2018年高三周考

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2018年高三周考2

2018年高三周考2

南昌东方明珠学校2017-2018学年第一学期 1月份周考(高三英语 )试卷命题人:吴静 审核人:张秀琴 分值:150 分 时间:120 分钟第Ⅰ卷第一部分: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.Where does this conversation probably take place?A. In a bookstore.B. In a classroom.C. In a library. 2. At what time will the film begin?A. 7:20.B. 7:15. 7:00.3. What are the two speakers mainly talking about?A. Their friend Jane.B. A weekend trip.C. A radio programme. 4. What will the woman probably do?A. Catch a train.B. See the man off.C. Go shopping. 5. Why did the woman apologize? A. She made a late delivery.B. She went to the wrong place.C. She couldn’t take the cake back.第二节(共15小题;每小题1.5分,满分22.5分)每段对话读两遍。

听第6段材料,回答第6、7题。

6. Whose CD is broken?A. Kathy’s.B. Mum’s.C. Jack’s. 7. What does the boy promise to do for the girl?A, Buy her a new CD. B. Do some cleaning. C. Give her 10 dollars. 听第7段材料,回答第8、9题。

高三周考卷2018.8.30

高三周考卷2018.8.30

高三周考试卷(理科)2018、8、30一、选择题:12*5=60分1.已知全集U ={1,2,3,4,5,6},M ={2,3,5},N ={4,5},则集合{1,6}=( )A .M ∪NB .M ∩NC .(U C M ∪)ND .(U C M ∩)N 2.若(2)a i i b i -=-,其中,a b R ∈,i 是虚数单位,复数a bi += ( )A .12i +B .12i -+C .12i --D .12i -3.某高三学生希望报名参加某6所高校中的3所学校的自主招生考试,由于其中两所学校的考试时间相同,因此该学生不能同时报考这两所学校,则该学生不同的报考方法种数是( ) A .16 B .24 C .36 D .484.在等差数列{}n a 中,若15934a a a π++=,则46tan()a a +的值为( ) A.3B .-1C .1D .不存在5.如右图所示是某一容器的三视图,现向容器中匀速注水,容器中水面的高度h 随时间t 变化的可能图象是( )6.若方程2ln(1)x x+=的根在区间(k ,1k +)(k Z ∈)上,则k 的值为( )A .-1B .1C .-1或2D .-1或17.若函数()2sin()1f x x ωϕ=+-的图象与直线3y =-的相邻两个交点之间的距离为π,则ω的一个可能取值为( ) A .3 B .13 C .12D .28.已知不等式组00210x y x y ≥⎧⎪≥⎨⎪+-≤⎩表示平面区域D ,往抛物线22y x x =-++与x 轴围成的封闭区域内随机地抛掷一粒小颗粒,则该颗粒落到区域D 中的概率为( ) A .19 B .118C .13D .16 9.下列说法:①将一组数据中的每个数据都加上或减去同一个常数后,方差恒不变;A .B . D .C . 第5题图②设有一个回归方程35y x =-,变量x 增加一个单位时,y 平均增加5个单位; ③线性回归方程y bx a =+必过点(x ,y ); ④曲线上的点与该点的坐标之间具有相关关系;⑤在一个2×2列联表中,由计算得213.079k =,则其两个变量间有关系的可能性是90%。

河北省衡水中学2018届高三下学期第7周周考理科综合试

河北省衡水中学2018届高三下学期第7周周考理科综合试

23 K ~39 Ca ~40 Mg ~24 Al ~27 Fe ~56 Cu ~64 Ag ~108 Zn ~65 Ba ~137 Mn ~55 Pb ~207 Ga ~70 2017-2018 学年度下学期第 7 周理综测试第 I 卷(选择题,共 126 分)可能用到的相对原子质量H ~1 O ~16 C ~12 N ~14 S ~32 F ~19 Cl ~35.5 Br ~80 I ~127 Si ~28 Na ~一、 选择题:本大题共 13 小题,每小题 6 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.据世界卫生组织称,南美洲新生儿小头症患者数量猛增,很大程度上与寨卡病毒有关,已经构成 了国际卫生紧急事件。

寨卡病毒是单股正链 RNA 病毒,是一种通过蚊虫进行传播的虫媒病毒,下列 关于该病毒的叙述正确的是 ( ) A.寨卡病毒的 R NA 位于其拟核中 B.人体可以通过浆细胞产生抗体清除该病毒 C.寨卡病毒的核酸彻底水解的产物是核糖核苷酸 D.可用含有各种营养物质的普通培养基大量培养该病毒2.生物多样性是共同进化的结果。

下列事实不属于共同进化的是()A .随着工业的发展,导致大量温室气体排放,全球气温升高B .随着光合生物的出现,大气中有了氧气,为好氧生物的出现创造了条件C .生活在草原上的斑马和猎豹都能迅速奔跑,是长期相互选择的结果D .4 亿年前形成了原始的陆生植物,随后出现了适应陆地生活的动物3.为了验证胚芽鞘尖端确实能产生促进生长的某种物质,用胚芽鞘和琼脂块等材料进行实验时, 对照实验的设计思路是( )A .完整胚芽鞘分别置于单侧光照射和黑暗条件下B .胚芽鞘尖端和未放过胚芽鞘尖端的琼脂块分别置于胚芽鞘切面的同侧C 未放过胚芽鞘尖端的琼脂块和放过胚芽鞘尖端的琼脂块分别置于胚芽鞘切面的同一侧D .胚芽鞘尖端和放过胚芽鞘尖端的琼脂块分别置于胚芽鞘切面的同一侧 4.下列有关教材实验的说法,正确的是( )A.证明 D NA 是遗传物质的经典实验中没有变异发生B.蔡斯、赫尔希的噬菌体侵染细菌实验不属于对比试验C.探究植物生长调节剂对扦插枝条生根作用的实验中无对照组D.观察线粒体、叶绿体、DNA 在细胞中的分布的实验材料分别是口腔上皮细胞、菠菜、洋葱5. 研究发现,线粒体促凋亡蛋白Smac 是细胞中一个促进细胞凋亡的关键蛋白。

2018届高三下学期周考英语试题(一)(附答案)

2018届高三下学期周考英语试题(一)(附答案)

南昌二中2018届高三二轮复习周考(一)英语试卷第一部分: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. Where does the conversation probably take place?A. In a bookstore.B. In a library.C. In a classroom.2. What are the speakers doing?A. Doing shopping.B. Designing clothes.C. Getting dressed.3. What does the man mean?A. He’ll move the boxes for the woman.B. He wants Bob to give him a hand.C. He can’t help the woman.4. What does the man think of the seats in Prestige Air’ s planes?A. Small.B. Wide.C. Comfortable.5. What are the speakers mainly talking about?A. The man’s early projects.B. The woman’s term paper.C. The way to write a paper.第二节(共15小题,每小题1.5分,满分22.5分)听下面5段对话或独白。

每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。

听每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。

江西省南昌市第二中学2018届高三下学期周考数学文试题

江西省南昌市第二中学2018届高三下学期周考数学文试题

南昌二中2018届高三二轮复习周考(二)数学(文)试卷第Ⅰ卷(选择题共60分)一、 选择题:本大题共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R n m ∈,,集合{}m A 7log ,2=,集合{}n m B ,=,若{}1=B A ,则n m +=( ) A .1B .2C .4D .82.已知a 是实数,i 1i a +-是实数,则7cos 3a π的值为( )A.12B. 21- C.0D.23.在矩形ABCD 中,2,4==AD AB ,若向该矩形内随机投一点P ,那么使得ABP ∆与ADP ∆的面积都不小于2的概率为( ) A .81 B. 41 C. 21 D. 43 4.下列语句中正确的个数是( )①R ∈∀ϕ,函数)2sin()(f ϕ+=x x 都不是偶函数 ②命题“若y x = 则y x sin sin =”的否命题是真命题 ③若p 或q 为真 则p ,非q 均为真④“⋅0>”的充分不必要条件是“与夹角为锐角” A. 0 B .1 C .2 D .35.阅读如下程序框图,如果输出5=i ,那么空白的判断框中应填入的条件是( )A .8<sB .8≤sC .9<sD .9≤s 6.一个空间几何体的三视图及尺寸如图所示,则该几何体的体积是( )A .323+πB .33+πC .32+πD .332+π7.已知实数y x ,满足:⎪⎩⎪⎨⎧≤-≤+≥-62602y x y x x , 则12x --=y Z 的最大值( )A .8B .7C .6D .5 8.将函数ϕπϕsin )22cos(cos )sin 21()(2++-=x x x f 的图象向右平移3π个单位后,所得图象关于y 轴对称,则ϕ的取值可能为( ) A . 3π-B .6π-C .3π D .65π 9.函数xx x y --=333的图像大致是( )10.已知定义在R 上的函数)(x f 是奇函数,且满足)()23(x f x f =-,2)2(-=-f ,数列{}n a 满足11-=a ,且12+=nan S n n ({}n a S n 为的前项和n ),则=)(5a f ( ) A .3- B .2- C .3 D .211.在正方体1111D C B A ABCD -中边长为2,点P 是上底面1111D C B A 内一动点,若三棱锥ABC P -的外接球表面积恰为441π,则此时点P 构成的图形面积为( ) A .π B .π1625 C .π1641D .π2 12.若函数)(x f y =,M x ∈对于给定的非零实数a ,总存在非零常数T ,使得定义域M 内的任意实数x ,都有)()(T x f x af +=恒成立,此时T 为)(x f 的假周期,函数)(x f y =是M上的a 级假周期函数,若函数)(x f y =是定义在区间[)∞+,0内的3级假周期且2=T ,当,)2,0[∈x⎪⎩⎪⎨⎧<<-≤≤-=)21)(2()10(221)(f 2x x f x x x 函数m x x x x g +++-=221ln 2)(,若[]8,61∈∃x ,)0(2∞+∈∃,x 使0)()(12≤-x f x g 成立,则实数m 的取值范围是( )A .]213,(-∞ B .]12,(-∞ C .]39,(-∞ D .),12[+∞ 第II 卷(非选择题共90分)二、填空题:本大题共4小题,每小题5分,共20分.13.已知向量()()R a ∈+-=ααα3sin ,1cos ,()1,4=b的最小值为 . 14.曲线2x y =在点()1,1P 处的切线与直线l 平行且距离为5,则直线l 的方程为 . 15.在△ABC||53cos ||AB A CA B =-则)tan(B A -的最大值为 . 16.已知椭圆15922=+y x 的右焦点为F ,P 是椭圆上一点,点)32,0(A ,当点P 在椭圆上运动时,APF ∆的周长的最大值为.____________三、解答题:共70分。

