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。

2020年重庆一中高三英语期末考试试题及答案

2020年重庆一中高三英语期末考试试题及答案

2020年重庆一中高三英语期末考试试题及答案第一部分阅读(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项AThese wonderful NYC attractions offer pay — what — you — wish days, free entry hours/days and other great stuff for local families.Staten IslandZooThere are plenty of creatures who call NYC home—the Staten Island Zoo is one of them. Once you’ve finished learning about the wildlife in the animal nursery, reptile (爬行动物) side rooms, horse barn and other areas of the attraction, make sure to mark your schedule for fun seasonal happenings, such as the Easter Egg Games and the scary, crazy Halloween Shows.Entry on Wednesdays is by suggested donation; children aged two and under free.Children’s Museum of the ArtsThe Children’s Museum of the Arts welcomes 135,000 little visitors each year through its doors. Once inside, the whole family can enjoy interactive programs, exhibitions (展览) and events that celebrate the changed power of the arts on youngsters and grown-ups alike.Pay-as-you-wish Thursdays, 3-6 p. m.Wave HillEveryone needs a few hours of calm now and then-kids included-and you’d be hard- pressed to find a more peaceful spot within city limits than Wave Hill the broad grounds located above the river, covering 28 acres of public gardens, plus woodlands and grasses to wander. Jump in on nature walks, story times and family art projects often led by local artists and free with general admission.Pay — as — you — wish Tuesdays and Saturdays,9 a. m — noon.New York Hall of ScienceNaturally, kids love it when the New York Hall of Science pleases them with neat exhibits and fun hands-on activities. The museum’s playground is themost attractivetochildren A tube slide (管道滑梯) will give little ones the knowledge on science topics, while the climbing area mirrors a giant spider web. There are also wind pipes, metal drums, sand- boxes and much more. What better way to make the mostout of science?Free entry Sep-Jun on Fridays, 2 — 5 p. m,and Sundays, 10 —11 a. m.1. What can children do in Staten Island Zoo?A. Feed injured animals.B. Join in seasonal activities.C. Build a home for creatures.D. Deal with the donations to the zoo.2. What do Children’s Museum of the Arts and Wave Hill have in common?A. They both have peaceful spots.B. They both are located by a river.C. They both have public gardens.D. They both have activities about arts.3. Which place can be free of charge for all?A. Wave Hill.B.Staten IslandZoo.C. New York Hall of Science.D. Children’s Museum of the Arts.BBy mid-century there will likely be 9 billion people on the planet, using ever more resources and leading ever more technologically complex lives. What will our cities be like? How much will artificialintelligence (AI) advance? Will global warming cause disastrous changes, or will we be able to engineer our way out of the climate change issues? Recently, the magazineBig Thinkasked top minds from a variety of fields to weigh in on what the future holds 40 years from now. The result is as follows.It's likely that by 2050 the majority of the people in the world will live in urban areas and will have a much higher average age than people today. Cities theorist Richard thinks urbanization will transform the education system of, making our economy less houses driven and removing the divisions between home and work.And rapidly advancing technology will continue ever more rapidly. Cities of the future won't look like “some sort of science-fiction fantasy”, but it's likely that technological advances and information overlays (VR and AR) will greatly change how we live. Self-driving cars will make the roads safer and provide faster transports. A larger version of driverless cars-driverless trucks — may make long-distance drivers out of date.Some long view predictions are completelydire. Environmentalist Bill says that if we don't make great progress in fighting global warming, it's likely we could see out-of- control rises in sea levels, huge crop shortfallsand wars over limited freshwater resources.In terms of how we will eat, green markets founder and “real food" supporter Nina believes that there will be more small milk processing plants and more regional food operations and we'll be healthier as a result.New York Timeswriter Mark thinks that people will eat fewer processed foods and eat foods grown closer to where they live. And more people will be aware of the ethical responsibility" to grow foods.4. What may happen by 2050 based on the magazineBig Think ?A. Education will be driven by economy.B. The majority of people will be taller.C. AI will cause disastrous changes.D. Most people will live in big cities.5. What do we know about technology in the future according to Paragraph 3?A. It will make people live in science-fiction fantasy.B. It will ensure safer transports due to faster cars.C. It will greatly change the way in which people live.D. It will increase the number of long-distance drivers.6. What does the underlined word "dire" in Paragraph 4 mean?A. Magical.B. Terrible.C. Ridiculous.D. Meaningful.7. What does Nina think of foods in the future?A. People will eat