2016年安庆市高三模拟考试(二模)试卷(含解析)
安徽省安庆市2016届高三第二次模拟考试化学试卷(扫描版).pdf

2016年安庆市高三模拟考试(二模) 理科综合能力测试试题参考答案 一、选择题:本题包括13小题,每小题6分。
在每小题给出的四个选项中,只有一项符合题目要求。
7. C 8.D 9.A 10.B 11.A 12.C 13.B (14分)(1)生成微溶的Ca(OH)2,致使m2数值偏大(2分) (2)使生成的CO2完全被碱石灰吸收(1分) 防止空气中水和二氧化碳进入b中(1分) 低(因稀盐酸易挥发,使m3数值偏大)(1分) (3)溶液由黄色变成橙色,且半分钟内不变黄(2分) (53×cV×10-3-m1)×39/14m1×100%(3分) 设纯度为a,由关系式Na2O2------2HCl及Na2CO3------2HCl知: 2m1a/78+2m1(1-a)/106=cV×10-3 整理得:a=(53×cV×10-3-m1)×39/14m1×100% (4)酚酞在浓的NaOH溶液中先变红后褪色,且碱浓度越大、褪色越快。
(合理即可)(2分) 取两份等量的反应液于试管中,向其中一支试管加入少量二氧化锰并微热,滴几滴酚酞,溶液变红且不褪色,另一支试管中直接加入几滴酚酞,溶液变红后又褪色,说明假设二成立(或其他合理答案) (2分) 27.(14分)(1)CuO(1分),将固体A粉碎为粉末(合理答案均可) (1分) (2)Fe(OH)3(多写了CuO不扣分)(2分), 避免Cu2+反应生成沉淀 (1分) (3)2Cu2+ +SO32-+2Clˉ+H2O=2CuCl↓+SO42-+2H (2分) 乙醇(2分),氮气(或其他合理气体) (1分) (4)Cu2Cl2(1分),共价 (1分) (5)2CuCl+H2O Cu2O↓+2HCl (2分) (15分) (1)-399.7 (3分) 正向 (1分) (2)(3分) (3)I2+SO2+2H2O=SO42-+2I-+4H+ (2分) (4)② (2分) 1 (2分) B (2分) (二)选考题:共45分。
(解析版)安徽省安庆市2016届高三下学期第二次模拟考试英语试卷

安徽省安庆市2016届高三下学期第二次模拟考试英语试卷【解析版】一、阅读理解(共4小题)1.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。
并在答题卡上将该选项涂黑。
ALONDON—The Britain-China relationship will be "greater" this year after a "golden" year of 2015,Prime Minister David Cameron said at a reception in his office attended by about 100 representatives from Britain and China to celebrate the Chinese Lunar New Year.“If you want one year of harvest,grow grain.If you want ten years of harvest,grow trees.If you want a thousand years of harvest,grow relationships between people and people,Cameron used a Chinese saying to explain the reason why they engaged in the building of this great relationship between Britain and China.Speaking highly of Chinese President Xi Jinping's visit to Britain last year,Cameron said it not only helped build up a golden age of bilateral(双边的)relationship,but also led to deals worth around 40 billion pounds ($57.7 billion).It's reported that Britain accounts for around 30 percent of China s total investment (投资)in Europe.According to the British government,Britain is also China”s second latest exporter in Europe."It is great when you think about how deep and strong the relationshipis,” said Cameron,adding that the two countries are working closely with each other in areas of trade,investment,finance,education and so on.“I think education is an area we can take to an even higher level.Many Chinese students are studying in Britain.I would like to see more British students take the opportunities to go and study in China.I think there is a huge opportunity in the years ahead.” Cameron said.1.What was the main reason for Cameron to hold the reception?A.To treat some successful people from Britain and China.B.To describe the relations between Britain and China.C.To welcome Chinese President Xi Jinping’s visit to Britain.D.To celebrate the Spring Festival with British and Chinese representatives.2.What can be learned from the passage?A.Britain accounts for about 30% of China’s total investment.B.Britain is China’s second largest exporter.C.The total of trade in Britain was around 40 billion pounds last year.D.The two countries are cooperating closely in many areas.3.Which area did Cameron especially expect to promote in the near future?A.Trade.B.InvestmentC.Education.D.Finance.2. B I wasn’t sure what this work involved,but it must have been exciting because the Lab itself was exciting.Anywhere we didn’t go often was exciting.We would get there in a heavy wooden rowboat,built in the five-house village half a mile away --- our mother would row,she was quite good at it ---or by following a twisty,winding footpath,over fallen trees and around rocks.It was too far for us to walk and our legs were too short,so mostly we went in the rowboat.The Lab was made of wood; it seemed huge,though in the two photographs of it that survive it looks like a small house.Inside it there were things we weren’t allowed to touch – bottles containing a dangerous liquid in which young white insects floated,their six tiny front legs held together like praying fingers,and plugs that smelled like poison and plates with dried insects.All of this was so forbidden which made us confused.At the Lab we could hide in the ice house,a dark and secret place that was always bigger on the inside than it was on the outside,where there was a silence,and a lot of sawdust(木屑) to keep the blocks of ice cool.What did we do in there? There was nothing to actually do.We’d pretended we had disappeared suddenly – that nobody knew where we were.This in itself was strangely energetic.Then we’d come out,away from the silence,back into the pine-needle fragrance and the sound of waves beating against the shore,and our mother’s voice calling us,because it was time to get back into the rowboat and row home.1.In Line 1,“this wok” clearly refers to _______.A.WritingB.food scienceC.photographyD.insect research2.The details of the passage suggest that the author is _______.A.an adult remembering a recent incidentB.an elderly person thinking of her middle ageC.an adult looking back on a place from childhoodD.a child describing a frightening place3.The