北京市清华附中2019-2020学年高一年级第一学期G19级高中入学适应性检测
北京市清华附中2019-2020学年高一年级第一学期G19级高中入学适应性检测
G19级高中入学适应性检测物理试卷一、单选题（每题 3分，共33分）1 .以下的物理中，不是矢量的是（ ）A.瞬时速度B.力C.路程D.加速度2 .如图所示，汽车向右沿直线运动，原来的速度是 M ,经过一小段时间之后，速度变为V2 , Av 表示速度的变化量。
由图中所示信息可知（）「vi----------------------- *■---------- -------- 7 ---A.汽车在做加速直线运动 ”&材C.汽车的加速度方向与 Av 的方向相同D.汽车的加速度方向与 Av 的方向相反3 .以下关于速度的大小和速率的说法中，正确的是（ A.平均速度的大小等于平均速率 B.平均速度的大小大于等于平均速率 C.瞬时速度的大小小于等于瞬时速率 D.瞬时速度的大小等于瞬时速率4 .下列说法中正确的是（ ）A.加速度增大，速度一定增大B.速度变化量越大，加速度一定越大C.物体有加速度，速度就增大D.物体的速度很大，加速度可能为2019.9.29B.汽车的加速度方向与 V i 的方向相同5.物体沿直线做加速运动，当加速度逐渐减小时，物体的速度和位移的变化是（A •速度增大，位移增大B.速度减小，位移减小C.速度减小，位移增大D.速度增大，位移减小6.飞船返回地面时，为保护舱内仪器不受损坏，在靠近地面附近时，返回舱会自动放出降落伞减速，若返回舱离地面4km时，速度方向已竖直向下，大小为200m/s,此时返回舱将降落伞打开，设打开降落伞后返回舱做匀减速运动，要使返回舱以最安全最理想的方式着陆，则打开降落伞后飞船运动的加速度大小应为（）2 2 2 2A. 2.5m/sB. 5m/sC.10m/sD. 15m/sm-s J7.A、B两个物体在同一直线上作匀变速直线运动，它们的速度图像如图所示,则（）A. t=4s时，.A、B两物体的速度相同8.头4s内A、B两物体的位移相同C..A、B两物体运动方向相反D.A物体的加速度比B物体的加速度大8.如图所示，一个小球从光滑斜面上的A点由静止开始做匀加速直线运动，加速度大小为0.4m/s2,经过3s后到达斜面底端B点，并开始在水平地面上做匀减速直线运动，又经过9s停在C点。
【20套试卷合集】北京市清华附中2019-2020学年数学高一上期中模拟试卷含答案
2019-2020学年高一上数学期中模拟试卷含答案本试卷分基础检测与能力检测两部分，共4页．满分为150分．考试用时120分钟． 注意事项：1．答卷前，考生务必用黑色字迹钢笔或签字笔将自己的姓名和考生号填写在答卷上，并用2B 铅笔填涂学号． 2．选择题每小题选出答案后，用2B 铅笔把答题卡上对应题目的答案标号涂黑；如需改动，用橡皮擦干净后，再选涂其它答案标号，不能答在试题卷上．3．非选择题必须用黑色字迹的钢笔或签字笔作答，答案必须写在答题卡各题目指定区域内的相应位置上；如需改动，先划掉原来的答案，然后写上新的答案；不准使用铅笔和涂改液．不按以上要求作答的答案无效．第一部分 基础检测(共100分)一、选择题：本大题共10小题，每小题5分，共50分，在每小题给出的四个选项中，只有一项是符合题目要求的．1．已知集合{|1}A x x =>，下列关系中正确的为( ) A ．1A -∈B ．0A ∈C ．1A ∈D ．2A ∈．2．二次函数225y x x =-+的值域是( ) A ．[4，＋∞)B ．(4，＋∞)C ．(,4]-∞D ．(－∞，4)3．设集合}21|{≤≤=x x A ，}41|{≤≤=y y B ，则下述对应法则f 中，不能构成A 到B 的映射的是( ) A ．2:x y x f =→B ．23:-=→x y x fC ．4:+-=→x y x fD ．24:x y x f -=→4．设{}|10A x x =-<，{}2|log 0B x x =<，则B A ⋂等于( ) A ．{|01}x x <<B ．{|1}x x <C ．{|0}x x <D ．∅5．不等式220ax bx ++>的解集是)31,21(-，则a b +的值是( ) A ．10B ．–10C ．14D ．–146．三个数20.620.6,log 0.6,2a b c ===之间的大小关系是( )A ．b c a <<B ．c b a <<C ．c a b <<D ．a c b <<7．设1322,2()((2))log 2.(1)x e x f x f f x x -⎧⎪=⎨≥⎪-⎩＜，则的值为1，( ) A ．2eB ．22eC ．2D ．22e8．下列函数中既是偶函数又是（－∞，0）上是增函数的是 ( ) A ．y x =43B ．y x =32C ．y x =-2D ．y x=-149．函数xxa y x=(01)a <<的图象的大致形状是( )10．若)(x f 是R 上的减函数，且)(x f 的图象经过点A (0，4)和点B (3，－2)，则当不等式3|1)(|<-+t x f 的解集为(－1，2)时，t 的值为( ) A ．0B ．－1C ．1D ．2二、填空题：本大题共4小题，每小题5分，共20分． 11．已知22)1(++=-x x x f ，则()f x ＝___________．12．若01a <<，则函数log (5)a y x =+的图象不经过第_______象限．13．函数)(x f ＝(]1,,212∞-∈-+x x x 的值域为__________________． 14．若函数(1)y f x =-的定义域为(1，2]，则函数1()y f x=的定义域为______．三、解答题：本大题共3小题，共30分．解答应写出文字说明、证明过程或演算步骤． 15．化简或求值：(本题满分8分)(1)252)008.0()949()827(325.032⨯+---(2)计算1.0lg 21036.0lg 21600lg )2(lg 8000lg 5lg 23--+⋅．16．(本题满分10分)已知集合{}24260,A x x ax a x R =-++=∈，集合{}0B x x =<，若AB ≠∅，求实数a 的取值范围．17．(本小题满分12分)(1)判断函数f (x )＝x x 4+在),0(+∞∈x 上的单调性并证明你的结论？ (2)猜想函数)0(,)(>+=a xax x f 在),0()0,(+∞⋃-∞∈x 上的单调性？(只需写出结论，不用证明)(3)利用题(2)的结论，求使不等式0292<+-+m m xx 在][5,1∈x 上恒成立时的实数m 的取值范围？第二部分 能力检测(共50分)四、填空题：本大题共2小题，每小题5分，共10分．18．已知函数f (x )＝12++mx mx 的定义域是一切实数，则m 的取值范围是_______19．设偶函数()log ||a f x x b =+在(0，＋∞)上单调递增，则f (b －2)_____f (a ＋1)(填等号或不等号) 五、解答题：本大题共3小题，共40分．解答应写出文字说明、证明过程或演算步骤． 20．(本小题满分13分)已知函数)(x f 对任意实数x 、y 都有)(xy f ＝)(x f ·)(y f ，且(1)1f -=，(27)9f =，当01x ≤<时，0≤)(x f ＜1．(1)判断)(x f 的奇偶性；(2)判断)(x f 在[0，＋∞)上的单调性，并给出证明； (3)若0a ≥且)1(+a f ≤39，求a 的取值范围．21．(本题满分13分)设a ∈R ，函数 f (x )＝x 2＋2 a | x －1 |，x ∈R ．(1)讨论函数f (x )的奇偶性； (2)求函数f (x )的最小值．22．(本小题满分14分)已知函数 ⎪⎪⎪⎩⎪⎪⎪⎨⎧∈--∈---∈+=]2,21[,1)21,1[,2)1,2[,1)(x x x x x x x x f ．(1)求()f x 的值域；(2)设函数()2g x ax =-，[2,2]x ∈-，若对于任意1[2,2]x ∈-，总存在0[2,2]x ∈-，使得01()()g x f x =成立，求实数a 的取值范围．2019-2020学年高一上数学期中模拟试卷含答案一、选择题（本大题共12小题，每小题5分，满分60分）1．已知全集},2,1,0{},4,3,2,1,0{==M U }3,2{=N 则=⋂N M C U )(（ ）A ． {}2B ． {}3C ． {}432，，D ． {}0,1,2,3,4 2．集合M ＝{y|y ＝x 2－1，x ∈R}，集合N ＝{x|y ＝9－x 2，x ∈R}，则M ∩N 等于( )A ．{t|0≤t ≤3}B ．{t|－1≤t ≤3}C ．{(－2，1)，(2，1)}D ．∅3.设集合A ＝B ＝{(,),}x y x R y R ∈∈，从A 到B 的映射:(,)(2,2)f x y x y x y →+-， 则在映射f 下B 中的元素（1，1）对应的A 中元素为（）A.（1，3）B.（1，1） C .31(,)55D.11(,)224.下列四组函数，表示同一函数的是（） A. 22)(,)()(x x g x x f == B. x x g x x f lg 2)(,lg )(2==C. 4)(,22)(2-=-⋅+=x x g x x x f D. 33)(,)(x x g x x f ==5． 下列函数是偶函数的是（ ）.A ． 322-=x y B ． x y = C ． 21-=x y D ．]1,0[,2∈=x x y 6．已知函数，则A ．−2B ．4C ．2D ．−17.函数 f(x)=x 2-4x+5在区间 [0,m]上的最大值为5，最小值为1，则m 的取值范围是（ ） A . ),2[+∞ B . [0,2] C .(]2,∞- D. [2,4]8．三个数3.0222,3.0log ,3.0===c b a 之间的大小关系是（ ）.A ．b c a <<．B ． c b a <<C ． c a b <<D ．a c b <<9．函数()x bf x a -=的图象如图所示，其中,a b 为常数，则下列结论正确的是（ ）. A ．1>a ,0<b B ．1>a ,0>bC ．10<<a ,0>bD ．10<<a ,0<b10． 已知奇函数()f x 在0x ≥时的图象如图所示，则不等式()0xf x <的解集为（ ）.A ．(1,2)B ．(2,1)--C ．(2,1)(1,2)-- D ．(1,1)-11．已知函数()3,0,0xx a x f x a x -+≥⎧=⎨<⎩是(),-∞+∞上的减函数，则实数a 的取值范围是（） A ．()0,1 B ．10,3⎛⎤ ⎥⎝⎦ C ．1,13⎡⎫⎪⎢⎣⎭ D ．1,3⎡⎫+∞⎪⎢⎣⎭12．如果集合A ，B 同时满足：A ∪B={1，2，3，4}，A ∩B={1}，A ≠{1}，B ≠{1}，就称有序集对(A ，B)为“好集对”，这里有序集对(A ，B)意指：当A ≠B 时，(A ，B)和(B ，A)是不同的集对．那么“好集对”一共有（）A ．5个B ．6个C ．7个D ．8个二、填空题（每题5分，满分20分，将答案填在答题纸上）13．已知函数y ＝2+x a －2 (a>0， a ≠1)的图象恒过定点A ，则定点A 的坐标为__________．14．设函数()()2,11,1x x f x x x -<⎧⎪=⎨-≥⎪⎩，若()1f α=，则实数α的值为是______． 15.若1052==ba , 则=+b a 11______. 16．已知函数(),y f x x R =∈，给出下列结论（1）若对任意12,x x ，且12x x ≠，都有2121()()f x f x x x -<-，则()f x 为R 上的减函数；（2）若()f x 为R 上的偶函数，且在(,0)-∞内是减函数，f （-2）=0，则()f x >0解集为（-2,2）；（3）若()f x 为R 上的奇函数，则()()y f x f x =∙也是R 上的奇函数；（4）t 为常数，若对任意的x ,都有()(),f x t f x t -=+则()f x 关于x t =对称。
