贵州省遵义四中2010届高三第一次月考-----文科数学
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贵州省遵义四中高三第一次月考数 学 试 题(文科)本试卷分为第I 卷和第II 卷两部分,共150分。
考试时间1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。
1.一个总体中共有10个个体,用简单随机抽样的方法,从中抽取一个容量为4的样本,则某个特定个体入样的概率是( )A .110B .15C .25D .44410C C2.若集合2{3,},{2,4},"2""{4}"A a B a AB ====则是的( )A .必要不充分条件B .充分不必要条件C .充要条件D .既不充分也不必要条件 3.曲线324y x x =-+在点(1,3)处的切线的倾斜角为( ) A .300 B .450 C .600 D .1 4.已知集合21{|1},{|log 0},R A x B x x A C B x=≤=<=集合则( ) A .{|01}x x x ≤≥或 B .{|01}x x ≤≤ C .{|01}x x << D .{|01}x x x <≥或5.若函数2y x bx c =++的图象顶点在第四象限,则其导函数()f x '的图象可能是( )A B C D 6.设{||2|3},{|},,A x x B x x t AB φ=-≤=<=若则实数t 的取值范围是( )A .5t ≥B .1t <-C .5t >D . 1t ≤-xxCP7.为了调查某厂工人生产某种产品的能力,随机抽查了人某天生产该产品的数量,产品数量的分组区间为[45,55),[55,65),[65,75),[75,85),[85,95),由此得到频率分布在方图如图所示,则这人中一天生产该产品数量在[55,75)的人数是( )A .8B .5C .13D .158.函数32()39f x x ax x =++-,已知()3f x x =-在时取得极值,则a =( ) A .2 B .3 C .4 D .5 9.曲线314(1,)33y x x =+在点处的切线与坐标轴围成的三角形面积为( ) A .19 B .29 C .13 D .2310.若当x>0时,不等式210x ax ++≥恒成立,则a 的最小值为( ) A .-3 B .-2 C .-1 D .-3211、正四棱锥P -ABCD 的所有棱长相等,E 为PC 那么异面直线BE 与PA 所成角的余弦值等于A . 12B. 2C. 3D. 312、把边长为 a 的正△ABC 沿高线 AD 折成60︒ 的二面角,这时 A 到边 BC 的距离是( ) A.154a B.63a C.134a D.32a 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,共把答案填在题中横线上。
遵义四中20xx —20xx 学年度高三第四次月考数学试题(文)参考答案一、选择题(每小题5分,共60分)1~5DCCDA 6~10A BAAC 11~12DA二、填空题(每小题5分,共20分)13.23; 14.1; 15.6-; 16.3π2. 三、解答题:本大题共6小题,共70分,解答应写出文字说明、证明过程或演算步骤. 17.(满分12分)解:(Ⅰ)由题意,131n n a S +=+,则当2n ≥时,131n n a S -=+.两式相减,得14n n a a +=(2n ≥). ………………2分又因为11a =,24a =,214a a =,……………………4分 所以数列{}n a 是以首项为1,公比为4的等比数列,……………………5分所以数列{}n a 的通项公式是14n n a -=(n *∈N ). …………6分(Ⅱ)因为123(1)(2)(3)()n n T a a a n a =++++++++,21(12)(1444)n n -=++++++++(1)1(14)214n n n +-=+- 24123n n n +-=+ ………………………………12分 18.(满分12分)解:(1)当X =8时,由茎叶图可知,乙组同学的植树棵数是:8,8,9,10, 所以平均数为;435410988=+++=x ……………………………………3分方差为.1611])43510()4359()4358[(412222=-+-+-=s …………6分 (Ⅱ)记甲组四名同学为A 1,A 2,A 3,A 4,他们植树的棵数依次为9,9,11,11;乙组四名同学为B 1,B 2,B 3,B 4,他们植树的棵数依次为9,8,9,10,分别从甲、乙两组中随机选取一名同学,所有可能的结果有16个,它们是:(A 1,B 1),(A 1,B 2),(A 1,B 3),(A 1,B 4),(A 2,B 1),(A 2,B 2),(A 2,B 3),(A 2,B 4),(A 3,B 1),(A 2,B 2),(A 3,B 3),(A 1,B 4),(A 4,B 1),(A 4,B 2),(A 4,B 3),(A 4,B 4),用C 表示:“选出的两名同学的植树总棵数为19”这一事件,则C 中的结果有4个,它们是:(A 1,B 4),(A 2,B 4),(A 3,B 2),(A 4,B 2),故所求概率为.41164)(==C P ……12分 19.(满分12分)解:(1)证明:连1AB 交B A 1于点E ,连DE .则E 是1AB 的中点,∵D 是AC 的中点,∴C B DE 1//∵⊂DE 平面BD A 1,⊄C B 1平面BD A 1,∴C B 1∥平面BD A 1.………6分(2)法一:设12AA a =,∵AB AA =1,∴1BA AE ⊥,且a AE 2=, 作D A AF 1⊥,连EF∵平面BD A 1⊥平面11A ACC ,∴⊥AF 平面BD A 1,∴1BA EF ⊥∴AEF ∠就是二面角D B A A --1的平面角,在AD A1∆中,AF =,在AEF ∆中,EF ===515256cos ===∠aa AE EF AEF , 即二面角D B A A --1的余弦值是515.