辽宁省六校协作体2018-2019学年高二下学期期初考试英语试题+PDF版缺答案
2018——2019学年度下学期省六校协作体高二期初考试英语试题命题学校：凤城一中命题人：梁金权校对人：郑国艳负责人：关刚第一部分听力（共两节，满分30分）略第二部分阅读理解（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，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。
AWith so many NYC museums to choose from, it’s hard to begin. The good news is, you’re in the right place. Below is a highly selective list of museums in New York City.Metropolitan Museum of ArtOccupying two million square feet, with a permanent collection of over two million works of art, the Metropolitan Museum of Art (founded in 1870) is one the largest galleries in the world. This famous fine arts museum in NYC possesses works from classical antiquity (古物), ancient Egypt, Asia, Byzantium, and Europe, with nearly all of the European masters represented.American Museum of Natural HistoryOriginally founded in 1869, the American Museum of Natural History is one of the largest museums in the world. Located in park-like grounds across the street from Central Park, the museum complex consists of 28 interconnected buildings housing 45 permanent exhibition halls. As a popular family-friendly NYC attraction, the American Museum of Natural History is as fun as it is educational.Solomon R. Guggenheim MuseumOne of the mid-twentieth century’s most important architectural landmarks, the iconic Solomon R. Museum was designed by Frank Lloyd Wright. Wright spent 15 years designing the building and gave up 700 sketches and six sets of working drawings in the process. He died six months before the doors were opened.New York City Fire MuseumThe New York City Fire Museum (set up in 1934) is a charming alternative to the more expensive museums of New York. Here you will find art and artifacts that celebrate the history of firefighting and the New York City Fire Department, including modern-day firefighting equipment and real New York fire equipment from 1790.21. What do you know about the American Museum of Natural History?A. It consists of 28 exhibition halls.B. It lies in the middle of Central Park.C. It is fit for parents and their kids.D. It is the largest museum in the world.22. Which is the youngest museum?A. The New York City Fire MuseumB. The Solomon R. Guggenheim MuseumC. The Metropolitan Museum of ArtD. The American Museum of Natural History23. What is one feature of the New York City Fire Museum?A. It charges no feesB. It is the most famous museumC. It exhibits only modern equipmentD. It is a themed museum24. Where can you probably find this passage?A. In a guidebookB. In a history bookC. In an art reviewD. In an official reportBWill Smith is a superstar who was first seen as a rapper and then as one of Hollywood’s hottest guys on the block. He was born on September 25, 1968 in West Philadelphia, and was brought up in Germantown in northwest Philadelphia. His father always looked forward to developing discipline and good habits in his children. Occasionally, as a means of punishment, he also hit his children for misbehaving. Although Will found his father a bit too strict, he always owes his success to his father. He believes that his father’s disciplinary attitude helped him stay focused and enabled him to stay away from distractions.In Will’s family, almost everyone sang and played an instrument. Will learned to play the piano from his mother and learned drumming all by himself. Will received his first stereo system as a gift from his parents when he was ten. In his spare time, he listened to different types of music; this hobby of his was responsible for introducing him to one of the most popular rap numbers, “Rapper’s Delight” which further lead to Will’s love and interest in rapping.Will loved music, especially writing poetry. He used to visit the inner-city street corners to check out original rap artists. Although these places were perfect for developing his love for rap, they were dangerous and filled with drugs and violence. However, Will never involved himself in anything apart from rapping. His success in rapping became evident when his partner Jeff Townes received the first Grammy Award in the Rap category, in 1988.Like Will Smith, every successful man is shaped right from his childhood. To chase dreams, one should be disciplined, focused, and never say no to opportunities.25. What plays the most important role in Will Smith’s success in his own opinion?A. His mother’s supportB. His father’s strictnessC. His partner’s talentD. His friends’ encouragement26. What can we learn about Will’s family?A. It was a large and happy family.B. It had a lot of trouble to overcome.C. It valued hard work and great successD. It was filled with music-loving people27. What kind of person is Will Smith according to Paragraph 3?A. An honest personB. A smart personC. A determined personD. An adventurous personCThe analysis in a famous medical magazine The Lancet looks at obesity (肥胖) trends in over 200 countries. In the UK, one in every 10 young people aged 5 to 19, is fat. Obese children are likely to become obese adults, putting them at risk of serious health problems, say experts. Researchers believe the fact that the cheap, fattening food is available is one of the main drivers.Although child obesity rates appear to be stable in many rich European countries, including the UK, France and German, they are accelerating at an alarming speed in many other parts of the world. The largest increase in the number of obese children has been in East Asia. China and India have seen very fast rates in recent years.The researchers say that if current world trends continue, “obese” will soon be more common than “underweight”. “We have not become lazy. The reality is that the world around us is changing.”Dr. Fiona Bull from the World Health Organization suggested strict measures be taken to prevent “calorie-rich, nutrient-poor food” and encourage more physical activity. “But so far, only 20 countries around the world have introduced a tax on sugary drinks,” she said.Dr. Alison Tedstone, chief nutritionist at Public Health England, said, “Our sugar reduction program and the government’s sugar tax are world-leading, but this is just the beginning of a long trip to meet the challenge of a generation. The evidence is clear that just telling people what to do won’t work. While education and information are important, deeper actions are needed to help us lower calorie consumption and achieve healthier diets.”28. What mainly causes child obesity according to the researchers?A. Children don’t take enough physical exercise.B. Children are driven to consume cheap diets.C. Children become lazy and weak-willed.D. Children can reach cheap and fattening food more easily.29. How can we describe child obesity rate in France?A. AlarmingB. FastC. SlowD. Steady30. What may Dr. Fiona Bull think of the sugar tax?A. It is very effective.B. It needs to be improved furtherC. It is world-leading.D. It should be made to be tougher.31. What can be inferred from the last paragraph?A. England is the first country to tax sugary drinks.B. Education plays a small role in controlling child obesity.C. It is hard to solve the problem of child obesity.D. People should be told about the danger of overweight.DMore than 850,000 people were removed from China’s southeastern coastal areas on July 18 as Typhoon Haitang headed for them after causing damage to Taiwan. Special teams of power, transport, communications and water workers were on duty to maintain services in Fujian and Zhejiang provinces. The strong storm struck northern Taiwan on Monday afternoon, killed at least three, injured 58, and left a million homes without electricity.The number of people smoking in Scotland has fallen again, the Scottish Executive announced today. Health Minister Andy Kerr said that 39,000 people had given up in advance of the smoking ban, coming into effect in public places next year. Mr. Kerr said, “Each year 13,000 Scots still die as a result of smoking. It is very encouraging to see the number of Scots smoking becoming smaller year by year. We know that 70% of Scots who smoke want to give up. That is why we announced an additional ￡4 million earlier this year to support people who want to abandon the habit.”Scientists have cloned a dog for the first time, raising the possibility that pet owners will one day be able to reproduce a copy of their favorite animal. The Afghan dog named Snuppy has exactly the same ears as his “father”, which is not surprising, since it was an ear that provided the single skin cell from which he was made.32．The news is about .A．sports, law and violence B．sports, education and climateC．culture, science and health D．weather, health and science 33．From the news, we can learn that .A．Typhoon Haitang had first struck Fujian, and then it struck Taiwan.B．less people will smoke in Scotland next year.C．pet owners can reproduce a copy of their favorite animal now.D．Snuppy is not exactly like his “father”.34．Typhoon Haitang that struck northern Taiwan on Monday afternoon .A．made special workers repair the damageB．caused serious damage to Fujian and Zhejiang provincesC．caused at least three people to lose their lives and injured about 58D．left about a million people without homes.35．According to Andy Kerr, .A．about 13,000 people die of smoking every year in ScotlandB．about 39,000 people had given up smoking because of the banC．they announced ￡4 million this year to support people to give up smoking D．70% of Scots will have to give up smoking next year due to the new ban第二节（共5小题；每小题2分，满分10分）根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。
辽宁省六校协作体2018-2019学年高一下学期期中考试英语试卷word版(有配套答案)
