2020年重庆一中高2020级高三上期期末考试 (1)

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重庆市第一中学2020届高三上学期期末考试+理科综合+Word版

重庆市第一中学2020届高三上学期期末考试+理科综合+Word版

秘密★启用前【考试时间:2020年1月20日 9:00-11:30 】2020年重庆一中高2020级高三上期期末考试理科综合测试试题卷注意事项:1.答卷前,考生务必将自己的姓名、准考证号码填写在答题卡上。

2.作答时,务必将答案写在答题卡上。

写在本试卷及草稿纸上无效。

3.考试结束后,将答题卡交回。

可能用到的相对原子质量:H-1 C-12 N-14 O-16 S-32一、选择题:本题共13小题,每小题6分,共78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.下列有关细胞内结构的说法正确的是A.无丝分裂过程中细胞核与细胞质缢裂是不同步的B.各种细胞内核糖体的形成都与核仁有关C.细胞膜上的糖被只与细胞间识别有关D.生物膜是生物体内所有膜结构的统称2.下列关于人体细胞生命历程的叙述错误的是A.胎儿手的发育过程会发生细胞凋亡B.自由基会攻击蛋白质,使蛋白质活性下降,细胞随之逐渐衰老C.细胞内单一基因突变会导致细胞恶性增殖且易发生分散和转移D.细胞分化是基因在不同的时间和空间条件下选择性表达的结果3. 下列有关生物学实验的叙述,正确的是A. 低温诱导染色体数目加倍实验中,将大蒜根尖制成装片后再进行低温处理B.在“模拟性状分离比”实验中两个桶内的彩球总数一定要相等C. 杂交实验与测交实验的结果是孟德尔“提出问题”的实验基础D. 调查红绿色盲发病率,应该在人群中增加被调查人数,以减小误差4.下列关于神经系统及神经调节的叙述,错误的是A. 肾上腺素既是激素,又可以在某些突触中传递信息B.刺激某一反射弧的感受器或传出神经,可激发相同反射C. 大脑皮层言语区中,V区受损导致患者不能看懂文字D.“憋尿”能体现神经系统具有分级调节机制5.下列关于群落的叙述,正确的是A.人类活动对群落演替的影响往往是破坏性的B.土壤中小动物类群丰富研究中,蚯蚓一般采用目测估计法统计C.福建武夷山常绿阔叶林比西伯利亚泰梅尔半岛冻原物种更丰富D.重庆中央公园里银杏树高低错落分布,体现了群落的垂直结构6.某罕见单基因遗传病是由基因突变导致,以全身性发育迟缓、智力障碍为特征。

2020届重庆一中高三年级上学期期末考试理综物理答案

2020届重庆一中高三年级上学期期末考试理综物理答案

1 绝密★启用前
重庆市第一中学2020届高三年级上学期期末考试
理科综合试题
【考试时间:2020年1月20日 9:00-11:30 】
物理答案 题号 14 15 16 17 18 19 20 21 答案 B A D C B AD BD BCD
22.(6分)(1)0.4 (2)1 (3) 58
或者0.625 (每空2分) 23.(10分)(1)1.25 (2)a 2.50 2.2×
10-8 可能由于电流较大,实验过程中铜导线的温度明显超过了。

或者铜有杂质(每空2分)
24. (1)滑块从A 到B 的过程中设克服摩擦力做功为f W ,根据动能定理
2102f mgR W mv -=-(2分) 解得: 1.5J f W = (1分)
(2)设轨道对滑块压力为F,则小滑块在B 点时所受轨道支持力和重力的合力提供圆周运动的向心力
2
v F mg m R
-= (2分) 得 4.5N F = (1分)
由牛顿第三定律,滑块对轨道的压力' 4.5N F F == (1分)
(3)滑块离开B 后做平抛运动,设着地速度为'v ,有
'221122mgh mv mv =-
(2分) 得'52m/s v = (1分)。

