物理-四川省成都外国语学校2016-2017学年高二下学期期中考试试卷
四川省成都市外国语学校2017-2018学年高一上学期期中考试数学试卷 Word版含解析

成都外国语学校2017-2018学年上期半期考试高一数学试题一、选择题:本大题共12小题,每小题5分1. 设集合,集合,则=( )A. B. C. D.【答案】D【解析】因为,,所以,故选D.2. 已知,则的大小关系()A. B. C. D.【答案】B【解析】,,故选B.【方法点睛】本题主要考查指数函数的性质、对数函数的性质以及比较大小问题,属于难题.解答比较大小问题,常见思路有两个:一是判断出各个数值所在区间(一般是看三个区间);二是利用函数的单调性直接解答;数值比较多的比大小问题也可以两种方法综合应用.3. 若函数,则的值()A. B. C. D.【答案】C【解析】,,上式中令,可得,故选C.4. 函数的零点所在的区间()A. B. C. D.【答案】A【解析】函数在单调递减,又可得,函数的零点在,故选A.5. 下列四种说法正确的个数有()①若为三个集合,满足,则一定有;②函数的图像与垂直于轴的直线的交点有且仅有一个;③若,则;④若函数在和都为增函数,则在为增函数.A. 个B. 个C. 个D. 个【答案】C【解析】①若为三个集合,满足,则一定有,正确;②根据函数的定义知函数的图象与垂直于轴的直线的交点至多有一个,正确;③若,则,正确;④对于函数,可知函数在和都为增函数,则在不是增函数,函数在和都为增函数,则在为增函数错误,故选C.6. 设全集,集合,若,则这样的集合的个数共有( )A. B. C. D.【答案】D【解析】全集,且,的子集有,可以为,,,,,共个,故选D.7. 为了得到函数的图像,只需把函数图像上所有的点()A. 向左平移个单位长度,再向上平移个单位长度;B. 向右平移个单位长度,再向上平移个单位长度;C. 向右平移个单位长度,再向下平移个单位长度;D. 向左平移个单位长度,再向下平移个单位长度;【答案】C【解析】函数,只需要把函数的图象上所有的向右平移个单位长度,再向下平移个单位长度,故选C.8. 函数的最小值为()A. B. C. D.【答案】B【解析】因为,当时,等号成立,即函数的最小值为,故选B.【易错点晴】本题主要考查利用基本不等式求最值,属于难题.利用基本不等式求最值时,一定要正确理解和掌握“一正,二定,三相等”的内涵:一正是,首先要判断参数是否为正;二定是,其次要看和或积是否为定值(和定积最大,积定和最小);三相等是,最后一定要验证等号能否成立(主要注意两点,一是相等时参数否在定义域内,二是多次用或时等号能否同时成立).9. 如图,在中,点,点在射线上自开始移动,设,过作的垂线,记在直线左边部分的面积,则函数的图象是()A. B.C. D.【答案】D【解析】当0⩽x⩽2时,△OEF的高,∴;当2<x⩽3时,△BEF的高EF=3−x,∴;当x>3时,.则:,结合函数的解析式可得函数图形如D选项所示.本题选择D选项.10. 已知函数,若任意且都有,则实数的取值范围()A. B. C. D.【答案】B【解析】不妨设,,任意可得,可得在上递增,的对称轴,得,故选A.11. 根据有关资料,围棋状态空间复杂度的上限约为,而可观测宇宙中普通物质的原子总数约为.则下列各数中与最接近的是()(参考数据:)A. B. C. D.【答案】B...............12. 若函数有零点,则实数的取值范围()A. B. C. D.【答案】A【解析】有零点,等价于有根,,由,得,在上递增,由,得,在上递减,,,故选A.【方法点睛】本题主要考查函数的零点、利用导数求函数的最值,属于难题. 已知函数有零点(方程有根)求参数取值范围的三种常用的方法:(1)直接法:直接根据题设条件构建关于参数的不等式,再通过解不等式确定参数范围.(2)分离参数法:先将参数分离,转化成求函数值域问题加以解决.(3)数形结合法:先对解析式变形,在同一平面直角坐标系中,画出函数的图象,然后数形结合求解.一是转化为两个函数的图象的交点个数问题,画出两个函数的图象,其交点的个数就是函数零点的个数,二是转化为的交点个数的图象的交点个数问题 .第Ⅱ卷二、填空题:本大概题共4小题,每小题5分13. 集合用列举法表示为_________.【答案】【解析】因为,所以可取,分别列方程解出的值,结合,可得,即,故答案为.14. 若函数的定义域是,则的定义域是__________.【答案】【解析】的定义域是,,的定义域是,令,解得,又因为,,所以故答案为.【方法点晴】本题主要考查抽象函数的定义域、不等式的解法,属于中档题.定义域的三种类型及求法:(1)已知函数的解析式,则构造使解析式有意义的不等式(组)求解;(2) 对实际问题:由实际意义及使解析式有意义构成的不等式(组)求解;(3) 若已知函数的定义域为,则函数的定义域由不等式求出.15. 若函数在上是减函数,则实数的取值范围____________.【答案】【解析】设,则在定义域上单调递减,要使函数,在上单调递减,则有在定义域上单调递增,则须有,即,解得,故实数的取值范围是,故答案为.16. 已知函数,若存在实数且,使得成立,则实数的取值范围为_________.【答案】【解析】三、解答题:解答应写出文字说明过程或演算步骤17. (1);(2)已知求的值.【答案】(1); (2).【解析】试题分析:(1)直接利用对数运算法则以及幂指数的运算法则求解即可;(2)由可得,从而可得的值,进而可得结果.试题解析:(1).(2),,,.18. 设全集,集合,,. (1)求;(2)若,求实数的取值范围.【答案】(1),;(2).【解析】试题分析:(1)先化简,再求出与,根据集合交集的定义求解即可;(2)由交集的运算求出,由和子集的定义列出不等式组,求出的取值范围.试题解析:(1)集合,,且或,或,或. (2)集合,,由得,,,解得实数的取值范围是.19. 设函数,.(1)若,求取值范围;(2)求的最值,并给出最值时对应的的值.【答案】(1);(2)当时,;当时,.【解析】试题分析:(1)由,利用对数函数的单调性可得的取值范围;(2)由(1)可得,利用二次函数的单调性即可得出.试题解析:(1).(2)由(1)可得,,可得,解得时,,当即时,. 20. 某医药研究所开发的一种药,如果成年人按规定的剂量服用,据监测,服药后每毫升中的含药量(微克)与时间(小时)之间近似满足如图所示的曲线.(当时,).(1)写出第一次服药后与之间的函数关系式;(2)据进一步测定,每毫升血液中含药量不少于微克时,治疗疾病有效,求服药一次后治疗疾病有效时间.【答案】(1);(2)小时.【解析】试题分析:(1)由函数图象我们不难得到这是一个分段数,第一段是正比例函数的一段,第二段是指数型函数的一段,由于两段函数均过,故我们可将点代入函数的解析式,求出参数值后,即可得到函数的解析式;(2)由(1)的结论我们将函数值代入函数解析式,构造不等式,可以求出每毫升血液中含药量不少于微克的起始时刻和结束时刻,他们之间的差值即为服药一次治疗疾病有效的时间.试题解析:(1)由图象,设,当时,由得;由得,.(2)由得或,解得,因此服药一次后治疗疾病有效的时间是(小时).【方法点睛】本题主要考查阅读能力及建模能力、分段函数的解析式,属于难题.与实际应用相结合的题型也是高考命题的动向,这类问题的特点是通过现实生活的事例考查书本知识,解决这类问题的关键是耐心读题、仔细理解题,只有吃透题意,才能将实际问题转化为数学模型进行解答.理解本题题意的关键是构造分段函数,构造分段函数时,做到分段合理、不重不漏,分段函数的最值是各段的最大(最小)者的最大者(最小者).21. 已知函数在上有意义,且对任意满足.(1)判断的奇偶性,并证明你的结论;(2)若时,,则能否确定在的单调性?若能,请确定,并证明你的结论,若不能说明理由.【答案】(1)奇函数,证明见解析;(2)单调减函数.【解析】试题分析:(1)先令,得,再令,可得,运用函数的奇偶性的定义可得结果;(2)令,可得,只需证明即可得结论.试题解析:(1)令,则,令,则,则,所以奇函数,(2)单调性的定义证明:设任意,令,则,即:,易证明:,所以由已知条件:,故:,所以,所以在上单调减函数.【方法点睛】本题主要考查函数的奇偶性及函数的单调性,属于中档题.判断函数的奇偶性首先要看函数的定义域是否关于原点对称,如果不对称,既不是奇函数又不是偶函数,如果对称常见方法有:(1)直接法, (正为偶函数,负为减函数);(2)和差法,(和为零奇函数,差为零偶函数);(3)作商法,(为偶函数,为奇函数) .22. 已知函数定义在上的奇函数,的最大值为. (1)求函数的解析式;(2)关于的方程在上有解,求实数的取值范围;(3)若存在,不等式成立,请同学们探究实数的所有可能取值. 【答案】(1);(2);(3).【解析】试题分析:(1)根据,利用的最大值为,可得,再根据即可确定的解析式;(2) 关于的方程在上有解,即在上有解,根据函数单调性的求出的值域,即可得结果;(3)利用函数奇偶性和单调性之间的关系,可得不等式成立等价于成立,即存在使得成立,求出的最小值即可得结果.(1)定义在上的奇函数,所以,试题解析:又易得,从而,,所以,. 故. (2)关于的方程在上有解,即在上有解令:,则在上单调性递增函数,所以在上的值域为,从而,实数的取值范围.(3)因为是奇函数且在为单调递增函数,所以由有,即:存在使得成立,分别由以及在上的图像可知,在上是增函数,所以,所以又即,所以,综上:.。
四川省成都外国语学校2021-2022学年高二下学期期中考试英语试题

四川省成都外国语学校2021-2022学年高二下学期期中考试英语试题学校:___________姓名:___________班级:___________考号:___________一、阅读理解Beijing is the first city ever to hold both Summer and Winter Olympic Games. Now, let’s take a look at some of the most popular events in the Winter Olympic Games.Figure skatingFigure skating is one of the most popular sports at the Winter Olympics, where ice skaters, singly or in pairs, perform freestyle movements of jumps, spins, lifts, and footwork in a graceful manner. The figure skating competition is one of the fiercest at the Winter Olympics. To win the game, the skater can’t make any mistakes.CurlingCurling is one of the most unique sports at the Winter Olympics — a winter sport played by two teams of four players on a rectangular sheet of ice. The two teams take turns to slide large round flat stones towards a target. Members of each team use brooms to sweep the surface of the ice in the path of the stone to control its speed and direction.And while curling may be a “slow” sport, it’s still full of skill, suspense and excitement!SnowboardingSnowboarding is a popular winter sport that involves sliding downhill on snow with a snowboard firmly attached to a rider’s feet. The sport is said to have been inspired by surfing, skiing and skateboarding, as an