成都市实验外国语学校(西区)高三第一次诊断性模拟考试2
2021年成都市实验外国语学校西区高三英语一模试题及答案
2021年成都市实验外国语学校西区高三英语一模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AWhen it comes to the greatest inventions of the world, China’s name is sure to be mentioned several times. There are hundreds of things which were invented by the Chinese.AlcoholShocked? I was because when they said alcohol I thought about either the US or the UK. China had never crossed my mind. In China, alcohol was made by two legendary persons named Yi Di and Du Kang who belonged to the Xia Dynasty. This period was about 2000 BC - 1600 BC. Research says that in ancient China, beer with 4% alcoholic content was widely consumed by people.TeaChina is the proud inventor of tea which was first drunk by Shen Nong, a Chinese emperor around 2737 BC. Tea production was rapidly developed, making tea a popular drink during the Tang and Song Dynasties.The Mechanical ClockHave you ever wondered what on earth we would be doing without any idea of time? A clock really is an invention without which things were incomplete. The credit of making the first mechanical clock goes to ancient China. The first mechanical clock was invented by Yi Xing in the Tang Dynasty. This was during 618 and 907.Silk FabricSilk, the favorite fabric of many girls out there, is also a Chinese invention. Although we all know that silk is made by silkworms, it was Chinese people who first invented a way to harvest the silk and then use it to make clothes. The oldest silk which has been found so far is in Henan Province and dates back to 3630 BC.1.We can learn from Paragraph 2 that ________.A.people in the US like alcoholB.beer was popular in the Xia DynastyC.Yi Di and Du Kang invented alcohol by accidentD.the author didn’t know alcohol is a Chinese invention2.The author asks the question in Paragraph 4 to show ________.A.ancient Chinese inventors were wiserB.many things in our lives are incompleteC.ancient Chinese people never wasted timeD.the invention of the mechanical clock is important3.Which of the following invention has a longer history?A.Tea.B.Alcohol.C.Silk fabric.D.The mechanical clock.BAt the age of 50, Nina Schoen expects to have a long lifeahead of her, but has thought a lot about death—and why people are so reluctant to talk about it: “It’s going to happen to all of us,” she says, “but it should be a more positive experience than the fear we put into it.”When she first heard about a new end-of-life process that turns the body into compost (堆肥), “I was really moved by the idea,” says Schoen, who became one of the first to reserve a spot with a Seattle-based company called Recompose, the county’s first funeral home to offer human composting.Last year Recompose began transforming bodies to soil, more formally known as natural organic reduction. Before that, end-of-life options in the U.S. were limited to burial or cremation (火化), both of which come with environmental costs—U.S. cremations alone dump 1.7 billion pounds of carbon dioxide into theatmosphere every year.Katrina Spade pioneering the composting movement has spent a decade developing the process in hopes of offering people a greener option for death care. “I wondered, ‘What if we had a choice that helps the planet rather than harms it?’” Spade tells PEOPLE. “To know that the last gesture you’ll make will be gentle and beneficial and it just feels like the right thing to do.”After she had her own two sons, she began to wonder what she might do with her body after death. A friend who knew her interest in the topic reminded her that farmers sometimes compost the body of cows, and thatsparkedan idea for her theory: “If you can compost a cow, you can probably compost a human,” she thought, and she set about designing a facility to do just that.“This is about giving people another choice,” Spade says. “At first, people react with shock—‘You really can do that?’ But so many people today are looking at their impact on the Earth. This is a popular thing because when you die, you can give back to the planet.”4. How do people react when it comes to death according to paragraph 1?A. They are unwilling to comment.B. They can face it without fear.C. They feel it a positive experience.D. They would like to compost their bodies.5. What can we know about the company Recompose?A. Its CEO is Katrina Spade.B. It is located in Seattle.C. It was founded to resist cremation.D. It has spent 10 years composting bodies.6. What does the underlined word “sparked” probably mean?A. Changed.B. Compromised.C. Quitted.D. Inspired.7. What message does the author seem to convey in the text?A. A little things in our life can bring in big outcomes.B. We human beings should do all we can to help the earth.C. Composting is so popular that we should reserve a spot soon.D. We should reject burial because of its harm to environment.CFor most thinkers since the Greek philosophers, it was self-evident that there is something called human nature, something that constitutes the essence of man. There were various views about what constitutes it, but there was agreement that such an essence exists—that is to say, that there is something by virtue of which man is man. Thus man was defined as a rational(理性的) being, as a social animal, an animal that can make tools, or a symbol-making animal.More recently, this traditional view has begun to be questioned. One reason for this change was the increasing emphasis given to the