2018-2019学年度下学期省六校协作体高一期中考试英语试题考试时间：100分钟分数：120分折合成150分第Ⅰ卷第二部分阅读理解（共两节，满分40分第一节（共15小题：每小题2分，满分30分）AHere are two letters from our readers expressing their concern about school assessment.Students should be allowed to study without worrying about grades . Fortunately, most educators realize that students have different interests and abilities. However, grade-based assessment is still very common. Grades often hold back creativity. Competing for better grades causes many students to turn down opportunities to go in for music, drama and sports. Grades are also an unfair measure of a student’s ability. I do not deman d, as some extremists do, that grades should no longer be recorded. However, I do believe that less importance should be placed on grades.I hope that someday grades will become optional at Village High School.Magdalena Smith,President Drama ClubLet’s face the facts about grades. Grades perform three basic functions. First, grades get students to work at their highest level of competence (能力). Second, they act as an encouragement for hard-working students and as a warming to those who are not. Finally, grades are an effective standard by which to measure students' achievement. Good grades help students to get jobs and to get into university.I've spoken with a number of students who have jobs, and most of them say that they were hired mainly because of their grades. My grades helped me get a part-time job and will help me into university next year. I think grades are extremely important at Village High School.Simon Harper,Member,21.Simon Harper writes from the viewpoint of someone who .A．insists grades should become optional in the near futureB．is concerned about improving students’ creativityC．supports using students’ interests to measure their abilitiesD．believes in the advantages of assessment based on grades22．Magdalena Smith thinks it is important for .A. educators to assess the students by gradesB. students to take part in music, drama, and sportsC. students to compete for better gradesD. educators to pay more attention to grades23．According to the letters, which of the following is true about Village High School? ______A. Grades are still in use at present..B. Grades hold back students’ cr eativity.C. Grades bring about unnecessary competition.D. Grades are effective in every way24．What are the two letters mainly about? ________A. The reasons why grades shouldn’t be used to assess students.B. The importance of art and music in students’ life.C. The need to have a standard measure for students’ success.D. The role that grades should play in assessing students.BOn the first day of school our professor introduced himself and challenged us to get to know someone we didn’t know. I stood up to look around when a gentle hand touched my shoulder. I turned around to find a wrinkled, little old lady staring at me with a smile that lit up her entire being.She said, “Hi, girl! My name is Rose. I’m 87 years old. Can I give you a hug？”I laughed and enthusiastically responded, “Of course you may!”and she gave me a giant hug. “Why are you in college at such a young, innocent age？” I asked.She jokingly replied, “I’m here to meet a rich husband, get married, have a couple of children, and then retire and travel!”I grinned(露齿而笑)，“I mean, seriously, why?”I said. I was curious what may have motivated her to take on this challenge at her age.“I always dreamed of having a college education and now I’m getting one!” she told me.Over the course of the year, Rose became a campus symbol and she easily made friends wherever she went. She loved to dress up and enjoyed the attention she received from the other students. She was living it up.At the end of the semester we invited Rose to speak at our football dinner party. I’ll never forget what she taught us.“We do not stop playing because we are old; we grow old because we stop playing. There is only one secret to staying young, being happy, and achieving success. You’ve got to have a dream. Whenyou lose your dreams, you die!” she said.“There is a huge difference between growing older and growing up. If you are nineteen years old and lie in bed for one full year and don’t do one productive thing, you will turn 20 years old. If I am 87 years old, and stay in bed for a year, and never do anything, I will turn 88. Anybody can grow older. But every minute counts for young men,”she added.“The idea is to grow up by always finding the opportunity for change. Have no regrets. The elderly usually don’t have regrets for what we did, but rather for things we did not do. The only people who fear death are those with regrets.”She concluded her speech by courageously singing“The Song of Rose”. She challenged each of us to study the lyrics and live them out in our daily lives.At the year’s end, Rose finished the college degree she had begun all those years ago. One week after graduation Rose died peacefully in her sleep.25. What can we know about Rose from the passage?A. serious and hard-workingB. honest and optimisticC. humorous and popularD. crazy and brave26. what motivated Rose to go to college at the age of 87?A. That she wanted to realize her dream.B. That she wanted to meet a rich husband.C. That she loved to stay with the young.D. That she planned to grow up27. According to her speech, ____.A. whenever you have a dream, you’ll succeedB. all people don’t grow up while growing olderC. Rose usually regretted having done somethingD. time isn’t important especially for the elderly people.28. What is the purpose of the passage ?A. to encourage us to live with our dreamB. to tell us it is never too late to learnC. to advise us to be happy every dayD. to recommend us to find secrets of staying youngCWhen I came to China a little over two years ago, at the height of Shanghai’s summer season, I was spending summer in ways I never had before —indoors, absolutely 100% indoors. I had, of course, discovered something called Ele.me as well as Taobao and AliPay. It was like a dream cometrue, and I spent a week like that before going outside.Once outside, I realized how simple life could be —with some of my indoor habits. Namely, I didn’t need cash. Gone was the trouble of having to find and carry change. All it took was a quick scan of a QR code and money-switched hands. However, as I grew more and more comfortable with this lifestyle, I came to realize how much more isolated I was from my fellow human beings. Instead of the few extra seconds of human interaction you get when a cashier counts out your change, you get a machine that beeps and tells you your transaction(交易) has gone through.Furthermore, I realized that an entire generation was left behind. Most people my grandparents’age don’t know how to use a smartphone, let alone mobile payment. How upset they must feel when they are turned away from a shop that only accepts Alipay and WeChat Pay!Despite these weaknesses, mobile payment has indeed made our lives vastly easier. The youth are accepting it. However, with money easily moving around with the touch of a button, we are slowly gaining a wrong impression of its value. One can often hear stories of how a child might rack up (累积) huge bills on their parents’credit cards by buying items while playing a game on an iPad or iPhone. We may feel the same way when walking past a shop on the way home —a few yuan spent there can’t hurt, right? Compare that feeling to handing over paper money, and you might realize how much easier it is to let go of money when you aren’t actually holding it.Mobile payment is an important aspect of our generation. However, we must acknowledge the problems that come with it. In the end, we must come to define it rather than let it define us.29.According to the author, in summer, life outside can be much simpler with the help of ____.A. air-conditioningB. Ele.me and TaobaoC. mobile paymentD. QR codes30.According to the author, what problems may come with mobile payment?① A lack of human interaction.②Increasing risks of theft.③ A wider generation gap.④Wrong impressions of money value.A. ①②③B. ①②④C. ①③④D. ②③④31. Which of the following statements is NOT true?A. The author had never tried mobile payment before moving to China.B. Mobile payment requires a scan of a QR code.C. In some shops in China, customers can now pay using only mobile payment.D. The author thinks we should stop mobile payment from developing further.DAlways Remember Your “Initial（最初的）Wishes”The primary message coming out of the recently completed 19th National Congress of the CPC(中国共产党十九大) in Beijing consists of two parts. The first is that the party is entering a “new age” and the second is the need to focus on the “initial wishes” that established the CPC’s beginning. In other words, although life today is much more different than that in the past, people should not forget the “goals” of the past.The pioneers who founded the CPC almost one hundred years ago were living in difficult and dangerous times. But all of them were committed to making life better for their countrymen. Their goals were to make China more egalitarian (人人平等的), peaceful and prosperous. Most of those goals have been achieved, but according to President Xi, there is still work to be done and people should be guided by the “initial wishes” of the founders.T he idea of “initial wishes” can also be useful in your personal life. Young people are always encouraged to set goals for the future. But life is not simple; it’s full of complexities, struggle s and frustrations, and it may leave you wondering what your “initial wishes” are and why they are so important.Take for example a young person who wants to become a doctor and help cure sick people. After many years of study and several years of practice, he finds that he is working long hours for little money. Worse still, many patients don’t appreciate his effort s; they only criticize and complain. We have even seen incidents of doctors being physically attacked by their patients. It’s easy then for that young doctor to become pessimistic and lose his goal.But the ones who are persistent are the ones who change the world and they are the ones who understand that true happiness in life comes from being selfless, not selfish. That young doctor, for example, will remain true to his goal by remembering the “initial wishes” of why he became a doctor — to help people.I hope that you, too, can hold firm to your “initial wishes” — no matter where you go and what you do.32.Which has the similar meaning to the underlined phrase in the paragraph two?A. were addicted toB. were devoted toC. were accustomed toD. were used to33.According to the article, what are the CPC’s “initial wishes”?A. To help China enter a new era.B. To help its countrymen achieve their goals.C. To make China more egalitarian, peaceful and prosperous.D. To end the difficult and dangerous times its founders were living in.34. According to the author, it could be difficult for one to accomplish his “initial wishes” because____.A. some “initial wishes” are unrealisticB. life is full of difficulties and strugglesC. there are too many pessimistic peopleD. many people do things just to help themselves35.What does the author mainly want to prove by mentioning the young doctor in the article?A. The bitter life of young doctors.B. The real sources of happiness in life.C. The diff iculties of holding firm to one’s “initial wishes.”D. The importance of “initial wishes.”第二节（共5小题：每小题2分，满分10分）根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。