【期中精品真题】北京市清华附中2019-2020学年数学高一上期中模拟试卷含答案
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2020年北京市海淀区清大附中高考英语适应性试卷(附解析)
2020年北京市海淀区清大附中高考英语适应性试卷一、阅读理解（本大题共15小题，共30.0分）AGet involved with our researchSome of our research projects rely on the generosity of people like you.Whether it's using your home PC，taking part in a clinical trial,or simply volunteering your time for a study,you may be able to contribute to some of the ground-breaking projects which make the University of Oxford a world leader in research.Watch this space for ways in which you could get involved.Seeking poor sleepers for insomnia（失眠）researchTrouble sleeping？Researchers from the Sleep&Circadian Neuroscience Institute are evaluating different interventions aimed at improving sleep.We are looking for poor sleepers between the ages of18and65．Participation will involve spending overnights in the sleep laboratory at Oxford,monitoring your sleep/wake cycle,and completing computerised tasks.If you are interested,please contact the research team at insomnia@Volunteers with lazy eye wantedWe are looking for volunteers with a history of lazy eye to take part in our brain scanning study.We are looking for healthy volunteers aged18-45with a history of lazy eye.You will also be asked questions about your medical history to check your suitability for an MRI scan. Call01865223622for more information.Oxford Vaccine GroupThe Oxford Vaccine Group is an independent multi-disciplinary（多学科的）clinical trials group.OVG works towards the goal of developing new and improved vaccines for the prevention of infection in adults and children,enhancing the understanding of immunity and studying the epidemiology of infectious diseases.To get more information, please see the OVG website.Oxford Experimental lab for the Social SciencesThe Oxford Internet Institute,together with the Business School,is recruiting individuals to participate in computer-based experiments involving online surfing behavior as well as economic and political decision-making.We pay our subjects well,there are no special skillsrequired and you don't have to come to the lab in person Contact us at socialscience.study@ for more information.1.What is the main purpose of the passage？______A.To offer medical help to patients.B.To look for experienced researchers.C.To introduce new research programs.D.To recruit volunteers for research projects.2.The goal of OVG is to______．A.carry out clinical trialsB.produce better vaccinesC.learn more about infectionD.study the causes of diseases3.You can finish the experiment on your home PC if you join______．A.Oxford Vaccine GroupB.Insomnia research groupC.Oxford Experimental labD.Brain Scanning study groupBMy daughter was being thrown out of the sixth grade.The teacher said,"She may not be up to what we're trying to accomplish."He was really saying she didn't have the intelligence.I got mad because I knew she was smart,just as my father had known I was smart when I was failing in school.We had her tested.I decided to get myself tested as well,and found that the troubles she was having were exactly what I had had-dyslexia.By then I was a successful television writer,and had won an Emmy Award for"The Rockford Files."If I had known earlier that something beyond my control could explain why I was a low achiever,I may not have worked so hard in my late20s and early30s.I was writing and writing.I was working for no other reason than to hear people praise me,because I did badly in all my courses.I once asked a friend who had always gotten an A，"How long did you study for this？"He said,"I didn't.I just glanced at it."So he must be smarter.I began to ask,"What will happen to me when I'm not good at anything？" Despite my doubts,I did become successful,and people now say to me,"So you've overcome dyslexia."No.You don't overcome it,you learn to compensate for it.Some easy things are very hard for me.Most people who go through college read twice as fast as I do.I avoid dialing a phone if I can,because I sometimes have to try three times to get the number right.Despite my weaknesses I view dyslexia as a gift,not a curse（诅咒）．