historical approach to man. An examination of the history of humanity suggested that man in our time is so different from man in previous times that it seemed unrealistic to assume that men in every age have had in common something that can be called “human nature.” The historical approach was strengthened, particularly in the United States, by studies in the field of cultural anthropology (人类学). The study of primitive peoples has discovered such a diversity of customs, values, feelings, and thoughts that many anthropologists arrived at the concept that man is born as a blank sheet of paper on which each culture writes its text. Another factor contributing to the tendency to deny the assumption of a fixed human nature was that theconcept has so often been abused as a shield(盾牌) behind which the most inhuman acts are committed. In the name of human nature, for example, Aristotle and most thinkers up to the eighteenth century defended slavery. Or in order to prove the rationality and necessity of the capitalist form of society, scholars have tried to make a case for acquisitiveness, competitiveness, and selfishness as natural human characters. Popularly, one refers cynically（愤世嫉俗地）to “human nature” in accepting the inevitability of such undesirable human behavior as greed, murder, cheating and lying.Another reason for disbelief about the concept of human nature probably lies in the influence of evolutionary thinking. Once man came to be seen as developing in the process of evolution, the idea of a substance which is contained in his essence seemed untenable. Yet I believe it is precisely from an evolutionary standpoint that we can expect new insight into the problem of the nature of man.8. Most philosophers believed that human nature ________.A. is the quality distinguishing man from other animalsB. consists of competitiveness and selfishnessC. is something partly innate and partly acquiredD. consists of rationality and undesirable behavior9. The traditional view of “human nature” was strongly challenged by ________.A. the emergence of the evolutionary theoryB. the historical approach to manC. new insight into human behaviorD. the philosophical analysis of slavery10. According to the passage, anthropologists believe that human beings ________.A. have some characters in commonB. are born with diverse culturesC. are born without a fixed natureD. change their characters as they grow up11. The author mentioned Aristotle, a great ancient thinker, in order to ________.A. emphasize that he contributed a lot to defining the concept of “human nature”B. show that the concept of “human nature” was used to justify social evilsC. prove that he had a profound influence on the concept of “human nature”D. support the idea that some human characters are inherited.DA 24-year-old female space commander has become a viral sensation on Chinese social media for her work.Zhou Chengyu was in charge of the rocket connector system---described as a vital role. Her story in particular has drawn the public’s attention given her young age. Social media users have been celebrating her brilliance andreferring to her as pride of the country.Being the youngest of the team, Zhou Chengyu was born in1996 intheprovinceofGuizhou. She is certainly not “old” enough compared with her colleagues, but she is known at work as "Big Sister” as a sign of respect. Once in a 3-km running contest, she actually beat half of her male counterparts. Although work shifts are not uncommon at the Wenchang Spacecraft Launch Site, each shift requires tremendous courage because of the different background knowledge. However, for Zhou Chengyu, she experienced multiple positions in 5 launching tests and now she is the youngest commander at the site.Despite carefulness and high responsibility at work, she is just like her peers in normal life. Eating snacks and shopping are her favorite free-time activities. Her high school teacher remembers her as tough and determined. “She always had a dream of becoming scientist,” said her physics teacher.According to her colleague, Zhou Chengyu was very surprised when she found out shewent viralonline. She said that she was happy when she saw people online regarding her as the pride of the country, and yet she kept saying that she was “nobody but normal worker at a launch site” and there are a lot more people just like her going unnoticed while doing the hardest job to guarantee a better future for the Chinese space program. She also said that she wished to remain her current status and continue doing her work with or without the popularity.12. What makes Zhou Chengyu the pride of the country?A. Her young age.B. Her vital role in her work.C. Her great courage.D. Her responsibility at work.13. Which of the following words can best describe Zhou Chengyu?A. Learned and confident.B. Respectable and generous.C. Patient and responsible.D. Modest and determined.14. Which of the following can replace the underlined words in paragraph 5?A. took prideB. made a contributionC. became a hitD. made an achievement15. What can be the best title for the text?A. A Young PrideB. A Successful ColleagueC. An Extraordinary DreamD. An Ambitious Commander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。
2020年成都市实验外国语学校西区高三英语一模试题及答案