healthier and fresher foods.B. Land-raised farm systems will be improved.C. There will be smaller regional food operations,D. Food supplies will become much more limited.CDid you know people who live in different parts ofChinahave different habits and preferences? For example, people from southernChinaprefer to eat vegetables, while people from northChinalike to eat meat. According to a new study in a journal, gene variations (变异) might be responsible for these differences. Researchers fromChina’s BGI collected genetic information from 141,431 Chinese women, who came from 31 provinces and consisted of 36 ethnic minority groups.They found that natural selection has played an important role in the ways that people living in different regions of China have developed, affecting their food preferences, immunities (免疫力) to illness and physical features.A variation of the gene FADS2 is more commonly found in northern people. It helps people metabolize (新陈代谢) fatty acids, which suggests a diet that is rich in flesh. This is due to climate differences.Northern Chinais at a higher latitude. This weather is difficult to grow vegetables in. Therefore, northerners tend to eat more meat.The study also found differences in the immune systems of both groups. Most people in southernChinacarry the gene CR1, which protects against malaria. Malaria was once quite common in southernChina. In order to survive, the genes of people in the south evolved to fight against this disease. However, people in the south are also more sensitive to certain illnesses, as they lack the genes to stop them.Genes can also cause physical differences between northerners and southerners. Most northerners have the ABCC11 gene, which causes dry earwax, less body smell and fewer sweats. These physical differences are also more beneficial to living in cold environments. Southerners are less likely to have this gene, as it did not develop in their population.8. What did the new study focus on?A. Regions.B. Eating habits.C. Gene variations.D. Ethnic minority groups.9. What is the main function of the gene FADS2?A. It helps store fat.B. It helps digest meat.C. It helps gain weight.D. It helps treat an illness.10. According to the study, most northerners ________.A. sweat less frequentlyB. are immune to malariaC. prefer vegetables to meatD. are more sensitive to climates11. How many differences did the study find related to genes?A. Two.B. Three.C. Four.D. Five.DOnline education has grown fast over the past ten years. The explosion of technology has made teaching outside the traditional classroom possible for teachers and has provided learners with easy access to course materials. Its attractiveness, benefits, and challenges are addressed.In April, 2005, I was approached by a student who was interested in our doctoral program. However, the first question out of her mouth was, “Do you offer any online courses?” Later that day, as I was reading the conference program guide trying for interesting presentations, I noticed many workshops on web-based learning and online education. I later attended two of those workshops and met several professors from different universities who had either taught online courses for quite some time or who were discovering the best practice for teaching online.These experiences helped me realize at least to some extent the degree of growth in online education.My responsibilities for the term included gaining more understanding of online education. Consequently, I made several attempts to enrich my knowledge of distance learning and online teaching. I consulted with my colleagues who were teaching online courses. This helped me recognize the importance of getting materials prepared even before the start of a term. I also learned that online courses may consume more time than regular classroom teaching. And I attended several workshops regarding online education and established a network with those who were involved in online programs at other universities. I will consider these people as my consultants as I begin to design my own online course. Also, I conducted a brief survey with 15 students and two faculty members who had taken or taught an online course before to understand their experience. Eventually I completed a literature review which gave me the foundation and the background of understanding the need for online education.12. What benefits the development of online education?A. Teachers’ good teaching ability.B. Lack of traditional classrooms.C. Learners’ access to free courses.D. The rapid advance of technology.13. Why did the author take a student for example?A. To show students’ love for the doctoral program.B. To persuade learners of traditional education.C. To explain the growing trend of online education.D. To predict the future of the teaching career.14. What caused the author to know more about online education?A. The appetite for knowledge.B. The professional responsibilities.C. The requirement of research.D. The colleagues’ encouragement.15. What is the author’s attitude to online education?A. Carefree.B. Doubtful.C. Supportive.D. Unwilling.第二节(共5小题;每小题2分,满分10分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。