description of the Lab and ice house are similar in that both _______.A.emphasize cheerful and light-hearted surroundingsB.contain pictures of hidings and secrecyC.stress the author’s misunderstanding of the sizeD.make comparisons with the author’s home.4.Repeatedly using the pronouns “we” and “us”,the author most likely speaks of herself and _____.A.a brother or sisterB.her motherC.her fatherD.the reader3.C WeChat,the Chinese social media smartphone app,saw an increase in user numbers of 41 per cent year on year to 500m at the end of 2014,in a sign that parent company Tencent is extending its reach for the mobile internet.Revenue grew 24 per cent to Rmb20.98bn,slightly higher than forecasts,driven mainly by online gaming revenues.It is unclear how much WeChat contributed to Tencent’s revenues but the app’s growth is a strong indicator of the company’s long-term health as it tries to adjust its business to be more suitable for mobile devices.“We extended our leadership in games and online media,and made breakthroughs in emerging platforms such as online security …… and mobile payments,” Ma H uateng,Tencent chairman,said in a statement.WeChat is the second highest ranked app in China,behind QQ,Tencent’sother chatting app,which claimed to have 815m registered monthly users at the end of 2014.However,that figure is more than the total number of internet users in China,which the government puts at 649m.Tencent has been reluctant to monetise WeChat by flooding it with advertising,which could impair efforts to increase the user base.But this is expected to change.Some analysts anticipated that advertising would be introduced on a large scale later this year.Early attempts to test ads on the service have not always gone smoothly.After a BMW ad was introduced on some users’ feeds in January,many users who were not targeted by the luxury brand’s marketing complained of “discrimination” by Tencent’s data mining algorithm.They claimed it unfairly profiled them as not wealthy or successful enough to view the sought-after BMW ad.1.What is the main driving force of the Tencent’s income growth?A.QQB.WeChatC.Online gamingD.Advertisments2.what can we learn from the passage?A.WeChat contributed most to Tencent’s profits.B.WeChat is ranked behind app QQ in China.C.Tencent wants to earn more through QQD.More advertising would not be introduced later this year.3.What’s some users’ reaction after a BMWad was introduced?A.UnfairB.UntouchedC.UnclearD.Uninterested4.What’s the best title of this passage?A.WeChat,the Most Popular APP in China NowB.Mobile Internet,the Most Potential Market for TencentC.Advertisements,the Most Improtant Part of Tencent’s IncomeD.Tencent,the Most Influential Company in China4.D Between about 1910 and 1930,new artistic movements in European art were making themselves felt in the United States.American artists become acquainted with the new art on their trips to Paris and at the exhibitions in the famous New York gallery “291” of the photographer Alfred Stieglitz.But most important in the spread of the modern movements in the United States was the sensational Armory Show of 192-13 in New York,in which the works of a number of progressive American painters were shown.Several of the American modernists who were influenced by the Armory Show found the urban landscapes,especially New York,an appealing subject.Compared with the works of the realist painters,the works of American modernists were much removed from the actual appearance of the city; they were more interestedin the “feel ” of the “Ash Can School” and the later realists were st illtied to nineteenth-century or earlier styles,while the early modernists shared in the international breakthroughs of the art of the twentieth century.The greatest of these breakthroughs was Cubism,developed most fully in France between 1907 and 1914,which brought about a major revolution in Western painting.It overturned the rational tradition that had been built upon since the Renaissance.In Cubism,natural forms were broken down analytically into geometric shapes.No longer was a clear differentiation made between the figureand the background of a painting: objects represented and the surface on which they were painted became one.The Cubism abandoned the conventional single vantage point of the viewer,and objects depicted from multiple viewpoints were shown at the same time.1.what does the passage mainly talk about?A.The development of CubismB.Modern art movements in USC.Contempary artists in USD.The influence of photography2.American artists learned about new artistc movements through the following means EXCEPT__________A.lessons from successful artistsB.the Mrmory Show of 1913C.trips to EuropeD.the exhibitions at the gallery “291”3.Why does the author mention Alfred Stieglitz?A.To show photography was the major influence in modern art.B.To compare him ti the other artists of his time.C.To point out many artists learned from him.D.To give an example of somenone who influenced modern art.4.According to the author,which of the following was a favorite subject for American modernists?A.Portraits of famous people.B.Country scenes.C.Pictures of buildings' interiors.D.City landscapes.二、信息匹配(共1小题)5.根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。