2020年成都市实验外国语学校西区高三英语一模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AJuanito Estrella has been a housekeeping manager on the US-based large passenger ship Carnival Spirit for 18 months and feels he has found the suitable position in his career(职业). He has always wanted to travel. “I guess I am a really restless spirit.I like traveling, so when the chance came, I jumped at it,” he says.The chance came in the form of a newspaper advertisement for work on cruise ships（游船）. At the time Estrella was the housekeeping manager at a Melbourne hotel. He applied and, after two interviews, a medical check and police clearance, the job was his.Estrella is responsible(负责的)for the cleanliness of the ship, making sure that 160 crew work properly. “I enjoy it because there is no other work-you wake up each day in a different place anda different culture. It’s exciting when you go to the next country and you don’t understand the language,” he says.Estrella likes being busy and getting to know people from all over the world. The 1,000 crew come from 94 countries, and Estrella has learnt Spanish and a little Croatian.But there is adownside. “You cannot get really drunk...because you have safety responsibilities to yourself and others,” he says. “You don’t really think about home.You start to think about home only when you get closer to your vacation and wonder what you’ll be doing.”Life on the ship is anything but cruising. Estrella and his fellows work at least 10 hours a day, seven days a week. He warns the job is not for everybody. “You have to love being busy and be prepared to work every day-and to give up drinking too much alcohol.” In his spare time, if the ship sails into a port, Estrella explores it, otherwise he works out in the crew’s gym, goes on the internet or calls home.1.Which of the following is true?A.He has been a housekeeping manager for 18 months.B.He doesn’t drink wine now.C.He cannot speak a foreign language.D.He used to be a housekeeping manager.2.The underlined word“downside”in paragraph 5 probably means ________ .A.disappointmentB.disadvantageC.failureD.loss3.In the last paragraph, the writer thinks that life on the ship is ________.A.not a tiring journey at allB.just an interesting voyageC.far from a voyage for pleasureD.more than a pleasant travel by seaBYou run into the grocery store to quickly pick up your item. You grab what you need and head to the front of the store. After quickly sizing up the check-out lines, you choose the one that looks fastest. You chose wrong. People getting in other lines long after you have already checked out and headed to the parking lot. Why does this seem to always happen to you?Well, as it turns out, it's just math that is working against you. A grocery store tries to have enough employees at the checkout lines to get all their customers through with minimum delay. But sometimes, like on a Sunday afternoon, they get super busy. Because most grocery stores don't have the physical space to add more checkout lines, their system becomes overburdened. Some small interruption — a price check, a particularly talkative customer — will have downstream effects, holding up the entire line behind them.If there are three lines at the store, these delays will happen randomly at different registers (收银台). Think about the probability. The chances of your line being that fastest one are only one in three, which means you have a two-thirds chance of not being in the fastest line. So it's not just in your mind: Another line is probably moving faster thanyours.Now, mathematicians have come up with a good solution, which they call queuing theory, to this problem: Just make all customers stand in one long snaking line, called a serpentine line, and serve each person at the front with the next available register. With three registers, this method is about three times faster on average than the more traditional approach. This is what they do at most banks, Trader Joe's, and some fast-food places. With a serpentine line, a long delay at one register won't unfairly punish the people who lined up behind it. Instead, it will slow everyone down a little bit.4. What phenomenon is described in the first paragraph?A. Queuing in a line.B. A shopping experience.C. A rush in the morning.D. Cutting in a line.5. According to the article, what may cause delays in checking out?A. The lack of employees in the grocery store.B. Some unexpected delays of certain customers.C. The increasing items bought by customers.D. A worsening shopping system of the store.6. What is the solution given by mathematicians?A. Employing more workers for checking out.B. Limiting the number of queuing people.C. Making only one line available.D. Always standing in the same line.7. What's the principle behind the queuing theory?A. To pursue the maximum benefit.B. To leave success or failure to luck.C. To avoid the minimum loss.D. To spread the risk equally among everyone.CAs summer approaches, many kids and teenagers may find that they have more time in hand. One great way to make use of the extra time is to go on an adventure and travel. Clearly, I am not a naturally adventurous person, but I have found that takingthe risk and challenging myself to explore and travel to unfamiliar places can be a very rewarding experience.Because I am usually quite busy during the school year, most of my travels take place during the summer. Over the past few summers, I have hiked in the Grand Canyon, explored Niagara Falls, and camped out in upstate New York. Although these experiences are varied, they are similar in