2020届重庆市第一中学高三上学期期末考试理综物理试题解析

2020届重庆市第一中学高三上学期期末考试理综物理试题解析

2020届重庆市第一中学高三上学期期末考试理综物理试题(解析版)一.选择题(共8小题,1-5单选,6-8多选,每小题6分,少选3分,选错,多选0分,共48分) 1.下列说法正确的是( )A. α粒子散射实验的结果证明原子核是由质子和中子组成的B. 比结合能越大,原子核中的核子结合得越牢固,原子核越稳定C. 核力是短程力,其表现一定为吸引力D. 质子、中子、α粒子的质量分别为1m 、2m 、3m ,由2个质子和2个中子结合成一个α粒子,释放的能量是()2123m m m c +-答案:B解:A .α粒子散射实验的结果使卢瑟福根据它提出了原子的核式结构模型,故A 错误;B .比结合能是衡量原子核结构是否牢固的指标,它越大原子核中核子结合得越牢固,原子核越稳定;故B 正确;C .核力是短程力,其作用的范围是1510m -,其表现既有吸引力也有排斥力,故C 错误;D .2个质子和2个中子结合成1个α粒子,根据质能方程知:()2212322E mc m m m c ∆=∆=+-故D 错误。

故选B 。

2.在水平桌面上,一个圆形金属框置于匀强磁场中,线框平面与磁场垂直,磁感应强度B 1随时间t 的变化关系如图甲所示,0~1 s 内磁场方向垂直线框平面向下,圆形金属框与两根水平的平行金属导轨相连接,导轨上放置一根导体棒,且与导轨接触良好,导体棒处于另一匀强磁场B 2中,如图乙所示,导体棒始终保持静止,则其所受的摩擦力F f 随时间变化的图像是下图中的(设向右的方向为摩擦力的正方向) ( )A.B.C. D.答案:A解:根据题意可得:在0~1s内磁场方向垂直线框平面向下,且大小变大,则由楞次定律可得线圈感应电流的方向是逆时针,再由左手定则可得导体棒安培力方向水平向左,所以静摩擦力的方向是水平向右,即为正方向;而在0~1s内磁场方向垂直线框平面向下,且大小变大,则由法拉第电磁感应定律可得线圈感应电流的大小是恒定的,即导体棒的电流大小是不变的;再由:F BIL可得安培力大小随着磁场变化而变化,因为磁场是不变的,则安培力大小不变,所以静摩擦力的大小也是不变的。

重庆一中2020届高三上学期期末考试 英语试卷及答案

重庆一中2020届高三上学期期末考试 英语试卷及答案

秘密★启用前【考试时间:1月20日15:00—17:00】2020届重庆一中高三上期期末考试第二部分阅读理解(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。