2016年安庆“二模”数学(理科)答案

2016年安庆市高三模拟考试(二模) 数学试题(理科)参考答案及评分标准一、选择题1. 解析: {}21012P =--,,,,,{}012,3Q =,,, P Q ={}012,,.2. 解析:i 21(2)i2i 5a a a +-++=-,212a a -=+,3a =. 3. 解析: 若 C B A <+,则.2π>C 但反之不然. 4. 解析: ∵609.72016ln ≈,∴8e 2016>∴ 8i =时,符合2016a ≥,∴ 输出的结果8i =.5. 解析: 由11n n a a λ+=-,得1212()n n n a a a λλλ+-=-=-.由于数列{1}n a -是等比数列,所以21λ=,得2λ=.6. 解析: 由图象可知2A =,311341264T πππ=-=,所以T π=,故2ω=. 由11()212f π=-,得23k πϕπ=-(Z k ∈). ∵2πϕ= ∴3πϕ-= 所以()2sin(2)3f x x π=-. 由2(22)322x k k πππππ-∈-+,(Z k ∈),得5()1212x k k ππππ∈-+,(Z k ∈). 或:311341264T πππ=-=,所以T π=,646412T ππππ-=-=-, 5646412T ππππ+=+=,所以()f x 的单增区间是5()1212k k ππππ-+,(Z k ∈).7. 解析:()34cos sin f x x x '=++,()4sin cos 0f x x x ''=-+=,004sin cos 0x x -=,所以003)(x x f =,故00(())M x f x ,在直线x y 3=上.8. 解析:DE BF ⋅= 22115115()()224224CB CD CD CB CB CD CD CB --=⋅--=- .由2CD AB == ,1BC AD ==,可得1cos 2CB CD 〈〉= ,, 所以3CB CD π〈〉= ,,从而3AB AD π〈〉= ,. 9. 解析:如图,先作出点()P x y ,所在的平面区域.22)1(++y x 表示动点P 到定点(01)Q -,距离的平方. 当点P 在(10)-,时, 22PQ =,而点Q 到直线012=+-y x的距离的平方为925<;当点P 在(02), 时,离Q 最远,92=PQ .因此22)1(++y x 的最大值为9,最小值为95. 10. 解析:显然PF PA >,PF AF >,所以由PAF ∆是等腰三角形得PA AF =.易知A (0)a ,,P 2()a ab c c , ,所以2222()()()a aba c a c c -+=-, 222222()()()()()a a a c c a c a c c ⇒-+-=-22()()1a a c ac c c a +⇒+=-2211111e e e e +⇒+=-. 解得 2e =. 11. 解析: 该几何体是一个直三棱柱截去一个小三棱锥,如图所示,则其体积为:611111213121221=⨯⨯⨯⨯-⨯⨯⨯=V .12. 解析:001()1111x x x f x x <<<⎧⎪=⎨--⎪+⎩≤, ,.作函数()y f x =的图象,如图所示.函数()g x 零点的个数⇔函数()y f x =的图象与直线4y mx m =+交点的个数.当直线4y mx m =+过点(11),时,15m =;当直 线4y mx m =+与曲线111y x =-+(01x <<-) 相切时,可求得1m =-. 根据图象可知当15m ≥或1m =-时,函数()g x 在区间(11),-上有且仅有一个零点. 二、填空题13. 解析:抛物线26y x =的准线2x =-,圆心(21),-到其距离等于(2)22---=. 1=. 14. 解析:展开后的通项是nm n mnm mxx C C ----⋅⋅333)4()4(,当n m =时为常数.于是m m mm mm nm n mnm mxx C C xx C C 2333333)4()4()4()4(------⋅⋅=-⋅⋅. 若0m =,则3(4)64-=-;若1m =,则11324(4)96C C ⋅⋅-=-.故常数项是.1609664-=-- 或:63)2()44(xx x x -=-+展开后的通项是k kk k k k x C xx C 26666)()2()2()(---=-⋅. 令620k -=,得3k =. 所以常数项是336(2)160C -=-.15. 解析:如图,因为平面BDC ⊥平面ABD (折成直二面角),所以AB ⊥平面BDC ,CD ⊥平面ABD ,得.AD CD BC AB ⊥⊥, 取AC 的中点O ,则OD OC OB OA ===. 于是外接球的球心是O ,12OA AC =,2214OA AC =.而.21)24(2122222222=+=+=+=BD AB BD AB BC AB AC所以半径.4221==AC OA 于是外接球的表面积为242S OA ππ=⋅=.16.解析:n n a a =⇒=,2(21)n n a n a ⇒=- 21n a n ⇒=-,*∈N n .8nn a nλ+≤就是(8)(21)8215n n n n n λλ+-⇒-+≤≤. 8215n n-+在1n ≥时单调递增,其最小为9,所以9λ≤, 故实数λ的最大值为9.三、解答题17.解析:(Ⅰ)在△ABC 中,根据正弦定理,有sin sin AC DCADC DAC=∠∠.因为AC =,所以sin ADC DAC ∠=∠=. 又6060>+∠=∠+∠=∠B BAD B ADC所以120ADC ∠=°. ……………3分于是3030120180=--=∠C ,所以60B ∠=°. ……………6分(Ⅱ)设DC x =,则2BD x =,3BC x =,AC =.于是sin AC B BC ==,cos B =,.6x AB = ……………9分 在ABD ∆中,由余弦定理,得 2222cos AD AB BD AB BD B =+-⋅,即222264222x x x x =+-⨯= ,得2x =. 故.2=DC ……………12分18.解析:(Ⅰ)证明: G//G A EF A ⇒与EF 共面.由平面//ADE 平面//BCFG AE FG ⇒⇒ 四边形AEFG 为平行四边形.连接AF 交EG 于M ,连接AC ,BD 交于O , 连接MO ,如图1所示. 则//MO CF ,且12MO CF BG ==, 故BOMG 为平行四边形,所以//MG BO . 又BO ⊂平面ABCD ,MG ⊄平面ABCD ,所以//MG 平面ABCD ,即//EG 平面ABCD . ……………6分 (Ⅱ)解法一、CF ABCD CF DBABCD BD ACCF AC ABCD CF AC O⊥⇒⊥⎫⎪⇒⊥⎬⎪⊂=⎭平面四边形是菱形面且、B D AC F⇒⊥平面.由(Ⅰ)知//EG BD,所以EG ACF⊥平面AEFG ACF⇒⊥平面平面.因为平面AEFG 平面=ACF AF,C∈平面ACF,所以点C在平面AEFG 内的射影落在AF上,故FC与平面AEFG所成的角就是AFC∠.在Rt AFC∆中,55422sin22=+==∠AFACAFC,所以FC与平面AEG所成角的正弦为55. ……………12分解法二、由(Ⅰ)易知,.2==BGDE以O为坐标原点,分别以直线AC、BD为x、y轴,建立空间直角坐标系xyzO-,如图2所示.则有(100)A,,、(02)E,,(02)G,(100)C-,,,(104)F-,,,所以(12)AE=-,,(00)EG=,,(004)CF=,,.设面AEG的法向量为()n x y z=,,,由n AE⊥,n EG⊥,得200.x z⎧-+=⎪⎨=⎪⎩,令1=z,则2=xACF =C所以(201)n = ,,,于是cos n CF <>== , ………10分故直线CF 与平面AEG 所成角的正弦值为.55………12分 19. 解析:(Ⅰ)因为22400(6012014080)4004.3956 3.84114026020020091K ⨯⨯-⨯==≈>⨯⨯⨯, 所以有95%把握认为“是否赞成禁放烟花爆竹”与“年龄结构”有关.……… 5分(Ⅱ)因为140:1207:6=,所以13人中有老年人7人,中青年人6人. 那么2000X =,1500,1000. ……… 7分26213C 5(2000)C 26P X ===,1176213C C 7(1500)C 13P X ===,27213C 7(1000)C 26P X ===,所以X 的分布列为所以 200015001000146226132613EX =⨯+⨯+⨯=≈. ……… 12分20. 解析:(Ⅰ)圆A 的圆心为(0)A ,半径14r =.设动圆M 的半径为2r ,依题意有2||r MB =.由 ||AB =,可知点B 在圆A 内,从而圆M 内切于圆A ,故12||MA r r =-, 即 ||||4MA MB +=32>.所以动点M 的轨迹E 是以A 、B 为焦点,长轴长为4的椭圆,其方程为1422=+y x . …………5分(Ⅱ) 设直线l 的方程为(0)y kx b k =+≠,联立2244y kx b x y =+⎧⎨+=⎩,,消去y 得,222(14)8440k x kbx b +++-=, 2216(41)k b ∆=-+.设11()P x kx b +,,11()Q x kx b +,,则122814kb x x k +=-+,21224414b x x k -=+. …………7分于是=+Q N PNk k 12121212112(4)()844(4)(4)kx b kx b kx x k b x x b x x x x ++--+-+=----,由ONP ONQ ∠=∠知0=+Q N PN k k .即 21212224482(4)()82(4)81414b kbkx x k b x x b k k b b k k----+-=---++ 3222288328801414k k k b kb b k k --=+-=++,得b k =-,216(31)0k ∆=+>. 故动直线l 的方程为y kx k =-,过定点(10),. …………12分 21. 解析:(Ⅰ)因为()2(1)f x x '=-,2ln ()a xg x x'=, ……… 2分 所以()2(1)f e e '=-,2ln 2()a e ag e e e'==. 由()()f e g e ''=,得2a e e =-. ……… 5分(Ⅱ)222()2(1)m x x mh x x x x-+'=-+=,0x >.因为()h x 有两个极值点1x ,2x ,所以1x ,2x 是方程2220x x m -+=的两个实数根,.121=+x x 而120x x <<,所以1212<<x . 因为22222m x x =-+,所以2222222()(1)(22)ln h x x x x x =-+-. ……… 8分令()t ϕ=22(1)(22)ln t t t t -+-,121<<t . 则21()2(1)(24)ln (22)2(12)ln 0t t t t t t t t tϕ'=-+-+-⋅=->,所以()t ϕ在1(1)2,内是增函数. 于是112ln 2()()24t ϕϕ->=, 即212ln 2()4h x ->. ……… 12分22.解析:(Ⅰ)如图,连接OD .