that they instill (灌输) a sense of appreciation for nature and a more balanced view on life. When I hiked in the Grand Canyon, for example, I was in awe(敬畏) of the geological influences that shaped the canyon.Adventures, of course, are not limited to hiking. There are many other choices, such as camping, volunteering in a foreign environment and travelling to different countries. In my opinion, adventures are more enjoyable with family or a few friends. There is a sense of bonding that one only gets through spending time together in outdoor adventures. For example, when I was in Boy Scouts, I often went on weekend camping trips with my friends. When I came back from a Boy Scouts camping trip, I often was eager to go outside more and explore the parks and nature around me.Next fall, I will attend college. In the meantime though, I hope to make the most of my summer to explore and travel. Now, I am planning on hiking and camping out in Maine.When I visited Maine last fall, I was amazed by how beautiful it was and the tall trees and coasts that exist, and I really hope to enjoy the beauty of nature there this summer.8. We can learn from the first paragraph about the author?A. He is an adventurous person by natureB. He likes challenging himself by travellingC. He enjoys travelling with other adventurersD He needs others’ help when going on an adventure9. Which of the following can make people’s adventure more enjoyable according to the author？A. Going to different countries.B. Going to unfamiliar places.C. Travelling withtheir family or friends.D. Travelling to distant places by themselves.10. What will the author do this summer？A. Explore Niagara Falls.B. Hike in the Grand Canyons.C. Camp out in upstate New York.D. Hike and camp out in Maine.11. Who is probably the author?A. A high school student.B. A college student.C. A friendly guide.D. A warm-hearted teacher.DIt’s a big change from homeless teen to Yale (耶鲁)medical school student, butperseverancepaid off for Chelesa Fearce of Clayton County, Georgia.Fearce was a fourth grader when her mom was diagnosed (诊断) with Lymphoma (淋巴瘤).That began a hard time for the family. They had to move in and out of shelters,hotels and even the family car.“I know I have been made stronger. I was homeless. My family slept on the floor and we were lucky if we got more than one full meal a day. Getting a shower, food and clean clothes was an everyday struggle,” Fearce said in a speech she gave at her high school graduation ceremony. Fearce overcame her day-to-day struggles by focusing on a better day. “I just told myself to keep working, because the future will not be like this anymore. And that helped me get through,” she told WSBTV.Fearce was determined to be a good role model for her younger sister. She found inspiration in her late grandmother, struggling with deadly diseases, who gave Fearce emotional support. In her junior and senior year, Fearce took both high school and college courses, missing out on the free meals she depended on so she could get to her college classes. Despite having to use her cellphone to study after the shelter lights were turned off at night,she not only graduated as valedictorian (毕业生代表) of her 2013 class with a 4.5 grade average, but was also given a ride scholarship—including a meal plan to Spelman College in Atlanta.After graduation, she worked full time for two years at the National Institutes for Health inBethesda,Maryland,doing research on drugs. Last fall, she entered Yale and set a course to earn both a PhD and medical degree.12. What does the underlined word “perseverance” in paragraph 1 refer to?A. instant passion.B. continuous efforts.C. great patience.D. selfless ambitions.13. How did Fearce feel facing the sufferings?A. Sad and disappointed.B. Stressed and defeated.C. Determined and confident.D. Joyous and contented.14. What can we know about Fearce’s learning experience?A. Her grandma encouraged her to study medicine.B. Her high school offered her free meals and courses.C. She failed to study late due to frequent power cut.D. She gained remarkable high school achievement.15. What can be a suitable title for the text?A. From Homeless to YaleB. Meet American’s Top GirlC. Disabled but not DefeatedD. Chelesa Fearce: A Girl of Many Talents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。
2020年成都实验外国语学校西区高三英语一模试题及答案
2020年成都实验外国语学校西区高三英语一模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AOver the years, I’ve been guilty of hastily shutting the front door to many strangers when they came knocking with the intention of selling things. But earlier this year, around Easter time, a dear friend of mine had an experience that changed my mind and perception towards these “intruders”.Linda, who recently moved to a new neighbour hood, had been housebound all week suffering from a severe case of flu when, early one morning, there was the terrible knock on her front door. Peering out the window, she saw two young ladies demurely (端庄地) holding leaflets and a TV set model. She knew of a large TV set establishment nearby and assumed a message was about to be gently delivered. “This is the last thing I need today,” she muttered to herself and hesitantly opened the door.Coughing, she poked her head out and impatiently informed them she wasn’t the slightest bit interested in any TV whatsoever. Furthermore, she added, she was feeling quite unwell and abruptly shut the door. The ladies