2020届重庆一中高三英语上学期期末考试试题及答案

2020届重庆一中高三英语上学期期末考试试题及答案

2020届重庆一中高三英语上学期期末考试试题及答案第一部分阅读(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项ALocated inLos Angeles,UniversityofSouthern Californiais in the heart of a leading city. Although LA ranks highly in The Economist’s Safe Cities Index, navigating and city calls for certain safety precautions (预防措施) along with practicing common sense.♦Mobile Safety App Powered by LiveSafeThe Mobile Safety App powered by LiveSafe, manage by the USC Department of Public Safety and the USC Department of Emergency Planning, is a free downloadable app that mobile users can use to initiate contact with emergency responders around the campus. Features include: immediate “push button” calls to DPS, easy reporting for suspicious activity or crimes in progress, and location services to notify friends of your route through campus.♦Blue Light Phone LocationsTheUniversity Parkhas multiple blue light phones that are strategically placed throughout campus. Take note of where the closest ones are on your route. They come in handy in case you lose your phone or in an emergency. These phones are directly connected to USC’s Department of Public Safety’s 24-hour communications center. Besides emergency needs, it can also be used to report suspicious activity, request for an escort (护送) if you feel unsafe and to report a crime.♦Trojans AlertTrojans Alert is an emergency notification system that allows university officials to contact you during an emergency by sending messages via text message or email. When an emergency occurs, authorized USC senders will instantly notify you with real-time updates, instructions on where to go, what to do (or what not to do), whom to contact and other important information. All members of the USC community, as well as parents and regular visitors to campus, are strongly encouraged to sign up for Trojans Alert.1. What do blue light phones do for students?A. Guide students through campus.B. Alert students to crime activities.C. Light up the way if students feel unsafe.D. Connect them with the safety department.2. How does USC send out instructions during an emergency?A. With blue light phones.B. Via text message or email.C. Through mobile safe app.D. By calling all USC members.3. What is the purpose of the text?A. To encourage students to fight crime.B. To introduce USC’s safety department.C. To provide safety services for USC students.D. To inform parents of safety risks on campus.BOne day, when I was working as a psychologist(心理学家)in England, an adolescent boy showed up in my office. It was David. He kept walking up and down restlessly, his face pale, and his hands shaking slightly. His head teacher had referred him to me.“This boy has lost his family,” he wrote. “He is understandably very sad and refuses to talk to others, and I’m very worried about him. Can you help?”I looked at David and showed him to a chair. How could I help him? There are problems psychology doesn’t have the answer to, and which no words can describe. Sometimes the best thing one can do is to listen openly and sympathetically(同情)The first two times we met, David didn’t say a word. He sat there, only looking up to look at the children’s drawings on the wall behind me. I suggested we play a game of chess. He nodded. After that he played chess with me every Wednesday afternoon---in complete silence and without looking at me. It’s not easy to cheat in chess, but I admit I made sure David won once or twice.Usually, he arrived earlier than agreed, took the chess board and pieces from the shelf and began setting them up before I even got a chance to sit down. It seemed as if he enjoyed my company(陪伴). But why did he never look at me?“Perhaps he simply needs someone to share his pain with,” I thought. “Perhaps he senses that I respect his suffering.” Some months later, when we were playing chess, he looked up at me suddenly.“It’s your tum,” he said.After that day, David started talking. He got friends in school and joined a bicycle club. He wrote to me a fewtimes, about his biking with some friends, and about his plan to get into university. Now he had really started to live his own life.Maybe I gave David something. But I also learned that one…without any words---can reach out to another person. All it takes is a hug, a shoulder to cry on, a friendly touch, and an ear that listens.4. When he first met the author, David .A. felt a little excitedB. looked a little nervousC. walked energeticallyD. showed up with his teacher5. David enjoyed being with the author because he .A. wanted to ask the author for adviceB. liked the children’s drawings in the officeC. beat the author many times in the chess gameD. needed to share sorrow with the author6. What can be inferred about David?A. He liked biking before he lost his family.B. He recovered after months of treatment.C. He went into university soon after starting to talk.D. He got friends in school before he met the author.7. What made David change?A. The author’s silent communication with him.B. His teacher’s help.C. The author’s friendship.D. His exchange of letters with the author.CIf you go into the forest with friends, stay with them. If you don’t, you may get lost. If you get lost, this is what you should do. Sit down and stay where you are. Don’t try to find your friends—let them findyou. You can help them find you by staying in one place. There is another way to help your friends or other people to find you. You can shout or whistle three times. Stop. Then shout or whistle three times again. Any signal given three times is a call for help.Keep up shouting or whistling. Always three times together. When people hear you, they will know that you are not just making a noise for fun. They will let you know that they have heard your signal. They will give you two shouts or two whistles. When a signal is given twice, it is an answer to a call for help.If you don’t think that you will get help before night comes, try to make a little house with branches(树枝). Make yourself a bed with leaves and grass.When you need some water, you have to leave your little branch house to look for it. Don’t just walk away. Pick off small branches and drop them as you walk in order to go back again easily. When you are lost, the most important thing to do is to stay in one place.8. If you get lost in the forest, you should _________.A. try to find your friends in no timeB. stay in one place and give signalsC. walk around the forestD. shout as loudly as possible9. Which signal is a call for help?A. Crying twice.B. Shouting here and there.C. Whistling everywhere in the forest.D. Shouting or whistling three times together.10. When you hear two shouts or two whistles, you know that _________.A. someone needs your helpB. something terrible will happenC. people will come to help youD. someone is afraid of an animal11. What’s the meaning of the last paragraph?A. Use branches to make a bed.B. Drop branches to look for water.C. Pick off branches to build another house.D. Leave branches to help you find your way back.DOne-year-old Tallulah turned purple and stopped moving after the sweet became stuck in her throat. Her mum Leigh-Anne said the drama began during a visit to her grandma’s house when her grandparents gave her older kids some sweets.“Then at about 4:45 pm, Tallulah started to choke—we all went into a panic.”“It seemed like it went on for ages. Not one of us knew what to do.”“I rang an ambulance while my grandma and granddad tried to get the sweet to come up.”“Tallulah was panicking at first but then she started to go purple—she almost had no oxygen left in her.”With her daughter limp (无力的) and time running out, Leigh—Anne knew she couldn’t afford to wait for the ambulance to arrive.“The only thing I could think was to go out into the street.” She said.“I rushed out and screamed for someone to help while my grandma rushed out crying with Tallulah.”At exactly the moment, Caitlin, who is studying public services atRedcarCollege, was passing byQueen Street. She said, “I was waiting to go to work when I heard someone screaming for help, so I ran straight over.”The 17-year-old girl added, “Something just clicked and I went into auto mode. The little girl was completely limp, so I checked her airways and tilted (使倾斜) her over and started hitting her back. I turned her round and tapped on her chest, then after what felt like forever she coughed up the sweet and spat it out.As soon as she started crying I felt a huge relief. I was just so pleased I was able to help.”Caitlin was taught her lifesaving skills when she joined the Army Cadets four years ago.12. When did Tallulah get choked?A. While eating sweets.B. While enjoying a drama.C. While having a meal.D. While taking some medicine.13. Why did the family go out into the street?A. To buy some needed tools.B. To search for timely help.C. To get a breath of fresh air.D. To wait for the ambulance to arrive.14. Which of the following can best describe Caitlin?A. Brave and selfless.B. Kind and energetic.C. Determined and generous.D. Quick-thinking and helpful.15. What may be the best title for the text?A. First aid skill sounds important.B. Screaming for help makes sense.C. Eating sweets endangers baby girl.D. Heroic teenager saves baby girl’s life.第二节(共5小题;每小题2分,满分10分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。