…………12分 解法二:如图,建立空间直角坐标系. 则)0,0,0(D,,0)B ,(,0,0)A a -,1(,0,2)A a a -.∴1(0,0,2)AA a =,(,0)AB a =,1(,0,2)DA a a =-,,0)DB =设平面BD A 1的法向量是),,(z y x =, 则由⎪⎩⎪⎨⎧==⋅=+-=⋅03021y z x ,取)1,0,2(=设平面B AA 1的法向量是),,(z y x =,则 由⎪⎩⎪⎨⎧==⋅=+=⋅02031z y x ,取)0,1,3(-=记二面角D B A A --1的大小是θ,则23cos ||||25m n m n θ⋅=== 即二面角D B A A --1的余弦值是515.…………………………12分20.(满分12分) 解: (1)由已知4b =,且c a =,即2215c a =, ∴22215a b a -=,解得220a =,∴椭圆的方程标准为2212016y x +=; ……5分(2)椭圆右焦点F 的坐标为(2,0),设线段MN 的中点为Q 00(,)x y ,由三角形重心的性质知2BF FQ =,又(0,4)B ,∴00(2,4)2(2,)x y -=-,故得003,2x y ==-,求得Q 的坐标为(3,2)-; ……………8分设1122(,),(,)M x y N x y ,则12126,4x x y y +=+=-, 且222211221,120162016x y x y +=+=, …………………10分 以上两式相减得12121212()()()()02016x x x x y y y y +-+-+=, 1212121244665545MN y y x x k x x y y -+==-⨯=-⨯=-+-∴, 故直线MN 的方程为62(3)5y x +=-,即65280x y --=.………12分21.(满分12分)(1)函数()f x 的定义域为()1,+∞,………………………………………………1分 ∵()()221()2111x x f x x x x -⎡⎤'=--=-⎢⎥--⎣⎦,……………2分 ∵1x >,则使()0f x '>的x 的取值范围为()1,2,故函数()f x 的单调递增区间为()1,2.…………………………4分(2)方法1:∵()()2()2ln 11f x x x =---,∴()2()3012ln 10f x x x a x a x +--=⇔++--=.……………6分 令()()12ln 1g x x a x =++--,∵23()111x g x x x -'=-=--,且1x >, 由()03()03g x x g x x ''>><<<得,得1.∴()g x 在区间[2,3]内单调递减,在区间[3,4]内单调递增,………………8分 故2()30f x x x a +--=在区间[]2,4内恰有两个相异实根 (2)0,(3)0,(4)0.g g g ≥⎧⎪⇔<⎨⎪≥⎩……10分即30,42ln 20,52ln 30.a a a +≥⎧⎪+-<⎨⎪+-≥⎩解得:2ln352ln 24a -≤<-.综上所述,a 的取值范围是[)2ln35,2ln 24--. ……………12分 方法2:∵()()2()2ln 11f x x x =---,∴()2()3012ln 10f x x x a x a x +--=⇔++--=.…………6分 即()2ln 11a x x =---,令()()2ln 11h x x x =---,∵23()111x h x x x -'=-=--,且1x >, 由()03,()03h x x h x x ''><<<>得1得.∴()h x 在区间[2,3]内单调递增,在区间[3,4]内单调递减.………8分 ∵()23h =-,()32ln 24h =-,()42ln35h =-,又()()24h h <,故2()30f x x x a +--=在区间[]2,4内恰有两个相异实根 ()()43h a h ⇔≤<. ……………………………………10分即2ln352ln 24a -≤<-.综上所述,a 的取值范围是[)2ln35,2ln 24--. ……………12分22.(满分10分)《选修4—1:几何证明选讲》解:(I )1,2,2==⋅=PC PA PD PC PA ,4=∴PD ,…(2分)又2,1=∴==CE ED PC ,,,CAB PCA CBA PAC ∠=∠∠=∠CBA PAC ∆∆∴∽,ABAC AC PC =∴,…………(4分) 22=⋅=∴AB PC AC ,2=∴AC ……(5分) (II ) 2==AC BE ,2=CE ,而EF BE ED CE ⋅=⋅, …………(8分)2212=⋅=∴EF ,BE EF =∴. …………(10分) 23.(满分10分)《选修4-4:坐标系与参数方程》解:(Ⅰ)曲线C 的普通方程为01=--y x ,曲线P 的直角坐标方程为03422=+-+x y x .……5分(Ⅱ)曲线P 可化为1)2(22=+-y x ,表示圆心在)0,2(,半径=r 1的圆,则圆心到直线C 的距离为2221==d , 所以2222=-=d r AB .……10分24.(满分10分)《选修4-5:不等式选讲》解:(Ⅰ)()⎪⎩⎪⎨⎧≥<<-≤-=---=5,3,52,722,352x x x x x x x f当52<<x 时,3723<-<-x .所以()33≤≤-x f .…………5分(Ⅱ)由(Ⅰ)可知,当2≤x 时,()1582+-≥x x x f 的解集为空集;当52<<x 时,()1582+-≥x x x f 的解集为{}535≤≤-x x ; 当5≥x 时,()1582+-≥x x x f 的解集为{}65≤≤x x 综上,不等式()1582+-≥x x x f 的解集为{}635≤≤-x x ……10分。