politely turned and left in silence.A few hours later, another knock. Linda glanced out the window and to her surprise, there were the same two ladies, back again. Really annoyed this time, she opened the door ready togive them a piece of her mind. Before she could speak, with concerned looks on their faces, these women handed Linda what looked to be a dish, saying, “We’re so sorry we disturbed you earlier. We thought you may like this homemade chicken soup. Hopefully it might make you feel a little better.”Linda was taken aback by this lovely gesture. Being new to the area, she didn’t know many neighbours or people who could assist her with shopping or errands (跑腿) so the gesture was all the more appreciated. She could only smile sheepishly and sincerely thanked them. With that, the ladies left.After she related this story to me, I thought about how touching this deed really was. Especially in today’s world where sadly, kindness and thoughtfulness seem so rare. I also realized that thinking about others and showing kindness is the real essence of love.1. What does the expression “give them a piece of her mind”in Paragraph 4 mean?A. Scold them severely.B. Drive them away.C. Refuse them directly.D. Speak out her idea.2. What can be learned about Linda from the passage?A. Linda always hastily shut the front door to many people.B. Linda was not a little interested in any TV whatsoever.C. Linda was very grateful to the ladies for their chicken soup.D. Linda would buy their TV set in reward for the ladies’ chicken soup.3. What’s the best title for the passage?A. A Chicken SoupB. Soup for the soulC. The Real Essence of LoveD. A Friend’s experienceBEvery day, millions of shoppers hit the stores in full force, searching wildly for the perfect gift.Aside from purchasing holiday gifts, most people regularly buy presents for other occasions throughout the year, including weddings, birthdays, anniversaries, and graduations. This frequent experience of gift-giving cancause uncertain feelings in gift-givers. Many enjoy the opportunity to buy presents because gift-giving offers a powerful means to build stronger bonds, while many worry that their purchases will disappoint rather than delight the intended recipients (接受者).Anthropologists describe gift-giving as a positive social process, serving various political, religious, and psychological functions. Economists, however, offer a less favorable view. According to Waldfogel, gift-giving represents an objective wasteof resources. People buy gifts that recipients would not choose to buy on their own, or at least not spend as much money to purchase (a phenomenon referred to as‘‘the deadweight loss of Christmas”).What is surprising is that gift-givers have much experience acting as both gift-givers and gift-recipients, but nevertheless tend to overspend each time they set out to purchase a meaningful gift. In the present research, we propose a unique psychological explanation for this overspending problem — gift-givers link how much they spend with how much recipients will appreciate the gift. Though it seems natural to gift-givers, such an assumption may be unfounded. Indeed, we propose that gift-recipients will be less likely to base their feelings of appreciation on the value of a gift than givers assume.Why do gift-givers assume that gift price is closely linked to gift-recipients’ feelings of appreciation? Perhaps givers believe that more expensive gifts communicate a stronger sense ofthoughtfulness and consideration. According to Camerer and others, gift-giving represents a symbolic ritual (习俗), by which gift-givers attempt to signal their positive attitudes towards the recipient and their willingness to invest resources in a futurerelationship.In this sense, gift-givers may be motivated to spend more money on a gift in order to send a “stronger signal”. As for gift-recipients, they may not interpret smaller and larger gifts as representing smaller and larger signals of thoughtfulness and consideration.The idea of gift-givers and gift-recipients being unable to account for the other party’s viewpoint seems confusing because people slip in and out of these roles every day. Yet, despite the experience as both givers and receivers, people often struggle to apply information gained from one role in another. In theoretical terms, people fail to use information about their own preferences and experiences to produce more efficient outcomes in their exchange relations. In practical terms, people spend hundreds of dollars each year on gifts, but somehow never learn to estimate their gift expense according to personal insight.4. The author uses “the deadweight loss of Christmas” in Paragraph 2 to express ________.A. gift-givers don’t spend much money during holidaysB. gift-givers don’t ask recipients what gifts they preferC. gift-givers buy improper and expensive giftsD. gift-givers have difficulty in choosing gifts5. According to the passage, people buy gifts to ________.A. receive gifts in returnB. enjoy the feeling of shoppingC. help recipients to save moneyD. better relationships with recipients6. What can we learn from the passage?A. People’s high living standards require expensive gifts.B. Gift-givers buy gifts based on their experiences as recipients.C. Anthropologists think gift-giving meets different human needs.D. Recipients judge the depth of friendship according to the gift price.7. Why did the author write this article?A. To criticize people’s gift-buying habits.B. To analyze people’s gift-giving behaviors.C. To offer advice on how to improve relationships.D. To remind people not to overlook others’ preferences.CIt was once a shoreline buried by enough garbage to make it invisible (看不见的), thus, given the unfortunate nickname "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.8. 