2020届重庆一中渝北校区高三语文上学期期末试题及参考答案

2020届重庆一中渝北校区高三语文上学期期末试题及参考答案

2020届重庆一中渝北校区高三语文上学期期末试题及参考答案一、现代文阅读(36分)(一)现代文阅读I(9分)阅读下面的文字,完成下列小题。

你在谁的伞下⑴某个雷雨之夜我赶路回家,没带雨具,前面几步远的距离,一位姑娘持伞而行,那伞宛若一朵无雨的云。

⑴雷雨交加,街上行人稀少,那姑娘不时地回头望我,目光带着疑惑甚至惊恐,很显然,我的存在使她有后顾之忧。

这虽让人心寒,但也不能怪她,因此情此景颇像一些虽不高明却足以令人紧张的小说情节了:深夜,一条汉子尾随一个年轻的女郎,在雨中。

(3)君子坦荡荡,为了她的安宁,我加速走到她前面去。

我只担心在经过她身边时,她别吓得尖叫起来。

电闪雷鸣之际再加上女人的尖叫声,会搞得这城市神经错乱的。

⑴我把背影留给她,这样便显得更纯洁些。

我哼着小调,步伐坚定从容,并竭力装出好人的样子——大概世界上再没有比好人假装好人更加狼狈的事了。

⑴雨至滂沱,我已浑身湿透,忽然发现她竟跟了上来,走在我身边,事情发生了戏剧性的变化,她有意无意地向我靠拢,慢慢地又将伞举到了我的头顶。

雨被截住了,拍着伞。

⑴我给了她安全感,她给我信任和帮助。

转眼之间,我们成为一柄伞下的同路人。

在城市,这是很动人的一刻。

人与人的心灵原是可以相通的,凭借着雨夜,伞是小小的道具。

⑴起初我挺拘谨,东张西望,有做坏事的心情,见四周一片茫茫,也就释然了。

我接过伞来举着,路过自己的住所也未停下,像个真正的保镖一样,把她护送到家门口。

她要我带走伞,我谢绝了,尔后我们像朋友似地道别。

⑴故事本可以到此为止,然而时隔数日,我在街头再次遇见那姑娘,互相一愣,犹豫了一瞬,又像陌生人一般擦肩而过,连招呼也未打。

这是白天,没有雨,街上人涌如潮。

⑴这个破坏性的结果无疑令人失望。

我为此假设过多种结果,反过来看看,唯有它真实得不可动摇。

因为它绝对符合现代城市的性格。

⑴在日趋冷漠的城市里,人们习惯了隔膜与生疏,每个人都是一座孤岛,挨得很近也无法连成陆地,孤独感使人对沟通和交流产生抗体,再没有什么比陌生更让人熟悉。

2020届重庆一中渝北校区高三英语上学期期末考试试卷及答案

2020届重庆一中渝北校区高三英语上学期期末考试试卷及答案

2020届重庆一中渝北校区高三英语上学期期末考试试卷及答案第一部分阅读(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项AInformation on school visits to Kew GardensEnjoy yourselves in a wonderland of science with over 50,000 living plants and a variety of educational events or amusing activities. Here is essential information about planning a school visit to Kew.Educational course pricesYou can plan a self-led visit or book one of our educational courses. Students will take part in the educational courses in groups of 15. Prices vary according to different situations.EYFS (Early Years Foundation Stage) to Key Stage 4:45-minute course: 35/group 90-minute course: 70/groupKey Stage 5:Half day (one course): 80/group Full day (two courses): 160/groupTeachers and adults:Up to required key stage proportions (比例): FreeAdults needed for 1:1 special educational needs support: FreeAdults above the required proportions: 11/personThe payment will due within 28 calendar days of making the booking.Health and safetyRequired supervising (监护) adult-student proportions:Key Stage 1: 1:5 Key Stage 2: 1:8Key stage 3: 1:10 Key Stage 4: 1:12Key Stage 5: 1:12The group sizes should be controlled if you are visiting potentially busy areas such as the glasshouse and other attractions. The maximum number of students visiting the glasshouses is 15 per group and each group to Kew shops should include no more than 10 students.If there is an emergency, please contact the nearest Kew staff member or call Constabulary on 0208 32 3333 for direct and quick support. Please do not call 999.Planning your visitYour tickets and two planning passes will be sent to you upon receipt of your payment. You can complete your risk assessment with the passes, ensure you bring your tickets and the receipt document and show them to the staff members at the gate on the day of your visit.Recommended timingsThe Kew Gardens opens at 10 am. You are recommended to spend at least three to five hours on your visit. The closing time varies throughout the year. But the earliest is 3:30 pm. We have a fixed schedule for educational courses, which is from 10:30 am to 2:20 pm.1.How much should a group of 15 Key Stage I students and 4 teachers pay for a 45-minute course?A.35B.46C.57D.812.What should one do in an emergency?A.Check the risk assessment.B.Call 999 immediately.C.Ask adults or teachers for help.D.Seek help from the staff member nearby.3.What is the purpose of the text?A.To introduce Kew Gardens.B.To give tips on visiting Kew Gardens.C.To attract potential visitors to Kew Gardens.D.To inform coming activities in Kew Gardens.BWhat acts of kindness will make us the happiest, and who tends to benefit the most? A newly-published review of decades of kindness research provides some answers.In this paper, researchers analyzed the results from 126 research articles looking at almost 200, 000 participants from around the world. The studies they chose measured well-being in various ways, including both mental and physical health. Some were experiments, where people did a kindness practice to observe its effects, while others just surveyed people about how kind and happy they were.As expected, people who were kind tended to have higher well-being. Lead researcher Bryant Hui wasastoundedthat the relationship wasn't stronger than it was, but he was still encouraged by the results.One thing Hui and his colleagues found was that people who performed random, informal acts of kindness,like bringing a meal to a sad friend, tended to be happier than people who performed more formal acts of kindness, like volunteering in a soup kitchen.The researchers also found that people who were kind tended to be higher in "eudaimonic happiness"(a sense of meaning and purpose in life) more than "hedonic happiness"(a sense of pleasure and comfort). Perhaps this makes sense, given that being kind takes effort, which reduces comfort but could make people feel better about themselves and their abilities, which would provide a sense of meaning.Being kind came with greater eudaimonic happiness for women than for men, too. According to Hui, this could be because, in many cultures, women are expected to be kinder than men; so, they may have more to gain from it. And younger participants experienced more happiness when they were kind than older participants, perhaps for developmental reasons, he says.Hui isn't sure why acting kind might have these different effects on different groups, but he points to theories put forth by researcher Elizabeth Midlarsky: Being kind may make us feel better about ourselves as a person or about the meaning of our lives, help us forget our own troubles and stresses, or help us be more socially-connected with others.4. What does the data in the second paragraph intend to show?A. The recent paper is worthy of being read.B. The recent paper gives convincing results.C. Kindness is always a hot topic of research.D. Kindness is closely linked to one's well-being.5. What does the underlined word "astounded" in paragraph 3 mean?A. Afraid.B. Certain.C. Excited.D. Surprised.6. Which of the following acts of kindness can make one feel happier according to paragraph 4?A. Volunteering in a hospital.B. Cleaning a community.C. Returning a lost item to its owner.D. Collecting donations for the poor.7. What do the researchers find from the paper?A. Being kind has different effects on different groups.B. Eudaimonic happiness makes people feel comfort.C. The younger experienced more happiness than the older.D. Female participants are kinder than male ones.CThe mass death of flying foxes in extreme heat in North Queensland last month underlines the importance ofUniversityofQueenslandwildliferesearch released today.The UQ research sheds light on how various species haveresponded to major climate events.A study led by UQ School of Earth and Environmental Science researcher Dr Sean Maxwell has spent more than 70 years quantifying the responses of various species.