentsD . observing their parents’ behaviors （4）What is the main idea of the last paragraph?A . The world may be more clearly explained through children’s play.B . Studying babies’ play may lead to a better understanding of science.C . Children may have greater ability to figure out things than scientists.D . One’s drive for scientific research may become stronger as he grows.（5）What is the author’s tone when he discusses the connection between scientists’ research and babies’ play?A . Convincing.B . Confused.C . Confidence.D . Cautious.四、任务型阅读（本大题共5小题，共10分）21. 阅读短文，按照题目要求用英语回答问题。

2020届山东省实验中学高三英语月考试题及答案解析第一部分阅读（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项AAre you looking for some new and exciting places to take your kids to? Try some of these places.★Visit art museums.They offer a variety of activities to excite your kids' interest. Many offer workshops for making hand-made pieces, traveling exhibits, book signings by children's favorite writer, and even musical performances and other arts.★Head to a natural history museum.This is where kids can discover the past from dinosaur(恐龙) models to rock collections and pictures of stars in the sky. Also, ask what kind of workshops and educational programs are prepared for kids and any special events that are coming up.★Go to a Youtheater.Look for one in your area offering plays for child and family visitors.Pre-show play shops are conducted by area artists and educators where kids can discover the secret about performing arts Puppet(木偶)making and stage make-up are just a couple of the special offerings you might find.★Tryhands-on science.Visit one of the many hands-on science museums aroundthe country.These science play-lands are great fun for kids and grown-ups alike. They'll keep your child mentally and physically active the whole day through while pushing buttons, experimenting, and building. When everyone is tired, enjoy a fun family science show, commonly found in these museums.1.If a child is interested in the universe, he probably will visit _____.A.a YoutheaterB.an art museumC.a hands-on science museumD.a natural history museum2.What does "hands-on science" mean in the last paragraph?A.Science games designed by kids.B.Learning science by doing things.C.A show of kids' science work.D.Reading science books.3.Where does this text probably come from?A.A museum guide.B.A tourist map.C.A science textbook.D.A news report.BIt was once a shoreline buried by enough garbage to make it invisible (看不见的), thus, given the unfortunatenickname "toilet bowl" . Now the Philippines' Manila Bay beach is totally different, compared with a few months ago. It happened so suddenly and extremely that it brought tears to the eyes of the local people.The cleanup started on 27 January, when 5, 000 volunteers descended on Manila Bay to remove over 45 tons (公吨) of garbage, marking the beginning of a nation-wide environmental campaign. But some two months before this great movement began, a quiet revolution was already underway.During the first week of December 2018, Brooklyn- based Bounties Network collectedthree tons of garbage from Manila Bay aver two days through a project that paid a small group of people, mostly fishermen, with a digital currency (数字货币) based on the Ethereum system.For the mostly non-bank -using Filipino fishermen, this was a first-ever experience with a digital currency. It's one that proves decisive in enabling poor communities around the world to take up arms in the fight against humanity's waste.There are signs that this recycling-for-digital payment industry may be just about to take off. Earlier in September 2018, Plastic Bank, a Vancouver -based company powered by IBM technology, also started a similar project. They set up a project in Naga, a town in southern Luzon, the country's largest island, building a collection point to let people exchange plastic and recyclable materials for digital payouts through a system.That both these pioneers have chosen the Philippines as their first location is not surprising considering the country's contribution to ocean waste. A Wall Street Journal study in 2015 revealed that the Philippines make the third-largest amount of plastic waste into global oceans.4. Why did people call Manila Bay beach“toilet bowl” ?A. It looked like a huge bowl.B. There were plenty of toilets.C. It was covered by rubbish.D. People loved the toilets here.5. What does the underlined phrase“descended on”in paragraph 2 mean?A. Completely depended on.B. Suddenly arrived at.C. Occasionally decreased to.D. Gradually disappeared from.6. What made poor communities willing to fight against waste?A. The benefits to their homeland.B. The desire to make a difference.C. The chance to escape ocean pollution.D. The experience with a digital currency.7. What is the best title for the text?A. Online system helps endocean pollution.B. Manila Bay beach is suddenly removed.C. Plastic Bank is powerful in recycling waste.D. Philippines make a great amount of waste.CFaming is a tradition among many in South Dakota, one that is not always easy to keep in the family. But one family has survived four generations and hopes to continue long into the future. The year was 1933 when Ed VanderWal's father first stepped onto the farm. Now 80 years later, Ed carries the passion(热情) his father gave him for farming every daywhile working the fields on the family farm in Volga.