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.9. 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.10. 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.11. 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.DJanet Fein, aged 84, received her bachelor's degree from the University last week, having waited a long time for her chance to reach that goal.Growing up in the Bronx area ofNew York City, Fein worked at a dress manufacturer after graduating early at the age of 16. After getting married, she spent 18 years staying home with her children. She held several jobs through her life, including 20 years as a secretary at a hospital until her retirement at age 77.Fein has had a full life. But even then, she was not ready to take it easy and rest during a well-earned retirement. She decided to major in sociology because she felt it was “substantial.”Fein took part in a state program that lets people who are 65 and older take free classes at public universities in Texasand kept going to class even as her health conditions worsened. During her studies, it became necessary for her to use a walker to get around and she required oxygen. She also developed knee problems. So, Fein took online classes to finish the last part of her degree requirements.Sheila Rollerson, Fein' scollege advisor, and Carol, the professor told the media that Fein never showed signs of giving up even with all of her difficulties. She would speak up a lot in class and it just made for a more interesting class.Fein has also inspired Renee Brown, one of Fein's caregivers. At 53, Renee plans to begin nursing school to further her career. “Renee, you can do it. If I can do it you can do it, and you will feel so good about it,” Brown remembers what Fein told her.12. What is the second paragraph mainly about?A. Janet Fein's growthB. Janet Fein's aimC. Janet Fein's job experiencesD. Janet Fein's regrets13. What does the underlined phrase “substantial” in paragraph 3 refer to?A. InterestingB. ValuableC. EasyD. Affordable14. What can be learned about Fein according to the passage?A. Fein lived on little money after her retirement.B. Fein had a problem with her arms while at universities.C. The Internet played a role in Fein's university education.D. The good health helped Fein get her bachelor's degree.15. What is Janet Fein like according to the passage?A. Hardworking and humorous.B. Determined and generous.C. Positive and patient.D. Inspiring and perseverant.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。
2020年成都实验外国语学校西区高三语文一模试卷及参考答案
2020年成都实验外国语学校西区高三语文一模试卷及参考答案一、现代文阅读（36分）(一)现代文阅读I(9分)阅读下面的文字，完成下列小题。
材料一：近年来，一系列智能科技的应用助推了自动驾驶技术日渐成熟，然而，当前无人辅助的自动驾驶汽车要真正上路还有不小的距离。
中国人工智能学会理事长、中国工程院院士李德毅说，当前自动驾驶的主流技术路线要求根据路况数据，生成对应不同环境的驾驶模式。
理论上，这一自动驾驶模式必须输入无穷多的数据，形成无穷多的驾驶模式供计算机选择,但要实现这一点很困难。
自动驾驶研发存在技术难题。
现实中，智能化程度较低的辅助驾驶技术已经应用，但高级别的自动驾驶以机器为主导，应具备全部自动驾驶功能。
当前，推进高级别的自动驾驶技术，产业界存在两种不同的研发路径。
第一种是“一步到位”路线，即从一开始就研发彻彻底底的自动驾驶汽车，另一种则是“步步为营”路线，即在传统的汽车上逐渐新增一些自动驾驶的功能，最终过渡到完全自动驾驶的阶段。
专家表示，前者将面临技术不成熟和成本高昂的问题，后者则容易被现实束缚，不易取得突破性进展。
驭势科技首席执行官吴甘沙认为，折中的路线或许有助于破解自动驾驶实现难题，即把“全自动驾驶”的技术应用于高频、刚需、可量产的场合，在提升技术成熟度和经济性的同时，积累更多的复杂场景数据，提高“全自动驾驶”技术的普适性。
他认为，自动代客泊车、物流车和快速公交系统这几个场景符合高频、刚需、可量产的要求，有助于推动全自动驾驶技术落地和数据积累。
(摘编自李玉楼喻思南《无人车上路要跨过这些坎》，《人民日报》2018年11月02日）材料二：美国智库兰德公司2016年底发布报告指出，自动驾驶技术到2035年趋于成熟，比人类驾驶安全约90%，并在2070年可累计挽救110万人的生命。
这意味着自动驾驶时代的来临，并由此引发汽车行业的变革和价值链重构。
对于自动驾驶这片“蓝海”，各国政府制定了相关政策和法案增强研发投入、加大资金支持，规范检测标准等推动自动驾驶技术的发展，争相提出在2020年前后实现自动驾驶汽车量产化，以抢占人工智能的竞争高地。
成都市实验外国语学校(西区)高三第一次诊断性模拟考试(教师版)
成都市实验外国语学校（西区）高三第一次诊断性模拟考试（教师版）一、选择题（本大题共10小题，每小题5分，共50分。
在每小题给出的四个选项中，只有一项是符合题目要求的。
）1．记集合22{|4},{|30}M x x N x x x =>=-≤，则N M = （ A ） A ．{|23}x x <≤ B ．{|02}x x x ><-或C ．{|23}x x -<≤D ．{|02}x x << 2．已知复数12122,1,z i z i z z z =+=-=⋅则在复平面上对应的点位于（ D ）A ．第一象限B ．第二象限C ．第三象限D ．第四象限3．在等比数列{}n a 中，5113133,4a a a a ⋅=+=，则155a a =（ C ）A ．3B ．13C ．3或13D ．133--或4．已知a ，b 均为单位向量，它们的夹角为60︒，那么26a a b +⋅等于（ B ）A ．1+B ．4C ．3D ．75．函数cos()sin()23y x x ππ=++-具有性质（C ）A 6x π=对称B ．最大值为1，图象关于直线6x π=对称C (,0)6π对称D ．最大值为1，图象关于(,0)6π对称6．已知函数(0.5)(1),1()log 1a a a x x f x x x --<⎧=⎨≥⎩在R 上为减函数，则a 的取值范围是（ B ）A ．01a <<B ．00.5a <<C ．0.5a <D ．0.51a <<7．已知命题11:242x p ≤≤，命题15:[,2]2q x x +∈--，则下列说法正确的是（ B ）A ．p 是q 的充要条件B ．p 是q 的充分不必要条件C ．p 是q 的必要不充分条件D ．p 是q 的既不充分也不必要条件8．六个人排成一排，甲乙两人中间至少有一个人的排法种数有（ A ） A ．480 B ．720 C ．240D ．3609．已知四边形ABCD 上各点在映射:(,)(1,2)f x y x y →+的作用下的象集为四边形''''A B C D ，若四边形''''A B C D 的面积为12，那么四边形ABCD 的面积为（ B ）A ．9B ．6C D ．1210．设函数()(1)1xf x ax x x =+>-，若a 是从—1，0，1，2三数中任取一个，b 是从1，2，3，4五数中任取一个，那么()f x b >恒成立的概率为（ D ）A ．12 B ．720 C ．25 D ．920二、填空题（共5小题，每小题5分，共20分。
2021届成都市实验外国语学校西区高三语文一模试卷及答案解析
2021届成都市实验外国语学校西区高三语文一模试卷及答案解析一、现代文阅读（36分）(一)现代文阅读I(9分)阅读下面的作品，完成下面小题。
门前流过的溪①溪在门前小桥下穿过，瘦得像根弯曲的高粱秆。
②鹊雀窝沟里的这条溪没有名字，它瘦弱、普通。
瘦弱得孩子踩一脚就把它踩断了，普通得山里到处都有，随便在哪里迈一步，都会踩着。
所以，这样的溪，连起个名字的必要都没有。
它在门前流了很多年，也确实一直没有一个名字。
③虽如此，它也由来已久了。
久到哪朝哪代，我不知道。
爷小的时候就有，爷的爷小的时候也有。
溪水虽小，却真是很久远了。
想想，我们居住的山沟，就是被溪水像刀锋一样在大地上一点点划开的一道伤痕。
这溪，也许原来的水量很大，时间太久，它才老成这样。
④如此，这条老溪诞生于哪一天，我就不得而知了。
也许是唐宋，也许是秦汉，还可能是上古，或者更早。
那时候这里也许还是一片平原或者丘陵，柴草茂盛，荒无人烟，河水两岸，我想象着只有一些野狼或（a）风情万种的狐狸。
⑤溪水虽瘦，却也（b）源远流长。