Many dyslexics are good at right-brain,abstract thought,and that's what my kind of creative writing is.And I can write quickly,and can get up to15pages a day.Writing is my strength.The real fear I have for dyslexic children is not they have to struggle in school,but that they will quit on themselves before they get out of school.Parents have to create victories for them, whether it's music,sports or art.You can make your dyslexic child able to say,"Yeah,reading is hard.But I have other things I can do."4.The writer decided to get himself tested as well because he______．A.wanted to know if they had the same problemB.didn't believe his daughter had the problemC.had to take a regular medical examinationD.accepted that his daughter was not smart5.We can learn from the second paragraph that the writer______．A.struggled and got better gradesB.didn't work hard when he was youngC.was praised for overcoming dyslexiaD.was thankful not knowing of dyslexia earlier6.According to the passage,a dyslexic person______．A.is less intelligentB.always fails in schoolC.reads more slowly than normal peopleD.performs worse in left-brain activities7.What can we learn from the story？______A.Clumsy birds have to start flying early.B.God shuts one door but opens another.C.Never judge a person by his appearance.D.No one can make a good coat with bad cloth.CAlthough it has been revealed in recent years that plants are capable of seeing,hearing and smelling,they are still usually thought of as silent.But now,for the first time,they have been recorded making ultrasonic（超声的）cries when stressed,which researchers say could open up a new field of precision agriculture wherefarmers listen for water-starved crops.Itzhak Khait and his colleagues at Tel Aviv University in Israel found that tomato and tobacco plants made cries at frequencies humans cannot hear when stressed by a lack of water or when their stem it cut.Microphones placed10centimetres from the plants picked up sounds in the ultrasonic rangeof20to100kilohertz,which the team says insects and some mammals would be capable of hearing and responding to from as far as5metres away.A moth may decide against laying eggs on a plant that sounds water-stressed,the researchers suggest.Plants could even hearthat other plants are short of water and react accordingly,theyspeculate（推断）．On average,drought-stressed tomato plants made35sounds an hour,while tobacco plants made11．When plant stems were cut,tomato plants made an average of25 sounds in the following hour,and tobacco plants15Unstressed plants produced fewer than one sound per hour,on average.It is even possible to distinguish between the sounds to know what the stress is.The researchers trained a machine-learning model to recognize between the plants'sounds and the wind,rain and other noises of the greenhouse,correctly identifying in most cases whether the stress was caused by dryness or a cut,based on the sound's intensity and frequency.Water-hungry tobacco appears to make louder sounds than cut tobacco,for example. Enabling farmers to listen for water-stressed plants could"open a new direction in the field of precision agriculture"，the researchers suggest.They add that such an ability will be increasingly important as climate change exposes more areas to drought. "The suggestion that the sounds that drought-stressed plants make could be used in precision agriculture seems feasible（可行的）if it is not too costly to set up the recording in a field situation,"says Anne Visscher at the royal Botanic Gardens,Kew,in the UK．She warns that the results can't yet be broadened out to other stresses,such as salt or temperature,because these may not lead to sounds.In addition,there have been no experiments to show whether moths or any other animal can hear and respond to the sounds the plants make,so that idea remains based on guesses for now,she says.8.The experiment by researchers at Tel Aviv University shows that______．A.tomato plants cry more often than tobacco when hurtB.plant sounds can be heard by plants quite far awayC.humans can hear water-hungry plants cryingD.moths like laying eggs on stressed plant9.What is Anne Visscher's attitude towards the finding of the experiment？______A.Disappointed.B.Cautious.C.Appreciative.D.Optimistic.10.Taking advantage of the new research finding,farmers can______．A.harvest crops in timeB.reduce greenhouse effectsC.diagnose plant condition fasterD.detect and remove insects easily11.Which of the following would be the best title for the passage？______A.Plants get stressed Just Like USB.Sounds of Plants Detected Far AwayC.Cries of plants break Farmers'HeartsD.Plants scream in the presence of stressDThe first patient who died on my watch was an older man with a faulty heart.We tried to slow it down with treatment,but it suddenly stopped beating ter,whenever I would have a case like that one,I found myself second-guessing my clinical management. However,it turns out that thinking twice may actually cause more harm than good.In a working paper,Emory University researchers found that when doctors delivering a baby have a bad result,they are more likely to switch to a different delivery method with the next patient,often unnecessarily and sometimes with worse results.Because doctors make so many decisions that have serious consequences,the fallout from second-guessing appears especially large for us.A2006study found that if a patient had a bleed after being prescribed（开药）warfarin,the physician was about 20%less likely to prescribe later patients the blood thinner that preventsstrokes（中风）．