“Well, I was in the first grade when my dad moved here to this farm and I grew up on the farm. And that's what I was interested in doing more,” Ed said. But that love of working the land didn't stop with Ed. He's passed it down to his six sons. Some of them run farms of their own now, but two of them, Scott and David, still work side by side with their dad every day.Some people might worry that working sun up to sun down with family seven days a week would lead to a few family spats(争吵). But for the VanderWals, the constant time together works just fine.“When families work together on a farm, it's a challenge at times getting along. Everyone has to pull their weight and do their share. And that, of course, transfers from one generation to the next,” Scott said.And while they all get along like any family, with good days and bad, it's tradition that keeps each generation teaching the next.“But we taught them to work with animals at a young age, like most farmers do. So it's nice to be able to pass that tradition onto the next generation,” Scott said.The youngest generation of the VanderWals, Ed's three grandsons and a granddaughter, all started learning farming techniques at a young age.8. Why did Ed VanderWal devote himself to the farm?A. Because he grew up on the farm.B. Because he was affected by his father.C Because he could do nothing but work on the farm.D. Because he wanted to set a good example for his sons.9. What can we know from Paragraph 2?A. Managing a farm is a real challenge.B. Ed has divided his farms into six parts.C. Ed taught his sons how to work on farms.D. Scott and David own their own farms now.10. What can be inferred from the passage?A. The VariderWals have strict family rules.B. Ed's tradition has great effect on the local.C. Ed's grandchildren will drop out of school.D. Ed's farms have no lack of successors (继承者).11. What's the best title of the passage?A. A Faming Family.B. A Successful Farmer.C. The Agricultural 'Tradition.D. The Agricultural Generation.DFor as long as I can remember, my body and I have shared a relationship of discontent. Growing up, I was skinnier than the other kids and at five I was told I wasn't attractive and that I must put on some weight. But no matter how much I ate, I stayed thin for years until adolescence. Then I started putting on weight almost immediately. I remember feeling happy as I began to fill out. However, my joy didn't last long.I was thirteen when I was first called fat. Friends and neighbours would make jokes on my big size. As I entered my late teens, I had completely lost confidence in my body and, subsequently, in myself. Having failed to live up to conventional beauty standards, I was convinced that if I wanted to be loved, I needed to offer more, doing anything to please everyone around.I entered adulthood thinking I wasn't “enough”—an idea that was seeded not only by the fact that “skinny” is celebrated, but also by the language associated with accounts of losing weight—self­improvement, discipline—all virtues. Being fat quickly categorizes you as lazy and undisciplined. Consumed by thoughts of the way my body looked, I didn't notice the other ways my body needed attention. I failed to realize, for example, that my period was much heavier and more painful than ever before. Actually I developed a rare disease and later I had two surgeries.I was always made to feel that my weight was the root of a lot of problems in my life; I have learnt this is not true. After a lot of self­reflection and some professional help, I realized I never learnt to like myself. While two decades of self­hatred cannot be undone overnight, I have taken first steps to acceptance.I am now much lighter than before, in body and mind. There are days I find voices on social media saying I amtoo fat to be loved or to be worthy, but I am learning not to focus on that thought for long. As long as I like myself, just the way I am, opinions at the end of the day are just water off a duck's back.12. What can we learn about the author from the first two paragraphs?A. She could change her weight at will.B. She had different beauty standards from others.C. She tried to love others to build her confidence.D. She was greatly influenced by others' opinions.13. Why did the author think she wasn't “enough”?A. She was poorly disciplined.B. She failed to celebrate “skinny”．C. She was labelled as lazy for her weight.D. She put on more weight after entering adulthood.14. What caused the author to make a change?A. Her lighter body.B. A troublesome illness.C. Popular beauty standards.D. Others' critical comments.15. What is the best title for the text?A. Beauty matters.B. Opinions vary.C. Worth your weight.D. Beyond your limits.第二节（共5小题；每小题2分，满分10分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。