ABy the end of the year, editors of New York Times have picked the 4 best books of 2019, including fiction and non-fiction. Let’s see which one will take your fancy.Disappearing EarthBy Julia PhillipsIn the first chapter of this novel, two young girls vanish, sending shock waves through a town on the edge of the remote and mysterious Kamchatka Peninsula. What follows is a novel of overlapping short stories about the different women who have been affected by their disappearance. Each tale pushes the narrative forward another month and exposes the ways in which the women of Kamchatka have been destroyed — personally, culturally and emotionally — by the crime.No Visible BruisesBy Rachel Louise SnyderSnyder’s thoroughly reported book covers what the World Health Organization has called “a global health problem”. In America alone, more than half of all murdered women are killed by a current or former life partner; domestic violence cuts across lines of class, religion and race. Snyder reveals pervasive myths (restraining orders are the answer, abusers never change) and writes movingly about the lives (and deaths) of people on both sides of the equation. She doesn’t give easy answers but presents a wealth of information that is its own form of hope.Midnight in ChernobylBy Adam HigginbothamHigginbotham’s superb account of the April 1986 explosion at the Chernobyl nuclear power plant is one of those rare books about science and technology that read like a tension-filled thriller. Filled with vivid detail and sharply etched personalities, this narrative of astonishing incompetence moves from mistake to mistake, miscalculation to miscalculation, as it builds to the inevitable, history-changing disaster.ExhalationBy Ted ChiangMany of the nine deeply beautiful stories in this collection explore the material consequences of time travel. Reading them feels like sitting at dinner with a friend who explains scientific theory to you with no airs and graces. Each thoughtful, elegantly crafted story poses a philosophical question; Chiang arranges all nine into a conversation that comes full circle, after having travelled through remarkable areas.21.Which of the following tells about the violence from a husband to a wife in a family?A. Disappearing EarthB. No Visible BruisesC. Midnight in ChernobylD. Exhalation22. How may readers feel when reading the book Midnight in Chernobyl?A. Delighted.B. Awkward.C. Tense.D. Calm.23. What kind of book is Exhalation?A. A folk tale.B. A biography.C. A love story.D. A sci-fi story.BOn a freezing December morning Matthew Warwick, then a 20-year-old college student, climbed on the edge of Waterloo Bridge in London. That morning, Matthew escaped from a mental health hospital, where he’d been diagnosed with schizo-affective disorder. He headed straight to the bridge, convinced that his disease was a life sentence.Hundreds of people passed by. Only one man called Alex Owen, then 25, calmly and quietly walked to Matthew’s side.“You’re alright, man? Why are you sitting on a bridge?”At first Matthew wan ted Alex to leave him alone, but something in Alex’s calm, down-to-earth manner struck a chord. Matthew felt faith, like he could talk to him.“It’s cold here. Why not have some coffee in a warm cafe? Everything will be OK.” For the first time after the diagnosis Matthew felt perhaps it really might. He climbed back.The police, having received calls from passers-by, were waiting there. They quickly put him into a police car, in case he was to panic and jump. He lost sight of Alex, the person who’d brought him hope.Matthew ended up back in hospital. Eventually, he was well enough to return to university and finish his degree. Over the next six years, Matthew often thought about the stranger who had talked him round. Eager to thank him in person, he posted a Facebook message nicknaming the good man Mike. His #Find Mike post was shared millions of times around the world, as far as Canada.Matthew was overexcited when Alex called him two weeks after his post. They had a reunion, finally having that coffee they had first planned all those years ago.“Many people walked past, but because of Alex’s kindness and sympathy, I’ve lived a good life.” Matthew said.24. Why did Matthew climb up the bridge?A. He was badly treated in the hospital.B. His disease made him lose hope.C. He wanted to draw people’s attention.D. He studied poorly in the college.25. What does the underlined phrase “struck a chord” in Paragraph 4 mean?A. Touched his heart.B. Drew his attention.C. Aroused his interest.D. Blew his mind.26. Which of the following best describes Alex?A. Diligent.B. Strong-willed.C. Caring.D. Generous.27. How did Matthew find Alex?A. By visiting homes door-to-door.B. By calling their friends.C. By asking the police.D. By posting a message online.CRobert F. Kennedy once said that a country’s GDP measures “everything except what makes lifeworthwhile.” With Britain voting to leave the European Union, and GDP already predicted to slow as a result, it is now a timely moment to assess what he was referring to.The question of GDP and its usefulness has annoyed policymakers for over half a century. Many argue that it is a mistaken concept. It measures things that do not matter and misses things that do. By most recent measures, the UK’s GDP has been the envy of the Western world, with record low unemployment and high growth figures. If everything was going so well, then why did over 17 million people vote for Brexit, despite the warnings about what it could do to their country’s