“The growing frequency and intensity of extreme weather events such as cyclones, droughts and floods is causing unpredictable and immediate changes to ecosystems and blocking existing management efforts,” Dr Maxwell said.“Some of the negative responses we found were quite concerning, including more than 100 cases of dramatic population declines and 31 cases of local population extinction following an extreme event.”"Populations of critically endangered bird species inHawaii, such as the palia, have been annihilated due to drought, leaving none of its kind, and populations of lizard species have been wiped out due to cyclones in theBahamas."Cyclones were the most common extreme event for birds, fish, plants and reptiles, while mammals and amphibians were most responsive to drought events, with drought leading to 12 cases of major population decline in mammals.Drought also led to 13 cases of breeding declines in bird populations and 12 cases of changes in the composition of invertebrate communities.UQ Centre for Biodiversity and Conservation Science director Professor James Watson said the detailed information would help inform ecosystem management.“The research clearly shows species will respond, often negatively, to extreme events,” Professor Watson said.“As climate change continues to ensure extreme climate and weather events are more and more common,we now need to act to ensure species have the best chance to survive.Wherever possible, high quality and intact habitat areas should be retained, as these are the places where species are most resilient(易恢复的) to increasing exposure to extreme events.”8. How was the UQ researchconducted?A. By observing extreme weather events.B. By protecting the endangered species.C. By recording reactions of animals to extreme climate.D. By analyzing the reason whymass animal death happened.9. What does the underlined word “annihilated” in paragraph 4 probably mean?A. destroyedB. defeatedC. decreasedD. disappeared10. Which of the following sentences is true about extreme weather events?A. Drought caused 13 cases of distinctionin bird populations.B. Drought caused 12 cases of population decline in mammals.C. Birds and mammals are most responsive to cyclones.D. Cyclones wiped out populations of lizard.11. What can we infer from Professor Watson’s words?A. Animals often show negative responses to extreme events.B. The existing management ways for wildlife protection are limited.C. Different methods should be adopted to ensure the survival of different species.D. Complete and undamaged habitats are of great importance to species’ survival.DIn the natural habitat, a binge-watcher is a strange sub-species of modern human beings. They are alone and are often found lying on their bed or sofa, still as a rock, looking searchingly into their laptop or at the TV. They rarely get up, only taking occasional breaks for those urgent calls of nature. Unlike so many others of their species, they don’t sleep at the end of every day. They stay up late and are often found to have red eyes.This, of course, is a little bit exaggerated, but for many of us, binge-watching a show is how we consume our entertainment. With streaming services bringing seemingly endless content to the tips of our finger, creatorstailortheir shows to our needs and tastes, while their marketing team sells it to us as the next most bingeable show. I can’t help but wonder if this way of consuming television does us any good.We’re advised to get 7 to 8 hours of sleep per day, but staying up all night to finish shows like ‘Breaking Bad’ and ‘The Fall’, which Netflix says are binged the fastest, won’t result in 8 hours of uninterrupted sleep. Netflix’s CEO Richard Hastings told analysts at a conference, “Think about it… when you watch a show from Netflix and you get addicted to it, you stay up late at night. We’re competing with sleep.” And it isn’t only the amount of sleep we get; the quality matters too! A study published in the Journal for Clinical Sleep Medicine reported that those who binged television more often were found to have poorer sleep quality. The mental arousal we get from watching TV doesn’t lend itself to peaceful sleep.Besides, binging TV can cause weight gain. For every extra hour of TV watched, there was a 2% increase in the prevalence of obesity, according to a study conducted by Harvard that linked TV watching to obesity in children and adolescents.While it is true that there’s growing evidence that binging isn’t good for us, the results aren’t all hopeless. Binging, occasionally, might have some benefits. For many people, binging is a good way to socialize. It givespeople something to talk about at parties and with their friends. Fans of popular shows often hold viewing parties where people can binge-watch shows together and then discuss what they just experienced! This interaction can create a sense of community for many.For others, binging might just be relaxing. After a long day, a few hours of Friends—still one of the most popular shows on any streaming platform—can ease the stress of a long day. A study followed 240 people through their binging and recorded their stress hormones. They noted for some people that their stress hormone levels decreased during their binging experience.With binging, there is not a “good” or “bad” answer. Like many things, the key is moderation. Watching TV can be relaxing, but only if it doesn’t stop you from exercising, taking care of your health, and fulfilling your social responsibilities.12. What does the underlined word “tailor” in Paragraph 2 probably mean?A. Study.B. Sell.C. Adjust.D. Promote.13. What can we learn from the passage?A. The amount of sleep matters more than the quality.B. There’s no real harm in binge-watching a TV series.C. Binging may help keep stress hormone levels stable.D. Binge-watching may help increase social connections.14. What is the author’s attitude towards binge-watching?A. Supportive.B. Unconcerned.C. ObjectiveD. Doubtful.15. Which of the following would be the best title for the passage?A. Who Is to Blame for Binge-Watching?B. Is Binge-Watching Good or Bad for You?C. Is Binge-Watching Getting out of Control?D. HowDoes Binge-Watching Affect Your Life?第二节(共5小题;每小题2分,满分10分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。