数词与主谓一致2010届联考题(9--12月)题组一1.(山东省兖州市2010届高三英语模块检测)It’s said that the team twelve top European players.A.consists of B.is consisted ofC.are made up of D.make up of答案 A2.(山东省兖州市2010届高三英语模块检测)After the new technique was introduced,the factory produced in 2001 as the year before.A.as twice many machines B.twice many as machinesC.as many machines twice D.twice as many machines答案 D3.(湖南省株洲市二中2010届高三上学期第二次月考)Sixty miles _______ in a single night, so they were exhausted.A. is coveredB. was coveredC. are coveredD. has covered 答案 B4.(辽宁省沈阳二十中2010届高三上学期第一次月考)________ an English-Chinese dictionary.A. The students each haveB. The students each hasC. Each the students hasD. Each of the students have答案 A5.(湖南省湘潭市凤凰中学2009届高三第六次月考)I remember Alice, my little niece, often asked questions that children ________ would ask.A. twice so old as sheB. twice as old as her ageC. older twice than her ageD. twice of her age答案 D9.(安徽省两地2010届高三第一次联考)Much to his surprise,he invited only twenty friends to the dinner,but came.A.twice as many as B.as many as twiceC.twice as many D.twice more than答案 C10.(贵州省遵义四中2010届第一次月考)____ of the Russian students, teachers and parents was over 1,000; and ____ of them were killed unfortunately.A. The number; the numberB. The number; a numberC. A number; halfD. A number; three quarters答案 B11.(山西省平遥中学2009年9月高三高补摸底考试)---What does the model plane look like?---Well, the wings of the plane are ____ of its body.A. more than the length twiceB. twice more than the lengthC. more than twice the lengthD. more twice than the length答案 C12.(湖南省浏阳一中2010届高三上学期第二次月考)--- Several department stores, including the one we usually go to, _____ sidewalk sales this week.--- Let’s go and have a look.A. is havingB. are havingC. hasD. have had答案 B13.(辽宁省本溪县2010届高三暑期补课阶段考试)--- It is said that the number of Chinese characters you can type on your mobile phone is____the total number of Chinese characters.--- I know. That is because the character input systems are made by foreign cell phone producers.A. much than 25 percentB. 25 percent as less asC. 25 percent less thanD. 25 percent as much答案 C14.(江苏省常州高级中学2010届高三上学期期初教学质量调研)What the science teacher does and says ____ of great importance to college students.A. wasB. areC. isD. were答案 C15.(江苏省启东中学2010届高三年段过关考试)I thought things would get better, but ______ they are getting worse.A. as it wereB. as it wasC. as it isD. as is it答案 C16.(江苏省扬州中学2010届高三第一次月考)Britain ______ many other industrialized countries, _______ major changes over the last 100 years.A. together with; have experiencedB. as well as; have experiencedC. in common with; has experiencedD. instead of; has experienced答案 C17.(安徽省濉溪县2009届高三上学期第三次月考)My family ____ all fond of singing English songs and we can sing _____ than others.A. is, many moreB. are, many moreC. is, much moreD. are, much more答案 B18.