辽宁省六校协作体2018-2019学年高一下学期期初考试英语试题
2018-2019学年度下学期省六校协作体高一期初考试英语试题第Ⅰ卷第一部分听力（共两节，满分30分）略第二部分阅读理解（共两节，满分35分）第一节（共10小题：每小题2.5分，满分25分）阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。
AJohn，a very thin boy, loved football with all his heart when he was very young．Practice after practice，he eagerly gave everything he had．But being half the size of the other boys，he could only sit on the bench and hardly ever played in games．Even though the son was always on the bench，his father was always standing with cheers and encouraging him．When John went to college，he decided to try out for the football team as a “walk-on”．Everyone was sure he could never make the cut，but he did．The coach thought he could provide the other members with the spirit they needed．The news that he had survived the cut excited him so much that he rushed to the nearest phone and called his father．His father shared his excitement and was sent season tickets for all the college games．It was the end of this last football season．One day John received a telegram and asked one week off．Nobody knew what happened except the coach．The coach said，“Don't plan to come back to the game on Saturday．”Saturday arrived，and the game was not going well：When the team was ten points behind，John came back．“Coach，please let me play．I’ve just got to play today,”said John．The coach pretended not to hear him．But John persisted，and finally feeling sorry for the kid，the coach gave in．Before long everyone could not believe their eyes. John was doing everything to fight. The opposing team could not stop him. He ran, he passed and blocked like astar. And at last his team won the game．After the game，John looked at the coach，with tears in his eyes，and said，“Well,you knew my dad died,but did you know that my dad was blind?''John swallowed hard and forced a smile, “Dad came to all my games, but today was the first time he could see me play, and I wanted to show him that I could do it.”21.Why did John hardly have any chance to play in games?A．Because he had no time to practice．B．Because he was too young to play games．C．Because everyone looked down upon him．D．Because his body condition was not good．22.The underlined phrase “make the cut” in the second paragraph can be replacedby ““A．make progress B．be allowed to join the teamC．cut himself D．be refused by the coach23.From the text we can know that ．A．John felt very depressed as a “walk-on”B．John's father always taught him how to playC．John's father went to most of his college gamesD．the coach was sure John would be the best player one day24.This story tells us thatA. a burden of one’s choice is not felt B．better to do well than to say well C．all roads lead to Rome D．where there is a will，there is a wayBThere was a time in the 1960’s and 1970’s when some people believed that coffee would replace tea as Britain’s favourite drink, but that did not happen, and today, tea remains Britain’s favourite drink.To say that the British are fond of tea is something of an understatement. From the Royal(皇室的) Family down to the homeless and the out-of-work, tea is more than just a pleasure. It is an important part of life!The popularity of tea in the United Kingdom has a long history. It was in 1657 that Thomas Garway, the owner of a coffee house, sold the first tea in London. The drink soon became popular as another choice besides coffee.In those days, however, tea was not something for anyone. For a century and a half, it remained an expensive drink. Many bosses served a cup of it to their workers in the middle of the morning, thus inventing a lasting British tradition, the “tea break”. But as a social drink outsi de the workplace, tea was served for the nobility(贵族) and for the growing middle classes. Among those who had the money for tea, it became very popular as a drink to be enjoyed in cafés and “tea gardens”. It was the 7th Duchess of Bedford who, in around 1800, started the popular “afternoon tea”, which took place at about four o’clock. At about the same time, the Earl of Sandwich popularized a new way of eating bread with something (e. g. jam) between them, and before long, a small meal at the end of the afternoon with tea and sandwiches had become part of a way of life.As tea became much cheaper during the nineteenth century, its popularity spread right through British society. In working-class households, it was served with the main meal of the day, eaten when workers r eturned home after a day’s l abour. This meal has become known as “high tea”.Today, tea can be drunk at any time of day. Most people in Britain drink tea for breakfast. The mid-morning “tea break”is an institution in British office s and factories. Late r in the day, “afternoon tea” is still a way of life in the south of England and among the middle classes, while “high tea”has remained a tradition in the north of Britain.25.Who played an important part in the beginning of tea time in England?A.Thomas Garway.B.The Royal Family.C.The Earl of Sandwich.D.The Duchess of Bedford.26.What can we learn from the passage?A. The “tea break” kept the workers from being sleepy after lunch.B. Workers could enjoy a cup o f tea in “tea gardens”at their workplace.C. “High tea”was usually served with the main meal for the middle classes.D. The “afternoon tea” together with sandwiches became popular in around 1800.27.What is the best title of the passage?A.The Popularity of TeaB.Tea and the BritishC.Tea and the Middle ClassD.The History of TeaCWhen the telephone rings late at night, most women guess it must be one of only four or five people calling. A sister? Maybe. An emergency? Possibly.A mother? Probably not at that time of night. Much more probably it is a close female friend calling to tell you that she has split up with her boyfriend again or perhaps simply that a good movie has just started on TV.At a time when families are spread far and wide and marriages often end in divorce, friendships are becoming more and more important. Erika, a 32-year-old lawyer, is strengthened by her ten-year friendship with her married friend Jane. “I was very sick one night, so I called Jane at about 3:00 a.m. to talk about it,” she says. “She was very supportive and even came over to take me to the doctor’s the next morning.”As American TV shows like Friends, which follows the lives of a very close group of young friends, have become more popular, many of us are beginning to see the value of such friendships. TV shows like this tell us that our romantic relationships may not last, but we need to keep in touch with our close friends if we want to survive.A TV show called Real Women is about the lives and relationships of five former school friends. In this show, family, husbands, and work are all less important than friendships. One of its actresses says the show reflects her own experience. “Friendship is about commitment. I don’t see some of my friends for ages but when we get together, it is as if time hasn”t passed.”This is true of Erika and Jane’s friendship. With Erika’s family 200 miles away, it is Jane who keeps a spare set of keys to Erika’s apartment and waters her plants whenever she is away. “Having Jane around gives me a certain amount of freedom. It is not the kind of thing that you could ask anyone to do, but she knows I would do the same for her.” Erika feels that because she no longer sees her family every day,she now enjoys a closer relationship with her best friend. Jane, who may move to a different city soon, is worried about leaving such a support system of friends. “My friends have more to do with my life than my parents and, therefore, I don’t have to spend a lot of time explaining things to them. Friends are more up to date with what is happening.”28.According to the passage, a late-night phone call for most women is probablyfrom ______.A. a friendB. a relativeC. a strangerD. a doctor shows like Friends tell us that ______.A. marriages with friends often end up in failureB. families and work are as important as friendsC. close friends help us face problems in lifeD. friendship fades(消退) as time goes by30.Which of the statements will the author probably agree with?A. A near friend is more helpful than a faraway relative.B. Both marriage and friendship demand commitment.C. However far away we’re, parents worry about us.D. Long distance makes the hearts closer.第二节（共5小题：每小题2分，满分10分）根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。
辽宁省抚顺市省重点高中协作校2018-2019学年高二英语下学期期末考试试题(含解析).doc
辽宁省抚顺市省重点高中协作校2018-2019学年高二英语下学期期末考试试题（含解析）考试时间:120 分钟试卷满分:150 分第 1 部分听力(共两节，满分 30 分) 第一节(共 5 小题；每小题 1.5 分，满分 7.5 分) 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，并标在试卷的相应位置。