economic prospects?A recent annual study of countries and their ability to convert growth into well-being throws some light on that question. Across the 163 countries measured, the UK is one of the poorest performers in ensuring that economic growth is translated into meaningful improvements for its citizens. Rather than just focusing on GDP, over 40 different sets of criteria from health, education and civil society engagement have been measured to get a more all-round assessment of how countries are performing.While all of these countries face their own challenges, there are a number of common themes. Yes, there has been an economic recovery since the 2008 global crash, but in key indicators in areas such as health and education, major economies have continued to decline. Yet this isn’t the case with all countries. Some relatively poor European countries have seen huge improvements across measures including civil society, income equality and environment.This is a lesson that rich countries can learn: When GDP is no longer regarded as the only measure of a country’s success, the world looks very different.So what Kennedy was referring to was that while GDP has been the most common method for measuring the economic activity of nations, as a measure, it is no longer enough. It does not include important factors such as environmental quality or education outcomes —all things that contribute to a person’s sense of well-being.28. Robert F. Kennedy is cited because he _______.A. praised the UK for its GDP.B. identified GDP with happiness.C. misinterpreted the role of GDP.D. had a low opinion of GDP.29. It can be inferred from Paragraph 2 that _______.A. the UK is unwilling to reshape its economic pattern.B. many people in the UK don’t think much of GDP as the measure of success.C. the UK will contribute less to the world economy.D. policymakers in the UK are paying less attention to GDP.30. Which of the following is true about the recent annual study?A. Its results are inspiring.B. It is sponsored by 163 countries.C. Its criteria are questionable.D. It removes GDP as an indicator.31. What is the author’s attitude towards GDP as the most common measure of a country’s success?A. Favorable.B. Indifferent.C. Critical.D. Defensive.DThis year marks exactly two centuries since the publication of Frankenstein by Mary Shelley. Even before the invention of the electric light bulb, the author produced a remarkable work of fiction that would foresee manyethical(道德的) questions to be raised by technologies yet to come. Today the rapid growth of artificial intelligence (AI) raises fundamental questions: “What is intelligence, identity, or consciousness? What makes human conscience(良知)?”What is being called artificial general intelligence, machines that would imitate the way humans think, continues to evade(难倒) scientists. Yet humans remain fascinated by the idea of robots that would look, move, and respond like humans, similar to those recently on popular sci-fi TV series such as “West World” and “Humans”.How people think is still far too complex to be understood, let alone reproduced, says David Eagleman, a Stanford University neuroscientist. “We are just in a situation where there are no good theor ies explaining what consciousness actually is and how you could ever build a machine to get there.”But that doesn’t mean essential ethical issues involving AI aren’t at hand. The coming use of autonomous vehicles, for example, raises difficult ethical questions. Human drivers sometimes must make split-second decisions. Their reactions may be a complex combination of instant reflections, input from past driving experiences, and what their eyes and ears tell them in that moment. AI “vision” today is not near ly as complicated as that of humans. And to foresee every imaginable driving situation is a difficult programming problem.Whenever decisions are based on masses of data, “you quickly get into a lot of ethical questions,” notes Tan Kiat How, chief executive of a Singapore-based agency that is helping the government develop a voluntary code for the ethical use of AI. Along with Singapore, other governments and mega-corporations are beginning to establish their own guidelines. Britain is setting up a data ethics center. India released its AI ethics strategy this spring.Only when we can make sure that the thinking of intelligent machines reflects humanity’s highest values will they be useful servants and not Frankenstein’s out-of-control monster.32. Why did the author mention Mary Shelley’s novel Frankenstein at the beginning of the passage?A. Because it has remained popular for as long as 200 years.B. Because it fascinates AI scientists all over the world.C. Because it has sparked serious ethical controversies.D. Because it involves some concerns raised by AI today.33. In David Eagleman’s opinion, our current knowledge of consciousness ________.A. helps explain artificial intelligence.B. can be misleading to robot making.C. inspires popular sci-fi TV series.D. is too limited for us to reproduce it.34. The solution to the ethical issues brought by autonomous vehicles ________.A. can hardly ever be found.B. is still beyond our power.C. causes little public concern.D. has aroused much curiosity.35. Which of the following would be the best title for the text?A. AI’s Future: In the Hands of Tech GiantsB. Frankenstein, the Novel Predicting the Age of AIC. The Conscience of AI: Complex But UnavoidableD. AI Shall Be Killers Once Out of Control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。