However,if a patient was not on warfarin and had a stroke physicians were still no more likely to prescribe warfarin to their other patients.These findings highlight interesting behavioral patterns in doctors.In the blood-thinner study,doctors were more affected by the act of doing harm（prescribing a blood thinner that ended up hurting doctors were more affected by the act of doingharm（prescribing a blood thinner that ended up hurting apatient）and less affected by letting harm happen（not prescribing a blood thinner and the patient having a stroke）．Yet a stroke is often more permanent and damaging than a bleed.But this phenomenon is not unique to medicine."Overreaction to Fearsome Risks"holds true for broader society.For instance,sensational headlines about shark attacks on humans in Florida in2001caused a panic and led the state to prohibit shark-feeding expeditions.Yet shark attacks had actually fallen that year and,according to the study,such a change was probably unnecessary giventhe extremely small risk of such an attack happening.Humans are likely to be influenced by emotional and often irrational（不理性的）thinking when processing information,bad events and mistakes.As much as we don't want to cause an unfortunate event to happen again,we need to be aware that a worst situation that can be imagined doesn't necessarily mean we did anything wrong.When we overthink,wefail to rely on thinking based on what we know or have experienced.Instead,we may involuntarily overanalyze and come to the wrong conclusion.I have treated dozens of patients who presented with the same illnesses as my first patient, who died more than a year ago.Instead of second-guessing myself,I trusted my clinical instinct（本能）and stayed the course.Every one of those patients survived.You should trust your instinct in your life,too.12.The first two paragraphs suggest that______．A.bad medical outcomes affect doctorsB.delivering babies can be difficult workC.some doctors are not very experiencedD.doctors sometimes make silly mistakes13.In the blood-thinner study,doctors______．A.tend to prescribe less effective medicineB.are more concerned about the patients'safetyC.become less confident in writing a prescriptionD.believe a stroke is more treatable than a bleeding14.What does the underlined word"fallout"in Paragraph3probably mean？______A.ResultB.BenefitC.DifferenceD.Absence15.The author will probably agree that______．A.we should not doubt our own decisionsB.our experience will pave way for our futureC.humans are emotional and irrational on the wholeD.instincts don't necessarily lead to wrong directions二、阅读七选五（本大题共5小题，共10.0分）The way individuals collectively remember,forget,and recall event,people,places,etc,has been an important topic of research on collective memory.(1)He developed the concept of collective memory,arguing that individual memories are only understood within the context of a group through time and space.In all cases,most research on memory studies relies on long procedures.(2)They include theoretical concepts,the study of historical sources,oral histories,case studies,interviews,and surveys.For example,one group of researchers carried out several interviews to investigate younger and older American adults for three wars, namely,the Civil War,World WarⅡ，and the Iraq War.(3)Both younger and older adults recalled the bombings of Hiroshima and Nagasaki；however,they differed in how they rated the bombings.More recently,memory study scholars tend to stress the significance of the media in shaping collective memories："Culture and individuals'memory are constantly produced through the technologies of memory."Under this perspective,research often involves content analysis of news and the use of surveys or interviews for analyzing the public memory.(4)However,developments in digital technologies in recent years have significantly influenced how we keep track of events both as individuals and as a collective."The Internet doesn't forget."The Internet has had strong impacts on memory and the processes of remembering and forgetting.(5)Analyzing different Web documents,researchers have shown that more recent past events are remembered more vividly in the present.A．Research on collective memory is often based on various aspects.B．