(安徽省濉溪县2009届高三上学期第一次月考)On the contrary, I think it is John, _________ you, _________ to blame.A. more than; areB. less than; who areC. rather than; isD. rather than; that is答案 D19.(福建省福州市屏东中学2010届高三9月阶段性考试)Americans eat ________ vegetables per person today as they did in 1910.A. more than twiceB. as twice as manyC. twice as many asD. more than twice as many答案 D20.(浙江省长兴三中2010届高三第一次月考)A number of students________ playing on the ground but I don’t know what the e xact number______.A are; isB are; areC is; isD is; are答案 A21.(吉林省实验中学2010届高三第一次模拟)We all feel it is Jack as well as his wife that ____ for their son’s bad behaviour at school.A. are to blameB. is to be blamedC. are to be blamedD. is to blame答案 D22.(江西省高安二中2009届高三第四次月考)— Mike, what did our monitor say just now?— Every boy and every girl as well as teachers who ______ to visit the museum _____ asked to be at the school gate before 6:30 in the morning.A. is; isB. are; areC. is; areD. are; is答案 D23.(山西省金谷中学2010届高三第一次练兵考试)At a rough estimate(估计), Nigeria is ____ Great Britain.A. three times the size asB. the size three times ofC. three times the size ofD. three times as the size of答案 C24.(浙江省海盐县元济高级中学2010届高三第一次月考)I would have paid ______for the dress if the sales girl had insisted, because I really wanted it.A. as much twiceB. twice as muchC. twice more thatD. more than twice答案 B25.(浙江省杭州高中2010届高三上学期第一次月考)To our surprise, we got ______ people to attend the meeting as we expected.A. as twiceB. twice manyC. twice many asD. twice as many答案 D题组二1.(安徽省涡阳二中2010届高三第二次月考)—Were all the toys for the children carried to their new kindergarten?—No, only some of them.A. it wasB. they wereC. there wereD. there was答案 A2.(甘肃省兰州一中2010届高三第一次月考)Our school will move to the north of the city, and the new school is the old one.A. twice the size ofB. twice times as big asC. twice the size asD. twice times bigger than答案 A3.(江西省重点中学南康中学2010届高三9月月考)We have in our class as we had last term.A. students as a third manyB. a third as many studentsC. a third students as manyD. students a third as many答案 B4.(吉林省东北师大附中2010届高三第一次摸底考试)—We’d like a double room, please.—I’m sorry, but all but two single rooms with sea view ________.A. have been reservedB. has been reservedC. were reservedD. has reserved答案 A5.(山东省沂南一中2010届高三上学期调研考试)Of the first Spanish to go to California, the majority ______ religious men, ______ ministry was to teach the Catholic religion to the natives.A. was; of which theB. were; of whomC. were; theirD. were; whose 答案 D6.(山西省运城市2010届高三调研测试)— Whom did you ________ the packet at the post office?