2018届山东省德州市重点中学高三周考英语试题及答案

2018届山东省德州市重点中学高三周考英语试题及答案

高三周考英语试题第I卷(共105分)第一部分英语知识运用(共两节,满分55分)第一节语法和词汇知识(共10小题;每小题1.5分,满分15分)1.一W0uld it bother you if I turned up the radio?一___________.Lisa is sleeping.A.That’s all right B.I’m afraid soC.I suppose not D.It doesn’t matter2.The book is of great value,but____can be enjoyed unless you digest it.A.everything B.something C.nothing D.anything 3.You’d better pull your car to the side of the road if you_____answer a phone call.A.must B.will C.can D.may4.My daughter reads a lot of books,_____from contemporary novels to ancient poems.A.having ranged B.range C.ranging D.to range5.They_____a rise in salary with the prices of food,petrol and housing increasing every day.A.are expected B.expected C.expect D.are expecting 6.They regard it as their duty_______the best service to the customers.A.to provide B.providing C.provide D.Provided 7.Many cities in the world have been polluted heavily,_______Beijing is an example.A.for which B.in which C.from which D.of which 8.Children will act positively when they are praised,_____it is just a nod with smile.A.as though B.even if C.in case D.so that9.I’m afraid he is more of a talker than a doer,which is_______he never finishes anything.A.why B.when C.that D.where10.Scientists predict that by 2025,90%of all electronic communication______by mobile phone.A.will conduct B.will be conductedC.has conducted D.is conducted第二节完形填空(共30小题,1 l-20每小题1分,21-40每小题1.5分,满分40分)(I)I beheve in the power of forgiveness.It gives a chance,for some,to 11 for their previous mistakes.I have come to learn the true12 of forgiveness over the years through a personal 13 of mine.I was riding with my friend’s family in their car when we werehit by a driver,Eddy Jo who was so drunk.14,everyone survived,although I came away from the 15 badly injured.Nearly a decade later I am still in pain every day.In count,the judge 16 Eddy to twenty—five years in prison.I didn’t 17 the full extent of this when I was thirteen.I was 18 about how the ignorance of him had changed my life forever.As time went by,I began to think of Eddy in jail,away from his family,and how he must feel.I received letters from him,stating his 19 for his actions,and yet I couldn’t bring myself to answer.I was so overwhelmed with so many different emotions thatI didn’t know what to say.I have now 20 Eddy in my heart and have the courage to write to him.11.A.thank B.regret C.wishD.search12.A.impression B.character C.attitudeD.nature13.A.experience B.matter C.problemD.trouble14.A.Eventually B.Hopefully C.Thankfully D.Desperately15.A.car B.hospital C.courtD.accident16.A.expected B.gave C.sentencedD.ordered17.A.understand B.want C.remind D.doubt 18.A.concerned B.upset C.glad D.confused 19.A.anger B.excuse C.kindness D.guilt 20.A.ignored B.forgotten C.forgivenD.respected(II)One lunchtime when I was in the third grade will stay with me always.I had been 21 to be the princess in the school play,and for weeks my mother had painstakingly 22 my lines with me.But no matterhow easily I 23 them at home,as soon as I stepped onstage,every word 24 from my head.Finally.my teacher took me aside.She explained that she had written a narrator’s part to the play,and asked me to switch 25.Her words,26 delivered,still stung(刺耳),especially when I saw my 27 go to another girl.I didn’t tell my mother what had happened when I went home for lunch that day.But she 28 my unease,and instead of suggesting we practice my 29,she asked if I wanted to walk in the yard.It was a lovely spring day and the rose vine(枝条)was turning 30.We could see yellow dandelions(蒲公英)popping through the grass in bunches.I watched my mother 31 bend down by one of the clumps(丛),‚I think I’m going to 32 all these weeds.‚she said.‚From now on,we’ll have only roses in this garden.‛‚But I like dandelions.‛I 33.‚All flowers are beautiful—even dandelions.‛ My mother looked at me seriously.‚Yes,every flower gives 34 in its own way,doesn’t it?‛ She asked thoughtfully.‚And that is 35 of people too,‛she added.‚Not everyone can be a 36,but thereis no shame in that.‛Relieved that she had guessed my 37,I started to cry as I told her what had happened.‚But you will be a 38 narrator,‛she said,reminding me of how much I loved to read stories aloud to her,‚The narrator’s part is as 39 as the part of the princess.‛Over the next few weeks,with her constant 40,I learned to take pride in the role.Lunchtimes were spent reading over my lines and talking about what I would wear.21.A.trained B.picked C.tested D.expected22.A.rewritten B.changed C.questioned D.practiced23.A.replaced B.selected C.delivered D.designed24.A.disappeared B.came C.failedD.shone25.A.seats B.roles C.tasksD.ideas26.A.secretlv B.exactlv C.fullyD.kindly27.A.goal B.duty C.part D.work 28.A.sensed B.ignored C.admitted D.controlled29.A.speeds B.skills C.1inesD.questions30.A.empty B.green C.dry D.soft 31.A.casually B.angrily C.joyfully D.proudly32.A.dig up B.give out C.turn over D.set down33.A.nodded B.cried C.addedD.sighed34.A.fortune B.heat C.favor D.pleasure35.A.true B.wise C.possible D.equal 36.A.director B.host C.princess D.king 37.A.trick B.pain C.joy D.anger38.A.beautiful B.thankful C.cheerful D.merciful39.A.strange B.useful C.exciting D.important40.A.challenge B.competition C.encouragement D. agreement第二部分阅读理解(共25小题;每小题2分,满分50分)ANelson Mandela was a figure of international fame,and many details of his life and career were public knowledge.But here are some things you may not have known about him.In his youth,Mandela enjoyed boxing.Even during the 27 years he spent in prison,he would exercise every morning.‚I did not enjoy the violence of boxing so much as the science of it.Boxing is equal.I never did any real fighting after I entered politics.My main interest was in training,‛he wrote in his autobiography Long Walk to Freedom. Among the memorabilia in the Mandela Family Museum in Soweto,visitors call find the world championship belt given to Mandela by American boxer Sugar Ray Leonard.Rolihlahla Mandela was nine years old when a teacher at the primary Methodist school where he was studying, gave him an English name—Nelson—in accordance with the custom to give all school children Christian names.Rolihlahla is not a common name in South Africa.It means ‚troublemaker‛.His circumcision name was Dalibunga,meaning ‚founder of the Bunga‛.However, in South Africa,Mr Mandela was often called by his clan(宗族)name—Madiba—which South Africans used out of respect. After going underground because of his ANC activities,Mr Mandela’s ability to evade(躲避)the securities services earned him the nickname ‚the black Pimpernel‛,after the novel The Scarlet Pimpernel,about a hero with a secret identity.A fake(伪造的)passport in the name of David Motsamayi was used by Mr Mandela. He had disguised himself as a driver,a gardener and a chef in order to travel around the country unnoticed by the authorities.Mr Mandela studied law on and off for 50 years from 1939,failing about half the courseshe took.In August 1952,he and Oliver Tamboestablished South Africa’s first black law firm,Mandela and Tambo,in Johannesburg.He persevered to finally secure a law degree while in prison in 1989.41.Why did Nelson Mandela become a boxing fan?A.He enjoyed the violence of boxing. B.He wanted to take the championship.C.He desired to enjoy the training. D.He hoped to find a better job.42.Which of the following is true of Mandela’s name?A.His original name was not Nelson.B.His parents gave him the name—Nelson.C.Rolihlahla is a popular name in South Africa.D.Madiba was his Christian name.43.What made people call Mr Mandela‚the black Pimpernel‛? A.His ability to escape from being caught.B.His underground activities in ANC.C.His pressure given by the authorities.D.The novel’s hero with a secret identity.44.Mr Mandela made a fake passport to_____.A.travel around the country B.escape from the authorities C.disguise himself as an actor D.go abroad easily45.What can we learn from the last paragraph?A.It took Mr Mandela over fifty years to get a law degree.B.Mr Mandela set up South Africa’s first law firm.C.Mr Mandela got his law degree after being released from prison.D.Mr Mandela was a determined person.BTraffic problems are an everyday concern in many cities,including Washington,DC.A growing number of Washingtonians are turning to bicycles to get to and from work.In fact,the number of commuters who use bicycles has doubled in the city since 2007.Ralph Buehler teaches urban planning at the Virginia Polytechnic Institute and State University,popularly known as Virginia Tech.He has written a book about urban biking,called ‚City Cycling‛. He says there is a reason why urban bike tiding is now becoming more popular.‚Over the last 60 to 70 years.cities in the U.S.have been adapted to the automobile.‛‚Most cities took advantage of the money coming for the interstate highway system,from the federal government,starting in 1956.There was a 90 percent federal match(补贴)so the cities only had to put up 10%.It was very tempting.‛In the years after World War Two,many Americans moved to suburban communities,just outside major cities,They decided to travel great distances to and from work in exchange for a home in the suburbs.Their cars became a symbol of freedom.But today,many people believe they can save money by living in the city.Greg Billing is with the Washington Area Bicyclist Association.‚When a person makes a change from 04 using a car to using a bike,they are saving anywhere between 8 or$9,000 a year.‛ Ralph Buehler says governments save money when people use bicycles.‚Building bicycling facilities is much cheaper than building and maintaining road facilities or public transport.‛Washington,DC has also taken steps to protect bike riders.It approved a safe passing law and created areas on the road between cars and bikes.The United States Census Bureau says 4%of the city’s workers ride to work by bike.The only city on the East Coast with more bike commuters is New York.46.What’s the best title of the text?A.Traffic problems are an everyday concern in many citiesB.Bicycling to work in Washington,DC grows in popularityC.Bikes result in new problems in Washington,DCD.Washington,DC has taken steps to protect bike riders 47.What can we know from Ralph Buehler’s statement?A.The federal government supported building public transport. B.Government invested a lot to build bicycling facilities.C.Cities didn’t use the money from the government wisely.D.Urban biking has been popular in the last 60 to 70 years.48.In the years after World War Two,many Americans prefer to_____. A.1ive in the city B.1ive in the suburbsC.travel great distances D.rent houses49.What do Ralph Buehler and Greg Billing agree with?A.Money can be saved when people use bicycles.B.Living in the city is much cheaper than in the country.C.Government should build more bicycling facilities.D.Road facilities and public transport develop rapidly now.50.What can we infer from the text?A.Traffic problems are the most severe in Washington,DC.B.4%of Washingtonians ride to work by bike in Washington,DC. C.Washington,DC concerns about the safety of bike riders.D. More cities on the East Coast have bike commuters.CImagine a school where there are no academic requirements,no curriculum,and no tests.Children have total contro1 of their education and are free to do what they want all day,every day.Sudbury Valley School in Framingham,Massachusetts has been operating this way since 1968.More than 30 schools worldwide have imitated the Sudbury model,and over 200 schools identify similarly as ‚democratic schools.‛These schools are designed based on the belief that children have an innate curiosity to learn and do best when they direct their own learning.Sudbury Vallev School admits anyone who wants to enroll(注册)between the ages of 4 and 18.Many parents send their kids froma young age because they believe that kids do best when they learn what they want to learn.Other students come to Sudbury because they had various issues in traditional school systems including rebellion,learning difficulties,and emotional problems.Sudbury is administered through a democratic process where every student and staff member has an equal vote.In fact,students outnumber staff 20 to 1.There’s no age segregation(差别);four-year-olds can hang out with teenagers.Many staff members are part time and have rich careers as historians,businessmen,psychologists,artists,among others.Learning is self-directed and occurs informally through having conversations,starting projects.reading for enjoyment,and playing games.If students are interested in a particular topic,they work with staff and other students to organize courses and find resources.The requirement for getting a high school diploma is to write an essay about how they are prepared t0 be an adult.95%of students graduate.90%of graduates end up going to college,better than the national average of 66%.Most graduates say that they benefited from a self-directededucation because they were more motivated than their peers,lacked fear of authority figures,and got a head start in their field of interest.They work hard at doing the things they love to do.51.From Paragraph 1,we can know that_____.A.there are curriculums and tests in the schoolB.children can control their education freely in the school C.the school has been a ‚democratic school‛ for 50 years D.the school thinks their children lack curiosity 52.Paragraph 2 mainly talks about_____.A.How parents send their children thereB.When parents send their children thereC.What children do in Sudbury Valley SchoolD.Why parents send their children there53.Which of the following shows the school is democratically managed?A.Students have the same right as staff in voting.B.There are as many students as staff members.C.The students are of the same age.D.All staff members work part-time.54.How can the students in Sudbury get their diploma?A.By having conversations. B.By reading for enjoyment.C.By playing games. D.By submitting a qualified paper.55.Most graduates’ attitude towards Sudbury Valley School’s education might be ____.A.unclear B.negative C.positive D.doubtfulDHow many hours do you spend sitting in a chair every day? Eight hours in the office plus three hours in front of the TV after work is the norm for many people.You probably don’t need an expert to tell you that sitting too much is not good for your health—from an increased risk of heart disease and obesity in the long term,to reduced cholesterol(胆固醇)maintenance in the short term,not to mention the strain on your neck and spine.To make matters worse,many researches show a good diet and regular exercise call’t reduce the negative effects of sitting too much.A 2010 study of nearly 9,000 Australians found that for eachadditional hour of television a person watched per day,the risk of dying rose by 11 percent.Another study tracked the health of 123,000 Americans between 1992 and 2006.The death rate for men who spent six hours or more per day sitting was about 20 percent higher than for men who sat for three hours or less.So what can we do about it? Health experts suggest we break up those many hours spent sitting with more hours spent standing.The BBC conducted a simple experiment with a group of 10 volunteers who usually spent most of the day sitting.They were asked to stand for at least three hours a day.The researchers took measurements Oil days when the volunteers stood,and when they sat around.When they looked at the data there were some striking differences,the BBC reported.Blood sugar leveled off much quicker on the days when the study subjects stood compared with the days they spent in a chair.Standing also burned more calories——about 50 calories an hour.A member said although doing exercise offers many proven benefits,our bodies also need the increase in muscle activity that standing provides.The researchers believe that even small adjustments,likestanding while talking on the phone,will help.56.The underlined word ‚norm‛in Paragraph 1 most probably means____.A.standard answer B.causeC.excuse D.reasonable explanation57.What bad effect does sitting too much have?A.A low risk of heart disease. B.Becoming too fat.C.Balanced cholesterol maintenance.D.Benefiting your neck and spine.58.What’s the main idea of Paragraph 4?A.Sitting is killing us.B.We should have a good diet.C.Watching TV does us no good.D.Women have higher death rate than men.59.What is the purpose of the experiment in the text?A.To help the 10 volunteers to lose weight.B.To find the difference between standing and sitting.C.To prove the benefit of standing.D.To teach us how to control blood sugar.60.What would be the best title for the text?A.Having regular exercise B.Standing up for healthC.Watching less TV D.Increasing muscle activityEGimmicky—and expensive—new gloves allow chatterboxes to take the term ‘handsfree’ to a new level—by talking into them as they make a call.The gloves are known as ‘Talk to the Hand’ and cost£1.000 a pair.They come with a speaker unit embedded(嵌入)into the thumb and a microphone built into the little finger that can be connected to any mobile handset using Bluetooth.Artist Sean Miles designed the gloves that double as a phone in part of his project that shows the possibilities of gadget(小机件)recycling.He combines gloves with parts from mobile handsets recycled through O2,which commissioned the project.Mobile phone users will be able to keep their hands warm while they chat without taking their phone out of their pocket or handbag.Mr Miles designed two pairs of the new gloves—one in pink and the other in brown and yellow.They will appear in an exhibition this July and visitors will be able to win the gloves.If demand is high,they will then be produced on a larger scale.O2 Recycle,which backs the project,estimates that there are already 70 million unused mobile handsets in the UK.The service pays those who recycle gadgets including phones,MP3 players and digital cameras.Designer Scan Miles,hopes his work will get people thinking about recycling.The 41-year-old said:‚I hope that my Talk to the Hand project will get people to think again about the waste created by not recycling gadgets.If a few more people recycle their gadgets rather than send them to landfill(垃圾场),I think this project will have fulfilled its aim.‛The Talk to the Hand mobile phone gloves are the second product in a series that O2 Recycle and Miles have created.Miles is now working on combining phones with handbags—so people don’t spend time rummaging(翻查)around in their bags to find a phone when it rings.61.For what purpose is the text written?A.To show the harmfulness of old handsets.B.To introduce Sean Miles’new designs.C.To warn people not to throw electronic waste.D.To ask more people to join O2 Recycle.62.What’s the main idea of Paragraph 3?A.How the new gloves are designed. B.What the gloves are made of.C.Who designed the gloves. D.How O2 Recycle is managed.63.What can we learn about Talk to the Hand?A.It has been widely used at present.B.It has a pair of gloves that can function as a phone.C.It can be connected directly to any mobile handset.D.It is expensive but environment—friendly.64.Which of the following is true of O2 Recycle?A.It encourages people to recycle gadgets.B.It has recycled 70 million mobile handsets.C.It promotes the technology of IT.D.It is now recycling gadgets around the world.65.What is the passage mainly about?A.New mobiles that are fashionable.B.Sean Miles who set up a phone company.C.Outdated gadgets that can be used for recycling.D.New gloves that can be used for making phone calls.第II卷(共45分)第三部分书面表达(共两节,满分45分)第一节阅读表达(共5小题;每小题3分,满分15分)阅读下面的短文,并根据文章后的要求答题。