重庆市第一中学2020届高三数学上学期期末考试试题 理

重庆市第一中学2020届高三数学上学期期末考试试题 理

重庆市第一中学2020届高三数学上学期期末考试试题 理注意事项:1.答卷前,考生务必将自己的姓名、准考证号填写在答题卡上。

2.作答时,将答案写在答题卡上。

写在本试卷及草稿纸上无效。

3.考试结束后,将本试卷和答题卡一并交回。

第Ⅰ卷(共60分)一、选择题:本大题共12个小题,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,,则A .B .C .D .2.复数在复平面内对应的点为A .(1,1)--B .(1,1)-C .(1,1)-D .(1,1)3.已知向量(1,)(3,2)a m b =-,=,且()a b b +⊥,则A .6- B.6C.8D. 8-4.圆x 2+y 2-4x -6y +9=0的圆心到直线ax +y +1=0 的距离为2,则A.43-B.34-5. 现有5人站成一排照相,其中甲、乙相邻,且丙、丁不相邻,则不同的站法有 A .12 种 B .24 种 C .36 种 D .48 种 6.已知x =ln3,y =log 42,12z e-=,则A.x y z <<B.z x y <<C.z y x <<D.y z x <<7.(原创)《张丘建算经》是公元5世纪中国古代内容丰富的数学著作,书中卷上第二十三问:“今有女善织,日益功疾,初日织五尺,今一月织九匹三丈.问半月积几何?”其意思为“有个女子织布,每天比前一天多织相同量的布,第一天织五尺,一个月(按30天计)共织布9匹3丈.问:前半个月(按15天计)共织多少布?”已知1匹=4丈,1丈=10尺,可估算出前半个月一共织的布约有 A .195尺 B .133尺 C .130尺 D .135尺8.设m ,n 是两条不同的直线,a ,b 是两个不同的平面,且m ^a ,n ^b ,则“m ^n ”是“a ^b ”的A.充分不必要条件 B .必要不充分条件C.充要条件 D .既不充分也不必要条件9.将函数的图像向右平移14个周期后,所得图像对应的函数为f(x),则函数f(x)的单调10ABCD1112.13.若x,y满足约束条件,则的最小值为_______________.14. 在一次体育课定点投篮测试中,每人最多可投篮5次,若投中两次则通过测试,并停止投篮. 已知某同学投篮一次命中的概率是23,该同学心理素质比较好,每次投中与否互不影响. 那么该同学恰好投3次就通过测试的概率是 .15.1+1x 2æèçöø÷1+x ()6展开式中2x 的系数为 .16.(原创)已知数列{}n a 的前n 项和为n S ,且满足*12(3N )n n n S a n =-∈,S 2020= . 三、解答题 (本大题共6小题,共70分.解答应写出文字说明、证明过程或演算步骤.) 17.(本小题满分12分)在中,D 是BC边上的点,.(1)求sin B 的值; (2)若,求AC 的长.18.(本小题满分12分)某市一中学高三年级统计学生的最近20次数学周测成绩(满分150分),现有甲乙两位同学的20次成绩如茎叶图所示:(1)根据茎叶图求甲乙两位同学成绩的中位数,并据此判断甲乙两位同学的成绩谁更好?(2)将同学乙的成绩的频率分布直方图补充完整;(3)现从甲乙两位同学的不低于140分的成绩中任意选出2个成绩,设选出的2个成绩中含甲的成绩的个数为,求的分布列及数学期望.19.(本小题满分12分)已知四棱锥的底面ABCD 是等腰梯形,AB //CD ,.(1)证明:平面PBD ;(2)点E 是棱PC 上一点,且OE //平面PAD ,求二面角的余弦值.20.(本小题满分12分)P 满足直线PA 与PB 的斜率之积为(其中m 为常数,且). 记P 的轨迹为曲线C .绩9676445914334622173298768758651545021532151413121110 9⼄甲(1)求C 的方程,并说明C 是什么曲线; (2)过点A 斜率为k 的直线与曲线C 交于点M ,点N 在曲线C 上,且,若,求k 的取值范围.21.(原创)(本小题满分12分) 已知函数.(1)设,(其中f '(x )是f (x )的导数),求h (x )的最小值;(2)设,若g (x )有零点,求a 的取值范围.请考生在22、23两题中任选一题作答,如果多做,则按所做的第一题记分.22.(本小题满分10分)选修4-4:坐标系与参数方程在平面直角坐标系xOy 中,曲线C 为参数). 以坐标原点O 为极点,x 轴正半轴为极轴建立极坐标系,直线l 的极坐标方程为,若直线l 与曲线C 相切.(1)求曲线C 的极坐标方程;(2)在曲线C 上取两点M ,N 与原点O 构成,且满足,求面积的最大值.23.(本小题满分10分)选修4-5:不等式选讲 已知0,0,a b且222a b .(1)若对任意正数a ,b 恒成立,求x 的取值范围;(2)证明:。

2020届重庆市第一中学高三上学期期末考试数学(文)

2020届重庆市第一中学高三上学期期末考试数学(文)