There are a few simple things a person can do to help improve their memory.C．Maurice Halbwachs is recognized as the father of collective memory research. D．Although all Americans recalled similar events,the interpretation changed over the generations.E．Also,scholars have studied the role of journalists as collective memory agents by analyzing their stories.F．Recently developed information technologies have affected how we create,store and recall information.G．Meanwhile,it has transformed collective memory into an observable phenomenon that can be tracked and measured online.16. A.A B.B C.C D.D E.E F.F G.G17. A.A B.B C.C D.D E.E F.F G.G18. A.A B.B C.C D.D E.E F.F G.G19. A.A B.B C.C D.D E.E F.F G.G20. A.A B.B C.C D.D E.E F.F G.G三、完形填空（本大题共20小题，共30.0分）I Have Two Names Oyindasola means"Honey poured into my wealth."It's fairly common Nigerian（尼日利亚的）name,mainly used for girls.(21)，I'm known as Oyindasola but my nickname is Chelsea.Some ask why I don't use my real(22)and I tell them what my father told me：a story about him(23)Chelsea,South West London a year after I was born.I tell them that this nickname spoke to him so much that it(24)on every birthday cake of mine.When I was seven,inside the brick walls of our townhouse in New York,we decided to(25) to Nigeria.And my mother needed to know what my family there would call me.The nickname I'd been called for as long as I could(26)or the complex name on my passport？A simple question.But it tore me apart.A week later we found ourselves at an airport with groups of Nigerians speaking as we(27) for our cab.After a week of getting used to the spicier foods,and sharper scents,I fell into(28)．Soon,my memories of Disney in America were(29)with sounds of Nigerian music.My tongue grew heavier with Nigerian(30)，and the words shared between my mother and grandmother in their native tongue finally(31)．But,I still wasn't Nigerian enough.Their unfriendly looks and(32)were a constant reminder of who I was：an American girl with the westernized name.So I wasn't(33)sad when my mother announced our back to America for her work.On the first day of middle school in America,(34)coursed through me because I knew my birth name wouldn't(35)the attendance list just as I couldn't fail to draw others'attention.I was(36)when the teacher mispronounced my painfully long name and my classmates laughed. But with every passing year,came new(37)．Every new attendance roll（考勤）call was responded with a braver voice and a(38)smile.That long name,mispronounced or not,is mine.The Nigerian accent slipping through is mine.Who I am is simple：a Nigerian girl with(39)to the American dream,a girl with two(40)and two names.21. A.Luckily B.Frankly C.Legally D.Obviously22. A.origin C.identity D.signature23. A.visiting B.describing C.abandoning D.leaving24. peted B.happened C.passed D.appeared25. A.drive B.move C.pace D.walk26. A.imagine B.predict C.remember D.survive27. A.headed B.answered C.changed D.turned28. A.conversations B.chaos C.desperation D.routine29. A.connected B.replaced C.faced D.decorated30. A.recreation B.lifestyle C.accent D.diet31. A.made sense B.took shape C.died away D.ran out32. A.gifts B.decisions C.negotiations D.remarks33. A.rarely B.really C.perfectly D.nervously34. A.anxiety B.disappointmentC.rudenessD.shock35. A.form B.throw C.ruin D.escape36. A.guilty B.regretful C.embarrassed D.confused37. A.sympathy B.confidence C.generosity D.honesty38. A.kinder B.weaker C.wider D.friendlier39. A.reaction B.objection C.response D.access40. nguages B.advantages C.degrees D.occupations四、语法填空（本大题共1小题，共15.0分）41.A Books were my true friends back then I was so(1)（thank）that the authors wrotethose books.The kindness they offered me with their books saved my life.Aftersurviving terrible experiences at school and at home,I(2)（make）a choice to take the optimistic,positive road in the next steps of my journey.My dream career,one I thought was only possible for the authors I loved is what I am doing now.I have been a full-time author of teen novels since2007and am grateful(3)this amazing opportunity to reach out to readers every single day.B Robots have certain advantages compared to humans：They are efficient,tireless,can be repaired when(4)（damage）and they never get sick.This last trait has made them the star during our fight against the COVID-19pandemic.While thousands of medical workers have fallen ill(5)（deal）with this highly infectious virus and a lot more are forced to stay at home for fear of getting the disease,this isn't a problem forrobots.This is(6)the COVID-19outbreak is seen as the"tipping point"for robots tostart to replace humans in certain jobs.CAnimal Crossing：New Horizons attracts numerous young gamers globally.It's a low-pressure life simulation（模拟）game(7)gamers are free to fill the days however they like.Gamers can do anything they want,including checking in with friends and interacting with many animal(8)（assist）．