河北省衡水中学2018届高三上学期第9周周考高中语文试卷参考答案及评分标准

河北省衡水中学2018届高三上学期第9周周考高中语文试卷参考答案及评分标准

第9周周测答案4.C(“旨在表现当地牧民与经商者间的矛盾”牵强附会)5.①写出妈妈对牛的嗔怪。

妈妈发现牛又来捣蛋有些生气,却又沉浸在赶牛的乐趣中。

②写出妈妈识物性,懂生活。

她认为牛屎是惠及人的生活的,并不脏臭,毫不嫌弃。

③写出作者对在沙依横布拉克那一段既烦恼又充满乐趣的赶牛日子的怀念。

(第一处1分,后两处各2分)6.①恰当运用象声词,使场景描述真实、贴切。

比如“嘶啦”一声,“哗啦哗啦”响得厉害,“呼哧呼哧”的喘粗气声。

②叙述语言幽默风趣,轻松活泼,令人忍俊不禁。

比如我妈对牛粪的态度,“拉就拉呗,反正牛粪又不是什么脏臭的东西,我们以前还拾过牛粪用来烧火呢”。

③叙述语言适当使用方言词,地方色彩较浓。

比如写到我妈记住那些牛的模样,称它们“全是些尕尕的半大牛娃子”。

(每点2分,意思相近即可)7. D【解析】D项,多数网友并未给予孩子自主选择权”理解不准确,原文中“对于暑假怎么过才有意义,网友们意见不一,但愿意遵从孩子的意愿者不少”,说明有不少网友愿意遵循孩子意愿,给予孩子自主权。

选项理解不正确。

8. BD【解析】A项,“以天津为例”错误,材料二的调查只是针对天津网友,且回收有效问卷203份,不能代表天津的整体情况。

选项分析和评价不正确。

C项,“《关于推进中小学生研学旅行的意见》从制度上做出了保障,从而消除了家长‘有游无学’的担忧”错误,《关于推进中小学研学旅行的意见》只是使游学得到了制度上的保障,并不能限制商业因素对游学的渗入。

选项分析和评价不正确。

E项,“三则材料都是对游学现象的报道与评论”错误,材料一只是客观报道,没有评论。

选项分析和评价不正确。

9.①根据家庭经济情况,量力而行,合理设计。

②正确认识游学的意义和价值,有针对性地开展游学活动。

③把游学活动和教育有机结合起来,做到知行合一。

④遵从孩子的意愿,更好地锻炼孩子,促进其成长。

10.A(入山泽,以渔猎为事。

唯太原王乂谓舒曰:“卿终当为台辅,然今未能令妻子免饥寒,吾当助卿营之。

河北省衡水中学2018届高三下学期第6周周考数学(理)试题(精校Word版含答案)

河北省衡水中学2018届高三下学期第6周周考数学(理)试题(精校Word版含答案)