1.At what time will the school play start?A. 6:45.B. 7:00.C. 7:15.【答案】B【解析】【详解】此题为听力题，解析略。
2.What part of the women’s body was broken?A. Her arms.B. Her neck.C. Her leg.【答案】C【解析】【分析】此题为听力题，解析略。
【详解】此题为听力题，解析略。
3.What are the speakers mainly talking about?A. The man’s dog.B. The man’s house.C. The man’s roommate.【答案】B【解析】【分析】此题为听力题，解析略。
【详解】此题为听力题，解析略。
4.What is the women’s dancing teacher doing tonight?A. She is seeing a doctor.B. She is taking a flight.C. She is attending a meeting.【答案】B【解析】【分析】此题为听力题，解析略。
【详解】此题为听力题，解析略。
第二节(共 15 小题；每小题 1.5 分，满分 22.5 分)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，并标在试卷的相应位置。
听下面一段较长对话，回答以下小题。
5. Where is the new café?A. Next to the library.B. Near the bus station.C. Beside the park.6. How will the speakers go?A. By bus.B. By bike.C. On foot.【答案】5. A 6. C【解析】此题为听力题，解析略。
辽宁省六校协作体2018-2019学年高二上学期期初考试英语试题含解析
2018-2019学年度上学期省六校协作体高二期初考试英语试题第Ⅰ卷第一部分听力（共两节，满分30分）略第二部分阅读理解（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，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。
AWhat makes a building ugly? Everyone's got their own opinion, so it’s hard to say. Now, let’s take a look at some of the world’s worst buildings.The Torre VelascaThe Tone Velasca in Milan is in the centre of Milan (Italy). The tower, which went up in the 1950s, is about 100 metres tall. Its design is actually a modern representation of a traditional Lombard castle, where the lower parts were narrower(狭窄的) than the upper parts.The Mirador BuildingThe Mirador Building in Madrid (Spain) was created by Dutch studio MVRDV and the Spanish architect Blanca Lleo. The building, which is a block of flats, opened in 2005. There is a large rectangular(矩形的) hole in the upper part of it, which is used by the neighbourhood as a meeting area and playground.The Prague TV TowerThe Prague TV Tower is in Prague (the capital of the Czech Republic). It stands 216 metres high and looks a bit like a tall, thin space ship. Prague is famous for its architectural beauty, so when the tower was put up in 1985 by architect Vaclav Aulicky and engineer Jiri Koza k, many felt it didn’t fit in.The Longaberger Basket CompanyThe Longaberger Basket Company building is in Newark, Ohio (USA). The office blockwas opened in 1997 and looks like a very large basket. It’s got seven floors and two handles at the top. The handles weigh about 150 tons. It may not be the ugliest building in the world but it’s certainly one of the most unusual.1. According to the text, the Torre Velasca _________.A. is similar to a Lombard castleB. was created by Blanca LleoC. has a history of over 100 yearsD. is taller than the Prague TV Tower2. Which of the following buildings might be the Mirador Building?A. B.C. D.3. When the Prague TV tower was put up, many people ________.A. liked it very muchB. thought little of itC. felt that it might fall down easilyD. thought that it was totally useless【答案】1. A 2. C 3. B【解析】本文是一篇说明文。
辽宁省六校协作体2018-2019学年高一下学期期中考试英语试卷word版(有答案)
2018-2019学年度下学期省六校协作体高一期中考试英语试题考试时间：100分钟分数：120分折合成150分第Ⅰ卷第二部分阅读理解（共两节，满分40分第一节（共15小题：每小题2分，满分30分）AHere are two letters from our readers expressing their concern about school assessment.Students should be allowed to study without worrying about grades . Fortunately, most educators realize that students have different interests and abilities. However, grade-based assessment is still very common. Grades often hold back creativity. Competing for better grades causes many students to turn down opportunities to go in for music, drama and sports. Grades are also an unfair measure of a student’s ability. I do not deman d, as some extremists do, that grades should no longer be recorded. However, I do believe that less importance should be placed on grades.I hope that someday grades will become optional at Village High School.Magdalena Smith,President Drama ClubLet’s face the facts about grades. Grades perform three basic functions. First, grades get students to work at their highest level of competence (能力). Second, they act as an encouragement for hard-working students and as a warming to those who are not. Finally, grades are an effective standard by which to measure students' achievement. Good grades help students to get jobs and to get into university.I've spoken with a number of students who have jobs, and most of them say that they were hired mainly because of their grades. My grades helped me get a part-time job and will help me into university next year. I think grades are extremely important at Village High School.Simon Harper,Member,21.Simon Harper writes from the viewpoint of someone who .A．insists grades should become optional in the near futureB．is concerned about improving students’ creativityC．supports using students’ interests to measure their abilitiesD．believes in the advantages of assessment based on grades22．Magdalena Smith thinks it is important for .A. educators to assess the students by gradesB. students to take part in music, drama, and sportsC. students to compete for better gradesD. educators to pay more attention to grades23．According to the letters, which of the following is true about Village High School? ______A. Grades are still in use at present..B. Grades hold back students’ cr eativity.C. Grades bring about unnecessary competition.D. Grades are effective in every way24．What are the two letters mainly about? ________A. The reasons why grades shouldn’t be used to assess students.B. The importance of art and music in students’ life.C. The need to have a standard measure for students’ success.D. The role that grades should play in assessing students.BOn the first day of school our professor introduced himself and challenged us to get to know someone we didn’t know. I stood up to look around when a gentle hand touched my shoulder. I turned around to find a wrinkled, little old lady staring at me with a smile that lit up her entire being.She said, “Hi, girl! My name is Rose. I’m 87 years old. Can I give you a hug？”I laughed and enthusiastically responded, “Of course you may!”and she gave me a giant hug. “Why are you in college at such a young, innocent age？” I asked.She jokingly replied, “I’m here to meet a rich husband, get married, have a couple of children, and then retire and travel!”I grinned(露齿而笑)，“I mean, seriously, why?”I said. I was curious what may have motivated her to take on this challenge at her age.“I always dreamed of having a college education and now I’m getting one!” she told me.Over the course of the year, Rose became a campus symbol and she easily made friends wherever she went. She loved to dress up and enjoyed the attention she received from the other students. She was living it up.At the end of the semester we invited Rose to speak at our football dinner party. I’ll never forget what she taught us.“We do not stop playing because we are old; we grow old because we stop playing. There is only one secret to staying young, being happy, and achieving success. You’ve got to have a dream. Whenyou lose your dreams, you die!” she said.“There is a huge difference between growing older and growing up. If you are nineteen years old and lie in bed for one full year and don’t do one productive thing, you will turn 20 years old. If I am 87 years old, and stay in bed for a year, and never do anything, I will turn 88. Anybody can grow older. But every minute counts for young men,”she added.“The idea is to grow up by always finding the opportunity for change. Have no regrets. The elderly usually don’t have regrets for what we did, but rather for things we did not do. The only people who fear death are those with regrets.”She concluded her speech by courageously singing“The Song of Rose”. She challenged each of us to study the lyrics and live them out in our daily lives.At the year’s end, Rose finished the college degree she had begun all those years ago. One week after graduation Rose died peacefully in her sleep.25. What can we know about Rose from the passage?A. serious and hard-workingB. honest and optimisticC. humorous and popularD. crazy and brave26. what motivated Rose to go to college at the age of 87?A. That she wanted to realize her dream.B. That she wanted to meet a rich husband.C. That she loved to stay with the young.D. That she planned to grow up27. According to her speech, ____.A. whenever you have a dream, you’ll succeedB. all people don’t grow up while growing olderC. Rose usually regretted having done somethingD. time isn’t important especially for the elderly people.28. What is the purpose of the passage ?A. to encourage us to live with our dreamB. to tell us it is never too late to learnC. to advise us to be happy every dayD. to recommend us to find secrets of staying youngCWhen I came to China a little over two years ago, at the height of Shanghai’s summer season, I was spending summer in ways I never had before —indoors, absolutely 100% indoors. I had, of course, discovered something called Ele.me as well as Taobao and AliPay. It was like a dream cometrue, and I spent a week like that before going outside.Once outside, I realized how simple life could be —with some of my indoor habits. Namely, I didn’t need cash. Gone was the trouble of having to find and carry change. All it took was a quick scan of a QR code and money-switched hands. However, as I grew more and more comfortable with this lifestyle, I came to realize how much more isolated I was from my fellow human beings. Instead of the few extra seconds of human interaction you get when a cashier counts out your change, you get a machine that beeps and tells you your transaction(交易) has gone through.Furthermore, I realized that an entire generation was left behind. Most people my grandparents’age don’t know how to use a smartphone, let alone mobile payment. How upset they must feel when they are turned away from a shop that only accepts Alipay and WeChat Pay!Despite these weaknesses, mobile payment has indeed made our lives vastly easier. The youth are accepting it. However, with money easily moving around with the touch of a button, we are slowly gaining a wrong impression of its value. One can often hear stories of how a child might rack up (累积) huge bills on their parents’credit cards by buying items while playing a game on an iPad or iPhone. We may feel the same way when walking past a shop on the way home —a few yuan spent there can’t hurt, right? Compare that feeling to handing over paper money, and you might realize how much easier it is to let go of money when you aren’t actually holding it.Mobile payment is an important aspect of our generation. However, we must acknowledge the problems that come with it. In the end, we must come to define it rather than let it define us.29.According to the author, in summer, life outside can be much simpler with the help of ____.A. air-conditioningB. Ele.me and TaobaoC. mobile paymentD. QR codes30.According to the author, what problems may come with mobile payment?