alternative to alpine skiing (高山滑雪).While snowboarding is one of the newer events — first included at the 1998 Winter Olympics, it has become one of the most popular and exciting sports at the Winter Olympics.Ice hockeyIce hockey is a game between two teams who wear skates and compete on an ice rink (溜冰场). Each team usually has six players. The object is to push the puck (冰球) past a goal line and into a net guarded by a goalkeeper. Ice hockey is popular for its speed and frequent physical contact. Worldwide there are more than a million registered ice hockey players performing regularly in leagues.1.Figure skates ought to be ________.A.elegant and faultlessB.inspiring and excitingC.skillful and defensiveD.calm and fashionable2.Which of the winter sports mentioned above involves team work?A.Figure skating and Curling.B.Curling and Ice hockey.C.Snowboarding and Figure skating.D.Snowboarding and Ice hockey.3.What do we know about these winter sports from the passage?A.Snowboarding originated from skiing, surfing and shooting.B.Figure skating enjoys the greatest popularity.C.Over a million become ice hockey league members each year.D.The curling ice path is brushed to help the stone slide.I fell in love with music from a young age and often sat down making a few songs of my own.What would life be like, I wondered, without a beautiful song? In 1992, I made two love songs to my darling wife and watched tears run down her face as I sang.“Sam,” she said earnestly, “Your songs should be heard by more people.”She got my ballads and started bothering various media people about me, her singing barber husband. Two radio stations took an interest and played the songs. After the programme was aired, I became known in our community as the Singing Barber.The biggest surprise, however, was still to come. I received a call from a music promoter who offered me a long-term recording contract. He explained that he would be investing a lot of money to market my songs. I needed to be wholly focused on selling my records all over Australia.But I hesitated.My friends all told me to go for it. And Mary also thought I should do. “Go, Sam. I’ll manage with the family...it’ll be OK.”I watched my daughter and son playing in the backyard. Soon they would both be in high school and where would I be? I was so used to my family turning to me for love and support. If I were to start a singing career, I would not only miss them terribly, I’d also certainly miss out on watching them grow up. Signing this contract would put a huge gapbetween my family and me and I couldn’t bear it. My family was my life. So I refused the music promoter’s offer. I’m still making music. I’m rich in love and I have no regrets. 4.When the author was offered the contract, most of his friends _______.A.envied himB.laughed at himC.encouraged himD.didn’t believe him5.Why did the author give up the contract?A.Because his wife was strongly against it.B.Because the pay was not attractive enough.C.Because he wanted to care about his two kids.D.Because he didn’t want his family life damaged.6.According to the passage, we can infer that the author _______.A.used to be a country singerB.preferred his present lifeC.went on the road to fameD.regretted giving up his contract7.What does the author mainly intend to tell us?A.One should know himself.B.Interest is the best teacher.C.Family should come first.D.Every dog has its day.Nearly two years after the COVID-19 outbreak, China has granted approval to its first antibody combination therapy for COVID-19 treatment, adding a tool to the world’s fight against the disease.A team from Tsinghua University, along with the Shenzhen People’s Hospital, has accomplished the task in 20 months. It would usually take 10 years. “It can reduce the rate of hospitalization and death by 80 percent,” said Zhang Linqi, leader of the research team.The new antibody drug is immediately effective after being used. Moreover, the therapy can protect people, especially those whose physical condition doesn’t allow vaccination (接种疫苗), from becoming infected (感染) by COVID-19 for around 9 to 12 months, saidZhang.How does it work? When a virus infects a cell, it relies on an important type of protein: the spike proteins (棘突蛋白) on its surface. The spike proteins serve as a key to unlocking a cell. If a virus cannot enter a cell, it will disappear immediately. The job of our antibodies is to block the virus from entering cells. So its target is very precise. In addition, thanks to the coordination between the two antibodies, it is highly efficient in preventing the virus, according to Zhang. The qualities of the new drug make it especially useful for high-risk groups, such as frontline medical workers and people not suitable for vaccination due to various underlying health problems.The new drug is expected to come to the market soon, but it’s not cheap. That’s because of limited production. Noting that China has used science and technology to fight COVID-19 since the beginning of the outbreak, Zhang said, “Science is the key to solving the issue. Science has shown its power in all sectors, from medical treatment, medicine and vaccine development to prevention and control measures.”8.What can we know about the new therapy according to paragraph 1 and paragraph 2? A.It’s the first way to treat