一条山溪，会有许多源头，像一只手臂伸出的手指，山就这样被它抓住了。
或者更像一棵树，向大地深处伸出许多根子，水就被它吸出来了。
门前这条溪，我看见它的许多源头，有的在地头的墙窟里，有的在山上的石头缝中，还有的就在一蓬柴草的根部。
清凉的泉水，从不同的地方汩汩地流出来，向低洼处流下去，两条碰在一起，就合二为一，分不清彼此了。
之后又有更多的细流加入进来，混合成山里的溪。
⑥汇流到门前的溪，有一股是从东山流下来的，流到门前，有一道几米高的瀑布，平时淅淅沥沥的，或流或断，雨季里水多了，就成了一条白练，日日夜夜哗哗作响，间或遇到暴雨，那里就呈现出一道（c）奇伟壮阔的土黄色瀑布，倾泻而下，隆隆有声。
⑦还有一股是从东山与北山之间的山沟里流出来的，从东北角跌宕而下，平时羸弱，遇雨丰盈。
我常在这股溪水里戏耍，甚至粘着满脚的泥，就踩到水里，可是那溪不在乎，翻几个带着泥土的滚儿，顾自流去。
2020届成都实验外国语学校西区高三英语一模试题及答案
2020届成都实验外国语学校西区高三英语一模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ADive with Big SharksOur shark dive adventures make use of hookah systems and shark cages. A hookah system is a system of providing air from the surface to divers down below. Cage divers breathe by using a regulator connected to an air hose.Is SharkDiving Dangerous?Yes. You could get sunburnt. You could hit your head on the top bunk getting out of bed. You could fall overboard. As for a shark attack, according to the International Shark Attack File, you are far more likely to be killed by a dog or a deer.Pricing & DetailsOne day Cage Diver Adventure $ 875Our expert shark diver team will accompany you to the best viewing areas within the Marine Sanctuary. There, we'll drop our cage and prepare to provide you with a view you'll never forget.No dive experience is necessary. Our cages sit just below the surface. You'll be able to breathe comfortably from your snorkel or air hose while you move about the cage, taking photos and having fun.Top Shark Adventure $ 375If you want to see great white sharks but prefer them a little further away, we offer great top-side shark viewing from our observation deck(甲板). Help scan the horizon for fins and watch for sharks attacking their prey(猎物).Important NoteThere's No Shark GuaranteeAlthough we go to the best places at the best time of year, we cannot guarantee you'll see sharks. We've been very successful in past shark seasons and expect another incredible year. However, if we see no sharks, there is no refund(退款).1.Which of the following is TRUE about the two adventures?___________.A.Top Shark Adventure makes use of hookah systems.B.Cage Diver Adventure offers you a view of the bottom of the sea.C.Cage Diver Adventure is less interesting than the other.D.Top Shark Adventure is suitable for those worried about danger.2.We can learn from the advertisement that there might be a risk that____________.A.you fail to achieve your purpose of the tripB.you are out of breath deep down in the seaC.you are hurt by a shark while diving thereD.you suffer from lack of skill in shark diving3.It can be inferred from the advertisement that shark diving is____________.A.difficult but excitingB.challenging and tiringC.amazing and enjoyableD.expensive but popularBDogs are often referred to as “man's best friend”. But MacKenzie, a four-pound Chihuahua (奇瓦瓦狗), who was named winner of the 2020 American Hero Dog competition, is making the world a better place for humans and animals alike. Often called the “Oscars for dogs”, the award recognizes dogs who make great contributions to society.This year's competition attracted over 400 competitors from across the country. While all were impressive, it was tiny MacKenzie who won the judges' hearts. Born at a rescue shelter in Hilton, New York, in 2013, she had a cleft palate (腭裂) that required her to be tube fed for the first year of her life. A life-saving operation, performed in 2014, gave her the ability to eat and drink independently, enabling the tiny dog to focus on doing what she loved most: taking care of others.The seven-year-old Chihuahua is now gainfully “employed” by the Mid Foundation, a Rochester, New York-based non-profit organization that shelters and cares for animals born with disabilities. MacKenzie's official job is “to provide love and care for baby rescue animals born with birth defects”. The Chihuahua is good at her job and hasnurturedmany different species-from puppies to kittens to turkeys, squirrels, birds and even a goat. She acts as their mother and teaches them how to socialize, play, and have good manners.In addition to her role as an animal caretaker, MacKenzie also has the important job of greeting the foundation's volunteers and friends. The incredible dog, who has lost her ability to bark, also visits area schools to help children understand physical disabilities in both animals and people. Her heart-warming and inspiring story makes MacKenzie worthy of America's top dog honor!4. What made MacKenzie American Hero Dog?A. Being man's best friend.B. Her struggle with disabilities.C. Rescuing animals with disabilities.D. Her contributions to a better world.5. What can we infer about MacKenzie from Paragraph 2?A. Her growth path was not easy.B. She was deserted by her owner.C. She was operated on at two years old.D. She still needs taking care of by others.6. What does the underlined word “nurtured” in Paragraph 3 mean?A. Trained.B. Comforted.C. Tended.D. Abused.7. Which can be a suitable title for the text?A. MacKenzie—The Most Hard-working DogB. MacKenzie—America's “Most Heroic Dog”C. Chihuahua—Inspiration of Positive EnergyD. Chihuahua—Appeal for Animals' ProtectionCI dropped out of college after my first year. Three years later, I returned to college after having been stuck in a dead-end job, working at a department store. I saw school as my way out. But I quickly found myself up against the same problems that had caused me to give up before. I was in over my head with college-level algebra (代数) and a heavy workload of reading and writing homework. In addition, I was still unsure of my career (职业) direction。