Days(9)（spend）on an island catching fish,picking fruit and growing crops.The informal,conflict-free format of the game sets it apart from other popular games,but without a doubt it successfully delivers joy and faith to the public during this time of social distancing,with(10)（it）simple and warm features.五、书面表达（本大题共2小题，共35.0分）42.假设你是红星中学高三学生李华，你的英国好友Jim得知北京开展垃圾分类活动，发来邮件询问相关信息，请你给他回复邮件，内容包括：1、垃圾分类的相关信息（分类标准、社区宣传……）；2、你对垃圾分类的看法．注意：1．词数不少于50；2．开头和结尾已给出，不计入总词数．Dear Jim,_______Yours,Li Hua43.假设你是红星中学高三学生李华．你们学校上周组织了一场"校园运动周"活动．请根据以下四幅图的先后顺序，写一篇英文周记，记述整个过程．注意：词数不少于60．提示词：踢毽shuttlecock kicking跳绳rope skipping抖音Tik Tok答案和解析1.【答案】【小题1】D【小题2】B【小题3】C【解析】（1）D．写作意图题。
北京市清华附中将台路校区2019-2020学年高一上学期期中考试数学试题含解析
2019清华附中将台路校区高19级高一数学第一学期期中考试一、选择题：本大题共8小题，每小题5分，共40分.1.若集合{|12}A x x =-<<，{2,0,1,2}B =-，则A B =I （ ）A. ∅B. {0,1}C. {0,1,2}D. {2,0,1,2}-【答案】B【解析】【分析】根据题意，利用交集定义直接求解。
【详解】集合{|12}A x x =-<<，{}2,0,1,2B =-，所以集合{}0,1A B =I 。
【点睛】本题主要考查集合交集的运算。
2.已知函数2()f x x =，{}1,0,1x ∈-，则函数的值域为（ ）A. {}1,0,1-B. [0,1]C. {}0,1D.[0,)+∞【答案】C【解析】【分析】分别代入1,0,1-求得()f x 即可.【详解】由题222(1)(1)1,(0)(0)0,(1)11f f f -=-=====,故值域为{}0,1 故选：C【点睛】本题主要考查函数的值域,属于简单题型.3.已知命题p ：“2,20x R x ∀∈+>”，则命题p 的否定为A. 2,20x R x ∀∈+≤B. 200,20x R x ∃∈+>C. 200,20x R x ∃∈+≤D. 2,20x R x ∀∈+<【答案】C【解析】【分析】运用全称命题的否定为特称命题，以及量词和不等号的变化，即可得到所求命题的否定．【详解】由全称命题的否定为特称命题可得命题p ：“2,20x R x ∀∈+>”的否定为200,20x R x ∃∈+≤，故选C ．【点睛】本题考查命题的否定，注意全称命题的否定为特称命题，以及量词和不等号的变化，考查转化思想，属于基础题．4.在区间()0,∞+上是减函数的是（）A. 31y x =+B. 231y x =+C. 2y x =D.2y x x =+【答案】C【解析】【分析】根据一次函数、二次函数和反比例函数性质即可得到结果.【详解】31y x =+在()0,∞+上单调递增，A 错误；231y x =+在()0,∞+上单调递增，B 错误2y x =()0,∞+上单调递减，C 正确；2y x x =+在()0,∞+上单调递增，D 错误本题正确选项：C【点睛】本题考查常见函数单调性的判断，属于基础题.5.已知条件:1p x >，条件:2q x ≥，则p 是q 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【答案】B【解析】【分析】利用集合间的关系推出p q 、之间的关系.【详解】{|1}x x >Ý{|2}x x ≥，则p 是q 的必要不充分条件,故选：B .【点睛】p 成立的对象构成的集合为A ，q 成立的对象构成的集合为B ：p 是q 的充分不必要条件则有：A B Ü；p 是q 的必要不充分条件则有：B A Ü.6.若0a >，0b >，2ab =，则2+a b 的最小值为（）A. B. 4C. D. 6 【答案】B【解析】【分析】由a +2ba +2b 的最小值．详解】∵a ＞0，b ＞0，ab ＝2，∴a +2b 4=，当且仅当a ＝2b ＝2时取等号，∴a +2b 的最小值为4．故选：B ． 【点睛】本题考查了基本不等式的应用，关键是等号成立的条件，属基础题． 7.定义在R 上的奇函数()f x 满足2()2(0)f x x x x =-…，则函数()f x 的零点个数为（ ） A. 0 B. 1C. 2D. 3【答案】D【解析】【分析】 根据题意，可知2x =，0x =为()f x 的零点，利用奇函数图像关于原点对称的性质，可推()f x 在(,0)-∞这个区间上的零点，即可得出答案。
北京清华附中2019高三考前适应性练习-数学(理)
北京清华附中2019高三考前适应性练习-数学（理）理科数学【一】本大题共8小题，每题5分，共40分。
在每题列出的四个选项中，选出符合题目要求的一项。
1、假设复数2()i ix x x z +-=〔x ∈R 〕为纯虚数，那么x 等于〔〕 A 、0B 、1C 、-1D 、0或12、某个几何体的三视图如下图，根据图中标出的尺寸〔单位：cm 〕，可得这个几何体的体积是〔〕 A3B 、32cm 3Ccm 3D 、2cm 3 3、函数⎩⎨⎧><=,0,ln ,0,)(x x x e x f x 那么)]1([ef f =() A 、e1B 、eC 、-e1D 、e -4、如图,假设程序框图输出的S 是126,那么判断框①中应为 〔〕 A 、?5≤n B 、?6≤n C 、?7≤n D 、?8≤n5、正项数列{}n a 中，11=a ，22=a ，222112(2)n n n a a a n +-=+≥，那么6a 等于〔〕 A 、16B 、8C 、22D 、46、从1,2,3,4,5中任取2个不同的数，事件A 为“取到的2个数之和为偶数”，事件B 为“取到的2个数均为偶数”，那么P (B |A )等于〔〕A 、14B 、18C 、25D 、12 7、正实数a ,b 满足不等式1ab a b +<+,那么函数()()log a f x x b =+的图象可能为〔〕8、点()1,0A -、()1,0B ，()00,P x y 是直线2y x =+上任意一点，以A 、B 为焦点的椭圆过点P 、记椭圆离心率e 关于0x 的函数为()0e x ，那么以下结论正确的选项是〔〕A 、e 与0x 一一对应B 、函数()0e x 是增函数C 、函数()0e x 无最小值，有最大值D 、函数()0e x 有最小值，无最大值【二】填空题：本大题共6小题，每题5分，共30分。
9、某校高中部有三个年级，其中高三有学生1000人，现采用分层抽样法抽取一个容量为185的样本，在高一年级抽取了75人，高二年级抽取了60人，那么高中部共有学生____人、10、如图，PC 切圆O 于点C ，割线PAB 经过圆O ，弦CD AB ⊥于点E ，圆O 的半径为3，2PA =，那么PC =______OE =__________.11、曲线4cos 4πρθθ==关于直线对称的曲线的极坐标方程为、12.如图，矩形OABC 内的阴影部分是由曲线()()()sin 0,f x x x π=∈及直线()()0,x a a π=∈与x 轴围成，向矩形OABC 内随机投掷一点，假设落在阴影部分的概率为14，那么a 的值是.13、不等式组⎪⎩⎪⎨⎧≤-≥≤a x x y xy 表示的平面区域S 的面积为4，点S y x P ∈),(，那么y x z +=2的最大值为.14、假设点集{}22(,)|1A x y x y =+≤，{}(,)|11,11B x y x y =--≤≤≤≤，那么点集{}1111(,)|1,1,(,)P x y x x y y x y A ==+=+∈所表示的区域的面积为_____；点集{}12121122(,)|,,(,),(,)Q x y x x x y y y x y A x y B ==+=+∈∈所表示的区域的面积为___________、【三】解答题：本大题共6小题，共80分。
2019-2020学年北京清华附中高一上学期期中考试化学试题(解析版)
北京清华附中2019-2020学年高一上学期期中考试试题可能用到的相对原子质量H-1; C-2; N-14;O-16;Na-23; Mg-24; Al-27; Cl-35.5; Fe-56; Cu-64; Ag-108; Ba-137; Zn-65.一．选择题（单选题，25个，每个2分，共50分）1.下列科研成果不是由我国发明或创造的是（）A. 世界上第一个由人工合成的、具有生理活性的蛋白质﹣﹣结晶牛胰岛素B. 黑火药和造纸C. 发现元素周期律D. 青蒿素的合成『答案』C『解析』【详解】A.1965年，中国科学家在世界上第一次用人工方法合成了结晶牛胰岛素，故A不选；B. 黑火药、造纸、指南者、印刷术是中国古代的四大发明，故B不选；C.1869年，俄国化学家门捷列夫发现了元素周期律，并编制出元素周期表，使得化学学习和研究变得有规律可循，故C选；D.中国科学家屠呦呦因创制新型抗疟药青蒿素的贡献而获诺贝尔奖，故D不选；故『答案』选C.2.我国女科学家屠呦呦发现青蒿素（青蒿素的化学式：C15H22O5），它是一种用于治疗疟疾的药物，曾经挽救了数百万人的生命，2015年获得诺贝尔生理与医学奖，成为我国获得诺贝尔科学奖的第一人．下列关于青蒿素的叙述错的是（）A. 青蒿素的一个分子中含有42个原子B. 青蒿素是一种有机物C. 青蒿素的摩尔质量为282D. 青蒿素中碳元素的质量分数约为63.8%『答案』C『解析』【详解】A. 由青蒿素的化学式可知，每个青蒿素分子中含有15个碳原子、22个氢原子和5个氧原子，共42个原子，故A正确；B. 由青蒿素的化学式可知，青蒿素是一种含碳元素的化合物，属于有机物，故B正确；C. 青蒿素的相对分子质量为12×15+1×22+16×5=282，故摩尔质量为282g/mol，故C错误；D. 青蒿素中碳元素的质量分数为12×15÷282×100%≈63.8%，故D正确。
2019-2020学年北京市清华附中高一新生分班考试数学试题(解析版)
（）
A．40° 【答案】C
B．80°
C．20°
2
D．10°
【解析】由 △PAB 为等腰三角形求出 PAB 70 ，再证明 PA AC ，最后由 BAC PAC PA 得出答案.