理数周日测试6 一、选择题1.已知集合{}{}2,,1,0,2,3,4,8A x x n n Z B ==∈=-,则()R A B ⋂=ð( ) A. {}1,2,6 B. {}0,1,2 C. {}1,3- D.{}1,6- 2.已知i 是虚数单位,则2331i i i -⎛⎫-= ⎪+⎝⎭( )A. 32i --B. 33i --C. 24i -+D. 22i -- 3.已知2sin 3α=,则()3tan sin 2ππαα⎛⎫++= ⎪⎝⎭( ) A. 23-B. 23C.4.已知椭圆()222210x y a b a b+=>>的离心率为12,且椭圆的长轴与焦距之差为4,则该椭圆为方程为( )A. 22142x y +=B. 22184x y +=C. 221164x y +=D.2211612x y += 5.公元五世纪,数学家祖冲之估计圆周率π的值的范围是:3.1415926 3.1415927π<<,为纪念祖冲之在圆周率的成就,把3.1415926称为“祖率”,这是中国数学的伟大成就.某小学教师为帮助同学们了解“祖率”,让同学们从小数点后的7位数字1,4,1,5,9,2,6随机选取两位数字,整数部分3不变,那么得到的数字大于3.14的概率为( ) A.2831 B. 1921 C. 2231 D.1721 6.运行如图所示的程序,输出的结果为( )A. 8B. 6C. 5D.47.已知某几何体的三视图如图所示,则该几何体的表面积为( )A. 6πB. 8πC. 6π+6D.8π+48.已知直线1:1l y x =+与2:l y x m =+之间的距离为2,则直线2l 被圆()22:18C x y ++=截得的弦长为( )A. 4B.3C.2D.19.已知实数,x y 满足不等式组10201x y x y x -+≥⎧⎪+≥⎨⎪≤⎩,则目标函数3z x y =-的最大值为( )A.1B.2C.53 D. 7310.在边长为1的正ABC ∆中,点D 在边BC 上,点E 是AC 中点,若316AD BE =-,则BDBC=( ) A.14 B. 12 C. 34 D. 7811.已知定义在R 上的函数()f x ,满足()()()f m x f m x x R +=-∈,且1x ≥时,()22x n f x -+=,图象如图所示,则满足()2n mf x -≥的实数x 的取值范围是( ) A. []-1,3 B. 1322⎡⎤⎢⎥⎣⎦, C. []0,2 D. 15,22⎡⎤-⎢⎥⎣⎦12.已知函数()()23sin cos 4cos 0f x x x x ωωωω=->的最小正周期为π,且()12f θ=,则2f πθ⎛⎫+= ⎪⎝⎭( ) A. 52-B. 92-C. 112-D. 132- 二、填空题13.在正方体1111ABCD A BC D -中,点M 是11C D 的中点,则1A M 与AB 所成角的正切值为. 14.已知双曲线()222210,0x y a b a b-=>>的离心率为2,过双曲线的右焦点垂直于x 轴的直线被双曲线截得的弦长为m ,则ma=. 15.已知函数()()()()ln 0ln 0x x f x x x >⎧⎪=⎨--<⎪⎩,若()()()20,0f a f b a b =><,且224a b +的最小值为m ,则()22log mab +-=.16.已知ABC ∆的三个内角所对的边分别为,,a b c ,且cos cos 2cos b C c B a B +=,sin 3sin B A =,则a c=. 三、解答题17.(12分)已知等比数列{}n a 满足:112a =,且895618a a a a +=+. (1)求{}n a 的通项公式及前n 项和; (2)若n nb na =,求{}n b 的前n 项和n T .18.(12分)如图,三棱锥P ABC -中,PAB ABC ⊥平面平面,PA PB =,且AB PC ⊥.(1)求证:CA CB =;(2)若2,PA PB AB PC ====P ABC -的体积.19.(12分)某搜索引擎广告按照付费价格对搜索结果进行排名,点击一次付费价格排名越靠前,被点击的次数也可能会提高,已知某关键词被甲、乙等多个公司竞争,其中甲、乙付费情况与每小时点击量结果绘制成如下的折线图.(1)试根据所给数据计算每小时点击次数的均值方差并分析两组数据的特征;(2)若把乙公司设置的每次点击价格为x ,每小时点击次数为y ,则点(x ,y )近似在一条直线附近.试根据前5次价格与每小时点击次数的关系,求y 关于x 的回归直线ˆˆˆybx a =+.(附:回归方程系数公式:1221ˆˆˆ,ni ii nii x y nxybay bx xnx =-=-==--∑∑) 20.(12分)如图,直线10l y ++=与y 轴交于点A ,与抛物线()2:20C x py p =>交于P ,Q ,点B 与点A 关于x 轴对称,连接QB ,BP 并延长分别与x 轴交于点M ,N. (1)若PQ =,求抛物线C 的方程;(2)若3MN =,求BMN ∆外接圆的方程.21.(12分)已知函数()()2ln f x x axa R =+∈.(1)若()y f x =在2x =处的切线与x 轴平行,求()f x 的极值;(2)若函数()()1g x f x x =--在()0∞,+上单调递增,求实数a 的取值范围. 选考题22.(10分)选修4-4坐标系与参数方程以原点为极点,x 轴的正半轴为极轴建立极坐标系,曲线C 的极坐标方程为()253cos28ρθ-=,直线l的参数方程为22x m t y ⎧=-⎪⎪⎨⎪=⎪⎩(其中t 为参数).(1)把曲线C 的极坐标方程化为普通方程;(2)若直线l 与曲线C 有两个公共点,求实数m 的取值范围.23.(10分)选修4-5不等式选讲 已知函数()12f x x x =-+.(1)关于x 的不等式()2f x <的解集为M ,且(),12m m M -⊆,求实数m 的取值范围; (2)求()()22g x f x x x =-+-的最小值,及对应的x 的取值范围. 附加题. 已知函数()()()2ln f x x g x ax bx a b ==-,、为常数.(Ⅰ)求函数()f x 在点()()1,1f 处的切线方程;(Ⅱ)当函数()2g x x =在处取得极值-2,求函数()g x 的解析式;(Ⅲ)当12a=时,设()()()h x f x g x=+,若函数()h x在定义域上存在单调减区间,求实数b的取值范围.河北衡水中学2018届高三数学复习 周日测答案1.【答案】C 【解析】由条件可知A 为偶数集,故(){}R 1,3A B =-I ð.2.【答案】B 【解析】()()()22231i 3i 3i i i 12i i 33i 1i 2轾--骣-÷犏ç-=+=-+=--÷ç÷犏ç桫+臌. 3.【答案】A 【解析】()()32tan sin tan cos sin 23p p a a a a a 骣÷ç++=-=-=-÷ç÷ç桫. 4.【答案】D 【解析】设椭圆的焦距为2c ,由条件可得12c a =,故2a c =,由椭圆的长轴与焦距之差为4可得()24a c -=,即2a c -=,所以,4a =,2c =,故22212b a c =-=,故该椭圆的方程为2211612x y +=.5.【答案】A 【解析】从1,4,1,5,9,2,6这7位数字中任选两位数字的不同情况有:14,11,15,19,12,16,41,45,49,42,46,59,52,56,92,96,26,51,91,21,61,54,94,24,64,95,25,65,29,69,62,共31种不同情况,其中使得到的数字不大于3.14的情况有3种不同情况,故所求概率为32813131-=. 6.【答案】D 【解析】所给程序的运行过程如下:1b =,3a =;2b =,7a =;3b =,15a =;4b =,31a =,不满足30a <,输出b 的值为4.7.【答案】C 【解析】由三视图可知,该几何体是一个圆柱的34,故表面积为()232123213664p p p ??创=+.8.【答案】A 【解析】由条件可知,直线1l 过圆心():1,0C -,则圆心C 到直线2l 的距离等于直线1l 与2l 之间的距离2,故直线2l 被圆C 截得的弦长为4. 9.【答案】B 【解析】不等式组表示的平面区域如下图中的阴影部分所示:且点12,33A 骣÷ç-÷ç÷ç桫,()1,2B ,()1,2C -,易得目标函数3z x y =-在点C 处取得最大值5.10.【答案】C 【解析】设AB =uu u r a ,AC =uuu r b ,BD BC l =uu u r uu u r,则()()1AD AB BD l l l =+=+-=-+u u u r u u u r u u u r a b a a b ,12BE AE AB =-=-u u u r u u u r u u u r b a ,则()()()()()()2211111312221133131142416AD BE l l l l l l l l l 骣÷ç轾?-+?=-?-+÷ç臌÷ç桫=-+-+=-=-uuu r uu u r a b b a a b a b故34l =,即34BD BC =. 11.【答案】B 【解析】由条件可知,()f x 的图象关于直线1x =对称,结合()()()f m x f m x x +=-?R 可得1m =,而()11f =,即221n -+=,解之得2n =,由()2n m f x -≥可得()12f x ≥,当1x ≥时,由22122x -+≥,解之得32x ≤,所以,312x ≤≤,再结合对称性可得x 的取值范围是13,22轾犏犏臌.12.【答案】B 【解析】()()2353sin cos 4cos sin 22cos22sin 2222f x x x x x x x w w w w w w j =-=--=--,其中4sin 5j =,3cos 5j =,由()12f q =可得()sin 21wq j -=,即()f x 关于x q =对称,而2x p q =+与x q =的距离为12个周期,故sin 212p w q j 轾骣÷ç犏+-=-÷ç÷ç犏桫臌,所以,592222f p q 骣÷ç+=--=-÷ç÷ç桫. 13.【答案】2【解析】11MA B Ð即为1A M 与AB 所成角,取11A B 中点N ,连接MN ,则11MN A B ^,则111tan 2MNMA B A N?=. 14.【答案】6【解析】设双曲线的焦距为2c ,则2ca=,即2c a =,则b =2x c a==代入双曲线可得2b y a =?,故22b m a =,所以,2226m b a a==.15.【答案】3【解析】由()()()20,0f a f b a b =><可得()ln ln 2a b =--,即21ab -=,∴12ab =-,则2242242a b a bab +?=≥,当且仅当122ab a b ìïï=-ïíïï=-ïî,即112a b ì=ïïïíï=-ïïî时,224a b +取得最小值2.故()22212log 2log 32m ab +=+=.16.cos cos 2cos b C c B a B +=及正弦定理可得sin cos sin 2sin cos B C Ccos B A B +=,即()sin 2sin cos B C A B +=,而()sin sin 0A B C =+>,∴1cos 2B =.由sin 3sin B A =可得3b a =,由余弦定理可得2222cos b a c ac B =+-,即2229a a c ac =+-,解之得a c=(舍去负值). 17.【解析】(1)设{}n a 的公比为q ,由895618a a a a +=+可得318q =,∴12q =,∴12n n a =,∴11112211212n n n S 骣÷ç-÷ç÷ç桫==--.(5分) (2)由(1)可得2n n n b =,则231232222n n nT =++++L ① 所以,2341112322222n n nT +=++++L ②由①-②可得2311111111111222112222222212n n n n n n n n n T +++骣÷ç-÷ç÷ç桫+=++++-=-=--L , 所以,222n nn T +=-.(12分) 18.【解析】(1)取AB 的中点O ,连接PO ,PC .∵PA PB =,∴PO AB ^, ∵AB PC ^,PC PO P =I ,PC ,PO Ì平面POC , ∴AB ^平面POC ,又∵OC Ì平面POC ,∴AB OC ^, 而O 是AB 的中点,∴CA CB =.(6分)(2)∵平面PAB ^平面ABC ,PO Ì平面PAB ,平面PAB I 平面ABC AB =, ∴PO ^平面ABC,由条件可得PO =OC =.则11222ABC S AB OC =?创V ∴三棱锥P ABC -的体积为:1133ABC V S PO =?V .(12分)19.【解析】(1)由题图可知,甲公司每小时点击次数为9,5,7,8,7,6,8,6,7,7,乙公司每小时点击次数为2,4,6,8,7,7,8,9,9,10. 甲公司每小时点击次数的平均数为:9578768677710x +++++++++==甲,乙公司每小时点击次数的平均数为:24687789071091x +++++++++==乙.甲公司每小时点击次数的方差为:()()222222122212140 1.210S 轾=+-+??+?犏臌甲;乙公司每小时点击次数的方差为:()()()22222222153******** 5.410S 轾=-+-+-+??+?犏臌乙,由计算已知,甲、乙公司每小时点击次数的均值相同,但是甲的方差较小,所以,甲公司每小时点击次数更加稳定.(6分)(2)根据折线图可得数据如下:则3x =, 5.4y =,则5152215 1.4i i i ii x y xy b x n x=-=-==-åå$, 1.2a =$, ∴所求回归直线方程为: 1.4 1.2y x =+$.(12分)20.【解析】(1)由2102y x py++=ï=ïî可得220x p ++=, 设点()11,P x y ,()22,Q x y,则()280p D=->,即1p >,12x x +=-,122x x p =,故12PQ x =-=.由2p =(舍去负值), ∴抛物线C 的方程为24x y =.(5分)(2)设直线BN ,BM 的斜率分别为1k ,2k 点,21221111212111111122222x y x p x x x x x p k x x px px p-----=====,22222221221222221122222x y x p x x x x x p k x x px px p-----=====, ∴120k k +=.直线BN 的方程为:11y k x =+,直线BM 的方程为:21y k x =+,则11,0N k 骣÷ç÷-ç÷ç÷桫,21,0M k 骣÷ç÷-ç÷ç÷桫,则12211211k k MN k k k k -=-==,由120k k +=可得12k k =-,∴1212k k =,∴1k =2k =120k k <,故tan tan BNM BMN ??, 即BMN V 是等腰三角形,且1OB =,则BMN V 的外接圆的圆心一定在y 轴上,设为()0,t ,由圆心到点M ,B 的距离相等可得()2221t t -=+桫,解之得16t =-,外接圆方程为22149636x y 骣÷ç++=÷ç÷ç桫.(12分) 21.【解析】(1)∵()2ln f x x ax =+,∴()()120f x ax x x ¢=+>, 由条件可得()11402f a ¢=+=,解之得18a =-, ∴()21ln 8f x x x =-,()()()()2211044x x f x x x x x --+¢=-=>, 令()0f x ¢=可得2x =或2x =-(舍去)当02x <<时,()0f x ¢>;当2x >时,()0f x ¢<即()f x 在()0,2上单调递增,在()2,+?上单调递减,故()f x 有极大值()12ln 22f =-,无极小值(5分) (2)()2ln 1g x x ax x =+--,则()()2121210ax x g x ax x x x-+¢=+-=> 设()221h x ax x =-+,①当0a =时,()1x g x x-¢=-,当01x <<时,()0g x ¢>, 当1x >时,()0g x ¢<,即()g x 在()0,1上单调递增,在()1,+?上单调递减,不满足条件;②当0a <时,()221h x ax x =-+是开口向下的抛物线,方程2210ax x -+=有两个实根,设较大实根为0x .当0x x >时,有()0h x <,即()0g x ¢<,∴()g x 在()0,x +?上单调递减,故不符合条件(8分)③当0a >时,由()0g x ¢≥可得()221h x ax x =-+在()0,+?上恒成立,故只需()0010400h a a ìïïïï-ïï-ïíïïD >ïïïï>ïî≥≤或0D ≤,即101041800a a a ìïïïïïïïíïï->ïïïï>ïî≥≤或1800a a ì-ïïíï>ïî≤,解之得18a ≥. 综上可知,实数a 的取值范围是1,8轹÷ê+?÷÷êøë.(12分) 22.【解析】(1)方程()253cos28r q -=可化为()22532cos 18r q 轾--=犏臌,即22243cos 4r r q -=,把222c o s x x y r r q ìï=+ïíï=ïî代入可得()222434x y x +-=,整理可得2214x y +=.(5分)(2)把x m y ìïï=-ïïïíïïï=ïïî代入2214x y +=可得225280t m -+-=,由条件可得()()2220280m D =--->,解之得m -<即实数m的取值范围是(-.(10分)23.【解析】(1)当1x ≤时,不等式()2f x <可变为()122x x --+<,解之得1x <,∴1x <;当1x >时,不等式()2f x <可变为()122x x -+<,解之得1x <,∴x 不存在. 综上可知,不等式()2f x <的解集为(),1M =-?.由(),12m m M -?,可得12121m m m ì<-ïïíï-ïî≤,解之得103m <≤,即实数m 的取值范围是10,3轹÷ê÷÷êøë.(5分)(2)()()()()2212121g x f x x x x x x x =-+-=-+----=≥,当且仅当()()120x x --≤,即12x ≤≤时,()g x 取得最小值1,此时,实数x 的取值范围是[]1,2.(10分)附加题(1)1y x =-(2)()2122g x x x =-(3)()2,b ∈+∞ 试题解析:(Ⅰ)由()ln f x x =(0x >),可得()1'f x x =(0x >), ∴()f x 在点()()1,1f 处的切线方程是()()()111y f f x '-=-,即1y x =-,所求切线方程为1y x =-. (Ⅱ)∵又()2g x ax bx =-可得()2g x ax b '=-,且()g x 在2x =处取得极值2-. ∴()()20,22,g g '⎧=⎪⎨=-⎪⎩可得40,422,a b a b -=-=-⎧⎨⎩解得12a =,2b =. 所求()2122g x x x =-(x R ∈). (Ⅲ)∵()()()21ln 2h x f x g x x x bx =+=+-,()21x bx h x x -+'=(0x >). 依题存在0x >使()210x bx h x x-+'=<,∴即存在0x >使210x bx -+<, 不等式210x bx -+<等价于1b x x >+(*) 令()1x x x=+λ(0x >),∵()()()221111(0)x x x x x x λ+-'=-=>. ∴()x λ在()0,1上递减,在[)1,+∞上递增,故()[)12,x x x=+∈+∞λ, ∵存在0x >,不等式(*)成立,∴2b >,所求()2,b ∈+∞.。