06不等式多选题1．【山东省菏泽一中2019 2020学年高三3月线上模拟】已知1a >，01c b <<<，下列不等式成立的是（ ） A ．b c a a > B ．c c ab b a+>+ C ．log log b c a a <D ．b cb ac a>++ 【答案】ACD【解析】对于A ：由1a >，01c b <<<，可得b c a a >，故A 正确； 对于B ：由1a >，01c b <<<，c c a bb a +-+ 可得()()()0a c b cb ca bc ba b b a b b a -+--==<++ ，c c ab b a +<+ ，故B 错误；对于C ：由1a >，01c b <<<，1log log b a a b =，1log log ca a c=，则log log 0a a c b <<，则110log log a a b c<<，可得log log b c a a <，故C 正确；对于D ：由1a >，01c b <<<，()()()()()0a b c b c bc ba cb cab ac a b a c a b a c a -+---==>++++++可得b cb ac a>++，故D 正确． 故选:ACD ．2．【山东省济南外国语2019-2020学年高三寒假综合测试三月份在线考试】下列结论正确的是（ ）A ．x R ∀∈，12x x+≥B ．若0a b <<，则3311a b ⎛⎫⎛⎫> ⎪ ⎪⎝⎭⎝⎭C ．若()20x x -<，则()2log 0,1x ∈D ．若0a >，0b >，1a b +≤，则104ab <≤ 【答案】BD【解析】对于A ：当0x <时，1x x+为负数，所以A 不正确； 对于B ：若0a b <<，则110b a<<，考虑函数3()f x x =在R 上单调递增，所以11()()f f a b >，即3311()()a b>，所以B 正确； 对于C ：若()20x x -<，则02x <<，2log (,1)x ∈-∞，所以C 不正确；对于D ：若0a >，0b >，1a b +≤21,0()224a b a b ab ++≤<≤=所以D 正确. 故选：BD ．3．【百师联盟2019-2020学年高三上学期期中联考】下列命题中不正确．．．的是（ ） A ．设m 为直线，,αβ为平面，且m α⊥；则“//m β”是“αβ⊥”的充要条件 B ．设随机变量1)0(N ζ，，若()3P p ζ≥=，则()1302P p ζ-<<=- C ．若不等式922x m x+≥+(0x >)恒成立，则m 的取值范围是(,2)-∞ D ．已知直线2ax by +=经过点(1)3，，则28a b +的取值范围是[4)+∞， 【答案】AC【解析】A 选项，如图所示：αβ⊥，m α⊥，m β⊂，不一定//m β，因此不是充要条件，故A 错误.B 选项，对称轴为0x =，由对称性可知：121(30)22p P p ζ--<<==-.故B 正确. C 选项，由996x x x x+≥=，可得622m ≥+，所以m 的范围为(]2-∞，，故C 不正确. 选项D ，由直线2ax by +=经过点(1,3)，可得32a b +=，则328228224a b a b a b ++≥==，当且仅当31a b ==等号成立， 所以取值范围是[4,)+∞， 故D 正确． 故选：AC4．【江苏省海安高级中学2019-2020学年高三上学期12月月考】下列结论正确的是（ ）A ．若22a b >，则11a b< B ．若0x >，则44x x+≥ C ．若0a b >>，则lg lg a b > D ．若0ab >，1a b +=，则114a b+≥ 【答案】BCD【解析】对于A ，若22a b >，则a b >，当2a =，1b =-时，11a b<不成立，故A 错；对于B ，由0x >，则44x x +≥=，当且仅当2x =取等号，故B 正确； 对于C ，由lg y x =为单调递增函数，由0a b >>，则lg lg a b >，故C 正确；对于D ，由0ab >，1a b +=，则()111124b a a b a b a b ⎛⎫++=+++≥+= ⎪⎝⎭，当且仅当12a b ==时取等号，故D 正确； 故选：BCD5．【江苏省徐州市2019-2020学年高三上学期期中】给出下面四个推断，其中正确的为（ ）.A ．若,(0,)a b ∈+∞，则2b aa b+；B ．若,(0,)x y ∈+∞则lg lg 2lg lg x y x +⋅C ．若a ∈R ，0a ≠，则44a a+； D ．若,x y ∈R ，0xy <，则2x yy x+≤-. 【答案】AD【解析】对于选项A ，因为,(0,)a b ∈+∞，则22b a b aa b a b+⨯=，当且仅当b a a b =，即a b =时取等号，即选项A 正确；对于选项B ，当,(0,1)x y ∈时，lg ,lg (,0)x y ∈-∞，lg lg 2lg lg x y x +⋅B 错误；对于选项C ，当0a <时，44a a+显然不成立，即选项C 错误；对于选项D ，0xy <，则0,0y x x y ->->，则[()()]2x y x y y x y x +=--+-≤-=-，当且仅当()()xy y x-=-，即x y =-时取等号，即选项D 正确， 即四个推段中正确的为AD ， 故选：AD.6．【山东省滨州市三校联考2019-2020学年高三上学期期中】设11a b >>>-，0b ≠，则下列不等式中恒成立的是（ ） A ．11a b< B ．11a b> C ．2a b > D ．22a b >【答案】CD【解析】当12,2a b ==-，满足条件．但11a b <不成立，故A 错误，当0a b >>时，11a b <，故B错误，11,0b b >>-≠，201b ∴<<，则2a b >，故C 正确，11,0,0a b a b a b >>>-∴+>->，22()()0a b a b a b ∴-=+->，故D 正确.故选：CD ．7．【山东省德州市2019-2020学年高三上学期期中】对于实数a 、b 、c ，下列命题中正确的是（ ）A ．若a b >，则ac bc <；B ．若0a b <<，则22a ab b >>C ．若0c a b >>>，则a b c a c b>-- D ．若a b >，11a b >，则0a >，0b <【答案】BCD【解析】若0c >，则由a b >得ac bc >，A 错；若0a b <<，则2a ab >，2ab b > 22a ab b >>，B 正确；若0c a b >>>，则0c b c a ->->，∴110c a c b>>--，∴a b c a c b >--，C 正确； 若a b >，且,a b 同号时，则有11a b <，因此由11,a b a b>>得0,0a b ><，D 正确．故选：BCD ．8．【山东省烟台市2019-2020学年高三上学期期中】下列结论正确的是( )A ．若0,0a b c d >><<，则一定有b ac d> B ．若0x y >>，且1xy=，则()21log 2xyx x y y +>>+C ．设{}n a 是等差数列，若210a a >>，则2a >D ．若[)0,x ∈+∞，则()21ln 18x x x +≥- 【答案】AC【解析】选项A ，由0c d <<，可得0c d ->->，则110d c->->，又0a b >>，所以a b d c ->-，则b ac d>，故A 正确. 选项B ，取12,2x y ==，则221154,,log ()log 1282x y x x y y +==+=>，不等式不成立，故B 不正确.选项C ，由题意得1322a a a +=且13a a ≠，所以21311=()22a a a +>⨯=C 正确. 选项D ，设21()ln(1)8h x x x x =+-+，则1(3)()1144(1)x x x h x x x -'=-+=++，当03x <<时，()0h x '<，则()h x 单调递减，()(0)0h x h <=，故D 不正确. 故选：AC.9．【山东省枣庄市第三中学2010-2020学年高三上学期10月学情调查】如下的四个命题中真命题的标号为（ ）A ．已知实数a ，b ，c 满足2743b c a a +=-+，254c b a a -=-+，则c b a >>B ．若22ππαβ-<<<，则αβ-的取值范围是(),ππ-C ．如果ln 33a =，ln 44b =，ln 55c =，那么c b a << D ．若0a b <<，则不等式11b b a a +<+一定成立 【答案】ABCD【解析】对A ，由2245(2)10c b a a a -=-++=->，c b ∴>．再由2347b c a a +=-+①，245c b a a -=-+②，-①②得：2222b a =+，即21b a =+．22131()24a a a +-=-+，21b a a ∴=+>，c b a ∴>>，故A 正确；对B ，22ππβ-<<，22ππβ∴-<-<，παβπ∴-<-<，故B 正确；对C ，由ln x y x =，则'21ln x y x-=，当x e >时，1ln 0x -<，∴ln x y x =在(,)e +∞上单调递减，345e <<<，ln 3ln 4ln 5345∴>>，c b a ∴<<，故C 正确； 对D ，要证不等式11b b a a +<+成立，等价于证明(1)(1)a b a b +⋅<⋅+b a ⇔<，0a b <<，||||b a ∴<显然成立，故D 正确.故选ABCD .10．【2019年山东省济南市外国语学校高三9月阶段测试】已知a ，b 为正实数，则下列命题正确的是（）A ．若221a b -=，则1a b -<B ．若111b a-=，则1a b -<C ．若1a b e e -=，则1a b -<D ．若ln ln 1a b -=，则1a b -<【答案】AC 【解析】对于A ：221a b -=时，()()1a b a b -+=⋅．0,0a b >>，0a b a b ∴<-<+，11a b a b∴-=<+，故A 正确； 对于B ：111b a-=时，不妨取33,4a b ==满足条件，则914a b -=>，所以B 错误.对于C ：由1a b e e -=，可得(1)1a b bb b a b e e e e -+--=-=．0b >，1b e ∴>，11a b e -∴-<，即2a b e -<，ln 2ln 1a b e ∴-<<=，故C 正确．