COVID-19.B.It dramatically improves the survival rate of patients.C.It takes researchers 10 years to develop the new drug.D.It was developed by the team from one of China’s top universities.9.Which statement does the author probably agree with?A.Only medical workers can take this drug.B.Antibodies stop spike proteins entering a cell.C.The new drug takes effect after a period of use.D.The new drug can protect people from infection for life.10.What can be inferred from the last paragraph?A.It is easy to produce the drug.B.The new drug has been put into use.C.Zhang thought highly of the power of science.D.China is the first country to use technology to fight disease.11.Where does the text probably come from?A.A textbook.B.An educational magazine.C.A medical journal.D.A tourist guide.As people get older, the types of friends they have tend to change. As young adults, humans have a lot of friends. With age, they often prefer to spend their time with just a few close, positive individuals. Researchers long believed that this change was unique to humans, but a new study finds that chimps also have similar tendencies.One explanation for the humans to get picky about social connections has to do with awareness of our limited life span. “People monitor how much time we have left in our life and choose emotionally-fulfilling relationships in old age,” says one of the study's lead authors Alexandra G. Rosati, a psychologist at the University of Michigan. As people age, they don’t want to be surrounded by a large group of negative friends, but would prefer to be near a handful of optimistic individuals.Rosati and her colleagues were curious whether chimps would show similar features even though they don’t seem to be aware of their upcoming death. Researchers used 78, 000 hours of observations made over 20 years from the Kibale Chimpanzee Project in Uganda. The data looked at the social interactions of 21 male chimps between 15 and 58 years old. The researchers only studied male chimps because they show stronger social bonds and have more social interactions than female chimps.Researchers found that wild chimpanzees share a similar pattern. “They interact with others in more positive ways as they get older. Younger adults, in contrast, show more aggression and were more likely to form one-sided relationships where their partner did not reciprocate. ”says Rosati. For example, the older chimpanzees would sit close to theirlong-time companions and groom (给……梳毛) each other, while younger chimps had more one-sided relationships where they would groom a friend, but the action wasn't returned. The study was published in the journal Science.“This aging pattern may be the result of shared changes in our abilities to manage our emotions with age,” Rosati says. “This shared pattern between chimpanzees and humans could represent an adaptive response where older adults focus on important social relationships that provide benefits and avoid interactions that have negative consequences as they lose competitive fighting ability.”12.Why do humans change their preference for friends in old age?A.They don’t like making new friends.B.Their friends pass away one by one.C.They adapt to the changes in nature.D.They know their life is running out.13.What is the purpose of Paragraph 3?A.To show the study was done scientifically.B.To show how scientists tried to prove their assumption.C.To show how hard it was to observe the chimps.D.To show male chimps are unaware of upcoming death.14.What does the underlined word “reciprocate” in Paragraph 4 mean?A.Repay their kindness.B.Take care of them.C.Get along well with them.D.Sit close to them.15.Which can be a suitable title for the text?A.People Prefer Positive Partners in Old AgeB.Positive Bonds Benefit Chimps in Many WaysC.Aging Chimps like Us Get Picky About FriendsD.Chimps Share Similar Tendencies with Humans二、七选五Small talk. Chitchat. These are the short conversations we have at parties, while we wait in line at the store, at family events or work. ____16____ Often we have to make small talk with complete strangers.Many people find these small conversations about random topics difficult. Some people say they hate it. ____17____They may even call it idle chitchat or idle chatter, meaning it doesn't do anything. They consider small talk not important.____18____ These exchanges can open doors that may lead to larger, more meaningful conversations. When you first meet someone or talk to someone you don't know well, it would be awkward to begin a conversation about a really deep topic such as war, politics or the meaning of life. Small talk also gives you the chance to decide if you want to know that person better-or not. Let's say you make small talk with someone at a party. ____19____You may not want to build a friendship with them unless you really, really love cats.Chitchat can also increase your feeling of understanding, or empathy, toward people you know but not well. Chatting with a colleague about their child may help you to understand more of their life outside the office. ______20______A.However, small talk is important.B.And small talk may make us happier.C.But they only want to talk about cats.D.Others say small talk is a waste of time.E.This could help build healthy work relationships.F.However, some people are not good at small talk.G.Sometimes we make small talk with people we already know but not well.