2020届重庆市第一中学高三英语上学期期末考试试题及参考答案

2020届重庆市第一中学高三英语上学期期末考试试题及参考答案

2020届重庆市第一中学高三英语上学期期末考试试题及参考答案第一部分阅读(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项AThe Fall 2020 Cookbooks Worth Your Time (and Money)Be My GuestFrom Priya Basil, this book is a self-reflection on how food and the act of serving it are used to express love and support. Basil reflects on some of her earliest memories of food and how it affected her upbringing and relationship with her parents. Now a parent herself, she centers food in her book's exploration of that change of identity.EastFrom Guardian columnist Meera Sodha comes a cookbook centered on vegetables. The book features recipes that cover a variety of Asian cuisines. Sodha showcases the diversity of vegetarian cooking with dishes like eggplant larb mushroom bao, Singapore noodles and so much more.I Cook in ColorA follow-up from her first cookbook My Two Souths, Asha Gomez focuses on the rainbow of vegetables to create desserts and cross-cultural dishes that associate cooking traditions of her mother's Keralite kitchen and Gomez's travel experiences.Time to EatIf you're a fan of The Great British Baking Show and Nadiya Hussain's Netflix series, you'll be just as excited for the American release of this book of time-saving tips for home cooks on a budget. It's a book to go to for inspiration that doesn't involve countless hours of sweating over a hot stove.1.What can we learn about the author ofBe My Guest?A.She had a bad relationship with her parents.B.She began to cook food in her early childhood.C.She considers food a means of expressing affection.D.She explores in the book how to be a grandparent.2.What do theEastandI Cook in Colorhave in common?A.They offer recipes about Asian cuisines.B.They center on cooking vegetables.C.They are the author's first cookbooks.D.They are based on the author's travel experiences.3.Which book can you refer toif you just have limited time for cooking?A.Be My Guest.B.East.C.I Cook in Color.D.Time to Eat.BIn the Hollywood industry, most of the studios are using AI to make movies for various reasons such as getting the actors out of danger, replacing the actors indifferent scenes, forming appealing atmosphere to enhance(增强)the views, etc.Directors and producers are using VFX (Visual effects), animations and AI to makea model that looks like the actor and replaces the actor's place. In particular, AI is used in scenes where actor shave to produce certain stunts (特技)to develop setups in the studio artificially. VFX is used to later change the internal studio backgroundsto a different place in the movie.There are many movies with two characters of the same actor. When AI was not a part of the film, editors used different methods to show the two aspects of the same actor in one scene, but now AI is being used to form the second character of the same actor and is being performed to the viewers.By a perfect combination of animation, VFX and AI, realistic models are being created. And the most fun part is the fictitious character can hold the face of the actor but the age, hairstyles, and clothing can be changed to create more enhanced looks according to the movie scene and story. With the help of AI, the directors recreating appealing scenes to enhance the thrill and excitement. InJurassic Park,no dinosaurs were running but with the help of AI and visual effects, we could enjoy the scenes and the atmospheres.The directors and the producers direct to form a green screen including the obstacles and those green screens get replaced with the views that are made from AI and VFX, and the actors make the scenes alive and deliver the most suitable action-packed movie scenes. This method also enhances the viewers' experience, which makes the movie a blockbuster(大片).4. What does the author intend to tell us in paragraph 1?A. How AI helps actors.B. What AI brings to movies.C. Why AI is applied to movies.D. Where AI is made full use of.5. What can we infer from paragraph 3?A. AI can be used as an editor.B. Editors consider AI irreplaceable.C. Editors used many methods to replace AI.D. AI makes what used to be complex scenes easier.6. What's the author's attitude to using VFX, animations and AI in movies?A. Supportive.B. Sceptical.C. Unconcerned.D. Enthusiastic.7. Which of the following could be the best title for thetext?A. What AI Brings Out Hollywood MoviesB. Why AI Is Applied to Hollywood MoviesC. Which Hollywood Movies Make Much Use of AID. How AI Is Being Applied to Hollywood MoviesCImagine that youare a superhero. Your superpowers are activated by a special suit. The suit communicates with your brain. It allows you to do amazing things with only a thought. By concentrating on strength, for example, you can kick a soccer ball across a field. By focusing on swift actions, you can jump to the top of a tree.Such a connection between mind and machine may sound like a fantasy. To scientists, though, it is a very real goal. They are