【详解】
PA PB,P 40
PAB 为等腰三角形，且 PAB 180 40 70 2
PA 是 O 切线， A 为切点， AC 是直径 PA AC 即 BAC PAC PAB 90 70 20
2．分式
x2
x
x 1
2
的值为
0，则
x
的值为（
）
A． 1或 2
B．2
C． 1
【答案】B
x2 x 2 0
【解析】将该分式化为
|
x
|
1
0
，求解即可.
【详解】
x2 x 2 0 x 1
D． 2
x2 | x
x | 1
2 0
0
，解得
x
2
故选：B
【点睛】
本题主要考查了分式方程的解法，涉及了一元二次方程的解法，属于基础题.
2019-2020 学年北京市清华附中高一新生分班考试数学试题
一、单选题
1．化简 a a2 （ ）
A． a
B． a
C． a
D． a2
【答案】B
【解析】根据根式与分数指数幂的互化即可求解.
【详解】
1
a
a2
a
a2
1 2 2
a2
1
2 a .
故选：B
【点睛】
本题考查了根式与分数指数幂的互化，考查了基本运算求解能力，属于基础题.
3．如图，在四边形 ABCD 中， E 、 F 分别是 AB 、 AD 的中点.若 EF 2 ， BC 5 ， CD 3 ，则 tan C 等于（ ）
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G19级高中入学适应性检测物理试卷 2019.9.29一、单选题（每题3分,共33分） 1.以下的物理中,不是矢量的是（ ） A.瞬时速度 B.力 C.路程 D.加速度2.如图所示，汽车向右沿直线运动，原来的速度是1v ，经过一小段时间之后，速度变为2v ，v ∆表示速度的变化量。
由图中所示信息可知（ ） A.汽车在做加速直线运动B.汽车的加速度方向与1v 的方向相同C.汽车的加速度方向与v ∆的方向相同D.汽车的加速度方向与v ∆的方向相反3.以下关于速度的大小和速率的说法中，正确的是（ ） A.平均速度的大小等于平均速率 B.平均速度的大小大于等于平均速率 C.瞬时速度的大小小于等于瞬时速率 D.瞬时速度的大小等于瞬时速率4.下列说法中正确的是（ ） A.加速度增大，速度一定增大 B.速度变化量越大，加速度一定越大 C.物体有加速度，速度就增大 D.物体的速度很大，加速度可能为05.物体沿直线做加速运动，当加速度逐渐减小时，物体的速度和位移的变化是（ ） A·速度增大，位移增大 B.速度减小，位移减小 C.速度减小，位移增大 D.速度增大，位移减小6.飞船返回地面时，为保护舱内仪器不受损坏，在靠近地面附近时，返回舱会自动放出降落伞减速，若返回舱离地面4km 时，速度方向已竖直向下，大小为200m/s ，此时返回舱将降落伞打开，设打开降落伞后返回舱做匀减速运动，要使返回舱以最安全最理想的方式着陆，则打开降落伞后飞船运动的加速度大小应 为（ ）A.2m/s 5.2 B.2m/s 5 C.20m/s 1 D.2m/s 157.A 、B 两个物体在同一直线上作匀变速直线运动，它们的速度图像如图所示，则（ ）A.s 4 t 时，.A 、B 两物体的速度相同B.头4s 内A 、B 两物体的位移相同C..A 、B 两物体运动方向相反D.A 物体的加速度比B 物体的加速度大8.如图所示，一个小球从光滑斜面上的A 点由静止开始做匀加速直线运动，加速度大小为2.4m/s 0，经过3s 后到达斜面底端B 点，并开始在水平地面上做匀减速直线运动，又经过9s 停在C 点。
已知小球经过B 点时速度大小不变，则小球在斜面上运动的距离与在水平地面上运动的距离之比是（ ）A.1:1B.1:3C.1:2D.3:19.物体先做初速为零的匀加速运动，加速度为1a ，当速度达到v 时，改为以2a 作匀减速运动直至速度为零，在加速和减速过程中，物体的位移和所用时间分别为1s ，1t 和2s ，2t 。
下列式子成立的是（ ）A.1221t t s s = B.221121t a t a s s = C.2121t t a a = D.2121)(2t t s s v ++=10. 某运动员（可看做质点）参加高台跳水比赛，0=t 时刻该运动员已离开跳台且具有竖直向上的初速度。
已知运动员在空中运动的时候（不管是向上运动还是向下运动）他的加速度大小恒定，方向竖直向下。
以竖直向下为正方向画出其速度与时间关系图象如图所示，则（ ） A.1t 时刻开始进入水面B.2t 时刻开始进入水面C.3t 时刻已浮出水面D.2t ~3t 的时间内，运动员的加速度方向向下11.一个物体做初速度未知的匀加速直线运动，它在第3s 内的位移为5m ，则下列说法正确的是（ ） A.物体在第3s 末的速度一定是6m/s B.物体的加速度一定是2m/s 2 C.物体在前5s 内的位移一定是25m D.物体在第5s 内的位移一定是9m二、多选题（每题3分，少选得2分，错选、多选不得分，共12分 12.在下图中，表示物体作匀速直线运动(速度不为零)的是（ ）13.在下列给定初速度和加速度的选项中，属于匀加速运动的是（ ）A.m/s 40-=v ，2m/s 2=aB.m/s 40-=v ，2m/s 2-=aC.m/s 40=v ，2m/s 2=aD.00=v ，2m/s 2-=a14.一物体作匀变速直线运动，某一时刻的速度大小为m/s 4，1s 后速度大小为m/s 8，在这1s 内物体的（ ） A.位移大小可能小于40m B.加速度大小可能小于2m/s 4C.位移大小可能大于10mD.加速度大小可能大于20m/s 115.如图所示，0=t 时，某物体从光滑斜面上的A 点由静止开始下滑，经过B 点后进入水平面（经过B 点前后速度大小不变，方向由沿斜面向下突变为水平向右），最后停在C 点。