对于D ：不妨取2,a e b e ==满足条件，则21a b e e -=->，所以D 错误． 故选：AC ．11．【山东省青岛市2020届高三第三次模拟】已知曲线()32213f x x x ax =-+-上存在两条斜率为3的不同切线，且切点的横坐标都大于零，则实数a 可能的取值（ ） A ．196B ．3C ．103D ．92【答案】AC 【解析】由题可知，322()13f x x x ax =-+-，则2()22f x x x a '=-+，可令切点的横坐标为m ，且0m >，可得切线斜率2223k m m a =-+=，由题意，可得关于m 的方程22230m m a -+-=有两个不等的正根，且可知1210m m +=>，则1200m m ∆>⎧⎨>⎩，即48(3)0302a a -->⎧⎪⎨->⎪⎩，解得：732a <<，a ∴的取值可能为196，103.故选：AC. 12．【山东省2020届普通高等学校招生全国统一考试数学试题模拟卷（二)】已知函数()e 2xf x x =+-的零点为a ，函数()ln 2g x x x =+-的零点为b ，则下列不等式中成立的是（ ） A ．e ln 2a b +> B ．e ln 2a b +< C ．223a b +<D ．1ab <【答案】CD【解析】由()0f x =，()0g x =得e 2x x =-，ln 2x x =-，函数e x y =与ln y x =互为反函数，在同一坐标系中分别作出函数e x y =，ln y x =，2y x =-的图象，如图所示，则(),eaA a ，(,ln )B b b ．由反函数性质知,A B 关于(1，1)对称，则2a b +=，e ln 2ab +=，2()14a b ab +<=，∴A ､B 错误，D 正确．()e 10xf x '=+>，()f x ∴在R 上单调递增，且(0)10f =-<，13e 022f ⎛⎫=-> ⎪⎝⎭，102a ∴<<．又∵点(e ),aA a 在直线2y x =-上，即e 2a a b =-=，22221e e 34a a b a ∴+=+<+<，故C 正确.故选：CD13．【山东省2020届普通高等学校招生全国统一考试数学试题模拟卷（一)】对于实数a ，b ，m ，下列说法正确的是（ ） A ．若22am bm >，则a b > B ．若a b >，则a ab bC ．若0b a >>，0m >，则a m ab m b+>+ D ．若0a b >>且ln ln a b =，则()23,a b +∈+∞ 【答案】ABCD【解析】对实数a ，b ，m ．2220am bm m ∴>>，a b ∴>，A 正确；a b >，分三种情况，当0a b >>时，0a ab b ；当0a b >>时，22a a ab b b ；当0a b >>时，22a aa b b b ，a a b b ∴>成立，B 正确；0b a >>，0m >，()()()()()0()a m b a b m b a m a m a ab bm ab am b m b b b m b b m b b m +-+-++---===+++∴>+，C 正确； 若0a b >>，且ln ln a b =，1a b ∴=，且1a >．122a b a a∴+=+， 设()()121f a a a a=+>，根据双勾函数的单调性知，()f a 在区间()1,+∞上单调递增， ()(1)3f a f ∴>=，即()23,a b +∈+∞，D 正确．故选：ABCD ．14．【山东省2020届普通高等学校招生全国统一考试数学试题模拟卷（一)】已知函数()ln f x x =，若()f x 在1x x =和()212x x x x =≠处切线平行，则（ ）A12= B ．12128x x <C ．1232x x +<D ．2212512x x +>【答案】AD【解析】由题意知()()10f x x x'=>，因为()f x 在1x x =和()212x x x x =≠处切线平行，所以()()12f x f x ''=1211x x =-12=，A 正确； 由基本不等式及12x x ≠，可得12=>12256x x >，B错误；1232x x +>>，C 错误；2212122512x x x x +>>，D 正确． 故选：AD15．【山东省泰安市2020届高三第五次模拟】已知向量()()()2,1,1,1,2,,a b c m n ==-=--其中,m n 均为正数，且()//a b c -，下列说法正确的是（ ） A ． a 与b 的夹角为钝角 B ．向量a 在bC ．24m n +=D ．mn 的最大值为2【答案】CD【解析】由题意知，10a b ⋅=>，所以a 与b 的夹角为锐角，故选项A 错误；向量a 在b 方向上的投影为12a b b⋅==，故选项B 错误； ()1,2a b -=，因为()//a b c -，,m n 均为正数，所以c 为非零向量，且24,24n m m n -=-+=，故选项C 正确；由基本不等式知，42m n =+≥，2mn ≤，当且仅当22m n ==时取等号， 故mn 的最大值为2，故选项D 正确. 故选：CD16．【山东省潍坊市2020届高三模拟(二模)】若1a b <<-，0c >则下列不等式中一定成立的是（ ）A ．11a b a b->- B ．11b a a b -<- C ．ln()0b a -> D ．()()c ca b b a>【答案】BD【解析】由函数1y x x=-在(,1)-∞-上为增函数可知，当1a b <<-时，11a b a b -<-，故选项A 错误； 由函数1y x x =+在(,1)-∞-上为增函数可知，当1a b <<-时，11a b a b +<+，即11b aa b -<-，故选项B 正确；由于a b <，则0b a ->，但不确定b a -与1的大小关系，故ln()b a -与0的大小关系不确定，故选项C 错误；由1a b <<-可知，1a b >，01b a <<，而0c >，则10c ca b b a ⎛⎫⎛⎫>>> ⎪ ⎪⎝⎭⎝⎭，故选项D 正确．故选：BD17．【山东省济宁市2020届高三6月高考模拟考试（三模)】已知直线2y x =-+分别与函数xy e =和ln y x =的图象交于点()()1122,,,A x y B x y ，则下列结论正确的是( )A ．122x x +=B ．122x x e e e +>C ．1221ln ln 0x x x x +<D ．122x x >【答案】ABC【解析】函数xy e =与ln y x =互为反函数，则xy e =与ln y x =的图象关于y x =对称，将2y x =-+与y x =联立，则1,1x y ==，由直线2y x =-+分别与函数x y e =和ln y x =的图象交于点()()1122,,,A x y B x y ，作出函数图像：则()()1122,,,A x y B x y 的中点坐标为()1,1， 对于A ，由1212x x +=，解得122x x +=，故A 正确； 对于B ，12121222222x x x x x x e e e e e e e +≥=+⋅==， 因为12x x ≠，即等号不成立，所以122x x e e e +>，故B 正确；对于C ，将2y x =-+与xy e =联立可得2x x e -+=，即20x e x +-=，设()2xf x e x =+-，且函数为单调递增函数，()010210f =+-=-<，112211320222f e e ⎛⎫=+-=-> ⎪⎝⎭，故函数的零点在10,2⎛⎫ ⎪⎝⎭上，即1102x <<，由122x x +=，则212x <<，122112211ln ln ln ln x x x x x x x x +=-＜()1222122ln ln ln 0x x x x x x x <-=-<，故C 正确；对于D ，由12122x x x x +≥，解得121x x ≤，由于12x x ≠，则121x x <，故D 错误； 故选：ABC18．【山东省淄博市部分学校2020届高三6月阶段性诊断考试（二模)】设[]x 表示不小于实数x 的最小整数，则满足关于x 的不等式[][]2120x x +-≤的解可以为（ ） A 10 B ．3 C ．-4.5 D ．-5【答案】BC【解析】因为不等式[][]2120x x +-≤，所以[]()[]()340x x -+≤，所以[]43x -≤≤，又因为[]x表示不小于实数x 的最小整数，所以不等式[][]2120x x +-≤的解可以为3，-4.5.故选：BC 19．【山东省德州市2020届高三第二次(6月)模拟】若正实数a ，b 满足1a b +=则下列说法正确的是（ ）A ．ab 有最大值14B C ．11a b+有最小值2 D ．22a b +有最大值12【答案】AB【解析】对于A ：2211224a b ab +⎛⎫⎛⎫≤== ⎪ ⎪⎝⎭⎝⎭,当且仅当12a b ==时取等号.故A 正确；对于B ：22a b a b a b =++≤+++=,≤,当且仅当12a b ==时取等号.故B 正确；对于C ：()1111224b a a b a b a b a b ⎛⎫+=++=++≥+⎝= ⎪⎭.当且仅当12a b ==时取等号.所以11a b+有最小值4.故C 错误； 对于D ：()()2222222121a b a ab b a a bb +=⇒++=≤+++,即2212a b +≥,故22a b +有最小值12.故D 错误； 故选：AB ．20．【山东省、海南省新高考2019-2020学年高三4月份】对于实数a ，b ，c ，下列命题是真命题的为（ ）A ．若a ＞b ，则11a b＜ B ．若a ＞b ，则ac 2≥bc 2 C ．若a ＞0＞b ，则a 2＜﹣ab D ．若c ＞a ＞b ＞0，则a b c a c b--＞ 【答案】BD【解析】A ．根据a ＞b ，取a ＝1，b ＝﹣1，则11ab＜不成立，故A 错误； B ．∵a ＞b ，∴由不等式的基本性质知ac 2≥bc 2成立，故B 正确； C ．由a ＞0＞b ，取a ＝1，b ＝﹣1，则a 2＜﹣ab 不成立，故C 错误；D ．∵c ＞a ＞b ＞0，∴（a ﹣b ）c ＞0，∴ac ﹣ab ＞bc ﹣ab ，即a （c ﹣b ）＞b （c ﹣a ），∵c ﹣a ＞0，c ﹣b ＞0，∴a b c a c b--＞，故D 正确． 故选：BD ．21．【2020届山东省临沂市蒙阴县实验中学高三上学期期末】下列判断正确的是（ ）A ．若随机变量ξ服从正态分布()21,N σ，()40.79P ξ≤=，则()20.21P ξ≤-=；B ．已知直线l ⊥平面α，直线//m 平面β，则“//αβ”是“l m ⊥”的必要不充分条件；C ．若随机变量ξ服从二项分布：14,4B ξ⎛⎫⎪⎝⎭，则()1E ξ=； D ．已知直线2ax by +=经过点()1,3，则28a b +的取值范围是[)4,+∞ 【答案】ACD【解析】A 选项，若随机变量ξ服从正态分布()21,N σ，()40.79P ξ≤=，根据正态分布曲线的对称性有()()240.79P P ξξ≥-=≤=，所以()()21210.790.21P P ξξ≤-=-≥-=-=，A 选项正确；B 选项，因为//αβ，直线l ⊥平面α，所以直线l ⊥平面β，又直线//m 平面β，所以l m ⊥，充分性成立；设n αβ=，在α内取平行于n 的直线m n ≠，则l m ⊥且βn//，但是α与β相交，必要性不成立，B 不正确； C 选项，因为14,4B ξ⎛⎫⎪⎝⎭，所以1414E np ξ==⨯=，C 正确；D 选项，由题意知32a b +=，因为20a >，3820b b =>，所以2824a b +≥=，当且仅当11,3a b ==时取等号，故D 正确. 