① A lack of human interaction.②Increasing risks of theft.③ A wider generation gap.④Wrong impressions of money value.A. ①②③B. ①②④C. ①③④D. ②③④31. Which of the following statements is NOT true?A. The author had never tried mobile payment before moving to China.B. Mobile payment requires a scan of a QR code.C. In some shops in China, customers can now pay using only mobile payment.D. The author thinks we should stop mobile payment from developing further.DAlways Remember Your “Initial（最初的）Wishes”The primary message coming out of the recently completed 19th National Congress of the CPC(中国共产党十九大) in Beijing consists of two parts. The first is that the party is entering a “new age” and the second is the need to focus on the “initial wishes” that established the CPC’s beginning. In other words, although life today is much more different than that in the past, people should not forget the “goals” of the past.The pioneers who founded the CPC almost one hundred years ago were living in difficult and dangerous times. But all of them were committed to making life better for their countrymen. Their goals were to make China more egalitarian (人人平等的), peaceful and prosperous. Most of those goals have been achieved, but according to President Xi, there is still work to be done and people should be guided by the “initial wishes” of the founders.T he idea of “initial wishes” can also be useful in your personal life. Young people are always encouraged to set goals for the future. But life is not simple; it’s full of complexities, struggle s and frustrations, and it may leave you wondering what your “initial wishes” are and why they are so important.Take for example a young person who wants to become a doctor and help cure sick people. After many years of study and several years of practice, he finds that he is working long hours for little money. Worse still, many patients don’t appreciate his efforts; they only criticize and complain. We have even seen incidents of doctors being physically attacked by their patients. It’s easy then for that young doctor to become pessimistic and lose his goal.But the ones who are persistent are the ones who change the world and they are the ones who understand that true happiness in life comes from being selfless, not selfish. That young doctor, for example, will remain true to his goal by remembering the “initial wishes” of why he became a doctor — to help people.I hope that you, too, can hold firm to your “initial wishes” — no matter where you go and what you do.32.Which has the similar meaning to the underlined phrase in the paragraph two?A. were addicted toB. were devoted toC. were accustomed toD. were used to33.According to the article, what are th e CPC’s “initial wishes”?A. To help China enter a new era.B. To help its countrymen achieve their goals.C. To make China more egalitarian, peaceful and prosperous.D. To end the difficult and dangerous times its founders were living in.34. According to the author, it could be difficult for one to accomplish his “initial wishes” because____.A. some “initial wishes” are unrealisticB. life is full of difficulties and strugglesC. there are too many pessimistic peopleD. many people do things just to help themselves35.What does the author mainly want to prove by mentioning the young doctor in the article?A. The bitter life of young doctors.B. The real sources of happiness in life.C. The difficulties of holding firm to one’s “initial wishes.”D. The importance of “initial wishes.”第二节（共5小题：每小题2分，满分10分）根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。
辽宁省六校协作体2018_2019学年高二英语上学期期初考试试题
2018-2019学年度上学期省六校协作体高二期初考试英语试题第Ⅰ卷第一部分听力（共两节，满分30分）略第二部分阅读理解（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，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。
AWhat makes a building ugly? Everyone's got their own opinion, so it’s hard to say. Now, let’s take a look at some of the world’s worst buildings.The Torre VelascaThe Tone Velasca in Milan is in the centre of Milan (Italy). The tower, which went up in the 1950s, is about 100 metres tall. Its design is actually a modern representation of a traditional Lombard castle, where the lower parts were narrower (狭窄的）than the upper parts.The Mirador BuildingThe Mirador Building in Madrid (Spain) was created by Dutch studio MVRDV and the Spanish architect Blanca Lleo. The building, which is a block of flats, opened in 2005. There is a large rectangular (矩形的）hole in the upper part of it, which is used by the neighbourhood as a meeting area and playground.The Prague TV TowerThe Prague TV Tower is in Prague (the capital of the Czech Republic). It stands 216 metres high and looks a bit like a tall, thin space ship. Prague is famous for its architectural beauty,so when the tower was put up in 1985 by architect Vaclav Aulicky and engineer Jiri Kozak, many felt it didn’t fit in.The Longaberger Basket CompanyThe Longaberger Basket Company building is in Newark, Ohio (USA). The office block was opened in 1997 and looks like a very large basket. It，s got seven floors and two handles at the top. The handles weigh about 150 tons. It may not be the ugliest building in the world but it’s certainly one of the most unusual.21. According to the text, the Torre Velasca _________ .A. is similar to a Lombard castleB. was created by Blanca LleoC. has a history of over 100 yearsD. is taller than the Prague TV Tower22. Which of the following buildings might be the Mirador Building?A. B.C D23. When the Prague TV tower was put up, many people___ .A.liked it very muchB. thought little of itC. felt that it might fall down easilyD. thought that it was totally uselessBEmma and Ryan, a married couple, were driving to a friend’s house when Emma turnedto Ryan and asked, “Would you like to stop for lunch?”Ryan replied. “No,I’m not hungry yet,” and continued driving. Meanwhile, Emma sat quietly fuming (十分恼火)in the passenger seat. Ryan could not understand why Emma was unhappy. He had thought she was asking if he was hungry, but in reality, Emma was telling him that she was hungry and wanted to stop for lunch.Misunderstandings like this often occur between men and women, even among people from the same culture. Deborah Tannen, professor of linguistics at Georgetown University in the United States, has studied conversational rules.In Emma and Ryan’s situation, Emma was making a request in the form of a question. Her style of talking is common for women. She needed Ryan to agree they were both hungry. So, Emma asked Ryan what he wanted. She was really telling Ryan what she wanted; however, Ryan did not understand this. If he had been hungry, he would have said something more direct, such as, “I’m hungry. Let’s have lunch.”Tannen believes that most women grow up in a world where talk is used to express feelings. However, most men are raised differently and they tend to keep their feelings to themselves.Tannen says, for men, talk is often used as a situation used outside the home to gain respect, to entertain and get attention , or to exchange information. This is why men communicate by making each other laugh, or talking about sport and work. These men do not always feel it is necessary to talk to feel close or to express their feelings. Women, on the other hand, are encouraged to speak about their feelings since this is a way to build relationships.24. What can be inferred from Emma and Ryan’s story?A. Emma didn’t like Ryan.B. Ryan didn’t want to talk to Emma.C. Ryan didn’t want to eat with Emma.D. Emma wasn’t pleased with Ryan’s answer.25. According to Deborah Tannen, what causes the misunderstanding?A.Different culturesB. Different characteristicsC. Different ways of communicatingD.Different educational background26. Compared with women, men_______.A. talk less about feelingsB. communicate more with othersC. are more likely to become angryD.are better at building relationships27. What might be the best title for the text?A. Why women like to express feelingsB. How men and women communicateC. Different ways of supporting a childD. Misunderstandings in social communicationCRed meat, usually considered to be beef, pork, mutton and lamb products, have nutritional value, but eating red meat also raises some health concerns.Red meat is an excellent source of protein(蛋白质). It is also a key source of vitamin B12, which is only available in animal products and is key for both red blood cell and nerve health. Red meat is also a rich source of zine, selenium(硒) andiron. Zinc and selenium are good for our immune system (免疫系统). Iron helps transport oxygen in the blood, and low levels of iron can lead to feeling tired. Eating red meat, especially lean cuts(廋肉), with meals and snacks, may help people curb hunger between meals and help people with weight management.Health risks of red meat may include the risk of heart disease and cancer. It is usually best to avoid processed meats. These tend to contain lots of salt and nitrites(亚硝酸盐), which