秘密★启用前 【考试时间:1月19 日]2A.第一象限 B 第二象限 C.第三象限 D .第四象限3.(原创)设a3234 4 3-,b - , c log 2—,则a,b,c 的大小顺序是(432A. ba cB .c ab C . bc aD . a c b4.( 原 创 ) 设a 为 实 数,直线l 1 : ax y 1 0112:xa 1 y 2a0则 “是“ hI 2 ”的()2C.充要条件D.既不充分也不必要条件5.执行如右图所示的程序框图,输出的结果是( A.10 10116. 一个几何体的三视图如右图所示(单位:11 12m ,则该几何体的体积为()m 3 A. 6B . 5C. 6 2D. 5 27.正三角形ABC 中,D 是线段BC 上的点,AB 3, BD 2,则AB AD =()A. 3 B . 6 C9 D . 122020年重庆一中高2020级高三上期期末考试数学(文科)试题卷 2020.1注意事项:1 •答卷前,考生务必将自己的姓名、准考证号填写在答题卡上。

2 •作答时,将答案写在答题卡上。

写在本试卷及草稿纸上无效。

3 •考试结束后,将本试卷和答题卡一并交回。

第I 卷(选择题,共60分)、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 项是符合题目要求的。

1 •已知集合 A {1,2,3},B {x|(x 1)(x 2) 0,x Z},则 AU B ()1,2C .0,1,2,3 D . 1,0,1,2,33 4i2.复数z(其中i 为虚数单位)在复平面内对应的点位于()1 iA. 1B A.充分不必要条件 B.必要不充分条件 )i!沁間其焦点到渐近线的距离为.3,过点P 2,1的直线m 与双曲线E 交于A,B 两点.若P 是AB 的中点,则直线m 的斜率为()A. 2B. 4 C. 6 D. 810.元旦晚会一次猜奖游戏中, 1、2、3、4四个盒子里摆放了 a b 、c 、d 四件奖品(每个盒里仅放一件).甲同学说:1号盒里是b , 3号盒里是c ;乙同学说:2号盒里是b , 3号盒 里是d ;丙同学说:4号盒里是b , 2号盒里是c ; 丁同学说:4号盒里是a , 3号盒里是c . 如果他们每人都猜对了一半,那么 4号盒里是( )A.aB .b CcD. d11. (原创)在锐角三角形ABC 中, 内角 A 、B 、C 的对边分别为 a 、b c .若a 2,且cos -Asin B C2 si n2C ,则c 的取值范围为()2A.2.5B .2 C.2翻 2/3 D. 2 2 3,2,2—535 , 33 ,312 . 定义 在R 上 且周期为4 的函数fx 满 足 :当x 1,3 时,f x1 x2,1 x,若在区间 0,4上函数g xf x ax 1恰有三个不同的零ln x 2,0 x 3点,则实数a 的取值范围是( )A.0=Uln 3 」,1 B-0,3Uln 3 1,33C.1ln 3 11ln3 1U3,2D.U3 ,2第U 卷(非选择题,共90分)二、填空题:本题共 4小题,每小题5分,共20分。

2020届重庆市第一中学高三上学期期末英语试题

2020届重庆市第一中学高三上学期期末英语试题

2020年重庆一中高2020级高三上期期末考试英语测试试题卷英语试题卷共8页。

满分150分。

考试时间120分钟。

注意事项:1. 答题前,务必将自己的姓名、准考证号填写在答题卡规定的位置上。

2. 答选择题时,必须使用2B铅笔将答题卡上对应题目的答案标号涂黑,如需改动,用橡皮擦擦干净后,再选涂其他答案标号。

3. 答非选择题时,必须使用0.5毫米黑色签字笔,将答案书写在答题卡规定的位置上。

4. 所有题目必须在答题卡上作答,在试题卷上答题无效。

第一部分听力(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。

听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

1. Why does the woman want the sound turned down?A. She has a headache.B. She doesn’t like the song.C. She doesn’t want the neighbors to hear.2. What will the woman probably do next?A. Go to the man’s place.B. Call the Midland Hotel.C. Visit the concert hall.3. Where does the conversation take place?A. In the post office.B. In the house.C. In a store.4. How far away now is the city according to the man?A. Five miles.B. Ten miles.C. Twenty miles.5. What is the probable relationship between the speakers?A Colleagues. B. Waiter and customer. C. Brother and sister.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。

重庆市第一中学2020届高三上学期期末考试英语

重庆市第一中学2020届高三上学期期末考试英语

2020年重庆一中高2020级高三上期期末考试英语第一部分听力(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。