因为O 是AB 的中点,D 是BC 的中点, 所以 OD //AC .因为AC DE ⊥,所以OD DE ⊥,所以DE 是⊙O 的切线. ………… 5分(Ⅱ)因为AB 是⊙O 的直径,点D 在⊙O 上,所以BC AD ⊥.又D 是BC 的中点,所以 AB AC =. 故30=∠=∠B ACD . 因为AC DE ⊥,所以30=∠ADE . 在直角三角形AED 中,30tan =DEAE; 在直角三角形DEC 中,30sin =DCDE. 于是633321=⨯=DE AE . ………… 10分 23.解析:(Ⅰ)当2π=a 时,直线l 的普通方程为1x =-;当2π≠a 时,直线l 的普通方程为(tan )(1)y x a =+. ………… 2分由θρcos 2=,得θρρcos 22=,所以222x y x +=,即为曲线C 的直角坐标方程. ………… 4分(Ⅱ)把a t x cos 1+-=,sin y t a =代入222x y x +=,整理得24cos 30t t a -+=.由012cos 162=-=∆α,得23cos 4=a ,所以cos =a 或cos =a - 故直线l 倾斜角α为6π或56π. ………… 10分24.解析:(Ⅰ)2=a 时,1)(<x f 就是.123<+--x x当2-<x 时,321x x -++<,得51<,不成立;当23x -<≤时,321x x ---<,得0x >,所以30<<x ; 当3x ≥时,321x x ---<,即51-<,恒成立,所以3x ≥.综上可知,不等式1)(<x f 的解集是(0)+∞,. …………5分(Ⅱ) 因为()3(3)()3f x x x a x x a a =--+--+=+≤,所以)(x f 的最大值为3+a .对于任意实数x ,恒有()2f x a ≤成立等价于32a a +≤. 当3a -≥时,32a a +≤,得3a ≥; 当3a <-时,32a a --≤,1a -≥,不成立.综上,所求a 的取值范围是[3)+∞,………… 10分。
安徽省安庆市2016届高三下学期第二次模拟考试文数试题 含解析

第Ⅰ卷(共60分)本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(必考题和选考题两部分).考生作答时,将答案答在答题卡上,在本试卷上答题无效.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. 已知集合{}A x x x=-≤∈R,{}11,=≤∈Ζ,则A B=( )2,B x x xA.()0,20,2B.[]0,2C.{}D.{}0,1,2【答案】D【解析】试题分析:}{{}}{=≤≤=∴=。
故选D。
A x xB A B02,0,1,2,3,4,0,1,2考点:集合运算。
2。
已知复数z满足()()2+=-,则z的共轭复数的虚部为()z1i1iA.2B.2-C.1-D.1【答案】D考点:复数的概念及运算。
3。
设角A,B,C是ABC∆是钝角三+"是“ABCA<B∆的三个内角,则“C角形”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】A 【解析】 试题分析:若C B A <+,则.2π>C 若ABC ∆是钝角三角形,则C 不一定为钝角,C B A <+不一定成立,故选A. 考点:充分条件与必要条件。
4. 如图所示的算法框图中,e 是自然对数的底数,则输出的i 的值为(参考数值:ln 20167.609≈)( )A .5B .6C .7D .8【答案】D 【解析】试题分析:∵609.72016ln ≈,∴8e 2016>∴ 8i =时,符合2016a ≥,∴ 输出的结果8i =,故选D 。
考点:程序框图。
5。
双曲线:C 22221x y a b-=(0a >,0b >)的一条渐近线方程为2y x =,则C 的离心率是( ) A .5B .2C .2D .52【答案】A考点:双曲线的性质.6。
已知0a >,0b >,11a b ab+=+,则12ab+的最小值为( )A .4B .22C .8D .16 【答案】B 【解析】试题分析:由abb a b a b a +=+=+11有1=ab ,则ba 21+22212=⨯≥ba ,故选B 。
2016年安庆“二模”文综试题及答案(适合全国卷)

2016年安庆市高三模拟考试(二模)文科综合能力测试试题参考答案第Ⅰ卷(选择题共140分)一、选择题二、非选择题36.(22分)(1)七月份太阳直射北半球,此时气温低,对流运动弱;来自海洋的东南信风的风向与海岸线平行,降水少;沿岸地区地势较平坦,地形雨少。
(6分)(2)有利:在离岸风吹拂下,沿岸盛行上升流,渔业资源丰富;晴天多,降水少,风浪小,利于渔业生产和捕捞。
不利:受寒流影响多雾,能见度低,不利于捕捞作业和运输;气温高,水产品易腐烂变质,不易储存。
(8分)(3)增加出口新通道,向西就近出口欧美市场,扩大了产品销售量;节省了产品运输费用和运输时间,提高了经济效益。
(4分)(4)赞同理由:该铁路直接连接非洲南部的东西海岸,运输更加便捷,可以分流好望角航线的运输量;缩短了东西海岸的运输距离,节约运输成本。
(4分)或者不赞同理由:与海运相比,铁路运输量较小,对好望角海运航线影响不大;好望角航线主要是运输石油,如果改为铁路运输,需在港口装卸中转,成本高。
(4分)37.(24分)(1)补给区海拔在5000米以上,水源地附近没有任何工业污染,为纯天然饮用水;地壳运动频繁,经地下多年深层循环后,富含对人体健康有益的矿物质和微量元素,水质优,水量大;西部大开发,国家政策的支持;青藏铁路的开通,加快产品外运;随着经济发展,高端矿泉水需求量大等。
(10分)(2)5100西藏冰川矿泉水的水源来自冰川;冰川水具有“冰晶”结构,异于普通水,凝固点较低;冰川矿泉水里含有丰富的矿物质,使冰川矿泉水的凝固点变得更低。
(6分)(3)在水源地建立保护区,防止水污染;适量开采,严禁超量开采,使矿泉水达到永续文科综合答案(共5页)第1页利用;加大勘探,寻找新的矿泉水产地;加强管理,节约水资源,避免浪费;加大品牌宣传,提高高端品质矿泉水的市场知名度,扩大市场需求等。
(任答四点,得8分)38.(26分)(1)①政府必须审慎行使权力,坚持科学决策、民主决策和依法决策,使公共政策符合市场规律,反映市场需求,从而激发产业、企业的活力。
安徽省安庆市2016年高三第二次模拟地理试题及答案考试

2016年安庆市高三模拟考试(二模)文科综合能力测试地理试题注意事项:1. 本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。
答题前,考生务必在将自己的姓名、准考证号填写在本试卷和答题卡相应位置上。
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,再选涂其他答案标号。
写在试卷上无效。
3.回答第Ⅱ卷时,将答案写在答题卡上,写在试卷上无效。
4.考试结束后,将本试卷和答题卡一并交回。
第Ⅰ卷(选择题共140分)本卷共35个小题。
每小题4分,共140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。
城市道路绿化布置形式多样,“二板三带式”即道路被中间一条绿化带隔离成单向行驶的两条车行道和两条行道树。
图1为二板三带式道路绿化断面。
据此完成1~2题。
1. 人行道上绿化带的作用①涵养水源,减轻内涝②吸烟滞尘,净化空气③调节气候,为行人庇荫④减弱噪音,美化环境A.①②③B.②③④C.①②④D.①③④2.“二板三带式”的优点有A.用地经济,管理方便简单B.车辆之间,互不干扰和影响C.绿地较广,投资费用很大D.人行道与车行道分离,安全性好定西位于甘肃省东南部,是青藏高原与黄土高原的交汇地带,海拔1420-3941米,独特的地理环境为马铃薯的生产提供了有利条件,有“中国薯都”之称,产品部分出口。
图2为甘肃省定西位置示意图。
据此完成3~5题。
3. 定西成为“中国薯都”的优势条件是A.复杂气候,品种多样B.地势平坦,利于耕作C.濒临黄河,水源充足D.公路发达,利于外运4. 定西马铃薯种植业的发展,直接带动了A.旅游产业B.食品加工业C.建筑和建材业D.高新技术产业5. 定西马铃薯出口国外,最有可能的是A.美国B.澳大利亚C.哈萨克斯坦D.法国为打击索马里海盗,吉布提港逐渐成为各国军舰后勤物资补给基地。
2014年8月,中国企业中标吉布提港口码头建设,一旦多功能码头建成,吉布提将成为区域航运和物流中心。
安徽省安庆市2016届高三下学期第二次模拟考试历史试题及答案1
2016年安庆市高三模拟考试(二模)文科综合历史能力测试试题第Ⅰ卷(选择题共140分)本卷共35个小题。
每小题4分,共140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。
24.春秋战国时期,“克敌者,上大夫受县,下大夫受郡”,“在腹里繁华之地称为县,在边鄙之地则称为郡。
”这表明春秋战国时期A.设置郡县是领土扩张的需要 B.血缘关系是士大夫受郡受县的依据C.从血缘政治向地缘政治过渡 D.县的地位高于郡,郡县两级制形成25.欧阳修指出:今大率一户之田及百顷者,养客数十家;其间用主牛而出己力者、用己牛而事主田以分利者,不过十余户,其余皆出产租而侨居者曰浮客。
这表明北宋时期A.封建租佃关系比较发达 B.佃户源于破产的自耕农C.佃户之间产生协作关系 D.劳动力商品化程度提高26.明代王守仁是心学集大成者。
“致良知”是其心学主旨,认为良知人人具有,是一种不假外力的内在力量,即人心固有的是非善恶标准。
“致良知”的途径是A.格物致知 B.发明本心 C.知行合一D.行优于知27.陈独秀主张国民应该“脱离夫奴隶之羁绊,以完其自主自由之人格……盖自认为独立自主之人格以上,一切操行,一切权利,一切信仰,惟有听命各自固有之智能,断无盲从隶属他人之理。
”这体现了陈独秀A.倡导天赋人权的思想 B.认为人权取决于智能C.崇尚无政府主义状态 D.主张人性自由与解放28.中共一大提出党的纲领是“革命军队必须与无产阶级一起推翻资本家阶级的政权。
”二大提出党的最高纲领是实现共产主义,最低纲领是打倒军阀,推翻国际帝国主义的压迫,统一中国为真正的民主共和国。
这说明中国共产党A.开始改变中国革命的道路 B.认清中国社会性质和革命性质C.认识到建立军队的重要性 D.与资产阶级的革命对象相一致29.19世纪晚期《纽约时报》社论说:“令人不可思议的是,中国政府认为这些学生,他们花的是政府的钱,就应该只学习工程、数学和其它自然科学,对他们周围的政治和社会要无动于衷,这种想法是荒唐可笑的。
2016年安庆市高三模拟考试
2016年安庆市高三模拟考试(二模)班级:_________________ 姓名:__________________一、选择题1.下列有关细胞化合物的叙述中,正确的是()A.组成磷脂、ATP和核酸的元素相同B.组成胰岛素、生长素、纤维素的单体相同C.用双缩脲试剂检测酶溶液均能观察到紫色反应D.核糖、脱氧核糖等糖类中氢、氧原子数比是2 :12.下图为某动物细胞内部分蛋白质合成及转运的示意图,据图分析下列有关叙述错误的是()A.高尔基体对其加工的蛋白质先进行分类再转运至细胞的不同部位B.附着核糖体合成的多肽通过囊泡运输到内质网加工C.分泌蛋白经细胞膜分泌到细胞外体现了生物膜的结构特点D.细胞膜上的糖蛋白的形成经内质网和髙尔基体的加工3.皱粒豌豆的淀粉分支酶基因中,因插入了一段外来DNA 序列导致该酶不能合成,从而引起种子细胞内淀粉含量降低,游离蔗糖含量升高,这样的豌豆虽皱但味道更甜。
下列有关分析错误的是()A.基因可通过控制酶的合成间接控制生物性状B.该实例体现了基因性状之间的一一对应关系C.该变异的发生有可能会导致翻译过程提前终止D.该变异导致基因结构的改变,属于基因突变4.某常染色体遗传病中,基因型为AA的人都患病,Aa 的人有50%患病,aa的人都正常。