may damage our health. Choosi ng lean cuts and cooking meat correctly may reduce health risks. It is generally advised not to undercook or overcook red meat and to avoid grilling(烧烤).When it comes to red meat and health, another thing is whether the animals are grain or grass-fed. Grass-fed animals frequently have a better quality of life. Grass feeding can be more environmentally friendly as well.Many governments suggest the amount of red meat should be safely included in a healthy diet. The amount varies between nations, but several portions a week are usually acceptable. Those who choose to include eating red meat may wish to choose grass-fed animals and to cut off any fat before eating.28. According to Paragraph 2, red meat _____.A.is quite expensiveB. a major source of various vitaminsC.can provide important nutrition for usD.contains protein that can’t be found in plants29. What does the underlined word “curb”in paragraph2 probably mean?A. experienceB. developC. controlD. realize30. What suggestion does the author give us on eating red meat?A. We should eat it anyway we like.B. We should cut it out from our diet.C. We should cook it as long as possible.D. We should pay attention to its quality and amount.31.What may be the best title for the text?A. Red meat and healthB. Diseases related to red meatC. Unhealthy diet of meat loversD. Methods of cooking red meatDScientists in Argentina have created the world’s first cow with two human genes that will enable it to produce human-like milk.Genetic engineering was used to introduce the "mothers’ milk" genes into the animal before birth, according to the National Institute of Agribusiness Technology in Buenos Aires.As an adult, the cloned cow "will produce milk that is similar to that of humans", which will prove "a deve lopment of great importance for the nutrition of infants(婴儿)", said the institute. "The cloned cow, named Rosita ISA, is the first in the worldwith two human genes that contain the proteins present in human milk," said the statement.In April, scientists in China published details of research showing that they had created dairy cows which produced milk containing proteins found in human breast milk. But the Argentine team said the Chinese only introduced one human gene, while their research involved two, meaning the milk will more closely resemble that of humans.“Our goal was to raise the nutrition value of cows’ milk by adding two human genes, which do good to the immune system of infants,” said Adrian Mutto, from the National University of San Martin which worked with the institute.Cristina Kirchner, President of Argentina, said that the scientific institute made all Argentines proud. She also said that she had refused the "honor" of having the cow named after her. "They came to tell me that the name is Cristina, but what woman would like to have a cow named after her? It appeared to me to be more proper to call it Rosita.”32. What is the passage mainly about?A. The importance of genetic engineering.B. Ways to improve mothers’ milk.C. Advanced agricultural technology in Argentina.D. A cloned cow to produce human-like milk.33. Which of the following can best replace “more closely resemble” in Para 4?A. have more varieties thanB. have more nutrition thanC. be more similar toD. be more different from34. What can be inferred from Cristina Kirchner’s statements?A. She was quite satisfied with the research done by the institute.B. She considered it an honor to name the special cow.C. She felt it improper to be named after the cow.D. She refused to give a name to the cow out of self-respect.35. What’s Adrian Mutto’s attitude to the genetic engineering?A.negativeB. supportiveC.indifferentD.mixed第二节（共5小题：每小题2分，满分10分）根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。
D_辽宁省六校协作体2018-2019学年高二下学期期初考试数学(理)试题(解析版)
辽宁省六校协作体2018-2019学年高二下学期期初考试数学（理）试题（解析版）一、选择题（本大题共12小题，共60.0分）1.设集合，，则 A ={x||x|<1}B ={x|x(x ‒3)<0}A ∪B =()A. B. C. D. (‒1,0)(0,1)(‒1,3)(1,3)【答案】C【解析】解：集合，A ={x||x|<1}={x|‒1<x <1}，B ={x|x(x ‒3)<0}={x|0<x <3}则．A ∪B ={x|‒1<x <3}=(‒1,3)故选：C ．解不等式得出集合A 、B ，根据并集的定义写出．A ∪B 本题考查了不等式的解法与集合的运算问题，是基础题．2.已知命题p ：，，则为 ∀x ∈R x 2‒2x +4≤0¬p ()A. ， B. ∀x ∈R x 2‒2x +4≥0∃x 0∈R,x 20‒2x 0+4>0C. ， D. ∀x ∉R x 2‒2x +4≤0∃x 0∉R,x 20‒2x 0+4>0【答案】B【解析】解：因为全称命题的否定是特称命题，所以，命题p ：，，则为：∀x ∈R x 2‒2x +4≤0¬p ．∃x 0∈R,x 20‒2x 0+4>0故选：B ．利用全称命题的否定是特称命题写出结果即可．本题考查命题的否定，特称命题与全称命题的否定关系，是基础题．3.已知等差数列的前n 项和为，若，则 {a n }S n a 2+a 6=14S 7=()A. 13B. 35C. 49D. 63【答案】C【解析】解：等差数列的前n 项和为，，∵{a n }S n a 2+a 6=14．∴S 7=72(a 1+a 7)=72(a 2+a 6)=72×14=49故选：C ．由等差数列性质得：，由此能求出结果．S 7=72(a 1+a 7)=72(a 2+a 6)本题考查等差数列的前7项和的求法，考查等差数列的性质等基础知识，考查运算求解能力，考查化归与转化思想，是基础题．4.已知为锐角，且，则的值是 αtan(π‒α)+3=0sinα()A.B.C.D.1331010377355【答案】B【解析】解：为锐角，且，即，∵αtan(π‒α)+3=‒tanα+3=0tanα=3，∴cosα=11+tan 2α=1010则．sinα=1‒cos 2α=31010故选：B ．已知等式利用诱导公式变形，求出的值，根据为锐角，求出的值，即可求出的值．tanααcosαsinα此题考查了同角三角函数基本关系的运用，熟练掌握基本关系是解本题的关键．5.已知向量，满足，，，则 ⃗a ⃗b |⃗a|=1|⃗a‒⃗b|=3⃗a⋅(⃗a‒⃗b)=0|⃗b ‒2⃗a |=()A. 2B. C. 4D. 2343【答案】A 【解析】解：，，可得|⃗a|=1|⃗a‒⃗b|=3⃗a2‒2⃗a ⋅⃗b+⃗b2=3，可得，⃗a⋅(⃗a‒⃗b)=0⃗a 2‒⃗a ⋅⃗b=0解得，．⃗a ⋅⃗b=1⃗b2=4则．|⃗b‒2⃗a|=⃗b2‒4⃗a ⋅⃗b+4⃗a2=4‒4+4=2故选：A ．利用已知条件求出，求出的值，然后求解向量的模即可．|⃗b|⃗a ⋅⃗b 本题考查向量的数量积以及向量的模的求法，考查计算能力．6.函数且的图象恒过定点A ，若点A 在直线上，其中y =log a (x ‒3)+1(a >0a ≠1)mx +ny ‒1=0，则的最小值为 m ⋅n >04m +1n ()A. 16B. 24C. 25D. 50【答案】C【解析】解：令，解得，，x ‒3=1x =4y =1则函数且的图象恒过定点，y =log a (x ‒3)+1(a >0a ≠1)A(4,1)，∴4m +n =1，当且仅当时取等∴4m +1n =(4m +1n )(4m +n)=16+1+4n m +4m n ≥17+24nm⋅4m n=17+8=25m =n =15号，故则的最小值为25，4m+1n故选：C ．最值问题长利用均值不等式求解，适时应用“1”的代换是解本题的关键函数且.y =log a (x ‒3)+1(a >0的图象恒过定点A ，知，点A 在直线上，得又，，a ≠1)A(4,1)mx +ny ‒1=04m +n =1mn >0∴m >0，下用1的变换构造出可以用基本不等式求最值的形式求最值．n >0均值不等式是不等式问题中的确重要公式，应用十分广泛在应用过程中，学生常忽视“等号成立条件”，.特别是对“一正、二定、三相等”这一原则应有很好的掌握当均值不等式中等号不成立时，常利用函数单.调性求最值也可将已知条件适当变形，再利用均值不等式，使得等号成立有时也可利用柯西不等式以确保..等号成立，取得最值．7.已知m ，n ，是直线，，，是平面，给出下列命题：αβγ若，，，则或．①α⊥βα∩β=m n ⊥m n ⊥αn ⊥β若，，，则．②α//βα∩γ=m β∩γ=n m//n 若，，，，则③m ⊂αn ⊂αm//βn//βα//β若，且，，则且④α∩β=m n//m n⊄αn⊄βn//αn//β其中正确的命题是 ()A. B. C. D. ①②②④②③③④【答案】B【解析】解：若，，，则n 和和两个平面之间有相交，在面上故不正确，α⊥βα∩β=m n ⊥m αβ.①若，，，则这是两个平面平行的性质定理，故正确．α//βα∩γ=m β∩γ=n m//n.②若，，，，则，缺少两条直线相交的条件，故不正确，m ⊂αn ⊂αm//βn//βα//β③若，且，，则且，正确，α∩β=m n//m n⊄αn⊄βn//αn//β④故选：B ．和和两个平面之间有相交，在面上故不正确，根据两个平面平行的性质定理，得到正确缺少①n αβ.①②.③两条直线相交的条件，故不正确，正确．③④本题考查空间中直线与平面之间的位置关系，本题解题的关键是正确写出几个元素之间的关系，不要理解不全面，这里题目中出错的地方也是我们经常出错的地方．8.已知函数的部分图象如图所示，则函数f(x)=Asin(ωx +φ)(A >0,ω>0,|φ|<π)图象的一个对称中心可能为 g(x)=Acos(φx +ω)()A.B.C.D.(‒52,0)(16,0)(‒13,0)(56,0)【答案】D【解析】解：由图观察可知：，，，，A =23T2=6‒(‒2)=8∴T =16ω=2πT=2π16=π8代入最高点得，，，(10,23)sin (π8×10+φ)=1∴φ=π2+2kπ‒5π4k∈Z 又，，，|φ|<π∴k =o φ=‒3π4，∴g(x)=23cos (‒3π4x +π8)由，，‒34πx +π8=kπ+π2k ∈Z ，，∴x =‒43k ‒12k ∈Z 当时，，所以一个对称中心可能为k =‒1x =56(56,0)故选：D ．由图观察可得A ，T ，再求得代入最高点可得，所以可得的解析式，再求得对称中心横坐标．ω.φg(x)本题考查了由的部分图象确定其解析式属中档题．y =Asin(ωx +φ).9.过抛物线的焦点F 作倾斜角为的直线，交抛物线于A 、B 两点，则 y 2=2px(p >0)π6|AF||BF|=()A. B. C. D. 7+437‒437±437±23【答案】C【解析】解：抛物线的焦点坐标为，y 2=2px(p >0)(p2,0)直线l 倾斜角为，∵30∘直线l 的方程为：∴y ‒0=33(x ‒p2).设直线与抛物线的交点为、，A(x 1,y 1)B(x 2,y 2)，，∴|AF|=x 1+p2|BF|=x 2+p2联立方程组，消去y 并整理，得，4x 2‒28px +p 2=0解得，，或，，x 1=7+432px 2=7‒432px 2=7+432px 1=7‒432p当，时，x 1=7+432px 2=7‒432p，，∴|AF|=x 1+p2=(4+23)p |BF|=x 2+p2=(4‒23)p ：，∴|AF||BF|=4+234‒23=7+43当，时，x 2=7+432px 1=7‒432p：，∴|AF||BF|=4‒234+23=7‒43故选：C ．写出抛物线的焦点坐标，然后，求解直线的方程，利用焦半径公式求解比值．本题重点考查了抛物线的几何性质、方程、直线与抛物线的位置关系等知识，属于中档题．10.已知双曲线C ：的左、右焦点分别为，，若C 上存在一点P 满足，且x 2m 2‒y 2m 2‒1=1F 1F 2PF 1⊥PF 2的面积为3，则该双曲线的离心率为 △PF 1F 2()A. B. C. 2 D. 35272【答案】B【解析】解：不妨设双曲线右支上存在一点P ，使，可得，∵PF 1⊥PF 2|PF 1|‒|PF 2|=2a ，，∴|PF 1|2+|PF 2|2=4c 2∴|PF 1|⋅|PF 2|=2b 2的面积为，即，，．∴△PF 1F 212|PF 2|⋅|PF 2|=b 2=3m 2‒1=3∴a 2=m 2=4c 2=7则该双曲线的离心率为．e =c a =72故选：B ．根据双曲线的定义结合直角三角形的性质建立方程关系进行求解即可．本题主要考查双曲线离心率的计算，根据向量垂直的等价条件结合直角三角形的边角关系以及双曲线的定义是解决本题的关键．11.已知，若有四个不同的实根，，，且，f(x)={|log 2(x ‒1)|,1<x ≤312x 2‒5x +232,x >3f(x)=m x 1x 2x 3x 4x 1<x 2<x 3<x 4则的取值范围为 (mx 1+mx 2)⋅(x 3+x 4)()A. B. C. D. (0,10)[0,10](0,4)[0,4]【答案】A【解析】解：的图象如右：f(x)={|log 2(x ‒1)|,1<x ≤312x 2‒5x +232,x >3有四个不同的实根，，，且，f(x)=m x 1x 2x 3x 4x 1<x 2<x 3<x 4可得，x 3+x 4=10且，|log 2(x 1‒1)|=|log 2(x 2‒1)|即为，log 2(x 1‒1)+log 2(x 2‒1)=0即有，(x 1‒1)(x 2‒1)=1即为，x 1x 2=x 1+x 2可得(m x 1+mx 2)(x 3+x 4)=10m ⋅x 1+x 2x 1x 2，=10m 由，可得，0<m <10<10m <10故选：A ．画出的图象，由对称性可得，对数的运算性质可得，代入要求的式子，结合f(x)x 3+x 4=10x 1x 2=x 1+x 2图象可得所求范围．本题考查分段函数的图象和应用：求自变量的范围，考查图象的对称性和对数的运算性质，属于中档题．12.已知椭圆中心在原点，且一个焦点为，直线与其相交于M 、N 两点，MN 中点F(0,33)4x +3y ‒13=0的横坐标为1，则此椭圆的方程是 ()A.B.C.D.y 232+x 25=1x 232+y 25=1y 236+x 29=1x 236+y 29=1【答案】C【解析】解 设椭圆方程为，依题意，y 2a 2+x 2b 2=1(a >b >0)c =33设，，可得：；，M(x 1,y 1)N(x 2,y 2)y 21a 2+x 21b 2=1y 22a 2+x 22b 2=1两式作差化简可得：，y 2‒y 1x 2‒x 1=‒a 2b2⋅x 1+x 2y1+y 2=‒43直线与其相交于M 、N 两点，MN 中点的横坐标为1，4x +3y ‒13=0则，则，，，解得x 1+x 2=2y 1+y 2=6∴a 2b2⋅13=43a 2‒b 2=27b 2=9.a 2=36椭圆的标准方程是：∴y 236+x 29=1..故选：C ．先设出椭圆的方程，然后利用平方差法，及MN 的中点的横坐标为1，即得a ，b ，然后求解椭椭圆标准方程．本题考查椭圆标准方程的求法，考查椭圆的简单性质，是中档题．二、填空题（本大题共4小题，共20.0分）13.设变量x ，y 满足约束条件则的最大值为______．{x ≥0x ‒y ≥02x ‒y ‒2≤0z =3x ‒2y 【答案】4【解析】解：依题意，画出可行域如图示，()则对于目标函数，z =3x ‒2y 当直线经过时，A(0,‒2)z 取到最大值，．Zmax =4故答案为：4．先根据约束条件画出可行域，设，再利用z 的几z =3x‒2y 何意义求最值，只需求出直线过可行域内的点A z =3x ‒2y 时，从而得到的最大值即可．z =3x ‒2y 本题主要考查了用平面区域二元一次不等式组，以及简单的转化思想和数形结合的思想，属中档题目标函数有唯一最.优解是我们最常见的问题，这类问题一般要分三步：画出可行域、求出关键点、定出最优解．14.由直线上的一点向圆引切线，则切线长的最小值为______．y =x +1(x ‒3)2+y 2=1【答案】7【解析】解：从题意看出，切线长、直线上的点到圆心的距离、半径之间满足勾股定理，显然圆心到直线的距离最小时，切线长也最小．圆心到直线的距离为：．42=22切线长的最小值为：，(22)2‒1=7故答案为：7从题意看出，切线长、直线上的点到圆心的距离、半径之间满足勾股定理，显然圆心到直线的距离最小时，切线长也最小．本题考查直线和圆的方程的应用，圆的切线方程，考查转化的数学思想，是基础题．15.三棱锥，平面ABC ，，，单位：，则三棱锥P ‒ABC PA ⊥∠ABC =90∘PA =AB =1,BC =2(cm)外接球的体积等于______．P ‒ABC cm 3【答案】4π3【解析】解：三棱锥中，平面ABC ，，P ‒ABC PA ⊥AB ⊥BC ，，PA =AB =1BC =2画出几何图形如图所示；补充图形为长方体，则棱长分别为1，1，；2对角线长为，∵12+12+(2)2=2三棱锥的外接球的半径为1，∴D ‒ABC 该三棱锥外接球的体积为．∴43×π×13=4π3cm 3故答案为：．4π3补充图形为长方体，三棱锥的外接球，与棱长为1，1，的长方体外接球是同一个外接球，用长方P ‒ABC 2体的对角线长求外接球的半径，可得球的体积．本题考查了空间几何体的性质，构建容易操作的几何体，把问题转化求解是关键．16.已知数列中，，，若对于任意的，，不等式{a n }a 1=2n(a n +1‒a n )=a n +1n ∈N ∗.t ∈[0,1]n ∈N ∗恒成立，则实数a 的取值范围为______．