绥阳中学2018届高三第二次周考 数学(理)

绥阳中学2018届高三第二次周考 数学(理)

绥阳中学2018届高三第二次周考数学(理)一选择题(本大题共12小题,每小题5分,共60分.在每小题给出的四个选项中,只有一个选项符合题目要求。

)1.已知集合=⋂<+-=--=B A x x x B A 则},0)2)(1({},2,1,0,1,2{( )A.{-1,0}B.{0,1}C.{-1,0,1} D{0,1,2}2.已知z=(m+3)+(m-1)i 在复平面内对应的点在第四象限,则实数m 的取值范围为( )A.(-3,1) B.(-1,3) C.),1(+∞ D.()3,-∞-3.已知向量=⊥+-==m .),2,3(),,1(则)且(b b a b m a ( )A. -8B.-6C.6D. 84.设命题为则p ,2,:2⌝>∈∃n n N n p ( )A. n n N n 2,2>∈∀B.n n N n 2,2≤∈∃C.n n N n 2,2≤∈∀D.n n N n 2,2=∈∃5.投篮测试中,每人投3次,至少投中2次才能通过测试,已知某同学每次投中的概率为0.6.且各次投篮是否投中相互独立,则该同学测试合格的概率为( )A.0.648B.0.432C.0.36 0.3126.已知双曲线C:)0,0(12222>>=+b a b y a x 的离心率为25,则双曲线C 的渐近线方程为( ) A.x y 41±= B.x y 31±= C.x y 21±= D.x y ±= 7.已知函数f (x )是定义在R 上的偶函数,若当x<0时,f (x ))2(log 2x -=,则f (32)=( )A.-32B.-6C.6D.648.执行如图所示的程序框图,如果输入的x ,y ∈R.那么输出的S 的最大值为( )A.0B.1C.2D.39.“a>2”是“函数a x x f -=)(在]1,(-∞上单调递减”的( )A.充分不必要条件B.必要不充分条件C.充分必要条件D.既不充分也不必要条件10.在封闭的直三棱柱111C B A ABC -内有一个体积为V 的球,若BC AB ⊥,AB=6,BC=8,1AA =3,则V 的最大值为( )A.π4B.9πC.π6D.32π(2)写出)(x f 的对称轴方程和对称中心的坐标,(3)求函数)(x f 的最小正周期及单调递减区间.19.(本题满分12分)在9件产品中,有3件一等品,4件二等品和2件三等品,从这9件产品中任取3件,求:(1)求取出的3件产品全是二等品的概率;(2)取出3件产品中一等品的件数X 的分布列和期望;(3)取出的3件产品中一等品多于二等品件数的概率.20.(本题满分12分)称点为D.(1求椭圆E 的方程;(2)点P 在椭圆上,直线CP 和DP 的斜率都存在且不为0,试问直线CP 和DP 的斜率之积是否为定值,若是,求出定值,若不是说明理由.21.(本题满分12分)(1)若a=1,求函数)(x f 的单调区间和)(x f 的最小值;(2)若a>0,求函数)(x f 的单调区间;(3你的结论.为极点,x 轴正半轴为极轴的极坐标系,曲线C 的极坐标方程为2=ρ.(1)写出直线l 的普通方程与曲线C 的直角坐标方程.(2)设直线l 与曲线C 交于A,B 两点,求线段AB 的长度.(1)求不等式3)1()(≤++x f x f 的解集;(2)若a>0,求证:)()()(a f x af ax f ≥+.。

三明市第一中学2018届高三下学期语文周考(二)试题Word版含详细详细答案

三明市第一中学2018届高三下学期语文周考(二)试题Word版含详细详细答案

2018年三明一中高三周考(二)语文试卷本试卷共10页,22题。

全卷满分150分。

考试用时150分钟。

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.回答选择题时,选出每小题答案后,用2B铅笔把答题卡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。

回答非选择题时,用0.5毫米黑色墨水签字笔将答案写在答题卡上。

写在本试卷上无效。

一、现代文阅读(35分)(一)论述类文本阅读(本题共3小题,9分)阅读下面的文字,完成1-3题。

中国传统司法智慧是中国传统法律文化孕育的产物,对中国传统司法文明的演进起了不可忽视的促进作用,其人道性、正义性更是具有历久弥新的价值。

在中国传统法律文化中,儒家、法家是两个影响深远的学派,其司法智慧也对司法实践影响颇巨,而且在今日仍有重要借鉴价值,可为现代司法改革提供有价值的精神资源和制度资源。

“德主司法”是指以道德精神主导司法,它体现了儒家学派的司法智慧。

儒家道德有着丰富的内容,但大略言之,以“仁道”为核心和主流。

“仁道”,即仁爱之道,强调尊重人、关心人、爱护人,特别是重视人的生命价值,这与现代的人道主义理念也有相通之处。

应该指出,儒家的仁道思想在中国历史上产生了积极影响,此种影响亦及于传统司法制度,如“录囚”“直诉”“赦宥”“存留养亲”“死刑覆奏”“死刑监候”等,无不体现了一定的仁道精神。

虽然封建司法制度在整体上仍然偏于严酷,但上述制度的创设却在一定程度上稀释了其严酷性,而显示了某种人道温情。

“德主司法”既然是让道德主宰司法,当然要求司法人员必须具备高尚的道德,或者说必须具备人道情怀,儒家经典提倡的“好生之德”就是例证,它要求司法人员必须尊重人的生命价值,绝对不可嗜血成性,无视人的生命尊严,靠“刑杀”树威。

在儒家看来,一切反仁道的司法活动都应受到道义的谴责。

另外,司法人员还应当具备“敬”“慎”之类的道德素质,严肃认真、小心谨慎地对待司法活动,让每一个案件都经得起法律和历史的检验。

第二中学2018届高三下学期周考数学(文)试题(一)(附答案) (1)

第二中学2018届高三下学期周考数学(文)试题(一)(附答案) (1)