故选：ACD22．【2020届山东省聊城市高三高考模拟（一)】若实数2a ≥，则下列不等式中一定成立的是（ ）A ．21(1)(2)a a a a +++>+B ．1log (1)log (2)a a a a ++>+C ．1log (1)a a a a ++< D ．12log (2)1a a a a +++<+ 【答案】ABD 【解析】令()ln x f x x =，则()21ln x f x x -'=0<在()3,x ∈+∞上恒成立，所以函数()ln xf x x=在(),x e ∈+∞上单调递减，对于选项A ：因为2a ≥，所以21(1)(2)a a a a +++>+()()()()2ln 11ln 2a a a a ⇔++>++， 即原不等式等价于()()ln 1ln 212a a a a ++>++，因为12a a +<+，所以()()ln 1ln 212a a a a ++>++，从而可得21(1)(2)a a a a +++>+，故选项A 正确；对于选项C ：1log (1)a a a a ++<()ln 11ln a a a a ++⇔<()ln 1ln 1a a a a+⇔<+， 由于函数()ln x f x x =在(),e +∞上单调递减，所以()()43f f <，即ln 4ln 343<，因为ln 42ln 2ln 2442==，所以ln 2ln 323<，取2a =，则()ln 1ln 1a a a a+>+，故选项C 错误； 对于选项D ：12log (2)1a a a a +++<+()()ln 22ln 11a a a a ++⇔<++()()ln 2ln 121a a a a ++⇔<++，与选项A 相同，故选项D 正确.对于选项B ：1log (1)log (2)a a a a ++>+()()()ln 1ln 2ln ln 1a a a a ++⇔>+，因为2a ≥，所以等价于()()2ln 1ln ln 2a a a +>⋅+，因为()()2ln ln 2ln ln 22a a a a ++⎡⎤⋅+<⎢⎥⎣⎦．因为()()()()222222ln 2ln 21ln ln 2ln 1222a a a a a a a ⎡⎤⎡⎤+++++⎡⎤⎢⎥⎢⎥=<=+⎢⎥⎢⎥⎢⎥⎣⎦⎣⎦⎣⎦，所以不等式1log (1)log (2)a a a a ++>+成立，故选项B 正确；故选：ABD23．【2020届天一大联考海南省高三年级第三次模拟】设a ，b ，c 为实数且a b >，则下列不等式一定成立的是（ ） A ．11a b> B ．20201a b -> C ．ln ln a b > D ．()()2211a c b c +>+【答案】BD【解析】对于A ，若0a b >>，则11a b<，所以A 错误； 对于B ，因为0a b ->，所以20201a b ->，故B 正确；对于C ，函数ln y x =的定义域为0,，而a ，b 不一定是正数，所以C 错误；对于D ，因为210c +>，所以()()2211a c b c +>+，所以D 正确.故选：BD24．【山东省泰安市2019-2020学年高三上学期期末】已知a b c d ,,,均为实数，则下列命题正确的是（ ）A ．若,a b c d >>，则ac bd >B ．若0,0ab bc ad >->，则0c da b-> C ．若,,a b c d >>则a d b c ->- D ．若,0,a b c d >>>则a b d c> 【答案】BC【解析】若0a b >>，0c d >>，则ac bd <，故A 错； 若0ab >，0bc ad ->，则0bc adab ->，化简得0c d a b->，故B 对； 若c d >，则d c ->-，又a b >，则a d b c ->-，故C 对； 若1a =-，2b =-，2c =，1d =，则1a d =-，1b c =-，1a bd c==-，故D 错； 故选：BC ．25．【2020届山东省潍坊市临朐县高三综合模拟考试数学试题(一)】实数x ，y 满足2220x y x ++=，则下列关于1yx -的判断正确的是（ ）A ．1yx -B ．1yx -的最小值为C ．1y x -的最大值为3D ．1y x -的最小值为3- 【答案】CD【解析】由题意可得方程2220x y x ++=为圆心是(1,0)C -，半径为1的圆，由1yx -为圆上的点与定点(1,0)P 的斜率的值．设过(1,0)P 点的直线为(1)y k x =+，即0kx y k -+=，圆心到到直线的距离d r =1=，整理可得231k =解得3k =±，所以[]133y x ∈--，即1y x -的最3-．故选CD .26．【山东省日照市五莲县第一中学2019-2020学年高三3月过程检测】已知2a b >，则（ ）A ．23b b a <-B ．3322a b a b ab +>+C ．ab a b >+D ．12112ab a b+>+ 【答案】BC【解析】2a b >，对于A ：A 错误，比如3a =，2b =，43>不成立； 对于B ：()3322222()()()()0a b a b aba ab b a b a b a b +-+=---=-+>成立；对于C ：由1(1)(1)(1)1011b ab a b a b b b a b a b b ⎡⎤⎛⎫⎛⎫--=--=--=--+> ⎪ ⎪⎢⎥--⎝⎭⎝⎭⎣⎦，故C 成立， 对于D ：1211(2)(2)022a b ab a b ab--+--=，故D 不成立， 故选:BC ．27．【山东省日照市五莲县第一中学2019-2020学年高三3月过程检测】数学中的数形结合，也可以组成世间万物的绚丽画面.一些优美的曲线是数学形象美、对称美、和谐美的结合产物，曲线()32222:16C x y x y +=恰好是四叶玫瑰线.给出下列结论正确的是（ ）A ．曲线C 经过5个整点（即横、纵坐标均为整数的点）B ．曲线C 上任意一点到坐标原点O 的距离都不超过2 C ．曲线C 围成区域的面积大于4πD ．方程()3222216(0)x y x y xy +=>表示的曲线C 在第一象限和第三象限【答案】BD【解析】把2x =，2y =代入曲线C ，可知等号两边成立，所以曲线C 在第一象限过点(2,2)， 由曲线的对称性可知，该点的位置是图中的点M ，对于A 选项，只需要考虑曲线在第一象限内经过的整点即可，把(1,1)，(1,2)和(2,1)代入曲线C 的方程验证可知，等号不成立，所以曲线C 在第一象限内不经过任何整点．再结合曲线的对称性可知，曲线C 只经过整点(0,0)，即A 错误；对于B 选项，因为222(0,0)x yxy x y +>>，所以222x y xy +，所以()()()22232222222161644x y xy x y x y ++=⨯=+，所以224x y +，即B 正确；对于C 选项，以O 为圆点，2为半径的圆O 的面积为4π，显然曲线C 围成的区域的面积小于圆O 的面积，即C 错误；对于D 选项，因为0xy >，所以x 与y 同号，仅限与第一和三象限，即D 正确. 故选:BD .28．【2020届山东省潍坊市奎文区第一中学高三下学期3月月考】设正实数a ，b 满足1a b +=，则（ ）A ．11a b+有最小值4 B 12C 有最大值1D ．22a b +有最小值12【答案】AD【解析】对于A ：正实数a ，b 满足1a b +=，即有a b +≥104ab <≤，即有1114a b ab +=≥，即有a b =时，11a b+取得最小值4，无最大值，故A 正确；对B ：由102<≤有最大值12，故B 错误；对于C ==≤=a b =，故C 错误；对于D ：由222a b ab +≥可得2222()()1a b a b +≥+=，则2212a b +≥，当12a b ==时，22a b +取得最小值12，故D 正确． 故选：AD ．29．【2020届山东省枣庄、滕州市高三上学期期末】如图所示，一座小岛距离海岸线上最近的P 点的距离是2km ，从P 点沿海岸正东12km 处有一个城镇.假设一个人驾驶的小船的平均速度为3/km h ，步行的速度为5/km h ，时间t （单位：h ）表示他从小岛到城镇的时间，x （单位：km ）表示此人将船停在海岸处距P 点的距离.设24,u x x =++24v x x =+-，则（ ）A ．函数()v f u =为减函数B ．15432t u v --=C ．当 1.5x =时，此人从小岛到城镇花费的时间最少D ．当4x =时，此人从小岛到城镇花费的时间不超过3h 【答案】AC 【解析】A.∵24,u x x +24v x x =+24,22u v u vx x +-+==， 由题意4uv =，4v u=在(0,)+∞上是减函数，A 正确． B.24125x x t +-=126510u v u v+-=+-，整理得15436t u v =++，B 错误； C.由A 、B 得161615363644t u u u u=++≥⋅=，16u u =即4u =时取等号，244x x +=，解得31.52x ==，C 正确； D.4x =时，2585t =+，25710521500441305t ---=-==>，3t >，D 错． 故选：AC.30．【山东省潍坊市2019-2020学年高三上学期期中】若x y ≥，则下列不等式中正确的是（ ）A ．22x y ≥B ．2x yxy +≥C ．22x y ≥ D ．222x y xy +≥【答案】AD【解析】对A ，由指数函数的单调性可知，当x y ≥，有22x y ≥，故A 正确； 对B ，当0,0,x y x y <<>时，2x yxy +≥不成立，故B 错误；对C ，当0x y ≥≥时，22x y ≥不成立，故C 错误； 对D ，2222()0x y xy x y +-=-≥成立，从而有222x y xy +≥成立，故D 正确；故选：AD.。