四川省成都市实验外国语学校2021-2022学年高三一诊理综生物试题(含答案解析)
11．尿素作为主要的化肥种类之一，也是一种重要的化工原料。前处理含尿素废水的方 法有 3 种：化学热力学水解法、微生物水解法及脲酶水解法。某研究小组欲从土壤中筛 选能高效分解尿素的细菌（目标菌）。回答下列问题。 （1）给农作物施用尿素，主要是为了给植物提供____________元素，过量施用随水土 流失后易造成水体污染，这种现象叫水体富营养化。为了筛选能分解尿素的细菌，在配 制培养基时需要添加 KH2PO4 和 Na2HPO4，其作用有____________（答出两点即可）。 运用固定化酶技术处理含尿素废水时应采用____________法对脲酶进行固定化。 （2）要从土壤中分离目标菌，最关键的实验操作步骤是____________，这样做的理由 是____________。 （3）为对分离得到的菌种作进一步的鉴定，常在固体培养基中加入酚红试剂，若菌落 周围出现____________，可以初步鉴定该种细菌为目标菌，其原理是 ____________________________________。
四川省成都市实验外国语学校 2021-2022 学年高三一诊理综
生物试题
学校:___________姓名：___________班级：___________考号：___________
一、单选题 1．已知①酶、②抗体、③激素、④糖原、⑤脂肪和⑥核酸，都是人体内有重要作用的 物质。下列说法正确的是（ ） A．①②③都是氨基酸通过肽键连接而成的 B．③④⑤都由 C、H、O、N 等元素组成 C．①②⑥都是由含氮的单体连接成的多聚体 D．④⑤⑥都是人体细胞内的能源物质 2．据美国中文网 7 月 3 日报道，一名中国留学生因吸食“笑气”而引发身体机能多方面 紊乱“笑气”即 N2O，医疗上曾用作可吸入性麻醉剂，其麻醉机制与位于突触后膜的一种 名为“NMDA”的受体的阻断有关。下列有关说法错误的是（ ） A．神经元轴突末梢可形成多个突触小体，进而与其它神经元形成多个突触 B．神经元中的线粒体可以为突触小泡的运输提供能量 C．吸食“笑气”使人产生愉悦快乐的感觉属于非条件反射 D．N2O 引起麻醉的原因可能是影响了突触后膜上有关阳离子的内流 3．选择合适的试剂有助于达到实验目的。下列关于生物学实验所用试剂的叙述，错误 的是（ ） A．鉴别细胞的死活时，台盼蓝能将代谢旺盛的动物细胞染成蓝色 B．观察根尖细胞有丝分裂中期的染色体，可用龙胆紫溶液使其着色 C．观察 RNA 在细胞中分布的实验中，盐酸处理可改变细胞膜的通透性 D．观察植物细胞吸水和失水时，可用蔗糖溶液处理紫色洋葱鳞片叶外表皮 4．麻风杆菌是可以引起麻风病的一种细菌，可通过接触传播和飞沫传播，下列关于人 体第一次接触麻风杆菌后发生的反应，正确的是 A．人体唾液及体液中的溶酶体对麻风杆菌有一定的杀伤作用 B．麻风杆菌侵入人体后会被吞噬细胞吞噬，此过程与细胞膜的功能特点有关 C．消灭寄生于细胞内的麻风杆菌，既需要细胞免疫参与，也需要体液免疫参与 D．该免疫过程中产生抗体的浆细胞，来自于机体 B 细胞和记忆细胞的增殖分化 5．用无机催化剂镍可将半胱氨酸-tRNA 复合物上的半胱氨酸还原成丙氨酸，若用还原
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成都市实验外国语学校（西区）高三第一次诊断性模拟考试一、选择题（本大题共10小题，每小题5分，共50分。
） 1．记集合22{|4},{|30}M x x N x x x =>=-≤，则N M =（ A ） A ．{|23}x x <≤B ．{|02}x x x ><-或C ．{|23}x x -<≤D ．{|02}x x <<2．已知向量(1,2),(,4)a b x ==，若||2||b a =，则x 的值为（ D ）A ．4B ．2C ．4±D ．2±3．在等比数列{}n a 中，5113133,4a a a a ⋅=+=，则155a a = （ C ）A ．3B ．13C ．3或13D ．133--或4．已知a ，b 均为单位向量，它们的夹角为60︒，那么26a a b +⋅等于（ B ）A ．1+B ．4C ．3D ．75．函数cos()sin()23y x x ππ=++-具有性质（ C ）A 6x π=对称B ．最大值为1，图象关于直线6x π=对称C (,0)6π对称D ．最大值为1，图象关于(,0)6π对称6．已知函数(0.5)(1),1()log 1a a a x x f x x x --<⎧=⎨≥⎩在R 上为减函数，则a 的取值范围是（ B ） A ．01a << B ．00.5a << C ．0.5a < D ．0.51a <<7．已知命题2:23p x ≤≤，命题5:[2,]2q x ∈，则下列说法正确的是（ B ） A ．p 是q 的充要条件B ．p 是q 的充分不必要条件C ．p 是q 的必要不充分条件D ．p 是q 的既不充分也不必要条件8．六个人排成一排，甲乙两人中间至少有一个人的排法种数有（ A ） A ．480 B ．720 C ．240 D ．360 9．已知四边形ABCD 上各点在映射:(,)(1,2)f x y xy →+的作用下的象集为四边形''''A B C D ，若四边形''''A B C D 的面积为12，那么四边形ABCD 的面积为（ B ）A ．9B ．6C D ．1210．设函数()(1)1xf x ax x x =+>-，若a 是从1，2，3三数中任取一个，b 是从2，3，4，5四数中任取一个，那么()f x b >恒成立的概率为（ D ）A ．16B ．14C ．34D ．56二、填空题（共5小题，每小题4分，共25分。
将答案填在题中横线上）11.如图所示，程序框图（算法流程图）的输出结果是 15 .12．某校高三有1000个学生，高二有1200个学生，高一有1500个学生，现按年级分层抽样，调查学生的视力情况，若高一抽取了75人，则全校共抽取了185 人。
13.已知直二面角α− ι−β，点A ∈α，AC ⊥ι，C 为垂足，B ∈β，BD ⊥ι，D 为垂足．若AB=2，AC=BD=1，则D 到平面ABC 的距离等于_____________________.14．下列命题：①若()f x 是定义在[—1，1]上的偶函数，且在[—1，0]上是增函数，[,]42ππθ∈，则(sin )(sin )f f θθ>②若锐角,αβ满足cos sin ,.2παβαβ>+<则③若2()2cos 1,2xf x =-则()()f x f x π+=对x R ∈恒成立。
④要得到函数sin()24x y π=-的图象，只需将sin 2x y =的图象向右平移4π个单位。
其中是真命题的有 (2) （填正确命题番号）。
15．已知()f x 是定义在[-1，1]上的奇函数，且在[0，1]上是增函数，那么y =的值域是 。
三、解答题（本大题共6小题，满分74分）解答应写出文字说明及演算步骤。
16．（本小题满分12分）已知函数2()cos cos 1.f x x x x =++ （1）求()f x 的最小正周期及单调递减区间；（2）在△ABC 中，a ，b ，c 分别是角A 、B 、C 的对边，若()2,1,f A b ==△ABC的面积为2求a 的值。
17,（本小题满分12分）某花店每天以每枝5元的价格从农场购进若干枝玫瑰花，然后以每枝10元的价格出售。
如果当天卖不完，剩下的玫瑰花做垃圾处理。
（Ⅰ）若花店一天购进17枝玫瑰花，求当天的利润y (单位：元)关于当天需求量n （单位：枝，n ∈N ）的函数解析式。
（Ⅱ）花店记录了100天玫瑰花的日需求量（单位：枝），整理得下表：(i)假设花店在这100天内每天购进17枝玫瑰花，求这100天的日利润（单位：元）的平均数；(ii)若花店一天购进17枝玫瑰花，以100天记录的各需求量的频率作为各需求量发生的概率，求当天的利润不少于75元的概率。
18.在四面体ABCD 中，平面ABC ⊥平面ACD ，AB BC ⊥，AD CD =，CAD ∠=30︒． （Ⅰ）若AD =2，AB BC =2，求四面体ABCD 的体积；（Ⅱ）若二面角C AB D --为60︒，求异面直线AD 与BC 所成角的余弦值．（I ）解：如答（19）图1，设F 为AC 的中点，由于AD=CD ，所以DF⊥AC. 故由平面ABC ⊥平面ACD ，知DF ⊥平面ABC ， 即DF 是四面体ABCD 的面ABC 上的高， 且DF=ADsin30°=1，AF=ADcos30°在Rt △ABC 中，因AC=2AF=AB=2BC，由勾股定理易知,55BC AB ==故四面体ABCD 的体积1114.3325ABC V S DF ∆=⋅⋅=⨯=（II ）解法一：如答（19）图1，设G ，H 分别为边CD ，BD 的中点，则FG//AD ，GH//BC ，从而∠FGH 是异面直线AD 与BC 所成的角或其补角. 设E 为边AB 的中点，则EF//BC ，由AB ⊥BC ，知EF ⊥AB.又由（I ）有DF ⊥平面ABC ，故由三垂线定理知DE ⊥AB. 所以∠DEF 为二面角C —AB —D 的平面角，由题设知∠DEF=60°设,sin .2aAD a DF AD CAD ==⋅=则在,cot ,236a Rt DEF EF DF DEF ∆=⋅=⋅=中从而1.2GH BC EF ===因Rt △ADE ≌Rt△BDE ，故BD=AD=a ，从而，在Rt △BDF 中，122aFH BD ==，又1,22aFG AD ==从而在△FGH 中，因FG=FH ，由余弦定理得222cos 226FG GH FH GH FGH FG GH FG +-===⋅因此，异面直线AD 与BC 所成角的余弦值为解法二：如答（19）图2，过F 作FM ⊥AC ，交AB 于M ，已知AD=CD ，平面ABC ⊥平面ACD ，易知FC ，FD ，FM两两垂直，以F 为原点，射线FM ，FC ，FD 分别为x 轴，y 轴，z 轴的正半轴，建立空间直角坐标系F —xyz. 不妨设AD=2，由CD=AD ，∠CAD=30°，易知点A ，C ，D 的坐标分别为(0,(0,0,1),A C D AD = 则显然向量(0,0,1)k =是平面ABC 的法向量. 已知二面角C —AB—D 为60°，故可取平面ABD 的单位法向量(,,)n l m n =，使得1,60,.2n k n <>== 从而 222,0,61,n AD n m l m n l ⊥+==-++== 由从而由得设点B的坐标为(,,0);,,3B xy AB BC n AB l⊥⊥=由取，有223,0,,)0,9x y x x y x y y ⎧⎧+==⎪=⎧⎪⎪⎨⎨=⎪+=⎩⎪=⎪⎩解之得舍去易知l =与坐标系的建立方式不合，舍去.因此点B 的坐标为B 所以CB =从而cos ,||||AD CBAD CB AD CB -⋅<>===故异面直线AD 与BC 所成的角的余弦值为19．（本小题满分12分）已知函数22(),()()(,.)f x ax g x x a a b R =-=-∈ （1）当b=0时，若()f x 在(],2-∞上单调递减，求a 的取值范围；（2）求满足下列条件的所有整数对（a ，b ）：存在0x ，使得0()()f x f x 是的最大值，同时0()()g x g x 是的最小值。
20．（本小题满分13分）已知数列{}n a 是各项均不为0的等差数列，公差为,n d S 为其前n 项和，且满足2*21,n n a S n N -=∈，数列{}n b 满足：*211223,,1, 2.n n n b b b n N b b ++=+∈==（1）求n a ；（2）判断数列1{}n n b b ++是否是等比数列？证明你的结论； （3）求和1122231()()().n n n n T a b b a b b a b b +=++++++21．（本小题满分14分） 已知函数32()6(1)11(0).'(1)0.f x ax bx a x a f =+--->-=又 （1）用a 表示b ； （2）求()f x 的单调区间；（3）()f x 的图象上是否存在不同两点1122(,),(,)A x y B x y ，使()f x 有过点00(,())M x f x 的切线,//l l AB 且？其中1202x x x +=。
若存在，求出A ，B 的坐标；否则，说明理由。