南昌二中2018届高三二轮复习周考(一)数学(文)试卷一、选择题(共12小题,每小题5分,满分60分)1.已知集合A={x||x+1|≤2,x ∈z},B={y|y=x 2,﹣1≤x≤1},则A∩B=( ) A .(﹣∞,1]B .[﹣1,1]C .{0,1}D .{﹣1,0,1}2.若z 是复数,且(3+z )i=1(i 为虚数单位),则z 的值为( ) A .﹣3+iB .﹣3﹣iC .3+iD .3﹣i3.“2a ≠”是直线23ax y +=与直线(1)1x a y +-=相交的( ) 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4.设x ,y 满足,若目标函数z=ax+y (a >0)最大值为14,则a 为( )A .B .23C .2D .15.设S n 是等比数列{a n }的前n 项的和,S m ﹣1=45,S m =93,则S m+1=189,则m=( ) A .6B .5C .4D .36.函数)32cos(π+=x y 的图象是由函数cos y x =的图象经过下列哪两次变换而得到的( )A.先将cos y x =图象上各点的横坐标缩短到原来的一半,再将所得图象向左平移3π个单位B.先将cos y x =图象上各点的横坐标伸长到原来的2倍,再将所得图象向左平移3π个单位C.先将cos y x =的图象向左平移3π个单位,再将所得图象上各点的横坐标缩短到原来的一半D.先将cos y x =的图象向左平移3π个单位,再将所得图象上各点的横坐标伸长到原来的2倍7.已知甲、乙两名篮球运动员某十场比赛得分的茎叶图如图所示,则甲、 乙两人在这十场比赛中得分的平均数与方差的大小关系为( )A .<,S 2甲<S2乙B .<,S 2甲>S 2乙C .>,S2甲>S 2乙D .>,S2甲<S2乙8.元朝著名数学家朱世杰在《四元玉鉴》中 有一首诗:“我有一壶酒,携着游春走, 遇店添一倍,逢友饮一斗,店友经三处, 没了壶中酒,借问此壶中,当原多少酒?” 用程序框图表达如图所示,即最终输出的0x =,则一开始输入的x 的值为( )A .34 B .78 C .1516D .49.函数f (x )=的图象可能是( )A .B .C .D .10.某几何体的三视图如图所示,其正视图中的曲线部分为半圆,则该几何体的表面积为( )A .10+6+4π(cm 2)B .16+6+4π(cm 2)C .12+4π(cm 2)D .22+4π(cm 2)11.已知抛物线)0(042,42222>=+++-=a a y y x x M F y x C :圆,焦点为:,过F的直线l 与C交于A,B两点(点A在第一象限),且AF FB 4=,直线l 与圆M相切,则=a ( )A . 0B .5C .5D .312. 已知函数2()ln(2)2x f x x a=--,(a 为常数且0≠a ),若)(x f 在0x 处取得极值,且20[2,2]x e e ∉++,而2()0[2,2]f x e e ≥++在 上恒成立,则a 的取值范围( )A .242e e a +≥B .242e e a +>C .e e a 22+≥D .e e a 22+>二、填空题(本大题共四小题,每小题5分,共20分)13.设正项等差数列{}n a 的前n 项和为n S ,若20176051S =,则4201414a a +的最小值为________.14.设抛物线y 2=4x 的焦点为F ,准线为l ,P 为抛物线上一点,PA ⊥l ,A 为垂足,如果AF 的倾斜角为23π,则|PF|= . 15.在边长为1的正三角形ABC 中,设2,2BC BD CE EA ==,则AD BE ⋅=__________.16.在北京召开的第24届国际数学家大会的会议,会议是根据中国古代数学家赵爽的弦图(如图)设计的,其由四个全等的直角三角形和一个正方形组成,若直角三角形的直角边的边长分别是3和4,在绘图内随机取一点,则此点取自直角三角形部分的概率为________.三、解答题(本大题共六小题共70分.解答应写出必要的文字说明,证明过程或演算步骤. 17.(本小题满分12分)已知锐角..ABC ∆中内角A 、B 、C 所对边的边长分别为a 、b 、c ,满足C ab b a cos 622=+,且B A C sin sin 32sin 2=.(1)求角C 的值; (2)设函数)0(cos )6sin()(>++=ωωπωx x x f ,()f x 且图象上相邻两最高点间的距离为π,求()f A 的取值范围.18.(本小题满分12分)四棱柱1111D C B A ABCD -中,底面ABCD 为正方形,211===D A AA AD ,H 为AD 中点,且BD H A⊥1. (1)证明1AA AB ⊥;(2)求点C 到平面BD A 1的距离.19.(本小题满分12分)传承传统文化再掀热潮,央视科教频道以诗词知识竞赛为主的《中国诗词大会》火爆荧屏.将中学组和大学组的参赛选手按成绩分为优秀、良好、一般三个等级,随机从中抽取了100名选手进行调查,下面是根据调查结果绘制的选手等级人数的条形图.(1)若将一般等级和良好等级合称为合格等级,根据已知条件完成下面的2×2列联表,并据此资料你是否有95%的把握认为选手成绩“优秀”与文化程度有关?注:,其中n=a+b+c+d .(2)若参赛选手共6万人,用频率估计概率,试估计其中优秀等级的选手人数;(3)在优秀等级的选手中取6名,依次编号为1,2,3,4,5,6,在良好等级的选手中取6名,依次编号为1,2,3,4,5,6,在选出的6名优秀等级的选手中任取一名,记其编号为a ,在选出的6名良好等级的选手中任取一名,记其编号为b ,求使得方程组有唯一一组实数解(x ,y )的概率.20.(本小题满分12分)已知是抛物线上的一点,以点和点为直径两端点的圆交直线于两点,直线与平行,且直线交抛物线于两点.(1)求线段的长;(2)若,且直线与圆相交所得弦长与相等,求直线的方程.21.(本小题满分12分)已知函数()ln af x x b x=-+,其中,a b R ∈且2a >,若(2)ln 212ef =-+,()f x 在(1,(1))f 处切线的斜率为1e --. (1)求函数()f x 的解析式及其单调区间;(2)若实数,c d 满足cd λ=,且()()f c f d <对于任意c d >恒成立,求实数λ的取值范围.四、请考生在第22、23题中任选一题做答,如果多做,则按所做的第一题记分.做答时,用2B 铅笔在答题卡上把所选题目对应的题号涂黑. 22.(本小题满分10分)选修4-4:坐标系与参数方程在直角坐标系xOy 中,曲线C 的参数方程为⎩⎨⎧=+=ααsin cos 2y x (α为参数),在以坐标原点为极点,x 轴正半轴为极轴的极坐标系中,直线l 的极坐标方程为22)4sin(=+πθρ.(1)求曲线C 与直线l 在该直角坐标系下的普通方程;(2)动点A 在曲线C 上,动点B 在直线l 上,定点)1,1(-P ,求||||AB PB +的最小值.23.(本小题满分10分)选修4-5:不等式选讲已知()|3|f x x a a =--,()|31|g x x =+,a R ∈。

河北省衡水中学2018届高三下学期周考语文试题语文6及参考答案

河北省衡水中学2018届高三下学期周考语文试题语文6及参考答案

,资料来源:中国科学院长春光学精密机械与物理研究所。

有删改)古人早就直观觉察到太阳与时间之间存在某种关系,慢慢学会了以太阳在天空中的位置来古人发明圭表这种天文仪器的目的就是度量日影的长度。

圭表中的“表”指的是直立于平地上测日影的标杆或石柱,测量表影的长度,就可知道时圭表中的“圭”指的是正南正北方向平放的刻板,它能方便人们随时直接读出表影的长度文章先从圭表的名称及其主要构件着笔,接着简要分析了其产生的背景。

领队的是李长富的儿子李尚武,他提着一个灯笼,引着狮子先在厅里转一圈,然后再到三间正房里转了一圈。

禾嫂把十元钱的红包递给李尚武,李尚武接过红包,插在上衣的口袋里。

李尚武挥挥手,锣声停了。

焦点聚在李尚武身上。

李尚武放下手中的灯笼,双手摘下舞狮人的狮头,像捧着满满一碗油,小心翼翼地放在八仙桌上,扯开盖在旧狮头上的红布,将两个狮头并排放在一起。

有人递来了香烛和祭品,李尚武把祭品一字排开,点起了香烛。

人群静得出奇。

李尚武神色凝重地斟了三杯酒,对着狮头鞠三个躬,然后拿起酒杯,将杯中的酒一一泼在地上。

突然,李尚武猛一转身,抱拳朗声说:‚各位,大家都看到了,我刚刚与何代兵比了一场武,我李尚武输了,输得很惨,这青狮我给何少侠留下了。

‛说罢,李尚武朝狮队喊了一声:开路!刚才戴着青狮头的小伙子,已经换上了温顺的红狮头。

锵锵锵!锵锵锵!锣又敲响了,狮队中有人放响了一挂千响电光炮,震得满屋子嗡嗡回响。

(有删改)4.下列对小说相关内容和艺术特色的分析鉴赏,不正确的一项是(3分)A.舞狮队“锵锵锵”的锣声在小说中的每一次出现,既是对舞狮队巡游时的热闹气氛的渲染,更是对禾嫂紧张忐忑心理的有力烘托。

B.相隔十八年的两次“比武”都写得很有特色:前一次既有平民打斗的真实感,又有武者交手的侠士范儿;后一次更是干脆“无中生有”,出人意外。

C.对于“偷贪”,何代兵自认为是“义举”,法律却视之为罪行,然而又令对手李尚武敬服,这似乎暗示何代兵、李尚武等所秉持的行为准则,与法律有微妙的冲突。

2018届高三英语周考一试卷

2018届高三英语周考一试卷

2018届高三英语周考一试卷湖北省部分重点高中参加了2018年3年级3年级第二次联考2018年3年级英语周试卷第一部分听力(满分为2分,满分为30分)考试时,答案应先在试卷上标出录音后,你有两分钟时间将试卷上的答案转移到答题纸上。

第一节(共5小题大做;每题1.5分,满分7.5分)听下面5个对话每段对话后,都有一个问题。

从问题A、B和C给出的三个选项中选择最好的一个,并在试卷的相应位置做标记。

听完每一段对话后,你有10秒钟的时间回答关于主题的问题,并阅读下一个主题。

每段对话只读一遍。

1.这个人会做什么?修理门。

油漆天花板。

现在就离开家。

2.那个人是谁?厨师。

一个店主。

服务员。

3.火车什么时候离开?上午10:55。

十点四十。

十点二十五分。

4.这个人为什么起得早?洗餐具。

做早操。

准备早餐。

5.这个人下一步想做什么?a . go for ABI kiride . b . playbasket . c . release at home .每项1.5分,满分22.5分)听下面5段对话或独白在每个对话或独白之后,有几个项目。

从问题A、B和C给出的三个选项中选择最好的一个,并在试卷的相应位置做标记。

在听每一段对话或独白之前,你将有时间阅读每一项5秒钟。

听完后,每个项目将有5秒钟的时间回答问题。

每段对话或独白读两遍。

听第6段,回答问题6和76。

演讲者多久没见面了?大约半年。

大约一年。

大约两年。

7.这个女人现在在哪个部门工作?听第7段,回答问题8到9。

8.这个人对这套公寓有什么看法?它家具齐全。

它在地铁附近。

它很便宜。

9.爱丽丝是做什么的?听第8段,回答问题10至12。

10.那个人要去哪里?一个警察局。

一家修理店。

一家书店。

11.什么是“城镇指南”?一本书。

一个人开一家商店。

12.这个人在和谁说话?a .女警察b .过路人c .店主听第9段,回答问题13至16。

13.这个女人下周将去哪里?英国。

美国。

澳大利亚。

14.这个女人最喜欢她的工作哪一点?会见不同的人。

2018届高三英语周考一试卷

2018届高三英语周考一试卷

2018届高三英语周考一试卷(总9页)--本页仅作为文档封面,使用时请直接删除即可----内页可以根据需求调整合适字体及大小--2018届高三英语周考一试卷第一部分听力(共两节,满分30分)做题时,先将答案标在试卷上。

录音内容结束后,你将有两分钟的时间将试卷上的答案转涂到答题卡上。

第一节(共5小题;每小题分,满分分)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. What will the man do?A. Repair the doors.B. Paint the ceiling.C. Leave home now.2. What is the man?A. A chef.B. A shop owner.C. A waiter.3. When is the train leaving?A. At 10:55.B. At 10:40.C. At 10:25.4. Why does the man get up early?A. To do the washing up.B. To take morning exercise.C. To prepare breakfast.5. What does the man want to do next?A. Go for a bike ride.B. Play basketball.C. Relax at home.第二节(共15小题;每小题分,满分分)听下面5段对话或独白。