上海市闵行区六校联考2024-2025学年高一上学期10月期中英语试题一、听力选择题1．A．$30.B．$27.C．$20.D．$10.2．A．He may feel better soon.B．He doesn’t like to take pills.C．He may not be able to wake up on time.D．He may want to take the pills without food. 3．A．Post her the paper after the deadline.B．Hand in a handwritten draft of the paper.C．Attend a conference with her two weeks later.D．Complete the course without handing in the paper.4．A．Lose some weight.B．Shop for new clothes.C．Have his jeans altered.D．Wear clothes that fit better.5．A．Sharpen the man’s pencil.B．Ask the model to move his arm.C．Give the man a new sheet of paper.D．Show the man a drawing technique.6．A．Disappointed.B．Curious.C．Satisfied.D．Casual.7．A．He’d like some help at the baggage counter.B．He doesn’t know the woman ahead of him.C．He was permitted to carry one extra bag.D．He is carrying someone else’s suitcase.8．A．Some of her colleagues may not take part in the program.B．A few of them are allowed to participate in the training.C．All her colleagues have agreed to go for the program.D．Employees are all required to receive the training.9．A．She would rather take a direct train.B．It doesn’t take long to get to Chongqing.C．She doesn’t care how long the trip takes.D．Taking an airplane might be more practical.10．A．If he has more than a dollar.B．If he makes a phone call first.C．If he finds the change machine.D．If he buys something from her.听下面一段独白，回答以下小题。

2020届济南市泉城中学高三英语月考试题及答案第一部分阅读（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项AWe are proud to present a showcase for kid inventions from children chosen from the Kid's Forum at Blue Print Earth. We hope you enjoy the ideas expressed here and join us in supporting the next generation.Eater of Natural DisastersMy invention cansave your home by sucking up all-natural disasters. The government will not own this machine, but by you so there will be no taxes on it. Order Now! The Eater of Natural Disasters will run on renewable batteries. It will cost 50 dollars to make and I will sell it for just $ 75.Created by Matthew Szekeresh —Mt.WashingtonElementary, 5th Grade.Pick-up-Pollution BombMy invention is called the Pick-up-Pollution Bomb. It will just pick up pollution and it won't hurt anything else like people, animals, property, playgrounds, and parks. The reason why I made it is that I think there is too much pollution on the Earth. It sells for $100 apiece, and if you buy this now, I will send you another one for free.Created gratefully by Lauren Newberry — Mt. Washington Elementary, 5th GradeFlying HouseMy invention is a home that will blast off in space. For example, if there were an earthquake people would immediately blast off, or if there were a flood it would take off. Only for $ 400.99.Created by David Turner —Mt.WashingtonElementary, 5th GradeBug RobotMy invention is a robot that catches little bugs, eats little bugs, sucks up pollution, sucks up natural disasters, and turns them into food solving the problems of too many little bugs, natural disasters, pollution and starvation. My product is worth $500. My invention works on 2 triple — A batteries. And if you order one today I'll throw in 4 rechargeable triple-A batteries.Created by Cassie Courtey —Mt.WashingtonElementary, 5th Grade1. Why is the Flying House created?A. To explore the space.B. To clean the air.C. To prepare people for earthquakes.D. To help people escape from natural disasters.2. Which invention can turn pollution into food?A. The Bug Robot.B. The Pick-up-Pollution Bomb.C. The Flying House.D. The Eater of Natural Disasters.3. What can we infer about the four inventions?A. They are very easy to build.B. They are ideas from kids in the same school.C. They are expensive but of practical use.D. They are being used by people.BA new study finds almost one third of the world’s population is overweight. Since 1980, obesity rates(肥胖率)in children and adults have doubled in 73 countries, making people more worried. And rates are increasing in many other countries. Obesity is increasing faster in children than adults in many nations, including Algeria, Turkey and Jordan, the report said. But the world's weight problem is growing in both rich and poor countries alike. Researchers say an increasing number of people are dying of related health problems in what they called a "disturbing global public health problem."Researchers studied health information from 1980 through 2015. They examined obesity rates, average weight gain in 195 countries. They found that obesity rates are three times greater among youth and young adults in countries like China, Brazil and India. Almost 108 million children and more than 600 million adults were found to be overweight. Egypt had the highest number of overweight adults in 2015. Vietnam had the least. In the same year, the United States had the highest number of overweight children, and Bangladesh had the least.Yet hunger remains a problem in many areas. The United Nations said that almost 800 million people, including 300 million children, go to bed hungry each night. Experts said poor diets and lack of physical activity are mainly to blame for the rising numbers of overweight people.Growing populations have led to rising obesity rates in poor countries. Often, poor people will eat processed(加工的) foods instead of choosing a diet rich in vegetables.The London-based Overseas Development Institute studied the price of food in five countries: Britain, Brazil, China, Mexico