下图的两个患病家系中,己知亲代中4号与其他三人的基因型不同。
下列分析判断正确的是()A.子代的4人中,能确定出基因型的只有7号B.6号与7号基因型相同的概率为1/2C.两个家庭再生孩子患病的概率相等D.若5号与7号结婚,生育患病孩子的概率为5/165.神经肽Y是由下丘脑神经分泌细胞分泌的激素,在体液调节中起到重要作用。
为研究神经肽Y对前脂肪细胞增殖和分化的影响。
科研小组进行了如下实验(其它条件相同且适宜:“+”的多少表示相对数量的多少)。
下列相关分析错误的是()A.甲组为对照组,实验的自变量是神经肽Y的浓度B.动物体内神经肽Y分泌增多,有可能会导致肥胖C.神经肽Y分泌后只运输到相应的靶细胞发挥作用D.神经肽Y能够促进前脂肪细胞的增殖和分化6.啮齿类动物如兔、鼠等主要以植物为食,右下图表表示某草原上啮齿类动物密度与植物种类数的关系,据图判断下列叙述错误的是()A.啮齿类的存在可能会引起部分植物种群密度增大B.啮齿类的存在可定向改变某些植物种群的基因频率C.啮齿类动物的适度有利于提高草原上植物的多样性D.随着啮齿类密度的增加植物种群密度呈现出先升后降趋势二、综合题29. (10分)小麦最后长出的—片叶子称为旗叶。
安徽省安庆市2016届高三下学期第二次模拟考试英语试卷【解析版】
安徽省安庆市2016届高三下学期第二次模拟考试英语试卷【解析版】一、阅读理解(共4小题)1.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。
并在答题卡上将该选项涂黑。
ALONDON—The Britain-China relationship will be "greater" this year after a "golden" year of 2015,Prime Minister David Cameron said at a reception in his office attended by about 100 representatives from Britain and China to celebrate the Chinese Lunar New Year.―If you want one year of harvest,grow grain.If you want ten years of harvest,grow trees.If you want a thousand years of harvest,grow relationships between people and people,Cameron used a Chinese saying to explain the reason why they engaged in the building of this great relationship between Britain and China.Speaking highly of Chinese President Xi Jinping's visit to Britain last year,Cameron said it not only helped build up a golden age of bilateral(双边的)relationship,but also led to deals worth around 40 billion pounds ($57.7 billion).It's reported that Britain accounts for around 30 percent of China s total investment (投资)in Europe.According to the British government,Britain is also China‖s second latest exporter in Europe."It is great when you think about how deep and strong the relationship is,‖ said Cameron,adding that the two countries are working closely with each other in areas of trade,investment,finance,education and so on.―I think education is an area we can take to an even higher level.Many Chinese students are studying in Britain.I would like to see more British students take the opportunities to go and study in China.I think there is a huge opportunity in the years ahead.‖ Cameron said.1.What was the main reason for Cameron to hold the reception?A.To treat some successful people from Britain and China.B.To describe the relations between Britain and China.C.To welcome Chinese President Xi Jinping’s visit to Britain.D.To celebrate the Spring Festival with British and Chinese representatives.2.What can be learned from the passage?A.Britain accounts for about 30% of China’s total investment.B.Britain is China’s second largest exporter.C.The total of trade in Britain was around 40 billion pounds last year.D.The two countries are cooperating closely in many areas.3.Which area did Cameron especially expect to promote in the near future?A.Trade.B.InvestmentC.Education.D.Finance.2.B I wasn’t sure what this work involved,but it must have been exciting because the Lab itself was exciting.Anywhere we didn’t go often was exciting.We would get there in a heavy wooden rowboat,built in the five-house village half a mile away --- our mother would row,she was quite good at it --- or by following a twisty,winding footpath,over fallen trees and around rocks.It was too far for us to walk and our legs were too short,so mostly we went in the rowboat.The Lab was made of wood; it seemed huge,though in the two photographs of it that survive it looks like a small house.Inside it there were things we weren’t allowed to touch – bottles containing a dangerous liquid in which young white insects floated,their six tiny front legs held together like praying fingers,and plugs that smelled like poison and plates with dried insects.All of this was so forbidden which made us confused.At the Lab we could hide in the ice house,a dark and secret place that was always bigger on the inside than it was on the outside,where there was a silence,and a lot of sawdust(木屑) to keep the blocks of ice cool.What did we do in there? There was nothing to actually do.We’d pretended we had disappeared suddenly – that nobody knew where we were.This in itself was strangely energetic.Then we’d come out,away from the silence,back into the pine-needle fragrance and the sound of waves beating against the shore,and our mother’s voice calling us,because it was time to get back into the rowboat and row home.1.In Line 1,―this wok‖ clearly refers to _______.A.WritingB.food scienceC.photographyD.insect research2.The details of the passage suggest that the author is _______.A.an adult remembering a recent incidentB.an elderly person thinking of her middle ageC.an adult looking back on a place from childhoodD.a child describing a frightening place3.The description of the Lab and ice house are similar in that both _______.A.emphasize cheerful and light-hearted surroundingsB.contain pictures of hidings and secrecyC.stress the author’s misunderstanding of the sizeD.make comparisons with the author’s home.4.Repeatedly using the pronouns ―we‖ and ―us‖,the author most likely speaks of herself and_____.A.a brother or sisterB.her motherC.her fatherD.the reader3.C WeChat,the Chinese social media smartphone app,saw an increase in user numbers of 41 per cent year on year to 500m at the end of 2014,in a sign that parent company Tencent is extending its reach for the mobile internet.Revenue grew 24 per cent to Rmb20.98bn,slightly higher than forecasts,driven mainly by online gaming revenues.It is unclear how much WeChat contributed to Tencent’s revenues but the app’s growth is a strong indicator of the co mpany’s long-term health as it tries to adjust its business to be more suitable for mobile devices.