creating machines that let disabled monkeys walk. These machines may soon help disabled humans do the same. Unlike other bionic devices, these robotic “super suits” do not communicate with muscles and nerves. Instead, they have a direct line to the brain.In 2005, doctors drilled a hole in the skull of Hutchinson, who had lost her right arm in an accident. Then they inserted a sensor onto her motor cortex (大脑皮层运动区). Wires connected the sensor to a receiver on her head. After she recovered, researchers pluggedHutchinson’s receiver into a cable that relayed signals from her brain to computers. Then they connected a robotic arm to the computers. The computerscould interpretHutchinson’s brain signals to move the arm.Soon,Hutchinson, the computer, and the robotic arm became a team.Hutchinsonwas even able to lift herhand and drink from a cup. “She smiled when she put down that drink—that’s everything.” says Donoghue, a brain scientist.Today other scientists are building on that success. One of those scientists is Dr. Miguel Nicolelis, who designed a whole-body bionic equipment. In 2014, a disabled former athlete kicked the first ball of the World Cup Games wearing one of Miguel’s full-body exoskeletons.The exoskeleton was connected to brain signal sensors in the man’s cap. By thinking about kicking, he sent signals to a computer on his back. The computer then translated the signal into an exoskeleton-aided kick. Such designs may become common as scientists keep merging mind and machine.8.Which can best describe the tone of paragraph 1?A. Narrative and serious.B. Persuasive and critical.C. Informative and objective.D. Descriptive and imaginative.9. What is paragraph 3 mainly about?A. Reason of the experiment.B. Results of the experiment.C. Process of the experiment.D. Significance of the experiment.10. Why is Dr. Miguel’s exoskeleton special?A. It can be used on animals.B. It can move the whole body.C. It was supported by computers.D. It was connected directly to the brain.11. What can be inferred from the last paragraph?A. Robotic suits may be widely used to help disabled people.B. Exoskeleton is more common thanHutchinson’s bionic arm.C.Scientific experiments are commonly carried out in football fields.D. Disabled athletes can now play football again with the help of computer.DIt was the first day of spring here but it didn't feel like it. The COVID-19 epidemic (流行病) was sweeping the globe and everywhere there were feelings of fear and loneliness. “Social Distancing” had become the new norm. Here the schools had been closed, the restaurant dining rooms had been shut, and people had been told to workfrom home whenever they could. Even the sheltered workshop where my oldest son worked had been closed until further notice. People had made a run on the stores and large areas of the shelves were bare. On the news the numbers of the sick and dead continued to rise. It felt like there was a weight on the souls of everyone in the world.My family were staying at home as much as possible and as I looked out of my window I wondered how long this crisis would last. It was then, however, that I saw something that lifted that weight off of my soul, made me smile, and made my heart feel happy again. On the street below my house there was an old friend of mine from high school who was a teacher there. With him was my younger son's former aide from the high school as well. They were delivering the school lunches door to door to the hungry children who were stuck at home. Watching them made me think of something everyone's childhood television neighbor, Mr. Roger's once said: "In the bad times, always look for the helpers."I have no doubt that this crisis will pass as all the crisis before. But it is our choice on whether it brings out the best in us or the worst in us. Let it bring out the best in you. Use it to strengthen your faith. Use it to free yourself from fear. Use it to grow kinder, more giving, and more loving. Become a helper to all those in need and you will be a happy person today and all the days to come.12. Why didn't the author like the first day of spring?A. He had to work at home instead of at office.B. There wasn't social distance between each other.C. There was an epidemic everywhere in the world.D. His own company had been closed for a long time.13. How did people feel in the face of the epidemic?A. Disappointed.B. TenseC. Confident.D. Cheerful.14. What made the author happy?A. Seeing someone delivering lunches from door to door.B. Talking with his old friend in the street.C. Watching a childhood television at home.D. Staying together with his family.15. What do Mr. Roger's words actually mean?A. It's not necessary for us to find helpers in bad times.B. In good times we needn't do much to help others.C. We should ask more people to help us in bad times.D. We are supposed to help each other in bad times.第二节(共5小题;每小题2分,满分10分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。