a n +1n +1<‒2t 2‒(a +1)t +a 2‒a +3【答案】或a ≤‒1a ≥3【解析】解：根据题意，数列中，，{a n }n(a n +1‒a n )=a n +1，∴na n +1‒(n +1)a n =1，∴a n +1n +1‒a nn ═1n(n ‒1)=1n ‒1n +1，∴a n +1n +1=(a n +1n +1‒a nn )+(a nn ‒a n ‒1n ‒1)+…+(a 2‒a 1)+a 1，=(1n ‒1n +1)+(1n ‒1‒1n )+…+(1‒12)+2=3‒1n +1<3不等式恒成立，∵a n +1n +1<‒2t 2‒(a +1)t +a 2‒a +3∴3≤‒2t 2‒(a +1)t +a 2‒a +3，在上恒成立，∴2t 2+(a +1)t ‒a 2+a ≤0t ∈[0,1]设，，f(a)=2t 2+(a +1)t ‒a 2+a t ∈[0,1]，即，解得或，∴{f(0)≤0f(1)≤0{‒a 2+a ≤02+a +1‒a 2+a ≤0a ≤‒1a ≥3故答案为：或．a ≤‒1a ≥3根据题意，数列中，，可得，利用迭代法和裂项求和，以{a n }n(a n +1‒a n )=a n +1a n +1n +1‒a nn ═1n(n ‒1)=1n ‒1n +1及放缩法可得，则原不等式可转化为，在上恒成立，构造函数a n +1n +1<32t 2+(a +1)t ‒a 2+a ≤0t ∈[0,1]，，可得，解得即可f(a)=2t 2+(a +1)t ‒a2+a t ∈[0,1]{f(0)≤0f(1)≤0本题考查了数列递推公式，涉及数列的求和，注意运用裂项相消求和和不等式恒成立问题的解法，关键是对的变形，属于难题n(a n +1‒a n )=a n +1三、解答题（本大题共6小题，共70.0分）17.在中，角A ，B ，C 的对边分别是a ，b ，c ，，△ABC C =60∘2c =3b.求角A ，B 的大小；(1)若D 为边AC 上一点，且，的面积为，求BD 的长．(2)a =4△BCD 3【答案】本题满分为12分()解：，可得：，由，可得：，(1)∵C =60∘sinC =322c =3b cb=32又由正弦定理，可得：，解得：，∵cb=sinCsinB 32sinB=32sinB =22由已知可得，可得B 为锐角，∵b <c 可得：，．∴B =45∘A =π‒B ‒C =75∘的面积为，即：，解得：，(2)∵△BCD 312a⋅CD ⋅sinC =12×4×CD ×32=3CD =1由余弦定理可得：．∴BD =BC 2+CD 2‒2BC ⋅CD ⋅cosC =42+12‒2×4×1×12=13【解析】由，可得，由，可得：，又由正弦定理可得：，解得，(1)C =60∘sinC 2c =3b cb=323sinB =32sinB 结合，可得B 为锐角，利用三角形内角和定理可求B ，A 的值．b <c 利用三角形面积公式及已知可求CD ，由余弦定理即可解得BD 的值．(2)本题主要考查了三角形面积公式，正弦定理，余弦定理，三角形内角和定理，考查了数形结合思想的应用和计算能力，属于中档题．18.已知数列的前n 项和满足，且{a n }S n 2S n =a 2n +n ‒1a n >1求数列的通项公式；(1){a n }求的值．(2)T n =a 1⋅2a 1+a 2⋅2a 2+…+a n ⋅2an 【答案】解：当时，，，解得．(1)n =12S 1=2a 1=a 21+1‒1a 1>1a 1=2当时，，n ≥22a n =2(S n ‒S n ‒1)=a 2n +n ‒1‒(a 2n ‒1+n ‒2)化为：，又，(a n +a n ‒1‒1)(a n ‒a n ‒1‒1)=0a n >1，∴a n ‒a n ‒1=1数列是公差为1的等差数列，公差为1．∴{a n }．∴a n =2+(n ‒1)=n +1．(2)a n ⋅2a n=(n +1)⋅2n +1，∵T n =2×22+3×23+4×24+…+(n +1)⋅2n +1，2T n =2×23+3×24+…+n ⋅2n +1+(n +1)⋅2n +2两式相减得：，‒T n =23+(23+24+…+2n +1)‒(n +1)⋅2n +2=8+8(2n ‒1‒1)2‒1‒(n +1)⋅2n +2=‒n ⋅2n +2．∴T n =n ⋅2n +2【解析】当时，，，解得当时，，又，(1)n =12S 1=2a 1=a 21+1‒1a 1>1a 1.n ≥22a n =2(S n ‒S n ‒1)a n >1，利用等差数列的通项公式即可得出．a n ‒a n ‒1=1利用错位相减法即可得出．(2)a n ⋅2a n=(n +1)⋅2n +1.本题考查了等差数列与等比数列的通项公式与求和公式、数列递推关系，考查了推理能力与计算能力，属于中档题．19.某校从高一年级参加期末考试的学生中抽出50名学生，并统计了他们的数学成绩，将数学成绩进行分组，并根据各组人数制成如下频率分布表：分组频数频率[40,50)a 0.04[50,60)3b [60,70)140.28[70,80)150.30[80,90)c d[90,100]40.08合计501写出a ，b ，c ，d 的值，并估计本次考试全年级学生的数学平均分同一组中的数据用该组区间的中(1)(点值作代表；)现从成绩在内的学生中任选出两名同学，从成绩在内的学生中任选一名同学，共三(2)[90,100][40,50)名同学参加学习习惯问卷调查活动若同学的数学成绩为43分，同学的数学成绩为95分，求，.A 1B 1A 1两同学恰好都被选出的概率．B 1【答案】解：由频率分布表，得：，(1){a 50=0.04350=ba +3+14+15+c +4=500.04+b +0.28+0.30+d +0.08=1解得，，，，a =2b =0.06c =12d =0.24估计本次考试全年级学生的数学平均分为：．45×0.04+55×0.06+65×0.28+75×0.3+85×0.24+95×0.08=73.8设数学成绩在内的四名同学分别为，，，，(2)[90,100]B 1B 2B 3B 4成绩在内的两名同学为，，[40,50)A 1A 2则选出的三名同学可以为：、、、、、、、A 1B 1B 2A 1B 1B 3A 1B 1B 4A 1B 2B 3A 1B 2B 4A 1B 3B 4A 2B 1B 2、、、、，共有12种情况．A 2B 1B 3A 2B 1B 4A 2B 2B 3A 2B 2B 4A 2B 3B 4，两名同学恰好都被选出的有、、，共有3种情况，A 1B 1A 1B 1B 2A 1B 1B 3A 1B 1B 4所以，两名同学恰好都被选出的概率为．A 1B 1P =312=14【解析】由频率分布表，列出方程组，能求出a ，b ，c ，d 的值，由此能估计本次考试全年级学生的数学(1)平均分．设数学成绩在内的四名同学分别为，，，，成绩在内的两名同学为，，利(2)[90,100]B 1B 2B 3B 4[40,50)A 1A 2用列举法能求出，两名同学恰好都被选出的概率．A 1B 1本题考查频率分布表曲的应用，考查概率的求法，考查列举法等基础知识，考查运算求解能力，考查函数与方程思想，是基础题．20.已知抛物线C ：的焦点为，O 为坐标原点，A ，B 是抛物线C 上异于O 的两点．y 2=2px(p >0)F(1,0)求抛物线C 的方程；(I)Ⅱ若直线OA ，OB 的斜率之积为，求证：直线AB 过定点．()‒12【答案】解：Ⅰ因为抛物线的焦点坐标为，所以，所以．()y 2=2px(p >0)(1,0)p2=1p =2所以抛物线C 的方程为分y 2=4x (4)Ⅱ证明：当直线AB 的斜率不存在时，()①设 ，，A(t 24,t)B(t 24,‒t)因为直线OA ，OB 的斜率之积为，‒12所以，化简得．tt24⋅‒tt24=‒12t 2=32所以，，此时直线AB 的方程为分A(8,t)B(8,‒t)x =8 (7)当直线AB 的斜率存在时，设其方程为，，，②y =kx +b A(x A ,y A )B(x B ,y B )联立得化简得分{y 2=4xy =kx +b ky 2‒4y +4b =0 (8)根据根与系数的关系得，y A y B =4b k 因为直线OA ，OB 的斜率之积为，‒12所以，yA xA⋅yB xB =‒12即．x A x B +2y A y B =0即，y 2A4⋅y 2B4+2y A y B =0解得舍去或．y A y B =0()y A y B =‒32所以，即，所以，y A y B =4b k=‒32b =‒8k y =kx ‒8k 即．y =k(x ‒8)综上所述，直线AB 过x 轴上一定点分(8,0) (12)【解析】利用抛物线的焦点坐标，求出p ，然后求抛物线C 的方程；(I)Ⅱ通过直线的斜率是否存在，设出直线方程，与抛物线方程联立，利用韦达定理以及斜率乘积关系，转化()求解即可．本题考查直线与抛物线的位置关系的应用，抛物线的方程的求法，考查分析问题解决问题的能力，设而不求方法的应用．21.如图，在直角梯形中，，，直角梯形通过AA 1B 1B ∠A 1AB =90∘A 1B 1//AB AB =AA 1=2A 1B 1=2.AA 1C 1C 直角梯形以直线为轴旋转得到，且使得平面平面，M 为线段BC 的中点，AA 1B 1B AA 1AA 1C 1C ⊥AA 1B 1B P 为线段上的动点．BB 1Ⅰ求证：；()AC ⊥AB Ⅱ当点P 是线段中点时，求二面角的余弦值；()BB 1P ‒AM ‒B Ⅲ是否存在点P ，使得直线平面AMP ？请说明理由．()A 1C//【答案】证明：Ⅰ由已知，平面平面()∠A 1AC =90∘AA 1C 1C ⊥，AA 1B 1B 平面，平面平面，AC ⊂ACC 1A 1ACC 1A 1∩ABB 1A 1=AA 1平面，∴AC ⊥ABB 1A 1平面，．∵AB ⊂ABB 1A 1∴AC ⊥AB 解：Ⅱ由Ⅰ知AC 、AB 、两两垂直，()()AA 1分别以AC 、AB 、为x ，y ，z 轴，建立空间直角坐标系，AA 1由已知，AB =AC =AA 1=2A 1B 1=2A 1C 1=20，，2，，0，，1，，0，∴A(0,0)B(0,0)C(2,0)B 1(0,2)A 1(0,，2)为线段BC 的中点，P 为线段的中点，∵M BB 11，，，1，，，∴M(1,0)P(0,32,1)⃗AM =(1,0)⃗AP=(0,32,1)设平面APM 的一个法向量y ，，⃗n=(x,z)则，取，得，{⃗n ⋅⃗AM =x +y =0⃗n ⋅⃗AP=32y +z =0x =2⃗n =(2,‒2,3)平面ABM 的法向量0，，⃗m=(0,1)由图知二面角的大小为锐角，P ‒AM ‒B ，∴|cos <⃗m ,⃗n>|=|⃗m ⋅⃗n||⃗m|⋅|⃗n|=317=31717二面角的余弦值为．∴P ‒AM ‒B 31717Ⅲ存在点P ，使得直线平面AMP ．()A 1C//理由如下：设，且，，则，P(x 1,y 1,z 1)⃗BP =λ⃗BB 1λ∈[0,1](x 1,y 1‒2,z 1)=(0,‒λ,2λ)设平面AMP 的一个法向量y ，，⃗p=(x,z)则，取，得1，，不符合题意，{⃗p ⋅⃗AM=x +y =0⃗p ⋅⃗AP=(2‒λ)y +2λz =0y =1⃗p=(‒1,λ‒22λ)(λ=0)0，，平面AMP ，，∵⃗A 1C=(2,‒2)A 1C//∴⃗A 1C⊥⃗p ，解得，∴⃗A 1C ⋅⃗p =‒2‒λ‒2λ=0λ=23存在点P ，使得直线平面AMP ．∴A 1C//【解析】Ⅰ平面平面，从而平面，由此能证明．()AA 1C 1C ⊥AA 1B 1B AC ⊥ABB 1A 1AC ⊥AB Ⅱ以AC 、AB 、为x ，y ，z 轴，建立空间直角坐标系，利用向量法能求出二面角的余弦值．()AA 1P ‒AM ‒B Ⅲ设，且，，则，求了平面AMP 的一个法向量，利()P(x 1,y 1,z 1)⃗BP =λ⃗BB 1λ∈[0,1](x 1,y 1‒2,z 1)=(0,‒λ,2λ)用向量法能求出存在点P ，使得直线平面AMP ．A 1C//本题考查线线垂直的证明，考查二面角的余弦值的求法，考查满足线面平行的证明是否存在的判断与求法，考查空间中线线、线面、面面间的位置关系等基础知识，考查运算求解能力，考查函数与方程思想，是中档题．22.在平面直角坐标系xOy 中，椭圆C ：的离心率为，点在椭圆C 上．x 2a2+y 2b2=1(a >b >0)12M(1,32)Ⅰ求椭圆C 的方程；()Ⅱ已知与为平面内的两个定点，过点的直线l 与椭圆C 交于A ，B 两点，求四边()P(‒2,0)Q(2,0)(1,0)形APBQ 面积的最大值．【答案】解：由可得，，又因为，所以(I)ca=12a =2c b 2=a 2‒c 2b 2=3c 2所以椭圆C 方程为，又因为在椭圆C 上，所以x 24c 2+y 23c 2=1M(1,32)124c 2+(32)23c 2=1所以，所以，，故椭圆方程为．c 2=1a 2=4b 2=3x 24+y 23=1方法一：设l 的方程为，联立，(II)x =my +1{x 24+y 23=1x =my +1消去x 得，设点，，(3m 2+4)y 2+6my ‒9=0A(x 1,y 1)B(x 2,y 2)有，△>0,y 1+y 2=‒6m 3m 2+4,y 1y 2=‒93m 2+4所以令|y 1‒y 2|=(y 1+y 2)2‒4y 1y 2=(‒6m 3m 2+4)2‒4×‒93m 2+4=12m 2+13m 2+4S =12×4×12m 2+1(3m 2+4)，t =1+m 2,t ≥1有，由函数，S =24t 3t 2+1=243t +1ty =3t +1tt ∈[1,+∞)y'=3‒1t 2>0,t ∈[1,+∞)故函数，在上单调递增，y =3t +1t[1,+∞)故，故3t +1t≥4S =24t3t 2+1=243t +1t≤6当且仅当即时等号成立，t =1m =0四边形APBQ 面积的最大值为6．方法二：设l 的方程为，联立，x =my +1{x 24+y 23=1x =my +1消去x 得，设点，，(3m 2+4)y 2+6my ‒9=0A(x 1,y 1)B(x 2,y 2)有，△>0,y 1+y 2=‒6m 3m 2+4,y 1y 2=‒93m 2+4有，|AB|=1+m2121+m 23m 2+4=12(1+m 2)3m 2+4点到直线l 的距离为，P(‒2,0)31+m 2点到直线l 的距离为，Q(2,0)11+m 2从而四边形APBQ 的面积，S =12×12(1+m 2)3m 2+4×41+m 2=241+m 23m 2+4令，t =1+m 2,t ≥1有，S =24t 3t 2+1=243t +1t 函数，y =3t +1tt ∈[1,+∞)y'=3‒1t 2>0,t ∈[1,+∞)故函数，在上单调递增，y =3t +1t[1,+∞)有，故3t +1t≥4S =24t3t 2+1=243t +1t≤6当且仅当即时等号成立，四边形APBQ 面积的最大值为6．t =1m =0方法三：当l 的斜率不存在时，l ：，①x =1此时，四边形APBQ 的面积为6．当l 的斜率存在时，设l 为：，②y =k(x ‒1)(k ≠0)y =k(x ‒1)(k ≠0)则，，{x 24+y 23=1y =k(x ‒1)∴(3+4k 2)x 2‒8k 2x +4k 2‒12=0，△>0,x 1+x 2=8k 23+4k 2,x 1x 2=4k 2‒123+4k 2，∴|y 1‒y 2|=|k(x 1‒x 2)|=k 2×[(x 1+x 2)2‒4x 1x 2]=12×k 2(k 2+1)(3+4k 2)2四边形APBQ 的面积，∴S =12×4×|y 1‒y 2|=24×k 2(k 2+1)(3+4k 2)2令t =3+4k 2(t >3)t =3+4k 2(t >3)则，．k 2=t ‒34k 2=t ‒34S =6×‒3×(1t )2‒2×1t +1(0<1t <13)综上，四边形APBQ 面积的最大值为6．∴S =6×‒3×(1t )2‒2×1t +1,(0<1t <13)∴0<S <6【解析】由可得，，又，，题意C 方程为，又在椭圆C(I)ca=12a=2c b 2=a 2‒c 2b 2=3c 2x 24c2+y 23c2=1M(1,32)上，可得，基础即可得出．124c 2+(32)23c 2=1方法一：设l 的方程为，联立与椭圆方程联立化为，设点，(II)x =my +1(3m 2+4)y 2+6my ‒9=0A(x 1,y 1)，利用根与系数的关系，可得S ，利用求导研究函数的单调性即可得B(x 2,y 2)|y 1‒y 2|=(y 1+y 2)2‒4y 1y 2出．方法二：设l 的方程为，与椭圆方程联立化为，设点，x =my +1(3m 2+4)y 2+6my ‒9=0A(x 1,y 1)，利用弦长公式可得，点到直线l 的距离为，点到直线l 的距离为，B(x 2,y 2)|AB|P(‒2,0)31+m 2Q(2,0)11+m 2即可得出从而四边形APBQ 的面积利用导数研究函数的单调性即可得出．S.方法三：当l 的斜率不存在时，l ：，此时，四边形APBQ 的面积为6．①x =1当l 的斜率存在时，设l 为：，，联立，可得②y =k(x ‒1)(k ≠0)y =k(x ‒1)(k ≠0){x 24+y 23=1y =k(x ‒1)，利用根与系数的关系、弦长公式可得可得四边形APBQ 的面积(3+4k 2)x 2‒8k 2x +4k 2‒12=0|AB|.，通过换元利用导数研究函数的单调性即可得出．S =12×4×|y 1‒y 2|=24×k 2(k 2+1)(3+4k 2)2本题考查了椭圆的标准方程及其性质、利用导数研究函数的单调性极值、一元二次方程的根与系数、弦长公式，考查了推理能力与计算能力，属于难题．。
辽宁省六校协作体2018-2019学年高二下学期期初考试生物试卷(有答案)
辽宁省六校协作体2018-2019学年高二下学期期初考试
生物试卷
2018—2019学年度下学期省六校协作体高二期初考试
生物答案
第Ⅰ卷
第Ⅱ卷
41. (除注明外，每空1分)
(1)基质含碳的有机物或(CH2O)
(2)保证各组叶片得到充足且相同强度的光照(2分) 低
(3)叶绿素[H]和O2(2分) ADP和Pi发生反应形成ATP(2分)
42. (除注明外，每空1分)
(1)四分体时期T0或T1或T2(2分) 非转基因普通雄性植株(2分)
全为弱抗虫
(2)基因重组染色体结构变异2/3(2分)
43. (每空1分，共10分)
(1)给A组狗喂食适量的胰岛素改为注射斐林试剂应水浴加热
(2)血糖的浓度胰岛素能促进细胞摄取、贮存、利用葡萄糖
胰岛A 肾上腺素
(3)全部组织促进
(4)自身免疫病反馈(负反馈或神经—体液)
44. (除注明外，每空1分)
(1)d 大于(2分)抵抗力
(2)鼠用于生长、发育和繁殖的能量(鼠体内储存的能量) (2分)
(3)标志重捕增加
(4)调节种间关系(2分)。
辽宁省六校协作体2018-2019学年高一下学期期初考试英语试题附答案解析
辽宁省六校协作体2018-2019学年高一下学期期初考试英语试题第Ⅰ卷第一部分听力（共两节，满分30分）略第二部分阅读理解（共两节，满分35分）第一节（共10小题：每小题2.5分，满分25分）阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。
AJohn，a very thin boy, loved football with all his heart when he was very young．Practice after practice，he eagerly gave everything he had．But being half the size of the other boys，he could only sit on the bench and hardly ever played in games．Even though the son was always on the bench，his father was always standing with cheers and encouraging him．When John went to college，he decided to try out for the football team as a “walk-on”．Everyone was sure he could never make the cut，but he did．The coach thought he could provide the other members with the spirit they needed．The news that he had survived the cut excited him so much that he rushed to the nearest phone and called his father．His father shared his excitement and was sent season tickets for all the college games．It was the end of this last football season．One day John received a telegram and asked one week off．Nobody knew what happened except the coach．The coach said，“Don't plan to come back to the gam e on Saturday．”Saturday arrived，and the game was not going well：When the team was ten points behind，John came back．“Coach，please let me play．I’ve just got to play today,”said John．The coach pretended not to hear him．But John persisted，and finally feeling sorry for the kid，the coach gave in．Before long everyone could not believe their eyes. John was doing everything to fight. The opposing team could not stop him. He ran, he passed and blocked like a star. And at last his team won the game．After the game，John looked at the coach，with tears in his eyes，and said，“Well,you knew my dad died,but did you know that my dad was blind?''John swallowed hard and forced a smile, “Dad came to all my games, but today was the first time he could see me play, and I wanted to show him that I could doit.”1. Why did John hardly have any chance to play in games?A. Because he had no time to practice．B. Because he was too young to play games．C. Because everyone looked down upon him．D. Because his body condition was not good．2. The underlined phrase “make the cut” in the second paragraph can be replaced by ““A. make progressB. be allowed to join the teamC. cut himselfD. be refused by the coach3. From the text we can know that ．A. John felt very depre ssed as a “walk-on”B. John's father always taught him how to playC. John's father went to most of his college gamesD. the coach was sure John would be the best player one day4. This story tells us that .A. a burden of one’s choice is not feltB. better to do well than to say wellC. all roads lead to RomeD. where there is a will，there is a way【答案】1. D 2. B 3. C 4. D【解析】这是一篇记叙文。