and South Korea. It found that the cost of processed foods like ice creamand hamburgers has fallen since 1990. But the cost of fresh fruits and vegetables has gone up.4. What do we know about obesity in the world?A. It is worryingB. It is given no attentionC. It has been successfully solvedD. It is more serious among old people5. Which country has the most overweight children in 2015?A. AmericaB. VietnamC. EgyptD. Bangladesh6. What is one of the reasons why people get overweight?A. HungerB. Poor dietC. Diets with vegetablesD. Eating too much fruit7. Which ofthe following can be the best title for the text?A. It’s Important to Have a Balanced DietB. How Can We Lose Weight and Keep Fit?C. Is It Necessary for Us to Eat Fresh Vegetables?D. Nearly One Third of People in the World Are Overweight.CThe AI research arm of Alibaba created a machine learning model that received a higher score on the Stanford Question Answering Dataset than humans. The database consists of more than 100,000 questions to test reading comprehension.In early January this year the Alibaba AI software machine scored 82.44 on the test while humans scored 82.304. Besides, computers and AI have already defeated humans, for example in games such as chess. However, it seemed that language skills were superior in humans as machines find languages hard to master.A large number of call center employees, often in developing countries, may be out of work soon if the AI robots are cheaper and as effective as human labor. Soon when you phone a company for information the conversation will go like this: “ We are sorry but all our robots are busy right now. We value your call. Please stay on the line until a robot is free to serve you. There are just 12 callers ahead of you.” A robot will serve you some popular tunes while you wait.Si Luo, who is a chief scientist of natural language processing at Alibaba’s AI research group noted that questions such as “What causes rain?” can now be answered with a high degree of accuracy by robots. Si Luo said, “ We believe the foundational technology can be gradually applied to a lot of applications such as customer service, museum tutorials, and online responses to inquiries from patients, freeing human efforts in a new way.”Si Luo’s team is working closely with Ali Xiaomi, a mobile customer service chatbot. Ali Xiaomi can be customized to be used on Alibaba’s platforms such as Taobao and Tmall. The new AI robots could answerconsumers’ questions as they did the Stanford questions. The robots would look for the answers from prepared information. However, there are limits to what the system will be able to do. If questions do not have clear-cut answers, or the questions asked are too unclear or ungrammatical, the robot may not be able to deal with them.8. What can we learn about the Alibaba AI software machine?A. It has been tested in some areas.B. It has become popular since January.C. It has offered a special learning style.D. It has made people interested in reading.9. What does the example in paragraph 3 show about the AI robots?A. They should have better language skills.B. They may replace humans in some fields.C. They need to be customized to serve customers.D. They will be widely used in developing countries.10. How does Si Luo feel about the foundational technology?A. Doubtful.B. Worried.C. Curious.D. Confident.11. What can we infer from the lastparagraph about Ali Xiaomi?A. It needs to improve in some ways.B. It is connected with another system.C. It is a platform to show good service.D. It can answer any questions accordingly.DMany of us in China enjoy adding chilies (辣椒) toour food, but did you know that this spicy vegetable could also be dangerous? A 34-year-oldUSman recently ended up in hospital after eating a Carolina Reaper—the spiciest chili in the world. After taking just a single bite of one, the man suffered from serious headaches in the following few days, reported BBC News.In fact, reports of stomachache and headache caused by eating spicy food are not something unusual. But if chilies are harmful, why is it that human beings are the only animals to eat this vegetable? According to the website Huanqiu, about 600 million Chinese people—almost half of the national population—are chili eaters. So what makes people love chilies so much? The human body reacts to the burning feeling that comes from eating chilies by releasing natural chemicals that “produce a sense of happiness” , noted BBC News.And the benefits go even further than just personal enjoyment. A survey conducted by the Chinese Academy of Medical Sciences found that the death rate of those who eat spicy food once or twice a week is 10 percent lower than those who eat it less than once a week. The number decreased to 14 percent for those who eat spicy food six to seven times a week. And another study done by theUniversityofVermontcame to a similar conclusion.