三、完形填空I went to the beach nearby. It was a __21__ time watching families come and go for a warm weekend here. As I was near the end of the beach, I noticed a __22__ playing alone. It seems that she built a little sandcastle with a moat(护河) __23__ it and now was trying to__24__ the canal with water.Unluckily, there was no __25__ around to carry water. She would go to the waves, cup her hands and then __26__ to her little sandcastle. Sadly not much of the water was _27_ it to the moat. But she kept trying, still smiling and _28_. I so wished I could __29__, but I didn't have a container with me.Watching her, and feeling helpless, I had an aha moment. I realized that I had a bottle of water in my bag. I quickly __30__ in my bag, took the bottle out, and walked over to __31__ it to her.Confused at first, she smiled but shook her head __32__, saying no. I comforted her with that it would make getting the water much __33__, and that’s what I would do. She smiled widely and finally took it from my hands after I __34__. Not wanting her to feel _35_, I walked off the beach, seeing her running over to the sea with a big smile,__36__ with a bottle in hand.In my heart, I know that when she notices that someone needs _37_ in life, maybe, just maybe, she would recall this little act of kindness by a _38_. And maybe that would make her more _39_ to jump in and help __40__ a little gentler world around her.21.A.bitter B.cloudy C.lovely D.busy 22.A.clerk B.girl C.friend D.waiter 23.A.under B.towards C.behind D.around 24.A.fill B.cover C.mix D.combine 25.A.sand B.pool C.road D.container 26.A.return B.ride C.adapt D.stick 27.A.leading B.getting C.making D.pointing 28.A.surprised B.hopeful C.meaningful D.frightened 29.A.keep on B.go around C.cheer up D.help out 30.A.dug B.broke C.rushed D.came 31.A.lend B.hand C.hold D.leave 32.A.happily B.madly C.shyly D.sadly 33.A.fuller B.better C.faster D.earlier 34.A.insisted B.suggested C.required D.pushed 35.A.proud B.uneasy C.disappointed D.innocent 36.A.connected B.related C.fixed D.equipped 37.A.assistance B.donation C.advice D.choice 38.A.guide B.worker C.tourist D.stranger 39.A.curious B.friendly C.likely D.obvious 40.A.challenge B.create C.enter D.face四、单项选择41.He was _______ by his wife to give up smoking and threw his cigarettes away. A.convinced B.forbidden C.conveyed D.blamed 42.We are confident that we we can manage to solve the problems __________ from the disagreement.A.raising B.arising C.tending D.detecting 43.______ three languages is a requirement of this job that involves translation and interpretation.A.Revising B.Picking C.Mastering D.Deserting 44.Many people equal happiness with wealth and success. So they chase it, without noticingthat the people who have those things aren’t_______happier.A.necessarily B.accurately C.merely D.instantly 45.My friend offered to pay my plane fare, which was very ________ of him.A.mean B.general C.generous D.sharp 46.It’s a custom that people return to their hometown to _________ with their family members in the Spring Festival.A.reunite B.resist C.shelter D.overlook 47.Life has many joys and ________. Friends should share them with each other. A.restrictions B.sorrows C.stresses D.forms 48.As students, we should ________ to the government’s call to save every pencil, every piece of paper, and even every single drop of ink.A.attach B.decline C.tie D.respond 49.After _________ a wallet on the front seat, the old man stood guard for about two hours waiting for the owner to return.A.dropping B.spotting C.carrying D.returning 50.Knowing that an increasing number of animals were endangered, scientists and researchers were _________.A.alarmed B.relieved C.grateful D.permanent 51.Thanks to its abundant resources and mild climate, the cost of living in Chengdu is_______ low compared with that in Beijing.A.eventually B.gradually C.relatively D.basically 52.The start of a new year is a good time to________ on your success and failure of the past. A.dip B.reflect C.strike D.occur 53.The surgeons in a London hospital __________ a new technique to help replace the injured part of the body with an artificial one. It’s a great breakthrough in medicine. A.accessed B.monitored C.pioneered D.equipped 54.It doesn’t matter if there is disagreement about the travel schedule. We can manage to _________ it.A.argue B.fold C.frame D.settle 55.Watching films can benefit movie goers a lot. It’s what films leave them with that_________.A.benefits B.wins C.counts D.signals56.The peace talks between the government and the military took place in the ________ of representatives of civilians(平民).A.recommendation B.presentation C.search D.presence 57.If we teach today's children with yesterday's _____ teaching method, we'll rob them of tomorrow.A.confidential B.commercial C.conventional D.conditional 58.The final score of the basketball match was 93-94. We were only ________ beaten. A.nearly B.slightly C.narrowly D.lightly 59.The story tells of a classic_______between love and duty, which is why masses of readers identify with it.A.generation B.conflict C.discount D.regulation 60.The cat behaved _________. Will wondered what had happened and intended to explore the unknown world.A.curiously B.randomly C.safely D.severely五、选用适当的单词或短语补全句子选词填空61.Bette couldn’t ____________________ why her close friend was upset with her.62.It is the first time that I ____________________ an excuse for my mistake and I feel ashamed.63.A statue of Dr Bethune was set up ____________________ the contributions he had made to saving so many lives in the war.64.The composer is famous for ____________________his rich imagination to compose music.65.It’s hard to imagine ____________________ the experience again. It was too terrible.