―We extended our leadership in games and online media,and made breakthroughs in emerging platforms such as online security …… and mobile payments,‖ Ma H uateng,Tencent chairman,said in a statement.WeChat is the second highest ranked app in China,behind QQ,Tencent’s other chatting app,which claimed to have 815m registered monthly users at the end of 2014.However,that figure is more than the total number of internet users in China,which the government puts at649m.Tencent has been reluctant to monetise WeChat by flooding it with advertising,which could impair efforts to increase the user base.But this is expected to change.Some analysts anticipated that advertising would be introduced on a large scale later this year.Early attempts to test ads on the service have not always gone smoothly.After a BMW ad was introduced on some users’ feeds in January,many users who were not targeted by the luxury brand’s m arketing complained of―discrimination‖ by Tencent’s data mining algorithm.They claimed it unfairly profiled them as not wealthy or successful enough to view the sought-after BMW ad.1.What is the main driving force of the Tencent’s income growth?A.QQB.WeChatC.Online gamingD.Advertisments2.what can we learn from the passage?A.WeChat contributed most to Tencent’s profits.B.WeChat is ranked behind app QQ in China.C.Tencent wants to earn more through QQD.More advertising would not be introduced later this year.3.What’s some users’ reaction after a BMWad was introduced?A.UnfairB.UntouchedC.UnclearD.Uninterested4.What’s the best title of this passage?A.WeChat,the Most Popular APP in China NowB.Mobile Internet,the Most Potential Market for TencentC.Advertisements,the Most Improtant Part of Tencent’s IncomeD.Tencent,the Most Influential Company in China4.D Between about 1910 and 1930,new artistic movements in European art were making themselves felt in the United States.American artists become acquainted with the new art on their trips to Paris and at the exhibitions in the famous New York gallery ―291‖ of the photographerAlfred Stieglitz.But most important in the spread of the modern movements in the United States was the sensational Armory Show of 192-13 in New York,in which the works of a number of progressive American painters were shown.Several of the American modernists who were influenced by the Armory Show found the urban landscapes,especially New York,an appealing subject.Compared with the works of the realist painters,the works of American modernists were much removed from the actual appearance of the city; they were more interested in the ―feel ‖ of the ―Ash Can School‖ and the later realists were st ill tied to nineteenth-century or earlier styles,while the early modernists shared in the international breakthroughs of the art of the twentieth century.The greatest of these breakthroughs was Cubism,developed most fully in France between 1907 and 1914,which brought about a major revolution in Western painting.It overturned the rational tradition that had been built upon since the Renaissance.In Cubism,natural forms were broken down analytically into geometric shapes.No longer was a clear differentiation made between the figure and the background of a painting: objects represented and the surface on which they were painted became one.The Cubism abandoned the conventional single vantage point of the viewer,and objects depicted from multiple viewpoints were shown at the same time.1.what does the passage mainly talk about?A.The development of CubismB.Modern art movements in USC.Contempary artists in USD.The influence of photography2.American artists learned about new artistc movements through the following meansEXCEPT__________A.lessons from successful artistsB.the Mrmory Show of 1913C.trips to EuropeD.the exhibitions at the gallery ―291‖3.Why does the author mention Alfred Stieglitz?A.To show photography was the major influence in modern art.B.To compare him ti the other artists of his time.C.To point out many artists learned from him.D.To give an example of somenone who influenced modern art.4.According to the author,which of the following was a favorite subject for American modernists?A.Portraits of famous people.B.Country scenes.C.Pictures of buildings' interiors.D.City landscapes.二、信息匹配(共1小题)5.根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。
安徽省安庆市2016届高三第二次模拟考试理综化学试题 含答案
说明:1、考试时间:100 分钟;本卷满分: 1 0 0 分2、请将答案填写在答案卷上,考试结束后只交答案卷。