“The data encourages people to eat more spicy food to improve health and reduce death risk at an early age,” Liu Qi, a nutritionist at the Harvard TH Chan School of Public Health, told BBC News.Chilies have anti-cancer quality and the ability to increase our metabolism (新陈代谢). So, don't worry if you love spicy food. It seems that chilies are actually good for us—except for the Carolina Reaper, perhaps.12. The example of a 34-year-old American is mentioned in Paragraph 1 to prove ________.A. chiliescan be beneficialB. chilies are popular inAmericaC. chilies can be dangerousD. serious headaches can be dangerous13. Eating chilies gives people a sense of happiness by_______.A. decreasing death rateB. releasing natural chemicalsC. curing serious headachesD. providing enough nutrition14. Which of the following statement is TRUE?A. Human are the only animals to eat chilies.B. Stomachache and headaches caused by chilies is something unusual.C. The more chilies you eat, the healthier you are.D. Chilies have anti-cancer quality but it can't increase our metabolism.15. The writer wrote the passage to ________.A. warn people of the dangers of chiliesB. ask people to eat Carolina ReaperC. encourage people to eat more chiliesD. tell people the benefits of chilies第二节（共5小题；每小题2分，满分10分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。

浙江省2020届高三2月新高考研究卷英语卷（1）英语试题（含答案解析）高考真题高考模拟高中联考期中试卷期末考试月考试卷学业水平同步练习浙江省2020届高三2月新高考研究卷英语卷（1）英语试题（含答案解析）1 The other day I was shopping at a local store and came upon a lady from India squatting (蹲下)on the floor looking for a certain product on the bottom shelf. She sprang up when she saw me as if to get out of my way. Apologetically she explained that she was a cashier at a nearby store and was on her lunch break, trying to get a few needed items before her time was up.I r eassured her, “I am in no hurry. Go ahead and do what you need to do.” While she searched for a particular brand, she said that sometimes customers were rude to her at the store and she really appreciated my kindness. I told her that I had noticed cashiers being treated rudely by some people.I also explained to her that I was a retired nurse and understood some of what she was saying first hand. Sometimes patients, families, or doctors could be very rude or mean. But I tried to understand why they were feeling that way and let it go. “The world would be a better place if we all acted kindly toward each other. Those who are rude may have bad karma coming after them eventually.” I added.She nodded and was surprised, “So you know about karma?” My reply was simple. “A little bit. Karma is the same thing as doing something bad and it comes back to bite you on the butt.” She paused, looked puzzled, then broke out in a big smile and covered her mouth with her hand, laughing as she walked away.It felt so good that in a brief exchange I showed her there were kind people in the world, which might have helped her regain her faith in humanity.1.How did the lady react when she saw the author in the store?A. She apologized for her rude manners.B. She invited her to have lunch together.C. She stood up trying to make way for her.D. She kept searching for the needed product.2.Which of the following best describes the author?A. Kind and understanding.B. Courageous and warm-hearted.C. Responsible and humorous.D. Sympathetic and open-minded.3. What is the main message the author wants to convey?A. Working as a cashier is no easy job.B. Those who are rude deserve bad karma.C. Doing acts of kindness will make people feel good.D. We should treat others the way we want to be treated.【答案解析】 21-23 CAD1.C。

2020届高三第二学期第一月考英语科试题第一部分听力（共两节，满分30分）第一节听下面 5 段对话。

每段对话后有一个小题，从题中所给的A, B, C 三个选项中选出最佳选项。

听完每段对话后，你都有10 秒钟的时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

1.What is the weather like today?A. Cool.B. Warm.C. Hot.2. What does the man want?A. A one-dollar bill.B. Some coins.C. A parking place.3. What are the speakers discussing?A. Whether to hire more workers.B. How to improve production.C. When to put the new orders.4. Where are the speakers?A. In a park.B. In a lift.C. On a bus.5. What has the woman done?A. She has changed her car for a new one.B. She has taken a new car for a test drive.C. She has finished recording a radio program.第二节听下面 5 段对话或独白。

每段对话或独白后有几个小题，从题中所给的A, B, C 三个选项中选出最佳选项。

听每段对话或独白前，你将有时间阅读各个小题，每小题 5 秒钟；听完后，各小题将给出 5 秒钟的作答时间。

每段对话或独白读两遍。

听下面一段对话，回答第 6 和第7 两个小题。

6. When will the man leave the hotel?A. On October 22nd.B. On October 25th.C. On October 26th.7. How much will the man pay for the room?A. $ 70.B. $ 280.C. $400.听下面一段对话，回答第8 和第9 两个小题8. Why didn’t the man choose the ￡12.50 tickets?A. The tickets weren’t enough.B. The time was not suitable.C. The seats were at the back.9. Which circus tickets did the man decide to buy?A. The ￡15.00 ones.B. The ￡15.50 ones.C. The ￡17.50 ones.听下面一段对话，回答第10 至第12 三个小题。