每段对话或独白后有几个小题,从题中所给的A、B、C 三个选项中选出最佳选项,并标在试卷的相应位置。

听每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。

每段对话或独白读两遍。

听第6段材料,回答第6、7题。

湖南师大附中2018届高三周考试卷理科综合能力测试

湖南师大附中2018届高三周考试卷理科综合能力测试

湖南师大附中2018届高三周考试卷理科综合能力测试注意事项:1.本试题卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。

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.回答第Ⅰ卷时,选出每小题答案后,用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。

写在本试卷上无效。

3.回答第Ⅱ卷时,将答案写在答题卡上。

写在本试卷上无效。

4.考试结束后,将本试卷和答题卡一并交回。

可能用到的相对原子质量:H—1 C—12 N—14 O—16 Si—28 S—32 Cr—52 Mn—55第Ⅱ卷(选择题,共21小题,共126分)一、选择题:本题共13小题,每小题6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.下列有关细胞结构和功能的叙述,错误的是( )A. 细胞间进行信息交流时不一定需要细胞膜上的受体参与B. 核仁与核糖体的形成有关,但有核糖体的细胞不一定有核仁C. 某些低等植物细胞在有丝分裂前期有两个互相垂直的中心体D. 水生植物丽藻细胞可通过主动运输积累K +,体现了生物膜的功能特性2.将若干长度、生理状况相同的鲜萝卜条均分为四组,分别置于清水和物质的量浓度相同的三种溶液中,实验结果如图。

下列叙述错误的是( )A. 清水组中萝卜条长度增加较少的原因是细胞壁的伸缩性较小B. 蔗糖溶液中的萝卜条不能恢复原长度是因为细胞不吸收蔗糖C. 实验说明萝卜细胞吸收甘油的速率比吸收葡萄糖快D. 45min 时,甘油组、葡萄糖组的细胞液浓度都与实验前相等3.右图是胰液分泌的调节过程,下列说法错误的是( )A. 小肠通过分泌激素A 可与胰腺细胞进行信息交流B. 胰腺分泌胰液是神经一体液调节的结果C. 能直接促进胰腺分泌胰液的信号物质有激素A 和激素B 两种D. 通过神经B 和神经A 的调节比通过激素A 或激素B 的调节速度快姓 名准考证号4.下表是真核生物细胞核内三种RNA聚合酶的主要功能,下列说法错误的是()名称RNA聚合酶ⅠRNA聚合酶ⅡRNA聚合酶Ⅲ主要功能合成rRNA 合成mRNA 合成tRNA三种均以为模板合成B. 三种酶发挥作用形成的产物均可参与翻译过程C. RNA聚合酶的合成场所与其发挥作用的场所相同D. 任何一种RNA聚合酶活性变化都会影响其它两种酶的合成5.下列对现代生物进化理论的叙述,错误的是()A.地理隔离和生殖隔离都会使种群间的基因不能交流B. 自然选择使种群基因频率发生定向改变C. 突变和重组只是提供了生物进化的原材料,不能决定生物进化的方向D. 没有地理隔离就不可能产生生殖隔离6.下图是某生态农场生产流程示意图,有关说法合理的是()A. 该生态系统中有3个营养级B. 合理使用农家肥可提高流经该生态系统的总能量C. 该生态系统引入食用菌、蚯蚓后大大提高了能量传递效率D. 除草、治虫的目的是提高生态系统的抵抗力稳定性7.下列关于有机物的说法中,正确的一组是()①“乙醇汽油”是在汽油里加入适量乙醇而成的一种燃料,它是一种新型化合物①汽油、柴油和植物油都是碳氢化合物,完全燃烧只生成CO2和H2O①石油的分馏、煤的气化和液化都是物理变化。

2018届高三第一次周考语文试卷(含详细答案)

2018届高三第一次周考语文试卷(含详细答案)

2018届高三第一次周考语文试卷第Ⅰ卷阅读题一、文学类文本阅读(本题共3小题,14分)阅读下面的文字,完成1-3题。

缝山针(非鱼)年又春是市文化局的助理调研员,也是个业余画家,他的写意山水在省里小有名气。

局里开党委会研究驻村扶贫工作,说市里要求必须有一名副县级干部带队,在扶贫村帮扶一年,尽快帮村民走上致富路。

年又春一听说是高阳村,他忙说,我去。

高阳村年又春去过。

几年前他出去写生,骑一辆自行车三转两不转到了一个小山村,①当时正是槐花飘香的时候,漫山遍野雪白的云朵起伏着,甜腻腻的香味让年又春陶醉了。

他躺在树下睡了一觉,然后支起画架,画了两幅《听槐》。

临走的时候,年又春问一个放羊孩子,那孩子吸溜着鼻涕告诉他:这是高阳村。

正月十五没过,年又春就带着被褥、军大衣、煤气灶、米面油盐,和两名驻村队员来到高阳村。

村民们敲锣打鼓欢迎他们的到来,年又春看到寒风里热气腾腾的欢迎队伍,他的心一颤:一定要尽自己最大努力,帮百姓致富。

年又春从局里要来一部分扶贫资金,又借助各种关系拉来十来万赞助,修公路、架电话线、建蓄水池,一项项实实在在的帮扶工程建成了,村民脸上的笑容多了,村委开会也开他们宿舍去了,大事小事都要跟他们商量。

②秋天到来时,山上的柿子树上挂起了火红的小灯笼,年又春站在山顶上,深深呼吸着山风带来的果实成熟的香味,他又一次醉了,久违的情绪在胸膛里鼓胀。

下山的时候,年又春看见瘦瘦的高小根背了一大筐煤。

他早听说高阳山上有煤,可一直没顾上详细问。

他叫住高小根,要看看他筐里的煤。

高小根说这煤是无烟煤,好烧。

山上不少,也不深,有时候找准了几镢头下去就能看到黑煤。

年又春一听立即兴奋了。

这么好的资源怎么村里早就不知道开发呢,要开发出来,村民不早富了,还用他们来扶贫?年又春一回村就把村委会主任叫来,问他煤的事。

主任说早也想开发,村里没钱,投资不起。

找市煤炭局的一个技术员来看过,他说都是“鸡窝矿”。

年又春问他啥叫“鸡窝矿”。

主任说就是矿床太小,一小片一小片,跟鸡窝一样。

高三周考题2018.8.16

高三周考题2018.8.16

高三数学周考试题(理科) 2018、8、16一、选择题:本大题共15小题,每小题3分,共45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、若0n >,则232n n +的最小值为 ( ) A . 2 B .4 C .6 D .82、下列命题中正确的是( )A .1y xx =+的最小值是2 B .2y =的最小值是2C .()4230y x x x =-->的最大值是2-D .()4230y x x x=-->的最小值是2-3、若实数m,n,x,y 满足m 2+n 2=1,x 2+y 2=3,则mx+ny 的最大值是A .2B .5C .3D .434、设x >0,y >0,M=y x y x +++2,N=yyx x +++22,则M 、N 的大小关系是( )A .M >NB .M <NC .M≥ND .M≤N 5、若不等式|ax+2|<6的解集为(-1,2),则实数a 等于A .8B .2C .4D .-6、下列各式中,最小值等于2的是( )A .x y y x +B .4522++x x C .1tan tan θθ+ D .22x x-+7、若(,1)x ∈-∞,则函数22222x x y x -+=-有( )A .最小值1B .最大值1C .最大值1-D .最小值1-8、设不等的两个正数,a b 满足3322a b a b -=-,则a b +的取值范围是( ) A .(1,)+∞ B .4(1,)3 C .4[1,]3D .(0,1)9、设,,a b c R +∈,且1a b c ++=,若111(1)(1)(1)M a b c=---,则必有( ) A .108M ≤<B .118M ≤< C .18M ≤< D .8M ≥10、若,a b R +∈,且,a b M≠=N =M 与N 的大小关系是 A .M N > B .M N < C .M N ≥ D .M N ≤ 11、若log 2x y =-,则x y +的最小值是( )A . 2233B .3323C .233 D .32212、若1x >,则函数21161xy x x x =+++的最小值为( ) A .16 B .8 C .4 D .非上述情况二、填空题:本大题共4小题,每小题5分,共20分. 13、若存在实数x 使|||1|3x a x -+-≤成立,则实数a 的取值范围是 .14、不等式|5||3|10x x -++≥的解集是 .15、已知集合{}1|349,|46,(0,)A x R x x B x R x t t t ⎧⎫=∈++-≤=∈=+-∈+∞⎨⎬⎩⎭,则集合A B ⋂=________.16、设,x y R ∈,且0xy ≠,则222211()(4)x y y x ++的最小值为 .三、解答题:本大题共5小题,共14*5=70分,解答应写出文字说明或演算步骤. 17、设a 、b 是非负实数,求证:。

河北省衡水中学2018届高三下学期第6周周考理科数学试卷及参考答案

河北省衡水中学2018届高三下学期第6周周考理科数学试卷及参考答案

x 2 bx 1 0 ,∴即存在 x 0 使 x2 bx 1 0 , x
1 (*) x
不等式 x 2 bx 1 0 等价于 b x 令 x x
1 x 1 x 1 1 ( x 0) . (x 0) ,∵ ' x 1 2 x x2 x


1 时,设 h x f x g x ,若函数 h x 在定义域上存在单调减区间,求实数 2
b 的取值范围.
理数周测 6
3/3
周日测答案
附加题 (1 ) y x 1 (2 ) g x
1 2 x 2 x (3) b 2, 2
1 2, , x
∴ x 在 0,1 上递减,在 1, 上递增,故 x x ∵存在 x 0 ,不等式(*)成立,∴ b 2 .所求 b 2,
试题解析:(Ⅰ)由 f x lnx ( x 0 ), 可得 f பைடு நூலகம் x
1 ( x 0 ), x
∴ f x 在点 1, f 1 处的切线方程是 y f 1 f ' 1 x 1 ,即 y x 1 ,所求切线方程为


y x 1.
1 2 . x 2x ( x R ) 2
所求 g x
x 2 bx 1 1 2 (Ⅲ)∵ h x f x g x lnx x bx , h ' x ( x 0 ). x 2
依题存在 x 0 使 h ' x
(Ⅱ)∵又 g x ax bx 可得 g ' x 2ax b ,且 g x 在 x 2 处取得极值 2 .