六、用单词的适当形式完成句子66.The ___________ (characteristic) of Chinese music are related to the Chinese languagewhere the same pronunciation with different tones represents different meanings.(所给词的适当形式填空)67.A ___________ (balance)diet without a lot of fat can help the body avoid many diseases. (所给词的适当形式填空)68.Nervous about the coming interview, I couldn’t stop ___________ (bite) my nails. (所给词的适当形式填空)69.The experiment made _________ possible to break down waste in the natural environment. (用适当的词填空)70.After decades, Peggy still regrets when she was a child___________ (miss) out on a lot of fun. (所给词的适当形式填空)71.When she realized that she had left her handbag in the taxi, the taxi _________ (disappear). (所给词的适当形式填空)72.If a child is brought up in the countryside, he will be much __________ (close) to nature. (所给词的适当形式填空)73.Since the COVID-19__________ (burst) in 2020, it has become a serious problem around the world. (所给词的适当形式填空)74.Su Bingtian’s breaking the Asian record in the Olympic Games was an exciting moment, _________that impressed us a lot. (用适当的词填空)75.It was a rough estimate _________about 20 percent of the rubbish was dumped into the sea. (用适当的词填空)七、单句改错单句改错76.All of sudden, a car rushed out, knocked over the man and disappeared quickly. 77.The robots are able to read books and dance with music moving their heads and arms. 78.Keeping the door and windows closed or the typhoon will do damage to the house. 79.It is 5 years before we had a journey together. How I wish we could travel together again! 80.At the side of the road was tall trees and beautiful shops which attracted visitors from home and abroad.八、用单词的适当形式完成短文阅读下面材料,在空白处填入适当的内容(1个单词)或括号内单词的正确形式。
2022-2023学年四川省成都市实验外国语学校高二下学期第一次阶段性测试物理试题

2022-2023学年四川省成都市实验外国语学校高二下学期第一次阶段性测试物理试题1.在物理学的发展过程中,许多科学家作出了巨大的贡献。
以下关于物理学史的叙述符合实际的是()A.法拉第首先发现了电流的磁效应现象B.麦克斯韦建立了电磁场理论并预言了电磁波的存在,赫兹用实验证实了电磁波的存在C.法拉第电磁感应定律是由法拉第通过实验总结得到的D.能量子首先是由牛顿提出的2.如图所示为“研究影响平行板电容器电容大小的因素”的实验装置图,把静电计的金属球与电容器右极板连接,金属外壳与左极板均接地,用静电计测量已充电的平行板电容器两极板间的电势差U,下列选项中正确的是()A.将左极板上移少许,电容器的两极板所带电量应该减小B.将左极板上移少许,静电计指针的偏转角度应该会增大C.本实验可以用适当量程的电压表代替静电计进行实验D.左极板上移是为了探究平行板间的距离对电容的影响3.如图所示,理想变压器原、副线圈的匝数比为,b是原线圈的中心抽头,副线圈接理想电压表和理想电流表。
在原线圈c、d两端加上的交变电压,则()A.开关与a连接时,电压表的示数为B.开关与a连接时,滑动变阻器触头P向上移动,电压表示数变小C.开关与b连接时,滑动变阻器触头P向下移动,电流表示数变小D.变阻器R不变,当单刀双掷开关由a扳向b时,输入功率不变4.一架飞机在广州上空匀速巡航,机翼保持水平,飞行高度不变,由于受地磁场竖直向下分量的作用,金属机翼上有电势差,设飞行员左方机翼末端处的电势为,右方机翼末端处电势为,则下列说法正确的是()A.若飞机从东往西飞,比高B.若飞机从南往北飞,比低C.若飞机从北往南飞,比低D.由于飞机匀速飞行,则等于5.质谱仪是分离各种元素的同位素并测量它们质量的仪器,它由静电加速器、速度选择器、偏转磁场、显示屏等组成,它的结构原理如图所示.金属极板与之间的电场强度为E,磁感应强度为.现让一束离子流经电场加速后,由左端平行于极板射入质谱仪,沿着直线通过速度选择器后,并从狭缝进入匀强磁场,在磁场中分为如图所示的三束,则下列相关说法中不正确的是()A.速度选择器的极板带正电B.离子2带正电C.能通过狭缝的带电粒子的速率等于D.粒子2的比荷绝对值最小6.交警使用的某型号酒精测试仪如图甲,其工作原理如图乙所示,传感器电阻R的电阻值随酒精气体浓度的增大而减小,电源的电动势为E,内阻为r,电路中的电表均为理想电表。
2023-2024学年四川省成都市高二下册期中考试数学(理)试题(含解析)

2023-2024学年四川省成都市高二下册期中考试数学(理)试题一、单选题(本大题共12小题,共60.0分.在每小题列出的选项中,选出符合题目的一项)1.已知集合{}{}220,0,1A xx x B =-≤=∣,则A B ⋂=()A.[]0,1B.{}0,1 C.[]0,2D.{}0,1,22.复数3i1iz +=+在复平面内表示的点的坐标为()A.()2,1- B.()1,1- C.()1,2 D.()2,23.函数()3,0ln ,0x e x f x x x +⎧≤=⎨>⎩,则()1f f ⎡⎤-=⎣⎦()A.-1B.0C.ln2D.24.在极坐标系中,圆2cos ρθ=-的圆心的极坐标是()A.1,2π⎛⎫ ⎪⎝⎭B.1,2π⎛⎫- ⎪⎝⎭ C.()1,0 D.()1,π5.下列函数中,在定义域内既是奇函数又是增函数的是()A.()323f x x x=+ B.()5tan f x x=C.()8f x x=-D.()f x x =+6.执行如图所示的程序框图,输出的结果是()A.13B.14C.15D.177.树立劳动观念对人的健康成长至关重要,某实践小组共有4名男生,2名女生,现从中选出4人参加校园植树活动,其中至少有一名女生的选法共有()A.8种B.14种C.12种D.9种8.收集一只棉铃虫的产卵数y 与温度x 的几组数据后发现两个变量有相关关系,按不同的曲线来拟合y 与x 之间的回归方程,并算出了对应的决定系数2如下表:则这组数据模型的回归方程的最好选择应是()A.ˆ19.8463.7yx =- B.0.273.84ˆx ye -=C.2ˆ0.367202yx =- D.ˆy =9.若443243210(1)x a x a x a x a x a -=++++,则4321a a a a -+-=()A.-1B.1C.15D.1610.函数2ln x x y x=的图象大致是()A. B.C.D.11.函数()3224f x x x x =--+,当[]3,3x ∈-时,有()214f x m m -恒成立,则实数m 的取值范围是()A.()3,11- B.()3,11 C.[]2,7D.[]3,1112.已知函数()22(1)sin 1x xf x x ++=+,其导函数记为()f x ',则()()()()2022202220222022f f f f ++--'-'=()A.-3B.3C.2D.-2二、填空题(本大题共4小题,共20.0分)13.复数()i 12i z =+的共轭复数为__________.14.10(1)x -的展开式的第6项系数是__________.15.已知甲,乙,丙三个人中,只有一个人会中国象棋.甲说:“我会”;乙说:“我不会”;丙说:“甲不会”.如果这三句话只有一句是真的,那么甲,乙,丙三个人中会中国象棋的是__________.16.已知,a b 为实数,不等式ln ax b x +≥恒成立,则ba的最小值为__________.三、解答题(本大题共6小题,共70.0分.解答应写出文字说明,证明过程或演算步骤)17.(本小题10.0分)在平面直角坐标系xOy 中,曲线22:1C x y +=所对应的图形经过伸缩变换2x x y =⎧⎪⎨=⎪'⎩'得到图形C '.(1)写出曲线C '的平面直角坐标方程;(2)点P 在曲线C '上,求点P到直线60l y +-=的距离的最小值及此时点P 的坐标.18.(本小题12.0分)已知函数()322f x x ax bx a =+++在1x =-处取得极大值1.(1)求,a b 的值;(2)当[]1,1x ∈-时,求()f x 的最大值.19.(本小题12.0分)随着2022年北京冬季奥运会的如火如茶地进行.2022年北京冬季奥运会吉祥物“冰墩墩”受到人们的青睐,现某特许商品专卖店每天均进货一次,卖一个吉祥物“冰墩墩”可获利50元,若供大于求,则每天剩余的吉祥物“冰墩墩”需交保管费10元/个;若供不应求,则可从其他商店调剂供应,此时调剂的每一个吉祥物“冰墩墩”该店仅获利20元.该店调查上届冬季奥运会吉祥物每天(共计20天)的需求量(单位:个),统计数据得到下表:每天需求量162163164165166频数24653以上述20天吉祥物的需求量的频率作为各需求量发生的概率.记X 表示每天吉祥物“冰墩墩”的需求量.(1)求X 的分布列;(2)若该店某一天购进164个吉祥物“冰墩墩”,则当天的平均利润为多少元.20.(本小题12.0分)光伏发电是利用太阳能电池及相关设备将太阳光能直接转化为电能.