每隔2s 物体的瞬时速率记录在表格中，已知物体在斜面上做匀加速直线运动，在水平面上做匀减速直线运动，则下列说法中正确的是（ ）s /t0 2 4 6 )s m /(1-⋅v8128A.s 3=t 时物体恰好经过B 点B.s 10=t 时物体恰好停在C 点C.物体运动过程中的最大速度为2m/s 1D.A 、B 间的距离小于B 、C 间的距离三、填空题(每空2分，共16分)16.一小球在做初速度为零的匀加速直线运动，则：1）小球第1秒末、第2秒末、第3秒末、……第n 秒末的速度之比为 ；2）小球前1秒内、前2秒内、前3秒内、……前n 秒内的位移之比为；17.物体从斜面顶端由静止开始匀加速滑下，经t s 到达中点，则物体从斜面顶端到底端共用时间为 s 。
18.下图是用打点计时器打出的一条纸带，纸带固定在一个做匀加速直线运动的小车后面，图中A 、B 、C 、D 、E 为按时间顺序所取的5个计数点，相邻两计数点之间还有4个点未画出，则打点计时器（频率为50Hz ）打下B 点时的瞬时速度为 m/s ，小车的加速度为 2m/s 。
19.如图是气垫导轨装置图，现在利用气垫导轨来测量滑块的速度，滑块上安装了宽度为1.2cm 的遮光条，滑块在牵引力作用下先后加速通过两个光电门，配套的数字毫秒计记录了遮光板通过第一个光电门的时间为s 10.01=∆t ，通过第二个光电门的时间为s 05.02=∆t ，遮光板从开始遮住第一个光电门到开始遮住第二个光电门的时间为s 0.4=∆t 。
则滑块的加速度大小为 2m/s 。
20.如图为某物体在32s 内运动的v -t 图像，它在这32s 内的平均速度为： m/s 。
21. 一个物体从A 点由静止开始以加速度1a 做匀加速直线运动，经过t 时间后到达B 点，此时将问题的加速度反向，加速度的大小从1a 换为2a ，再经过2t 时间后物体又回到了A 点，则1a 与2a 的大小之比为1a ：2a = 。
（提醒：此题如果计算量大的话建议先抓紧做后边很简单的分值多的计算题）四、计算题（共39分）22.（5分）如图，一个物体从O 点出发，做加速度为a 的匀加速直线运动，依次经过A 、B 、C 、D 四个点，已知从A 到B 的时间T t t t CD BC AB ===，试证明：22aT AB CD =-23.（6分）一个物体从45m 高处自由下落做初速度为零的匀加速直线运动，加速度大小为2m/s 10=a ，那么（1）该物体经多长时间落到地面？ （2）求最后1s 的初速度大小？24.（6分）汽车刹车前的速度为5m/s ，刹车获得的加速度大小为2.4m/s 0. （1）求刹车2s 后汽车的速度大小； （2）求汽车刹车开始后20s 内滑行的距离；（3）求从开始刹车到汽车位移为30m 所经历的时间。
25.(8分)一个滑块沿斜面静止匀加速滑下，依次通过斜面上的A、B，C三点，如图所示，已知AB=6m，BC=10m，滑块经过AB、BC两段位移的时间都是2s，求（1）滑块在B点的瞬时速度；（2）滑块运动的加速度；（3）滑块A到初始位置的距离。
26.(6分)如图所示，在一条平直的公路上有等间距的五个点A、B、C、D、E，相邻两点间距离为L=30m，一辆汽车在公路上做匀加速直线运动，经过这五个点，已知汽车（车头最前端）通过AB段和BC段所用时间分别为3s和2s。
试求：（1）汽车的加速度a的大小；v的大小。
（2）汽车(车头最前端)经过E点时刻的速度E26. （8分）甲、乙两运动员在训练交接棒的过程中发现：甲经短距离加速后能保持9m/s 的速度跑完全程；乙从起跑后到接棒前的运动是匀加速的。
为了确定乙起跑的时机，在接力区前适当的位置设置标记。
在某次练习中，甲在接力区前m S 5.130=处作了标记，并以s m v /9=的速度跑到此标记时向乙发出起跑口令。
乙在接力区的前端听到口令时起跑，并恰好在速度达到与甲相同时被甲追上(乙的最大速度也是9m/s)，完成交接棒。
已知接力区的长度为L =20m 。
求：（1）此次练习中乙在接棒前的加速度a 的大小； （2）在完成交接棒时乙离接力区末端的距离；（3）若乙的最大加速度为24m/s ，最大速度仍为9m/s ，试请优化上面甲乙二人的交接棒过程的设计以使他们的成绩提高，如果不能请说明理由，如果能请估算出最多能使他们的接力赛提快多少秒?参考答案一、1.C 2.C 3.D 4.D 5.A 6.B 7.A 8.B 9.D 10.B 11.C二、12.AC 13.BCD 14.AD 15.BD三、16. 1）1:2:3：……：n2）1:4:9：……：n217.t218.0.26 0.4019.0.0320.221.4:522.略23.（1）3s （2）20m/s24.（1）4.2m/s ；（2）刹车时间为12.5s，刹车开始后20s内滑行的距离为31.25m；（3）10s1m/s；（3）2m25.（1）4m/s；（2）22m/s；（2）23m/s26.（1）23m/s（2）6.5m （3）0.375s 27.（1）2。