可能用到的相对原子质量:H 1 C 12 N 14 O 16 S 32 Cl35.5 Fe 56 Cu 64Ne 20 Na 23 Mg 24 K 39 Al 27 Ca 40一、选择题(本题包括7小题,每小题6分,共42分,每小题只有一个选项符合题意)7.化学与生产、生活、社会密切相关.下列说法中正确的是A.地沟油不宜食用,可分馏提取汽油B.二氧化硅具有很好的导电性,可用于制取光导纤维C.盛有甲醇的试剂瓶上,应贴上警示标签D.钙、钡、铁、铂等金属有绚丽的颜色,可用于制造焰火8.设N A为阿伏加罗常数的值,下列说法正确的是A.17g羟基和17gOH—含有的电子数均为10N AB.2L0.5 mol•L-1醋酸溶液中含有的H+数为NAC.标准状况下,N A个NO分子和0。
5N A个O2分子充分反应后气体体积为22.4LD.7。
8gNa2O2与足量的CO2和H2O(g)混合气体充分反应,转移的电子数为0。
1N A9.碳酸亚乙酯是一种重要的添加剂,其结构如图(),碳酸亚乙酯可由两种分子发生酯化反应制取,这两种分子的原子个数比为A.3:5 B.1:2 C.2:3 D.2:510.下列实验中,对应的现象、结论均正确的一组是11.锌溴液流电池用溴化锌溶液作电解液,并在电池间不断循环。
下列有关说法正确的是A.充电时Zn2+通过阳离子交换膜由左侧流向右侧B.放电时每转移2mol电子负极增重130gC.充电时阴极的电极反应式为Br2+2e—=2Br-D.若将电解液改为氯化锌溶液放电效果更好更安全12.W、X、Y、Z均为短周期主族元素,原子序数依次增加,X、Y 同周期,W、Z同主族,且X、Y最外层电子数之和是W、Z 最外层电子数之和的6倍。
下列说法正确的是A.简单离子半径:Y<Z B.氢化物的稳定性:X>Y C.原子失电子能力:W<Z D.X与Y形成的简单化合物为离子化合物13.用0。
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2016年安庆市高三模拟考试(二模)数学(理科)试题命题:安庆市高考命题研究课题组本试卷分第1卷(选择题)和第2卷(非选择题)两部分。
全卷满分150分,考试时间120分钟。
第1卷(选择题 共60分)一、选择题:本大题共12小题,每小题5分,满分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、若集合{},,3|||Z x x x P ∈<=且{},,0)3(|N x x x x Q ∈≤-=且则Q P ⋂等于( ) A 、{}210,, B 、{}321,, C 、{}21, D 、{}3210,,,2、设i 是虚数单位,如果复数iia -+2的实部与虚部相等,那么实数a 的值为( ) A 、31 B 、31- C 、3 D 、3- 3、设角A 、B 、C 是ABC ∆的三个内角,则”“C B A <+是“A B C ∆为钝角三角形”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、在如图所示的算法框图中,e 是自然对数的底数,则输出的i 的值为( ) (参考数值:609.72016ln ≈)A 、6B 、7C 、8D 、95.数列{}n a 满足:)0,(11≠∈*∈-=+λλλ且R N n a a n n ,若数列{}1-n a 是等比数列,则λ的值等于( )A 、1B 、-1C 、21D 、26.已知函数)2||,0,0)(sin()(πφωφω<>>+=A x A x f 部分图像如图所示,则)(x f 的递增区间为( )A 、Z k k k ∈++-),2125,212(ππππB 、Z k k k ∈++-),125,12(ππππC 、Z k k k ∈++-),265,26(ππππ D 、Z k k k ∈++-),65,6(ππππ7、给出定义:设)(x f '是函数)(x f y =的导函数,)(x f ''是)(x f '的导函数,若方程0)(=''x f 有实数解0x ,则称点))(,(00x f x 为函数)(x f y =的“拐点”。
已知函数x x x x f cos sin 43)(-+=的拐点是))(,(00x f x M ,则点M ( )A 、在直线x y 3-=上B 、在直线x y 3=上C 、x y 4-=上D 、x y 4=上8、已知向量→→→AD AC AB 、、满足→→→+=AD AB AC ,1||,2||==-→→AD AB ,E 、F 分别是线段BC 、CD 的中点。
若45-=⋅→→BF DE ,则向量→AB 与向量→AD 的夹角为( )A 、3πB 、32πC 、6πD 、65π9、如果点),(y x P 在平面区域⎪⎩⎪⎨⎧≤-+≤+-≥+-02012022y x y x y x 上,则22)1(++y x 的最大值和最小值分别是( ) A 、53,3, B 、59,9, C 、2,9 D 、23,10、设点A 、F (c,0)分别是双曲线)0,0(12222>>=-b a b y a x 的右顶点和右焦点,直线ca x 2=交双曲线的一条渐近线于点P 。
若PA F ∆是等腰三角形,则此双曲线的离心率为( )A 、3B 、3C 、2D 、211、一个几何体的三视图如图所示,其体积为( ) A 、611 B 、3611 C 、23 D 、2112、设函数001()1111x x x f x x <<<⎧⎪=⎨--⎪+⎩≤, ,.,4)()(m mx x f x g --=其中0≠m 。
若函数)(x g 在区间)1,1(-上有且仅有一个零点,则实数m 的取值范围是( )A 、41≥m 或1-=mB 、41≥mC 、51≥m 或1-=mD 、51≥m第二卷(非选择题,共90分)本卷包括必考题和选考题两部分,第13题-第21题为必考题,每个试题考生都必须作答,第22题-第24题为选考题,考生根据要求作答。
二、填空题:本大题共4小题,每小题5分,满分20分。
13、若抛物线x y 62=的准线被圆心为)1,2(-的圆截得的弦长等于3,则该圆的半径为_______. 14、将3)44(-+xx 展开后,常数项是_______。
15、在平行四边形ABCD 中,,BD AB ⊥12422=⋅+⋅BD AB ,将此平行四边形沿BD 折成直二面角,则三菱锥BCD A -外接球的表面积为________.16、已知数列{}n a 是各项均不为零的等差数列,n S 为其n 项和,且).(12*∈=-N n S a n n 若不等式nn a n8+≤λ对任意*∈N n 恒成立,则实数λ的最大值为_______.三、解答题:本大题满分70分。
解答应写出文字说明、证明过程或演算步骤。
17、(本小题满分12分)如图,D 是直角ABC ∆斜边BC 上一点,DC AC 3=. (1)若︒=∠30DAC ,求角B 的大小;(2)若DC BD 2=,且,22=AD 求DC 的长。
18、(本小题满分12分)如图所示的多面体ABCDEFG 中,面ABCD 是边长为2的菱形,,120ABCD CF BG CF DE BAD 面,∥∥,⊥︒=∠,∥EF AG 且.42==BG CF (1)证明:ABCD EG 平面∥;(2)求直线CF 与平面AEG 所成角的正弦值。
19.(本小题满分12分)近年来,全国很多地区出现了非常严重的雾霾天气,而燃放烟花爆竹会加重雾霾。
是否应该全面禁放烟花爆竹已成为人们议论的一个话题。
一般来说,老年人(年满60周岁)从情感上不太支持禁放烟花爆竹,而中青年人(18周岁至60周岁以下)则相对理性一些。
某市环保部门就是否赞成禁放烟花爆竹对400为老年和中青年市民进行了随机问卷调查,结果如下表:(1)有多大把握认为“是否赞成禁放烟花爆竹”与“年龄结构”有关?请说明理由; (2)从上述不赞成禁放烟花爆竹的市民中按年龄结构分层抽样出13人,再从这13人中随机的挑选2人,了解他们春节期间在烟花爆竹上消费的情况。
假设老年人花费500元左右,中青年人花费1000元左右。
用X 表示他们在烟花爆竹上消费的总费用,求X 的分布列和数学期望。
附:))()()(()(22d b c a d c b a bc ad n K ++++-=,20、(本小题满分12分)已知定圆,16)3(22=++y x A :动圆M 过点)0,3(B ,且和圆A 相切。
(1)求动圆圆心M 的轨迹E 的方程;(2)设不垂直与x 轴的直线l 与轨迹E 交于不同的两点P 、Q ,点).0,4(N 若P 、Q 、N 三点不共线,且ONQ ONP ∠=∠。
证明:动直线PQ 经过定点。
21、(本小题满分12分)设函数2)1()(-=x x f ,2)(ln )(x a x g =,其中R a ∈,且0≠a 。
(1)若直线e x =(e 为自然对数的底数)与曲线)(x f y =和)(x g y =分别交于A 、B 两点,且曲线)(x f y =在点A 处的切线与曲线)(x g y =在点B 处的切线相互平行,求a 的值; (2)设)0,(ln )()(≠∈+=m R m x m x f x h 且有两个极值点21,x x ,且21x x <。
证明:42ln 21)(2->x h 。
请考生在第22、23、24题中任选一题作答,如果多做,则按所做的第一题记分。
作答时请写清题号22、(本小题满分10分)选修4—1 几何证明选讲如图,以ABC ∆的边AB 为直径作O Θ,O Θ与边BC 的交点D 恰为BC 边的中点,过点D 作AC DE ⊥于点E 。
(1)求证:DE 是O Θ的切线; (2)若︒=∠30B ,求DCAE的值。
23、(本小题满分10分)选修4-4 坐标系与参数方程在平面直角坐标系中,以原点为极点,x 轴正半轴为极轴建立极坐标系,并在两坐标系中取相同的长度单位。
已知曲线C 的极坐标方程为,cos 2θρ=直线l 的参数方程为⎩⎨⎧=+-=ααsin cos 1t y t x (t 为参数,α为直线的倾斜角) (1)写出直线l 的普通方程和曲线C 的直角坐标方程; (2)若直线l 与曲线C 有唯一的公共点,求角α的大小。
24、(本小题满分10分)选修4-5 不等式选讲 设函数|,||3|)(a x x x f +--=其中R a ∈ (1)当2=a 时,解不等式;1)(<x f(2)若对于任意实数x ,恒有a x f 2)(≤成立,求a 的取值范围。