近几年在国内出台的光伏发电补贴政策的引导下,某地光伏发电装机量急剧上涨,如下表:年份2011年2012年2013年2014年2015年2016年2017年2018年年份代码x12345678新增光伏装机量y 兆瓦0.40.8 1.6 3.1 5.17.19.712.2某位同学分别用两种模型:①2ˆybx a =+,②ˆy dx c =+进行拟合,得到相应的回归方程并进行残差分析,残差图如下(注:残差等于ˆi i y y-)经过计算得()()()()()888211172.8,42,686.8iiii i i i i x x y y x x t ty y ===--=-=--=∑∑∑,()8213570ii tt =-=∑,其中8211,8i ii i t x t t ===∑.(1)根据残差图,比较模型①,②的拟合效果,应该选择哪个模型?并简要说明理由.(2)根据(1)的判断结果及表中数据建立y 关于x 的回归方程,并预测该地区2020年新增光伏装机量是多少.(在计算回归系数时精确到0.01)附:回归直线的斜率和截距的最小二乘估计公式分别为.()()()121ˆˆˆ,niii ni i x x y y bay bx x x ==---==--∑∑21.(本小题12.0分)已知函数()11x f x eax a -=-+-.(1)讨论函数()f x 的单调性;(2)①若()0f x ≥恒成立,求实数a 的取值集合;②证明.()ln 20xe x -+>22.(本小题10.0分)在极坐标系中,点P 的极坐标是()1,π,曲线C 的极坐标方程为22cos 80ρρθ--=,以极点为坐标原点,极轴为x 轴的正半轴建立平面直角坐标系,斜率为-1的直线l 经过点P .(1)写出直线l 的参数方程和曲线C 的直角坐标方程;(2)若直线l 和曲线C 相交于两点,A B ,求PA PB PBPA+的值.答案和解析1.【正确答案】B解:集合{}{}{}22002,0,1A xx x x x B =-≤=≤≤=∣∣,则{}0,1A B ⋂=.2.【正确答案】A解.()()()()223i 1i 3i 33i i i 42i 2i 1i 1i 1i 1i 2z +-+-+--=====-++--则复数3i1iz +=+在复平面内表示的点的坐标为()2,1-.3.【正确答案】D解:根据题意,函数()3,0,ln ,0,x e x f x x x +⎧≤=⎨>⎩,则()210f e -=>,则()21ln 2ln 2f f e e ⎡⎤-===⎣⎦,4.【正确答案】D解:圆2cos ρθ=-即22cos ρρθ=-,即2220x y x ++=,即22(1)1x y ++=,表示以()1,0-为圆心,半径等于1的圆.而点()1,0-的极坐标为()1,π,5.【正确答案】A解:函数()323f x x x =+是奇函数,且在定义域内是增函数,A 正确;函数()5tan f x x =在定义域内不具有单调性,B 错误;函数()8f x x=-在定义域内不具有单调性,C 错误;函数()f x x =+[)0,∞+,不具有奇偶性,D 错误;综上,应选A .6.【正确答案】C解:模拟程序的运行,可得1a =执行循环体,3a =不满足条件10a >,执行循环体,7a =不满足条件10a >,执行循环体,15a =满足条件10a >,退出循环,输出a 的值为15.故选.C 7.【正确答案】B【分析】采用采用间接法,任意选有4615C =种,都是男生有1种,进而可得结果.【详解】任意选有4615C =种,都是男生有1种,则至少有一名女生有14种.故本题选B .8.【正确答案】B由决定系数2R 来刻画回归效果,2R 的值越大越接近1,说明模型的拟合效果最好.故选.B 9.【正确答案】C【分析】利用赋值法结合条件即得.【详解】因为443243210(1)x a x a x a x a x a -=++++,令0x =得,01a =,令1x =-得,443210(2)16a a a a a -+-+=-=,所以,432116115a a a a -+-=-=.故选:C.10.【正确答案】D解:当0x >时,ln ,1ln y x x y x ==+',即10x e <<时,函数y 单调递减,当1x e>,函数y 单调递增,又因为函数y 为偶函数,故排除ABC ,故选.D 11.【正确答案】D解:因为()3224f x x x x =--+,所以()2344f x x x =--+',令()0f x '=得23x =或2x =-,可知函数()f x 在[)3,2--上单调递减,在22,3⎛⎫- ⎪⎝⎭上单调递增,在2,33⎛⎤ ⎥⎝⎦上单调递减,而()()()24033,28,,333327f f f f ⎛⎫-=--=-==-⎪⎝⎭,所以函数()f x 在[]3,3-上的最小值为-33,因为当[]3,3x ∈-时,()214f x m m ≥-恒成立,只需2min 14()m m f x -≤,即21433m m -≤-,即214330m m -+≤,解得311m ≤≤.故选D .12.【正确答案】C【分析】利用求导法则求出()f x ',即可知道()()f x f x '='-,再利用()()2f x f x +-=,即可求解.【详解】由已知得()()2222(1)sin (1)sin 11x x x xf x x x -+----==++,则()()2222(1)sin (1)sin 211x x x xf x f x x x ++--+-=+=++,()()()()222221cos 12(1)sin 1x x x x x x f x x'⎡⎤⎡⎤+++-++⎣⎦⎣⎦=+()()()2222cos 12sin 1x x x xx ++-=+则()()()()2222cos 12sin 1x x x xf x x++--=+',即()()f x f x '='-,则()()()()2022202220222022f f f f ++-''--()()()()20222022202220222f f f f =+-+'-'-=,故选:C.13.【正确答案】2i --解:复数()i 12i 2i z =+=-+,其共轭复数为2i --.14.【正确答案】-252【分析】应用二项式定理写出第6项系数.【详解】由101011010C (1)(1)C rrr r r rr T xx --+=-=-,所以,第6项为5r =,则5555610(1)252T C x x =-=-,故第6项系数是-252.故-25215.【正确答案】乙解:假设甲会,那么甲、乙说的都是真话,与题意不符,所以甲不会;假设乙会,那么甲、乙说的都是假话,丙说的真话,符合题意;假设丙会,那么乙、丙说的都是真话,与题意不符,所以丙不会.综上可得:会中国象棋的是乙,16.【正确答案】-1【分析】先由ln ax b x +≥恒成立得出ln 1b a ≥--,进而ln 1b a a a--≥,构造函数()ln 1(0)a g a a a--=>求解.【详解】设()ln (0)f x x ax b x =-->,则不等式ln ax b x +≥恒成立等价于max ()0f x ≤成立,显然当0a ≤时不符合题意.当0a >时,()11(0)ax f x a x x x-=-=>',∴当10x a <<时,()0f x >,当1x a >时,()0f x '<,则()f x 在10,a ⎛⎫ ⎪⎝⎭上单调递增,在1,a ∞⎛⎫+⎪⎝⎭上单调递减,max 1()ln 1f x f a b a ⎛⎫∴==--- ⎪⎝⎭.由max ()0f x ≤得ln 1ln 1,b a b a a a --≥--∴≥.令()ln 1(0)a g a a a --=>,则()2ln ag a a=',当01a <<时,()()0,g a g a '<在()0,1上单调递减,当1a >时,()()0,g a g a '>在()1,∞+上单调递增,()min ()11g a g ∴==-,1ba ∴≥-,则min1b a ⎛⎫=- ⎪⎝⎭,此时1,1a b ==-.故-1.17.【正确答案】解:(1)由2x x y =⎧⎪⎨=⎪'⎩'得到2x x y ⎧=⎪⎪⎨'⎪=⎪⎩,代入到221x y +=中,得22()()143x y +=.即22143x y +=为曲线C '的直角坐标方程;(2)设()2cos P θθ,则点P到直线60l y +-=的距离为d ==其中255tan 2sin 55ϕϕϕ⎛=== ⎝⎭,当()sin 1θϕ+=时,即()22k k Z πθϕπ+=+∈,于是()sin sin 2cos 25k k Z πθπϕϕ⎛⎫=+-==∈ ⎪⎝⎭,同理25cos sin 5θϕ==,此时6152d =,即距离最小值为6152,此时点4515,55P ⎛ ⎝⎭.18.【正确答案】解:(1)已知函数()322f x x ax bx a =+++在1x =-处取得极大值1,()234f x x ax b =+'+ ,且函数()f x 在1x =-处有极值1,()()13401120f a b f a b a ⎧-=-+=⎪∴⎨-=-+-+='⎪⎩,解得1;1a b =⎧⎨=⎩又当1a b ==时,()()21341313f x x x x x ⎛⎫=++=++ ⎪⎝⎭',()f x ∴在(),1∞--和1,3∞⎛⎫-+ ⎪⎝⎭上单调递增,在11,3⎛⎫-- ⎪⎝⎭单调递减,故()f x 在1x =-处取得极大值,满足题意;综上,1a b ==;(2)当1,1a b ==时,()3221f x x x x =+++,则()()21341313f x x x x x ⎛⎫=++=++ ⎪⎝⎭',当x 变化时,()f x '与()f x 的变化情况如下表:x -111,3⎛⎫-- ⎪⎝⎭13-1,13⎛⎫- ⎪⎝⎭1()f x '-0+()f x 1单调递减极小值2327单调递增5所以[]1,1x ∈-时,()f x 的最大值为5.19.【正确答案】解:(1)X 可取162,163,164,165,166,()()()214163162,163,16420102052010P X P X P X =========,()()513165,16620420P X P X =====,所以分布列为:X162163164165166P 1101531014320(2)设Y 表示每天的利润,当162X =时,162502108080Y =⨯-⨯=,当163X =时,16350108140Y =⨯-=,当164X =时,164508200Y =⨯=,当165X =时,16450208220Y =⨯+=,当166X =时,164502208240Y =⨯+⨯=,所以平均利润为1131380808140820082208240818710510420⨯+⨯+⨯+⨯+⨯=(元).20.【正确答案】解:(1)选择模型①,理由如下:根据残差图可以看出,模型①残差对应点分布在以横轴为对称轴,宽度小于1的水平带状区域内,模型①的各项残差的绝对值要远远小于模型②的各项残差的绝对值,所以模型①的拟合效果相对较好.(2)由(1)知,y 关于x 的回归方程为2ˆˆˆy bx a =+,令2t x =,则ˆˆˆy bt a =+.由所给数据可得8111(1491625364964)25.588i i t t ===⨯+++++++=∑,8111(0.40.8 1.6 3.1 5.17.19.712.2)588i i y y ===⨯+++++++=∑,则()()()81821686.8ˆ0.193570i i i i i t t y y b t t ==--==≈-∑∑,ˆˆ50.1925.50.16ay bt =-≈-⨯≈.所以y 关于x 的回归方程为2ˆ0.190.16yx =+.预测该地区2020年新增光伏装机量为2ˆ0.19100.1619.16y=⨯+=(兆瓦).21.【正确答案】解:(1)因为()11x f x e ax a -=-+-,所以()1x f x e a -=-',①当0a ≤时,()0f x '>,函数()f x 在区间R 上单调递增;②当0a >时,令()0,ln 1f x x a >>+',令()0,ln 1f x x a <<+',所以()f x 在(),ln 1a ∞-+上单调递减,在()ln 1,a ∞++上单调递增.(2)①由(1)可得当0a ≤,函数()f x 在区间R 上单调递增,又()0110f e a a =-+-=,所以1x <,则()0f x <,与条件矛盾,当0a >时,()f x 在(),ln 1a ∞-+上单调递减,在()ln 1,a ∞++上单调递增,所以()()ln 1f x f a ≥+,由已知()ln 10f a +≥,所以aln 10a a --≥,设()ln 1g x x x x =--,则()1ln 1ln g x x x =--=-',所以当()0,1x ∈时,()0g x '>,函数()ln 1g x x x x =--单调递增,()1,x ∞∈+时,()0g x '<,函数()ln 1g x x x x =--单调递减,又()11ln110g =--=,所以不等式ln 10a a a --≥的解集为{}1.②证明:设()()1ln 2h x x x =+-+,则()11122x h x x x +=-=++',当()2,1x ∈--时,()0h x '<,函数()()1ln 2h x x x =+-+单调递减,()1,x ∞∈-+时,()0g x '>,函数()()1ln 2h x x x =+-+单调递增,又()10ln10h -=-=,所以()1ln 20x x +-+≥,当且仅当1x =-时取等号,由(1)1x e x ≥+,当且仅当0x =时取等号,所以()ln 20xe x -+>.22.【正确答案】解:(1)点P 的直角坐标是()1,0-,直线l 的倾斜角是34π,∴直线l 的参数方程为21222x t y t ⎧=--⎪⎪⎨⎪=⎪⎩,(t 为参数),由直角坐标与极坐标互化公式得曲线C 的直角坐标方程为22(1)9x y -+=.(2)将1222x t y t ⎧=--⎪⎪⎨⎪=⎪⎩代入22(1)9x y -+=,得250t +-=,设,A B 对应参数分别为12,t t,则12125t t t t +==-,根据直线参数方程t 的几何意义得:()()2222221212121212||2251855PA PB t t t t PAPBt t PB PA PA PB t t t t ++--⨯-++=====⋅⋅⋅-.。