听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

1. Why does the woman want the sound turned down?A. She has a headache.B. She doesn’t like the song.C. She doesn’t want the neighbors to hear.2. What will the woman probably do next?A. Go to the man’s place.B. Call the Midland Hotel.C. Visit the concert hall.3. Where does the conversation take place?A. In the post office.B. In the house.C. In a store.4. How far away now is the city according to the man?A. Five miles.B. Ten miles.C. Twenty miles.5. What is the probable relationship between the speakers?A. Colleagues.B. Waiter and customer.C. Brother and sister.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。

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2020年重庆一中高2020级高三上期期末考试
数学(文科)试题卷
考试时间:120分钟
学校:___________班级:___________姓名:___________学号:___________
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 ,,则 A.{1}
B.{1,2}
C.{0,1,2,3}
D.{-1,0,1,2,3}
A ={1,2,3}
B ={x |(x +1)(x −2)<0,x ∈Z }A ∪B =
2.复数 (其中 为虚数单位)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
z =3−4i
1−i i 3.设 ,,,则 的大小顺序是
A.B.C.D.a =(34)−34b =(43)2c =log 232a ,b ,c b <a <c
c <a <b
b <
c <a
a <c <b
4.设 为实数,直线 ,, 则“”是“”的
A.充分不必要条件
B.必要不充分条件
C.充要条件
D.既不充分也不必要条件
a :ax +y −1=0l 1:x +(a −1)y −2a =0l 2a =12⊥l 1l 25.执行如下图所示的程序框图,输出的结果是
A.B.C.D.8
99
1010
111112
6.一个几何体的三视图如图所示(位:),则该几何体的体积为______.A.B.C.D.m m
36+π
5+π
6+2π
5+2π
7.正三角形 中, 是线段 上的点,,,则 A.3
B.6
C.9
D.12
ABC D BC AB =3BD =2⋅=AB →AD

8.已知函数 的部分图象如下图所示,则函数 在 上的值域为A.B.C.D.f (x )=A sin(ωx +φ)(A >0,ω>0,−<φ<)π2π2f (x )x ∈(−,)π4π4
[−,]
2‾√2‾√(−,)
2‾√2‾√[−1,]
2‾√(−1,]
2‾√9.在平面直角坐标系 中,双曲线 的离心率为 ,其焦点到渐近
线的距离为 ,过点 的直线 与双曲线 交于 两点.若 是 的中点,则直线 的斜率为
A.2
B.4
C.6
D.8xOy E :
−=1(a >0,b >0)x 2a 2y 2b 223‾√P (2,1)m E A ,B P AB m 10.元旦晚会一次猜奖游戏中, 四个盒子里摆放了 四件奖品(每个盒里
仅放一件).甲同学说: 号盒里是 , 号盒里是 ;乙同学说: 号盒里是 , 号盒里是 ;丙同学说: 号盒里是 , 号盒里是 ;丁同学说: 号盒里是 , 号盒里是 .如果他们每人都猜对了一半,那么 号盒里是
A.B.C.D.1、2、3、4a 、b 、c 、d 1b 3c 2b 3d 4b 2c 4a 3c 4a
b
c
d
11.在锐角三角形 中,内角 的对边分别为.若 ,且
,则 的取值范围为D A.B.C.ABC A 、B 、C a 、b 、c a =2cos(−A )+sin(B −C )=2sin(π−2C )π2
c (,)23
23√3(,2)25√5(,2)23(,)
25√523√312.定义在 上且周期为 的函数 满足:当 时,,若在区间 上函数 恰有三个不同的零点,则实数 的取值范围是
A.B.R 4f (x )x ∈[−1,3)f (x )=
{(,−1≤x ≤012)x ln x +2,0<x <3[0,4]g (x )=f (x )−ax −1a [0,]∪(,1)14ln 3+13[0,]∪(,1)13ln 3+13
C.D.[0,]∪(,2)14ln 3+13
[0,]∪(,2)
13ln 3+13二、填空题:本题共 4 小题,每小题 5 分,共 20 分。