2016年安庆市高三模拟考试(二模) 数学试题(理科)参考答案及评分标准一、选择题1. 解析:{}21012P =--,,,,,{}012,3Q =,,, P Q ={}012,,.2.解析:i 21(2)i2i 5a a a +-++=-,212a a -=+,3a =. 3. 解析: 若C B A <+,则.2π>C 但反之不然. 4. 解析: ∵609.72016ln ≈,∴8e 2016>∴8i =时,符合2016a ≥,∴输出的结果8i =.5. 解析:由11n n a a λ+=-,得1212()n n n a a a λλλ+-=-=-.由于数列{1}n a -是等比数列,所以21λ=,得2λ=.6. 解析: 由图象可知2A =,311341264T πππ=-=,所以T π=,故2ω=. 由11()212f π=-,得23k πϕπ=-(Z k ∈). ∵2πϕ=∴3πϕ-= 所以()2sin(2)3f x x π=-. 由2(22)322x k k πππππ-∈-+,(Z k ∈),得5()1212x k k ππππ∈-+,(Z k ∈).或:311341264T πππ=-=,所以T π=,646412T ππππ-=-=-, 5646412T ππππ+=+=,所以()f x 的单增区间是5()1212k k ππππ-+,(Z k ∈).7.解析:()34cos sin f x x x '=++,()4sin cos 0f x x x ''=-+=,004sin cos 0x x -=,所以003)(x x f =,故00(())M x f x ,在直线x y 3=上.8. 解析:DE BF ⋅= 22115115()()224224CB CD CD CB CB CD CD CB --=⋅--=- .由2CD AB == ,1BC AD ==,可得1cos 2CB CD 〈〉= ,, 所以3CB CD π〈〉= ,,从而3AB AD π〈〉= ,. 9. 解析:如图,先作出点()P x y ,所在的平面区域.22)1(++y x 表示动点P 到定点(01)Q -,距离的平方. 当点P 在(10)-,时, 22PQ =,而点Q 到直线012=+-y x的距离的平方为925<;当点P 在(02), 时,离Q 最远,92=PQ .因此22)1(++y x 的最大值为9,最小值为95. 10. 解析:显然PF PA >,PF AF >,所以由PAF ∆是等腰三角形得PA AF =.易知A (0)a ,,P 2()a ab c c ,,所以2222()()()a aba c a c c -+=-, 222222()()()()()a a a c c a c a c c ⇒-+-=-22()()1a a c ac c c a +⇒+=-2211111e e e e +⇒+=-. 解得 2e =. 11. 解析: 该几何体是一个直三棱柱截去一个小三棱锥,如图所示,则其体积为:611111213121221=⨯⨯⨯⨯-⨯⨯⨯=V .12. 解析:001()1111x x x f x x <<<⎧⎪=⎨--⎪+⎩≤, ,.作函数()y f x =的图象,如图所示.函数()g x 零点的个数⇔函数()y f x =的图象与直线4y mx m =+交点的个数.当直线4y mx m =+过点(11),时,15m =;当直 线4y mx m =+与曲线111y x =-+(01x <<-) 相切时,可求得1m =-. 根据图象可知当15m ≥或1m =-时,函数()g x 在区间(11),-上有且仅有一个零点. 二、填空题13.解析:抛物线26y x =的准线2x =-,圆心(21),-到其距离等于(2)22---=. 1=. 14.解析:展开后的通项是nm n mnm mxx C C ----⋅⋅333)4()4(,当n m =时为常数.于是m m mm mm nm n mnm mxx C C xx C C 2333333)4()4()4()4(------⋅⋅=-⋅⋅. 若0m =,则3(4)64-=-;若1m =,则11324(4)96C C ⋅⋅-=-.故常数项是.1609664-=-- 或:63)2()44(xx x x -=-+展开后的通项是k kk k k k x C xx C 26666)()2()2()(---=-⋅. 令620k -=,得3k =. 所以常数项是336(2)160C -=-.15.解析:如图,因为平面BDC ⊥平面ABD (折成直二面角),所以AB ⊥平面BDC ,CD ⊥平面ABD ,得.AD CD BC AB ⊥⊥,取AC 的中点O ,则OD OC OB OA ===.于是外接球的球心是O ,12OA AC =,2214OA AC =. 而.21)24(2122222222=+=+=+=BD AB BD AB BC AB AC 所以半径.4221==AC OA 于是外接球的表面积为242S OA ππ=⋅=. 16.解析:n n a a =⇒==, 2(21)n n a n a ⇒=-21n a n ⇒=-,*∈N n .8n n a nλ+≤就是(8)(21)8215n n n n n λλ+-⇒-+≤≤. 8215n n-+在1n ≥时单调递增,其最小为9,所以9λ≤, 故实数λ的最大值为9.三、解答题17.解析:(Ⅰ)在△ABC 中,根据正弦定理,有sin sin AC DC ADC DAC=∠∠.因为AC =,所以sin ADC DAC ∠=∠=. 又 6060>+∠=∠+∠=∠B BAD B ADC 所以120ADC ∠=°. ……………3分于是3030120180=--=∠C ,所以60B ∠=°. ……………6分 (Ⅱ)设DC x =,则2BD x =,3BC x =,AC =.于是sin AC B BC ==,cos B =,.6x AB =……………9分 在ABD ∆中,由余弦定理,得 2222cos AD AB BD AB BD B =+-⋅,即222264222x x x x =+-⨯= ,得2x =. 故.2=DC ……………12分18.解析:(Ⅰ)证明:G//G A EF A ⇒与EF 共面.由平面//ADE 平面//BCFG AE FG ⇒⇒四边形AEFG 为平行四边形.连接AF 交EG 于M ,连接AC ,BD 交于O ,连接MO ,如图1所示.则//MO CF ,且12MO CF BG ==, 故BOMG 为平行四边形,所以//MG BO .又BO ⊂平面ABCD ,MG ⊄平面ABCD ,所以//MG 平面ABCD ,即//EG 平面ABCD . ……………6分(Ⅱ)解法一、CF ABCD CF DBABCD BD AC CF AC ABCD CF AC O ⊥⇒⊥⎫⎪⇒⊥⎬⎪⊂=⎭ 平面四边形是菱形面且、BD ACF ⇒⊥平面.由(Ⅰ)知//EG BD ,所以EG ACF ⊥平面AEFG ACF ⇒⊥平面平面. 因为平面AEFG 平面=ACF AF ,C ∈平面ACF ,所以点C 在平面AEFG 内的射影落在AF 上,故FC 与平面AEFG 所成的角就是AFC ∠.在Rt AFC ∆中,55422sin 22=+==∠AF AC AFC , 所以FC 与平面AEG 所成角的正弦为55. ……………12分 ACF =C解法二、由(Ⅰ)易知,.2==BG DE 以O 为坐标原点,分别以直线AC 、BD 为x 、y轴,建立空间直角坐标系xyz O -,如图2所示.则有(100)A ,,、(02)E ,,(02)G ,(100)C -,,,(104)F -,,,所以(12)AE =- ,,(00)EG = ,,(004)CF = ,,.设面AEG 的法向量为()n x y z = ,,,由n AE ⊥ , n EG ⊥,得200.x z ⎧-+=⎪⎨=⎪⎩, 令1=z ,则2=x 所以(201)n = ,,,于是cos n CF <>== , ………10分 故直线CF 与平面AEG 所成角的正弦值为.55 ………12分 19. 解析:(Ⅰ)因为22400(6012014080)400 4.3956 3.84114026020020091K ⨯⨯-⨯==≈>⨯⨯⨯, 所以有95%把握认为“是否赞成禁放烟花爆竹”与“年龄结构”有关.……… 5分(Ⅱ)因为140:1207:6=,所以13人中有老年人7人,中青年人6人.那么2000X =,1500,1000. ……… 7分26213C 5(2000)C 26P X ===,1176213C C 7(1500)C 13P X ===,27213C 7(1000)C 26P X ===, 所以X 的分布列为所以200015001000146226132613EX =⨯+⨯+⨯=≈. ……… 12分20. 解析:(Ⅰ)圆A 的圆心为(0)A ,半径14r =.设动圆M 的半径为2r ,依题意有2||r MB =. 由||AB =B 在圆A 内,从而圆M 内切于圆A ,故12||MA r r =-, 即||||4MA MB +=32>.所以动点M 的轨迹E 是以A 、B 为焦点,长轴长为4的椭圆, 其方程为1422=+y x . …………5分 (Ⅱ) 设直线l 的方程为(0)y kx b k =+≠,联立2244y kx b x y =+⎧⎨+=⎩,,消去y 得, 222(14)8440k x kbx b +++-=, 2216(41)k b ∆=-+. 设11()P x kx b +,,11()Q x kx b +,,则122814kb x x k +=-+,21224414b x x k -=+. …………7分 于是=+Q N PN k k 12121212112(4)()844(4)(4)kx b kx b kx x k b x x b x x x x ++--+-+=----, 由ONP ONQ ∠=∠知0=+Q N PN k k .即 21212224482(4)()82(4)81414b kb kx x k b x x b k k b b k k----+-=---++ 3222288328801414k k k b kb b k k--=+-=++,得b k =-,216(31)0k ∆=+>. 故动直线l 的方程为y kx k =-,过定点(10),. …………12分 21. 解析:(Ⅰ)因为()2(1)f x x '=-,2ln ()a x g x x'=, ……… 2分所以()2(1)f e e '=-,2ln 2()a e a g e e e'==. 由()()f e g e ''=,得2a e e =-. ……… 5分 (Ⅱ)222()2(1)m x x m h x x x x-+'=-+=,0x >. 因为()h x 有两个极值点1x ,2x ,所以1x ,2x 是方程2220x x m -+=的两个实数根, .121=+x x 而120x x <<,所以1212<<x . 因为22222m x x =-+,所以2222222()(1)(22)ln h x x x x x =-+-. ……… 8分令()t ϕ=22(1)(22)ln t t t t -+-,121<<t . 则21()2(1)(24)ln (22)2(12)ln 0t t t t t t t t tϕ'=-+-+-⋅=->, 所以()t ϕ在1(1)2,内是增函数. 于是112ln 2()()24t ϕϕ->=, 即212ln 2()4h x ->. ……… 12分 22.解析:(Ⅰ)如图,连接OD .因为O 是AB 的中点,D 是BC 的中点,所以 OD //AC .因为AC DE ⊥,所以OD DE ⊥,所以DE 是⊙O 的切线. ………… 5分(Ⅱ)因为AB 是⊙O 的直径,点D 在⊙O 上,所以BC AD ⊥.又D 是BC 的中点,所以 AB AC =. 故 30=∠=∠B ACD .因为AC DE ⊥,所以 30=∠ADE . 在直角三角形AED 中, 30tan =DEAE ; 在直角三角形DEC 中, 30sin =DCDE . 于是633321=⨯=DE AE . ………… 10分 23.解析:(Ⅰ)当2π=a 时,直线l 的普通方程为1x =-; 当2π≠a 时,直线l 的普通方程为(tan )(1)y x a =+. ………… 2分 由θρcos 2=,得θρρcos 22=,所以222x y x +=,即为曲线C 的直角坐标方程. ………… 4分 (Ⅱ)把a t x cos 1+-=,sin y t a =代入222x y x +=,整理得24cos 30t t a -+=.由012cos 162=-=∆α,得23cos 4=a ,所以cos =a 或cos =a - 故直线l 倾斜角α为6π或56π. ………… 10分 24.解析:(Ⅰ)2=a 时,1)(<x f 就是.123<+--x x当2-<x 时,321x x -++<,得51<,不成立;当23x -<≤时,321x x ---<,得0x >,所以30<<x ;当3x ≥时,321x x ---<,即51-<,恒成立,所以3x ≥.综上可知,不等式1)(<x f 的解集是(0)+∞,.…………5分 (Ⅱ)因为()3(3)()3f x x x a x x a a =--+--+=+≤,所以)(x f 的最大值为3+a .对于任意实数x ,恒有()2f x a ≤成立等价于32a a +≤.当3a -≥时,32a a +≤,得3a ≥;当3a <-时,32a a --≤,1a -≥,不成立.综上,所求a 的取值范围是[3)+∞,………… 10分。