四川省成都外国语学校2021-2022学年高一上学期12月月考物理试题

成都外国语学校2021-2022学年度上期12月月考高一物理试卷命题人:彭华丽审题人:唐永萍注意事项:1、本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分;2、本次考试90分钟,满分100分;3、答题前,考生务必先将自己的姓名、学号填写在答题卡上,并使用2B铅笔填涂;4、考试结束后,将答题卡交回。
第Ⅰ卷(选择题,共40分)一.单项选择题(共8小题,满分24分,每小题3分,每道题只有一个正确选项)1.物体具有保持原来匀速直线运动状态或静止状态的性质称为惯性。
下列有关惯性的说法中,正确的是()A.乘坐汽车时系好安全带可减小惯性B.运动员跑得越快惯性越大C.汽车在刹车时才有惯性D.宇宙飞船在太空中也有惯性2.从地面竖直上抛一物体A,同时在离地面某一高度处有一物体B自由下落,两物体在空中同时到达同一高度时速度大小均为v,则下列说法正确的是()A.A上抛的初速度与B落地时速度大小不相等B.两物体在空中运动的时间相等C.两物体在空中同时达到的同一高度处一定是B开始下落时高度的中点D.A上升的最大高度与B开始下落时的高度相同3.如图所示,A、B、C三物块叠放并处于静止状态,水平地面光滑,其它接触面粗糙,则()A.A与墙面间存在压力B.A与墙面间可能存在静摩擦力C.A物块共受4个力作用D.B物块共受4个力作用4.如图所示的位移—时间和速度—时间图象中,给出的四条曲线1、2、3、4代表四个不同物体的运动情况。
下列描述正确的是()A.图线1表示物体做曲线运动B.x-t图像中t1时刻v1>v2C.v-t图像中0至t3时间内3和4的平均速度大小相等D.v-t图像中,从t4时刻起,物体4向相反方向运动5.如图所示,小车沿水平面做直线运动,小车内光滑底面上有一物块被压缩的弹簧压向左壁,小车向右加速运动。
若小车向右加速度增大,则车左壁受物块的压力F1和车右壁受弹簧的压力F2的大小变化是( )A.F1不变,F2变大B.F1变大,F2不变C.F1、F2都变大D.F1变大,F2减小6.如图所示,A、B、C三球的质量均为m,轻质弹簧一端固定在斜面顶端、另一端与A球相连,A、B间由一轻质细线连接,B、C间由一轻杆相连.倾角为θ的光滑斜面固定在地面上,弹簧、细线与轻杆均平行于斜面,初始系统处于静止状态,细线被烧断的瞬间,下列说法正确的是( )A.A球的加速度沿斜面向上,大小为gsin θB.C球的受力情况未变,加速度为0C.B、C两球的加速度均沿斜面向下,大小均为2gsin θD.B、C之间杆的弹力大小为07.如图所示,一根轻绳一端固定于竖直墙上的A点,另一端绕过动滑轮P悬挂一重物B,其中P与A之间的绳子处于水平状态;另一根绳子一端与动滑轮P的轴相连,绕过光滑的定滑轮Q后在其端点O施加一水平向左的拉力F,使整个系统处于平衡状态。
四川省成都市成都外国语学校2023-2024学年高二下学期4月期中考试数学试题

四川省成都市成都外国语学校2023-2024学年高二下学期4月期中考试数学试题学校:___________姓名:___________班级:___________考号:___________一、单选题1.已知等比数列{}n a 的各项均为正数,若482,6a a ==,则6a =( )A .4 B.CD.2.下列各式中正确的是( )A .()1log a x x '= B .()ln log a ax x '=C .()133x x x -'=⋅D .()l 3n 33x x ⋅'=3.在数列{}n a 中,若11a =-,()1121n n a n a -=≥-,则2024a =( )A .2B .1-C .12 D .14.已知函数()()2131ln 2f x f x x x ='-++(()f x '是()f x 的导函数),则()1f =()A .1B .2C .12 D .12-5.已知11a =,()()1n n n a n a a n ++=-∈N ,则数列{}n a 的通项公式是n a =( )A .21n -B .11n n n ++⎛⎫⎪⎝⎭ C .2n D .n6.函数()21e x x f x -=的图象大致为( )A .B .C .D .7.已知ln 21ln 3,,2e 3a b c ===,则a ,b ,c 大小关系为( )A .a b c >>B .a c b >>C .b a c >>D .b c a >>8.若函数cos a xy x +=在区间()0,π上单调递增,则实数a 的取值范围是( )A .π,2⎡⎫-+∞⎪⎢⎣⎭ B .π,2⎛⎤-∞- ⎥⎝⎦C .(,1]-∞-D .[1,)-+∞二、多选题9.已知定义域为[]3,5-的函数()f x 的导函数为()f x ',且()f x '的图象如图所示,则()A .函数()f x 在区间()0,3上单调递增B .函数()f x 在()2,2-上单调递减C .函数()f x 在2x =处取得极小值D .函数()f x 在3x =处取得极大值 10.已知无穷等差数列{}n a 的前n 项和为n S ,67S S <,78S S >,则( )A .在数列{}n a 中,1a 最大B .在数列{}n a 中,3a 或4a 最大C .310S S <D .当8n ≥时,0n a <11.关于函数2()ln f x x x =+,下列判断正确的是( )A .()f x 的极大值点是2x =B .函数()y f x x =-在(1,2)上有唯一零点C .存在实数0k >,使得()f x kx >成立D .对任意两个正实数12,x x ,且12x x >,若()()12f x f x =,则124x x +>三、填空题12.设函数()f x 在1x =处存在导数为3,则()()Δ01Δ1lim 3Δx f x f x →+-=13.数列{}n a 的各项都是正数,12a =,2212n n a a +=+,那么此数列的通项公式为n a = . 14.若函数()e ln 1x f x x x x a =--+-有两个零点,则实数a 的取值范围为 .四、解答题15.等差数列{}n a 中,11a =,632a a =.(1)求{}n a 的通项公式;(2)设3n n a b =,记n S 为数列{}n b 前n 项的和,若39m S =,求m .16.已知曲线()3213y f x x a x ==-+⋅在点()()1,1f 处的切线的斜率为1. (1)求实数a 的值;(2)求函数()f x 的单调区间与极值.17.已知数列{}n a 中,n S 为{}n a 的前n 项和,233n n S a =-.(1)求数列{}n a 的通项公式;(2)令133121(1)log log n n n n n b a a +++=-⋅,求数列{}n b 的前n 项和n T . 18.已知函数()()11ln f x ax a x x=+--. (1)当0a =时,求()f x 在1,22⎡⎤⎢⎥⎣⎦上的最值;(提示:ln 20.69≈) (2)讨论()f x 的单调性.19.已知函数()()2ln 3f x x x ax x a =--∈R .(1)若1x =是函数()f x 的一个极值点,求实数a 的值;(2)若函数()f x 有两个极值点12,x x ,其中12x x <,①求实数a 的取值范围;②若不等式122ln 31ax k x k +>+恒成立,求实数k 的取值范围.。
四川省成都外国语学校2016-2017学年高一下期期末考试数学(理)试题 Word版含答案

四川省成都外国语学校2016-2017学年高一下期期末考试数学(理)试题 Word版含答案1.直线 $xcos\theta+ysin\theta+a=0$ 和 $xsin\theta-ycos\theta+b=0$ 的位置关系是()A。
平行 B。
垂直 C。
重合 D。
与 $a,b,\theta$ 的值有关2.若 $a,b\in R$,且 $ab>0$,则下列不等式中,恒成立的是()A。
$a+b>2ab$ B。
$\frac{2}{\sqrt{2}}\sqrt{ab}\leq a+b$ C。
$a+\frac{1}{b}\geq 2$ D。
$a+\frac{1}{b}\geq 2\sqrt{ab}$3.一个空间几何体的三视图如图所示,则该几何体的体积为A。
$\frac{2\pi}{3}$ B。
$\frac{4\pi}{3}$ C。
$2\pi+\frac{2}{3}$ D。
$4\pi+\frac{2}{3}$4.在 $\triangle ABC$ 中,若 $\sin(A-B)=1+2\cos(B+C)\sin(A+C)$,则 $\triangle ABC$ 的形状一定是A。
等边三角形 B。
不含 $60^\circ$ 的等腰三角形 C。
钝角三角形 D。
直角三角形5.设 $a,b$ 是空间中不同的直线,$\alpha,\beta$ 是不同的平面,则下列说法正确的是A。
$a//b,b\perp\alpha$,则 $a\perp\alpha$ B。
$a\perp\alpha,b\perp\beta,\alpha//\beta$,则 $a//b$ C。
$a\perp\alpha,b\perp\beta,a//\beta,b//\beta$,则$\alpha//\beta$ D。
$\alpha//\beta,a\perp\alpha$,则 $a//\beta$6.设数列 $\{a_n\}$ 是首项为 $m$,公比为 $q(q\neq 1)$ 的等比数列,它的前 $n$ 项和为 $S_n$,对任意 $n\in N^*$,点$(a,S_{2n})$ 位于A。
四川省成都外国语学校2017_2018学年高二数学下学期期末考试试题理