13.在等比数列 中,已知 ,,则 _______.
{}a n =5a 1=40a 9a 10=a 1814.已知 是定义在 上的奇函数,若 时,,则曲线 在点
处的切线斜率为________.
f (x )R x >0f (x )=2ln x +x y =f (x )(−1,−1)15.设不等式组 所表示的平面区域为 ,函数 的图象与 轴所围成的区域为 ,向 内随机投一个点,则该点不落在 内的概率为________.
⎧⎩⎨⎪⎪x −y ≤22‾√x +y ≥−22‾√y ≤0
M y =−1−x 2‾‾‾‾‾‾√x N M N 16.已知一个圆锥的底面直径为 ,其母线与底面的夹角的余弦值为 .圆锥内有一个内接正方体,该内接正方体的顶点都在圆锥的底面或侧面上,则这个正方体的外接球表面积为
________.
2‾√13三、解答题:共 70 分。

解答应写出文字说明证明过程或演算步骤。

第 17~21 题为必考题,每个试题考生都必须作答。

第 22、23 为选考题。

考生根据要求作答。

(一)必考题:共 60 分。

17.已知数列中,,,.
(1).求证:数列 是等比数列;
(2).求数列 的前 项 和 .
{}a n =1a 1=2+n −1a n +1a n =+n b n a n {}b n {}a n n S n 18.
对某居民最近连续几年的月用水量进行统计,得到该居民月用水量 (单位:吨)的频率分布直方图,如图一.
(1).求 的值,并根据频率分布直方图估计该居民月平均用水量 ;
(2).已知该居民月用水量 与月平均气温 (单位:℃)的关系可用回归直线 模拟
2019 年当地月平均气温 统计图如图二,把 2019 年该居民月用水量高于和低于 的月份T a T 月⎯⎯
⎯⎯⎯⎯⎯⎯T t =0.4t +2T t T 月⎯⎯⎯⎯⎯⎯⎯⎯
作为两层,用分层抽样的方法选取 5 个月,再从这 5 个月中随机抽取 2 个月,求这 2 个月中该居民恰有 1 个月用水量超过 的概率.
T 月⎯⎯⎯⎯⎯⎯⎯⎯19.已知四棱锥 中,底面 是边长为 的菱形,,
,.点 是棱 的中点,点 在棱 上,且 , 平面 .(1).求实数的值;
(2).求四棱锥 的体积.
S −ABCD ABCD 2∠BAD =60∘SA =SD =5‾√SB =7‾√E AD F SC =λSF SC
SA //BEF λF −EBCD 20.已知椭圆 过圆 的圆心 ,且右焦点
与抛物 的焦点重合.
(1).求椭圆 的方程;
(2).过点 作直线 交椭圆 于 两点,若 ,求直线 的方程.C :+=1(a >b >0)x 2
a 2y 2
b 2Q :+−4x −2y +3=0x 2y 2Q =4x y 23‾√C P (0,1)l C A ,B =tan ∠AQB S △AQB l 21.已知函数 , 是 的导函数.
(1).讨论函数 的极值点个数;
(2).若 ,,若存在 ,使得 ,试比较 与 的大
小.
f (x )=x −m ln x ,m ∈R (x )f ′f (x )f (x )m >00<<x 1x 2x 0()=
f ′x 0f ()−f ()x 1x 2−x 1x 2+x 1x 22x 0(二)选考题:共 10 分。

请考生在第 22、23 题中任选一题作答。

如果多做,则按所做的第一题计分。

22.[选修 4-4:坐标系与参数方程]
在平面直角坐标系 中,已知曲线 的参数方程为 ( 为参数),以 为极点, 轴的非负半轴为极轴,曲线 的极坐标方程为:.
(1).求曲线 的普通方程和曲线 的参数方程;
(2).若点 在曲 上运动,求点 到曲线 距离的最小值及对应的点 的坐标.xOy C 1⎧⎩⎨⎪⎪x =1−t 2√2y =2+t
2√2t O x C 2(3−cos 2θ)=4ρ2C 1C 2M C 2M C 1M 23.[选修 4-5:不等式选讲]
(原创)已知函数 .
(1).当 时,证明:;
(2).若 的值域为,且 ,解不等式.
f (x )=|x −a |+|x +b |(a >0,b >0)ab =1f (x )≥2f (x )(2,+∞)f (3)=5f (x )≥4。

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