重庆市第一中学2020届高三上学期期末数学(理)试题及答案

重庆市第一中学2020届高三上学期期末数学(理)试题及答案

55
得 AC2 = AD2 + DC2 − 2 AD ⋅ DC ⋅cos ∠ADC = 5 + 1+ 2 × 5 × 1× 5 = 8 ,∴ AC = 2 2 ………12 分 5
18.解:(1)甲的中位数是 119,乙的中位数是 128,乙的成绩更好………………2 分
(2)乙频率分布直方图如右图所示 …………………4 分 (3)甲乙不低于 140 分的成绩共 5 个, 则 ξ 的取值为 0,1,2
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.
2.复数 在复平面内对应的点为
A. (1, 1)
B. (1,1)
C. (1, 1)



3.已知向量 a (1, m) 乙 b=(3, 2) ,且 (a b) b ,则
= sin ∠BAD cos ∠ADB + cos ∠BAD sin ∠ADB = 4 × 5 + 3 × 2 5 = 2 5 ………………. ………6 分 555 5 5
(2)在
ΔABD
中,由正弦定理得:
AD sin B
=
BD sin ∠BAD
,即
AD 25
=
2 4
,∴
AD
=
5 . 在 ΔADC 中,由余弦定理
(0 ! x ! 2) ,此时
f
( x )max
=
f (1) = 1 ;当 x ! 0 时,
f
(x + 2) =
1 3
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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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