成都外国语学校2017-2018高二(下)期末考试数学试题(理工类)满分:150分,时间:120分钟一、选择题:本题共12小题,每小题5分,共60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. 已知集合{}|1 2 A x x =-<<,{}2|20 B x x x =+≤,则A B =( )A. {}|0 2 x x <<B. {}|0 2 x x ≤<C. {}|10 x x -<<D. {}|10 x x -<≤2.若复数201824(1)2i z i i =+-+,复数z 在复平面内对应的点位于( ) A .第一象限 B .第二象限 C .第三象限 D .第四象限3. 已知双曲线2221x y -=的一个焦点为F ,则焦点F 到其中一条渐近线的距离为( )A. 2B. 1124. 设函数()(1)x f x x e =+,则(1)f '=( )A. 1B. 2C. 3e +D. 3e5. 秦九韶是我国南宋时期的数学家,普州(现四川省安岳县)人,他在所著的《数书九章》中提出的多项式求值的秦九韶算法,至今仍是比较先进的算法.如图所示的程序框图给出了利用秦九韶算法求多项式值的一个实例,若输入x n ,的值分别为3,2则输出v 的值为( )A. 35B.20C. 18D. 96.已知直线310x y -+=的倾斜角为α,则1sin 22α=( ) A. 310 B. 35 C. 310- D. 1107. 已知二项式91()2x ax +的展开式中3x 的系数为212-,则()1e a x dx x +⎰的值为( ) A .212e + B . 232e - C. 232e + D .252e - 8.设5sin π=a ,3log 2=b ,3241⎪⎭⎫ ⎝⎛=c ,则( )A.b c a <<B. c a b <<C. b a c <<D. a b c <<9.定义域为R 的奇函数()y f x =的图像关于直线2x =对称,且(2)2018f =,则(2018)(2016)f f +=( )A. 2018B. 2020C. 4034D. 210.已知三棱锥ABC D -四个顶点均在半径为R 的球面上,且22===AC BC AB ,,若该三棱锥体积的最大值为1,则这个球的表面积为( ) A.81500π B. π4 C. 925π D.9100π 11.已知椭圆22221(0)x y a b a b+=>>的左、右焦点分別为12,F F ,过2F 的直线与椭圆交于,A B 两点,若1F AB ∆是以A 为直角项点的等腰直角三角形,则椭圆的离心率为( )A.2B.22 D- 12. 已知函数()ln 2f x x x x a =-+,若函数()y f x =与(())y f f x =有相同的值域,则a 的取值范围是( )A .1(,1]2B .(,1]-∞C .3[1,)2D .[1,)+∞二、填空题:本题共4小题,每小题5分,共20分。
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四川省成都外国语学校2016-2017学年高二下学期期中考试试卷注意事项:1.本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分;2.本堂考试100分钟,满分100分;3.答题前,考生务必先将自己的姓名、考号填写在答题卡上,并使用2B铅笔填涂;4.考试结束后,将答题卡交回.第Ⅰ卷选择题部分一、选择题(本题共13个小题,每小题有一个或多个符合题意的选项,请你将正确选项填涂在答题卡上相应位置,选对不全得2分,全部选对得3分,不选或错选不得分)1.在法拉第时代,下列验证“由磁产生电”设想的实验中,能观察到感应电流的是() A.将绕在磁铁上的线圈与电流表组成一闭合回路,然后观察电流表的变化B.在一通电线圈旁放置一连有电流表的闭合线圈,然后观察电流表的变化C.将一房间内的线圈两端与相邻房间的电流表连接,往线圈中插入条形磁铁后,再到相邻房间去观察电流表的变化D.绕在同一铁环上的两个线圈,分别接电源和电流表,在给线圈通电或断电的瞬间,观察电流表的变化2.有一种自行车,它有能向自行车车头灯泡供电的小型发电机,其原理示意图如图甲所示;图中N、S是一对固定的磁极,磁极间有一固定在绝缘转轴上的矩形线圈,转轴的一端有一个与自行车后轮边缘接触的摩擦轮。
如图乙所示,当车轮转动时,因摩擦而带动摩擦轮转动,从而使线圈在磁场中转动而产生电流给车头灯泡供电。
关于此装置,下列说法正确的是()A.自行车匀速行驶时线圈中产生的是直流电B.小灯泡亮度与自行车的行驶速度无关C .知道摩擦轮和后轮的半径,就可以知道后轮转一周的时间里摩擦轮转动的圈数D .线圈匝数越多,穿过线圈的磁通量的变化率越大3.如图甲所示,一单匝圆形闭合导线框半径为r ,线框电阻为R ,连接一交流电流表(内阻不计)。
线框内充满匀强磁场,已知该磁场磁感应强度B 随时间按正弦规律变化,如图乙所示(规定向下为B 的正方向),则下列说法正确的是( )A .0.005 s 时线框中的感应电流最大B .0.01 s 时线框中感应电流方向从上往下看为逆时针方向C .0.015 s 时电流表的示数为零D .0~0.02 s 内闭合导线框上产生的热量为π4r 4R4.如图所示,变压器输入有效值恒定的电压,副线圈匝数可调,输出电压通过输电线送给用户(电灯等用电器),R 表示输电线的电阻,则( )A .用电器增加时,变压器输出电压增大B .要提高用户的电压,滑动触头P 应向上滑C .用电器增加时,输电线的热损耗减少D .用电器增加时,变压器的输入功率减小5.如图所示为物理实验室某风扇的风速挡位变换器电路图,它是一个可调压的理想变压器,其中接入交流电的电压有效值U 0=220 V ,n 0=2 200匝,挡位1、2、3、4对应的线圈匝数分别为220匝、550匝、1 100匝、2 200匝。
电动机M 的内阻r =4 Ω,额定电压为U =220 V ,额定功率P =110 W 。
下列判断正确的是( )A.当选择挡位3时,电动机两端电压为110 VB.当挡位由3变换到2时,电动机的功率增大C.当选择挡位2时,电动机的热功率为1 WD.当选择挡位4时,电动机的输出功率为110 W6.一个单摆在地面上做受迫振动,其共振曲线(振幅A与驱动力频率f的关系)如图所示,则()A.此单摆的固有周期约为0.5 sB.此单摆的摆长约为1 mC.若摆长增大,单摆的固有频率增大D.若摆长增大,共振曲线的峰将向右移动7.如图甲所示为以O点为平衡位置,在A、B两点间做简谐运动的弹簧振子,图乙为这个弹簧振子的振动图像,由图可知下列说法中正确的是()A.在t=0.2 s时,弹簧振子的加速度为正向最大B.在t=0.1 s与t=0.3 s两个时刻,弹簧振子在同一位置C.在t=0到t=0.2 s时间内,弹簧振子做加速度增大的减速运动D.在t=0.6 s时,弹簧振子有最小的弹性势能8.在均匀介质中,一列沿x 轴正向传播的横波,其波源O 在第一个周期内的振动图象如右下图所示,则该波在第一个周期末的波形图是( )9.在xOy 平面内有一列沿x 轴正方向传播的简谐横波,波速为2 m/s ,振幅为A 。
M 、N 是平衡位置相距2 m 的两个质点,如图所示。
在t =0时,M 通过其平衡位置沿y 轴正方向运动,N 位于其平衡位置上方最大位移处。
已知该波的周期大于1 s 。
则( )A .该波的周期为53s B .在t =13s 时,N 的速度一定为2 m/s C .从t =0到t =1 s ,M 向右移动了2 mD .从t =13 s 到t =23s ,M 的动能逐渐增大 10.图甲为一列简谐横波在t =0.10 s 时刻的波形图,P 是平衡位置在x =1.0 m 处的质点,Q是平衡位置在x=4.0 m处的质点;图乙为质点Q的振动图象,振动周期为0.2 s,下列说法正确的是()A.在t=0.10 s时,质点Q向y轴正方向运动B.在t=0.25 s时,质点P的加速度方向与y轴正方向相同C.从t=0.10 s到t=0.25 s,质点P通过的路程为30 cmD.质点Q简谐运动的表达式为y=0.10sin10πt(国际单位制)11.如图所示,E为电池,L是电阻可忽略不计、自感系数足够大的线圈,D1、D2是两个规格相同的灯泡,S是控制电路的开关.对于这个电路,下列说法错误的是()A.刚闭合S的瞬间,通过D1、D2的电流大小相等B.刚闭合S的瞬间,通过D1、D2的电流大小不相等C.闭合S待电路达到稳定,D1熄灭,D2比原来更亮D.闭合S待电路达到稳定,再将S断开瞬间,D2立即熄灭,D1闪亮一下再熄灭12.两根足够长的光滑导轨竖直放置,间距为L,底端接阻值为R的电阻。
将质量为m的金属棒悬挂在一个固定的轻弹簧下端,金属棒与导轨接触良好,导轨所在平面与磁感应强度为B的匀强磁场垂直,如图所示。
除电阻R外其余电阻不计。
现将金属棒从弹簧原长位置由静止释放,则()A .释放瞬间金属棒的加速度等于重力加速度gB .金属棒向下运动时,流过电阻R 的电流方向为a →bC .金属棒的速度为v 时,所受的安培力大小为F =B 2L 2v RD .电阻R 上产生的热量等于金属棒重力势能的减少量13.为了测量某化工厂的污水排放量,技术人员在该厂的排污管末端安装了如图所示的流量计,该装置由绝缘材料制成,长、宽、高分别为a =1 m 、b =0.2 m 、c =0.2 m ,左、右两端开口,在垂直于前、后面的方向加磁感应强度为B =1.25 T 的匀强磁场,在上、下两个面的内侧固定有金属板M 、N 作为电极,污水充满装置以某一速度从左向右匀速流经该装置时,测得两个电极间的电压U =1 V 。
且污水流过该装置时受到阻力作用,阻力f =kLv ,其中比例系数k =15 N·s/m 2,L 为污水沿流速方向的长度,v 为污水的流速。
下列说法中正确的是( )A .金属板M 电势不一定高于金属板N 的电势B .污水中离子浓度的高低对电压表的示数也有一定影响C .污水的流量(单位时间内流出的污水体积)Q =0.16 m 3/sD .为使污水匀速通过该装置,左、右两侧管口应施加的压强差为Δp =1500 Pa第Ⅱ卷(非选择题 共61分)注意事项:1.答题前,考生先在答题卡上用直径0.5毫米的黑色墨水签字笔将自己的姓名,准考证号填写清楚。
2.请用直径0.5毫米黑色墨水签字笔在答题卡上各题的答题区域内....................作答,在试卷上作答无效.。
二、实验探究题:本题共2小题,共16分14.(8分)在“利用单摆测定重力加速度”的实验中,只要测出多组单摆的摆长l和运动周期T,作出T2-l图象,就可以求出当地的重力加速度。
某同学根据实验数据作出的图象如图甲所示。
(1)由图象求出的重力加速度g = ___m/s2。
(取π2=9.87,结果保留三位有效数字)(2)理论上T2-l图象应是一条过坐标原点的直线,造成图象不过坐标点的原因可能是_________。
A.以摆线长代替摆长(漏了小球半径)B.以摆线长+小球直径代替摆长(多加了小球半径)(3)用游标为50分度的游标卡尺测小球的直径时应选择测脚__________(填图中的A或B);(4)游标卡尺示数如图乙所示,由图读出小球的直径为_____________mm。
15.(8分)某同学要用电阻箱和电压表测量某水果电池组的电动势和内阻,考虑到水果电池组的内阻较大,为了提高实验的精度,需要测量电压表的内阻。
实验室中恰好有一块零刻度在中央的双向电压表,该同学便充分利用这块表,设计了如图所示的实验电路,既能实现对该电压表的内阻的测量,又能利用该表完成水果电池组电动势和内阻的测量。
他用到的实验器材有:待测水果电池组(电动势约4 V,内阻约50 Ω)、双向电压表(量程为2 V,内阻约为2 kΩ)、电阻箱(0~9999 Ω)、滑动变阻器(0~200 Ω)、一个单刀双掷开关及若干导线。
(1)该同学按如图所示电路图连线后,首先利用半偏法测出了电压表的内阻。
请完善测量电压表内阻的实验步骤:①将R2的滑片滑至最左端,将S拨向1位置,将电阻箱R1阻值调为0;②调节R2的滑片,使电压表示数达到满偏;③保持________不变,调节R1,使电压表的示数达到________;④读出电阻箱的阻值,记为R1,则电压表的内阻R V=________。
(2)若测得电压表内阻为2 kΩ,可分析此测量值应________真实值。
(填“大于”“等于”或“小于”)(3)接下来测量电源电动势和内阻,实验步骤如下:①将开关S拨至________(填“1”或者“2”)位置,将R2的滑片移到最________端,不再移动;②调节电阻箱的阻值,使电压表的示数达到一合适值,记录电压表的示数和电阻箱的阻值;③重复第二步,记录多组电压表的示数和对应的电阻箱的阻值。
(4)若将电阻箱与电压表并联后的阻值记录为R,作出1R-1U图象。
则可消除系统误差,如图所示,其中横轴截距为b,斜率为k,则电动势为________,内阻为________。
三、计算题:本题共4个小题,共45分。
解答应写出必要的文字说明、方程式和重要演算步骤,只写出最后答案的不能得分,有数值运算的题,答案中必须明确写出数值和单位。
16.(10分)如图,两平行金属导轨位于同一水平面上,相距l,左端与一电阻R相连;整个系统置于匀强磁场中,磁感应强度大小为B,方向竖直向下。
一质量为m的导体棒置于导轨上,在水平外力作用下沿导轨以速率v匀速向右滑动,滑动过程中始终保持与导轨垂直并接触良好。
已知导体棒与导轨间的动摩擦因数为μ,重力加速度大小为g,导轨和导体棒的电阻均可忽略。
求(1)电阻R消耗的功率;(2)水平外力的大小。