2018届高三周考七理综试题

2018届高三周考七理综试题

2018届高三周考七理科综合试题物理命题:左俊明化学命题:陈安文生物命题:李茂华物理审题:李登高化学审题:周易军生物审题:李街平一、选择题(本大题包括13小题,每小题6分,共78分,每小题的四个选项中,只有一项符合题目要求。

)1.下列有关核酸结构和功能的叙述,错误的是A.DNA和RNA化学组成上的差异表现在五碳糖的不同B.盐酸能使染色质中的DNA和蛋白质分离,有利于DNA与染色剂结合C.DNA主要分布在细胞核内,RNA主要分布在细胞质中D.豌豆叶肉细胞中的核酸,含有的碱基种类有5种2.下列有关物质跨膜运输方式的叙述,错误的是A.甘油、乙醇、苯等物质可以通过自由扩散进出细胞B.胞吐过程一定会发生分泌泡与细胞膜的融合C.葡萄糖进入细胞的运输方式均为协助扩散D.主动运输能保证活细胞按照生命活动的需要吸收或排出相应物质3.下列有关酶的相关实验的叙述,正确的是A.“比较过氧化氢在不同条件下的分解”实验中温度是无关变量B.“验证酶的专一性”实验中,淀粉或蔗糖+淀粉酶→应用碘液检测产物C.“探究温度对酶活性的影响”实验中不宜选择过氧化氢作底物D.“探究pH对酶活性的影响”实验中,实验步骤应该是先加底物调pH后再加酶液4.下列关于探索DNA是遗传物质的实验,叙述正确的是A.赫尔希和蔡斯实验中离心后大肠杆菌主要存在于沉淀中B.赫尔希和蔡斯实验中细菌裂解后得到的噬菌体都带有35S标记C.格里菲思实验证明了DNA可以改变生物体的遗传性状D.艾弗里实验证明了从S型细菌中提取的DNA可以使小鼠死亡5.下表是真核生物细胞核内三种RNA聚合酶的主要功能,下列说法错误..的是A.三种RNA均以DNA为模板合成B.三种酶发挥作用形成的产物均可参与翻译过程C.RNA聚合酶的合成场所与其发挥作用的场所相同D.任一种RNA聚合酶活性变化都会影响其他两种酶的合成6.豌豆子叶的黄色(Y)对绿色(y)为显性,圆粒种子(R)对皱粒种子(r)为显性。

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南昌东方明珠学校2017-2018学年第一学期1月份周考(高三英语)试卷命题人:审核人:分值:分时间:分钟第Ⅰ卷第一部分: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.Where does this conversation probably take place?A. In a bookstore.B. In a classroom.C. In a library.2.At what time will the film begin?A. 7:20.B. 7:15. 7:00.3.What are the two speakers mainly talking about?A. Their friend Jane.B. A weekend trip.C. A radio programme.4.What will the woman probably do?A. Catch a train.B. See the man off.C. Go shopping.5.Why did the woman apologize?A. She made a late delivery.B. She went to the wrong place.C. She couldn’t take the cake back.第二节(共15小题;每小题1.5分,满分22.5分)每段对话读两遍。

听第6段材料,回答第6、7题。

6.Whose CD is broken?A. Kathy’s.B. Mum’s.C. Jack’s.7.What does the boy promise to do for the girl?A, Buy her a new CD. B. Do some cleaning. C. Give her 10 dollars.听第7段材料,回答第8、9题。

8.What did the man think of the meal?A. Just so-so.B. Quite satisfactory.C. A bit disappointing.9.What was the 15% on the bill paid for?A. The food.B. The drinks.C. The service.听第8段材料,回答第10至12题。

10.Why is the man at the shop?A. To order a camera for his wife.B. To have a camera repaired.C. To get a camera changed. 11.What colour does the man want ?A. Pink.B. Black.C. Orange.12.What will the man do afterwards?A. Make a phone call.B. Wait until further notice.C. Come again the next day.听第9段材料,回答第13至16题。

13.What would Joe probably do during the Thanksgiving holiday?A. Go to a play.B. Stay at home.C. Visit Kingston.14.What is Ariel going to do in Toronto?A. Attend a party.B. Meet her aunt.C. See a car show.15.Why is Ariel in a hurry to leave?A. To call up Betty.B. To buy some DVDs.C. To pick up Daniel.16.What might be the relationship between the speakers?A. Classmates.B. Fellow workers.C. Guide and tourist.听第10段材料,回答第17至20题。

17.Why do some people say they never have dreams according to Dr Garfield?A. They forget about their dreams.B. They don’t want to tell the truth.C. They have no bad experiences.18.Why did Davis stop having dreams?A. He got a serious heart attack.B. He was too sad about his brother’s death.C. He was frightened by a terrible dream.19.What is Dr Garfield’s opinion about dreaming?A. It is very useful.B. It makes things worse.C. It prevents the mind from working.20.Why do some people turn off their dreams completely?A. To sleep better.B. To recover from illnesses.C. To stay away from their problems.第二部分阅读理解(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。

AThe Healthy Habits Survey(调查) shows that only about one third of American seniors have correct habits. Here are some finding and expert advice.1. How many times did you brush your teeth yesterday?●Finding: A full 33% of seniors brush their teeth only once a day.●Step:Remove the 300 types of bacteria in your mouth each morning with abattery-operated toothbrush. Brush gently for 2 minutes, at least twice a day.2. How many times did you wash your hands or bathe yesterday?●Finding: Seniors, on average, bathe fewer than 3 days a week. And nearly 30%wash theirhands only 4 times a day---half of the number doctors recommend.●Step: We touch our faces around 3,000 times a day---often inviting germs(病菌) to enterour mouth, nose, and eyes. Use toilet paper to avoid touching the door handle. And, most important, wash your hands often with hot running water and soap for 20 seconds.3. How often do you think about fighting germs?●Finding: Seniors are not fighting germs as well as they should.●Step: Be aware of germs. Do you know it is not your toilet but your kitchen sponge(海绵)that can carry more germs than anything else? To kill these germs, keep your sponge in the microwave for 10 seconds.21.What is found out about American seniors?A. Most of them have good habitsB. Nearly 30%of them bathe three days a weekC. About one third of them brush their teeth only once a dayD. All of them are fighting germs better than expected22.Doctors suggest that people should wash their hands .A. twice a dayB. eight times a dayC. four times a dayD. three times a day23.Which of the following is true according to the text?A. A kitchen sponge can carry more germs than a toiletB. There are less than 300 types of bacteria in the mouthC. We should keep from touching our facesD. We should wash our hands before touching a door handleBI experienced more than I was able to handle as a boy. My father was an alcoholic, which resulted in an absolute mess in our family including physical abuse in my parents’ marriage. I was five years old when my parents divorced. My mother worked day and night to support the family. This left me with a lot of time by myself. I never received any encouragement to try out for sports or after-school activities. Because of this, I never really thought that I could do it. I thought that without a parent’s company, support and encouragement it was hard for a teen to set up structure for themselves. Had I experienced the love from both of my parents, I would have been able to learn how to make real friends and how to build confidence, teamwork and good decision-making skills.But that was not my reality. Reality was that I fell in with the wrong crowd. I made some bad friends. As I met more people who partied, took drugs and alcohol, I began to follow them. Before I knew it, all I cared about was how I was going to get high.My mom was angry and let me know how much I was letting her down but I didn’t know how to stop and I couldn’t picture my life without the drugs. I protected my using drugs at any cost. I was angry at her because it seemed as if I was not important to her. The one thing about my mom was that she did not give up. I not only needed treatment to fight my addiction, but needed help to remove what I had been carrying around for years. Professionals were able to help us heal together. They were able to help my mom learn how to push me when I needed drugs, and communicate with an angry teenager.We didn’t take the route that most mothers and sons take in life, but we are proof that addiction doesn’t have to tear a family apart forever.24. What can be learned about the author’s parents?A. His mother encouraged him to do sports.B. His mother didn’t know how to raise him alone.C. His father drank a lot for failure in his business.D. His father was to blame for his parents’ div orce.25. How was the author affected by his parents’ divorce?A. He failed to make any friends.B. He felt hopeless about his future.C. He was discouraged to try any sport.D. He couldn’t get any support from others.26. What can we infer from Paragraph 3?A. He succeeded in getting rid of drugs.B. He showed trust in the professionals.C. He often communicated with his mother.D. He didn’t care about letting her mother down.27. What does the text mainly talk about?A. Drugs for a teen’s growth.B. The importance of love for a teen.C. A trip inside the mind of an addicted teen.D. The influence of parents’ divorce on a teen.CSharing BeautyIt was in October. I was aimlessly wandering down the street, heading into a most gloriously beautiful sunset. I had an urge to speak to someone on the street to share that beauty, but it seemed everyone was in a hurry.I took the next-best action. Quickly I ducked into a department store and asked the lady behind the counter if she could come outside for just a minute. She looked at me as though I were from some other planet. She hesitated, and then seemingly against her better judgment, she moved toward the door.When she got outside I said to her, “Just look at that sunset! Nobody out here was looking at it and I just had to share it with someone.”For a few seconds we just looked. Then I said, “God is in his heaven and all is right with the world.” I thanked her for coming out to see it; she went back inside and I left. It felt good to share the beauty.Four years later my situation changed greatly. I came to the end of a twenty-year marriage. I was alone and on my own for the first time in my life. I lived in a trailer park which, at the time, I considered a real come-down, and I had to do my wash in the community laundry room.One day, while my clothes were going around, I picked up a magazine and read an article about a woman who had been in similar circumstances. She had come to the end of a marriage, moved to a strange community, and the only job she could find was one she disliked: clothing sales in a department store.Then something that happened to her changed everything. She said a woman came into her department store and asked her to step outside to look at a sunset. The stranger had said, “God is in his heaven and all is right with the world,” and she h ad realized the truth in that statement. From that moment on, she turned her life around.28. The author asked the woman to go outside to ______.A. admire the sunsetB. cheer her upC. offer some helpD. have a chat29. Four years later, the author ______.A. found her dream jobB. put an end to her marriageC. worked in a laundry roomD. lived in the same community30. After reading the article in the magazine, the author was probably______.A. disappointedB. puzzledC. inspiredD. overjoyedDWhat is language for? Some people seem to think it's for practising grammar rules and learning lists of words—the longer the lists,the better. That's wrong. Language is for the exchange(交流)of ideas and information. It's meaningless knowing all about a language if you can't use it freely. Many students I have met know hundreds of grammar rules, but they can't speak correctly or fluently(流利地). They are afraid of making mistakes. One shouldn't be afraid of making mistakes when speaking a foreign language. Native speakers make mistakes and break rules, too. Bernard Shaw once wrote, "Foreigners often speak English too correctly. "But the mistakes that native speakers make are different from those that Chinese students make. They're English mistakes in the English language. And if enough native speakers break a rule, it is no longer a rule. What used to be wrong becomes right. People not only make history, they make language. But a people can only make its own language. It can't make another people's language. So Chinese students of English should pay attention to grammar, but they shouldn't overdo(做过头)it. They should put communication(交际)first.31.Language is used to ________.A. express oneselfB. practice grammar rulesC. talk with foreigners onlyD. learn lists of words 32.Generally, when an American or an Englishman speaks English, he ________.A. never makes mistakesB. often makes mistakesC. can't avoid making mistakesD. always makes mistakes33."Foreigners often speak English too correctly. "This sentence means that ________.A. foreigners speak correct EnglishB. foreigners speak incorrect EnglishC. foreigners speak English according to the grammar rulesD. foreigners never make mistakes when they speak English34.If too many native speakers break a rule, ________.A. what they use will become rightB. they are against the lawC. they should say sorry to othersD. they will become heroes第三部分英语知识运用(共两节,满分45分)第一节完形填空(共20小题;每小题1.5分,满分30分)阅读下面短文,从短文后各题所给的四个选项(A、B、C和D),选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

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