辽宁省六校协作体18-19学年度高二上学期期初考试——英语(英语)
辽宁省六校协作体2018—2019学年度上学期期初考试高二英语试题第Ⅰ卷第一部分听力（共两节，满分30分）略第二部分阅读理解（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，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。
AWhat makes a building ugly? Everyone's got their own opinion, so it’s hard to say. Now, let’s take a look at some of the world’s worst buildings.The Torre VelascaThe Tone Velasca in Milan is in the centre of Milan (Italy). The tower, which went up in the 1950s, is about 100 metres tall. Its design is actually a modern representation of a traditional Lombard castle, where the lower parts were narrower (狭窄的）than the upper parts.The Mirador BuildingThe Mirador Building in Madrid (Spain) was created by Dutch studio MVRDV and the Spanish architect Blanca Lleo. The building, which is a block of flats, opened in 2005. There is a large rectangular (矩形的）hole in the upper part of it, which is used by the neighbourhood as a meeting area and playground.The Prague TV TowerThe Prague TV Tower is in Prague (the capital of the Czech Republic). It stands 216 metres high and looks a bit like a tall, thin space ship. Prague is famous for its architectural beauty,so when the tower was put up in 1985 by architect Vaclav Aulicky and engineer Jiri Kozak, many felt it didn’t fit in.The Longaberger Basket CompanyThe Longaberger Basket Company building is in Newark, Ohio (USA). The office block was opened in 1997 and looks like a very large basket. It，s got seven floors and two handles at the top. The handles weigh about 150 tons. It may not be the ugliest building in the w orld but it’s certainly one of the most unusual.21. According to the text, the Torre Velasca _________ .A. is similar to a Lombard castleB. was created by Blanca LleoC. has a history of over 100 yearsD. is taller than the Prague TV Tower22. Which of the following buildings might be the Mirador Building?A. B.C D23. When the Prague TV tower was put up, many people___ .A. liked it very muchB. thought little of itC. felt that it might fall down easilyD. thought that it was totally uselessBEmma and Ryan, a married couple, were driving to a friend’s house when Emma turned to Ryan and asked, “Would you like to stop for lunch?”Ryan replie d. “No,I’m not hungry yet,” and continued driving. Meanwhile, Emma sat quietly fuming (十分恼火)in the passenger seat. Ryan could not understand why Emma was unhappy. He had thought she was asking if he was hungry, but in reality, Emma was telling him that she was hungry and wanted to stop for lunch.Misunderstandings like this often occur between men and women, even among people from the same culture. Deborah Tannen, professor of linguistics at Georgetown University in the United States, has studied conversational rules.In Emma and Ryan’s situation, Emma was making a request in the form of a question. Her style of talking is common for women. She needed Ryan to agree they were both hungry. So, Emma asked Ryan what he wanted. She was really telling Ryan what she wanted; however, Ryan did not understand this. If he had been hungry, he would have said something more direct, such as, “I’m hungry. Let’s have lunch.”Tannen believes that most women grow up in a world where talk is used to express feelings. However, most men are raised differently and they tend to keep their feelings to themselves.Tannen says, for men, talk is often used as a situation used outside the home to gain respect, to entertain and get attention , or to exchange information. This is why men communicate by making each other laugh, or talking about sport and work. These men do not always feel it is necessary to talk to feel close or to express their feelings. Women, on the other hand, are encouraged to speak about their feelings since this isa way to build relationships.24. What can be inferred from Emma and Ryan’s story?A. Emma didn’t like Ryan.B. Ryan didn’t want to talk to Emma.C. Ryan didn’t want to eat with Emma.D. Emma wasn’t pleased with Ryan’s answer.25. According to Deborah Tannen, what causes the misunderstanding?A.Different culturesB. Different characteristicsC. Different ways of communicatingD.Different educational background26. Compared with women, men_______.A. talk less about feelingsB. communicate more with othersC. are more likely to become angryD.are better at building relationships27. What might be the best title for the text?A. Why women like to express feelingsB. How men and women communicateC. Different ways of supporting a childD. Misunderstandings in social communicationCRed meat, usually considered to be beef, pork, mutton and lamb products, have nutritional value, but eating red meat also raises some health concerns.Red meat is an excellent source of protein(蛋白质). It is also a key source of vitamin B12, which is only available in animal products and is key for both red blood cell and nerve health. Red meat is also a rich source of zine, selenium(硒) andiron. Zinc and selenium are good for our immune system (免疫系统). Iron helps transport oxygen in the blood, and low levels of iron can lead to feeling tired. Eating red meat, especially lean cuts(廋肉), with meals and snacks, may help people curb hunger between meals and help people with weight management.Health risks of red meat may include the risk of heart disease and cancer. It is usually best to avoid processed meats. These tend to contain lots of salt and nitrites(亚硝酸盐), which may damage our health. Choosing lean cuts and cooking meat correctly may reduce health risks. It is generally advised not to undercook or overcook red meat and to avoid grilling(烧烤).When it comes to red meat and health, another thing is whether the animals are grain or grass-fed. Grass-fed animals frequently have a better quality of life. Grass feeding can be more environmentally friendly as well.Many governments suggest the amount of red meat should be safely included in a healthy diet. The amount varies between nations, but several portions a week are usually acceptable. Those who choose to include eating red meat may wish to choose grass-fed animals and to cut off any fat before eating.28. According to Paragraph 2, red meat _____.A.is quite expensiveB. a major source of various vitaminsC.can provide important nutrition for usD.contains protein that can’t be found in plants29. What does the underlined word “curb”in paragraph2 probably mean?A. experienceB. developC. controlD. realize30. What suggestion does the author give us on eating red meat?A. We should eat it anyway we like.B. We should cut it out from our diet.C. We should cook it as long as possible.D. We should pay attention to its quality and amount.31.What may be the best title for the text?A. Red meat and healthB. Diseases related to red meatC. Unhealthy diet of meat loversD. Methods of cooking red meatDScientists in Argentina have created the world’s first cow with two human genes that will enable it to produce human-like milk.Genetic engineering was used to introduce the "mothers’ milk" genes into the animal before birth, according to the National Institute of Agribusiness Technology in Buenos Aires.As an adult, the cloned cow "will produce milk that is similar to that of humans", which will prove "a development of great importance for the nutrition of infants(婴儿)", said the institute. "The cloned cow, named Rosita ISA, is the first in the world with two human genes that contain the proteins present in human milk," said the statement.In April, scientists in China published details of research showing that they had created dairy cows which produced milk containing proteins found in human breast milk. But the Argentine team said the Chinese only introduced one human gene, while their research involved two, meaning the milk will more closely resemble that of humans.“Our goal was to raise the nutrition value of cows’ milk by adding two human genes, which do good to the immune system of infants,” sai d Adrian Mutto, from the National University of San Martin which worked with the institute.Cristina Kirchner, President of Argentina, said that the scientific institute made all Argentines proud. She also said that she had refused the "honor" of having the cow named after her. "They came to tell me that the name is Cristina, but what woman would like to have a cow named after her? It appeared to me to be more proper to call it Rosita.”32. What is the passage mainly about?A. The importance of genetic engineering.B. Ways to improve mothers’ milk.C. Advanced agricultural technology in Argentina.D. A cloned cow to produce human-like milk.33. Which of the following can best replace “more closely resemble” in Para 4?A. have more varieties thanB. have more nutrition thanC. be more similar toD. be more different from34. What can be inferred from Cristina Kirchner’s statements?A. She was quite satisfied with the research done by the institute.B. She considered it an honor to name the special cow.C. She felt it improper to be named after the cow.D. She refused to give a name to the cow out of self-respect.35. What’s Adrian Mutto’s attitude to the genetic engineering?A.negativeB. supportiveC.indifferentD.mixed第二节（共5小题：每小题2分，满分10分）根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。