— Jack. There________ masses of work for him to do, but he managed to finish the work as required.A. have fetched; wasB. have fetch; wereC. have to fetch; wereD. have fetch; was答案 B7.(河北省正定中学2010届高三第二次考试)The young elephants each ________ as ______ as 200 kilograms , and that old one is three times as _____A. weighs; much ; heavyB. is weighed; many ; muchC. are weighed ; many; muchD. weigh ; much ; heavy答案 D8.(广西柳州市第一中学2010届高三第一次模拟考试)一All but Johnson present at the meeting.一Perhaps he was ill then,A.was B.were C.has been D.have been答案 B9.(江西师大附中2010届高三10月月考)So far a series of problems ____ brought about by this decision.A. haveB. hasC. have beenD. has been答案 D10.(辽宁省抚顺一中2010届高三9月月考)I would have helped you, but I __ really occupied the whole week.A.B.am C.had been D.were答案 A11.(山西省太原五中2010届高三9月月考)The sheep farmer used their dog to the cattle that eating the grass here and there.A. drive up; wasB. pick up; wereC. round up; wasD. round up; were答案 D12.(浙江省温州中学2010届高三9月月考)He did it _________ it took me.A. one-third a timeB. one-third the timeC. the one-third timeD. one-third time答案 B13.(湖南省岳阳市一中2010届高三第二次月考)______ of the land in my hometown ______ covered with trees and grass.A. Two third; isB. Two third; areC. Two thirds; isD. Two thirds; are答案 C14.(宁夏省银川一中2010届高三第二次月考)My class teacher as well as other teachers_____ very kind to me.A .are B. is C. do D. does.答案 B15.(四川省绵阳南山中学2010届高三10月月考)What he says and what he does_________A. is not agreed.B. are not agreedC. doesn’t agreeD. don’t agree答案 D16.(云南省昆明一中2010届高三第二次月考)After World War II, Australia began to transform itself into the modern country _____ today.A. as it isB. as they areC. as it doesD. as they do答案 A17.(江西省九江市六校2010届高三上学期第一次联考)WHO, together with the medical workers in the different parts of the world ,_____ trying to find a way to prevent the disease H1N1 from ______.A. is; spreadingB. are; spreadingC. are ; spreadD. is ; spread答案 A18.(重庆市西南师大附中2010届高三9月月考)_________ my brothers are reporters. Covering events, meetings, or sports meetings_________ their duty.A. Each; areB. Both; isC. Neither; areD. None; is答案 B19.(重庆市西南师大附中2010届高三10月月考)Every day the boy, together with his classmates, _________ to go to the playground and_________ football, _________ themselves.A. are noticed; play; enjoyingB. is noticed; plays; enjoyingC. are noticed; plays; enjoysD. is noticed; play; enjoying答案 D20.(四川省绵阳中学2010届高三补习班第一次月考)Every possible means ______to prevent the air pollution, but the sky is still not clear.A. is usedB. are usedC. have been usedD. has been used答案 D21.(浙江省杭州高级中学2010届高三第二次月考)The new bridge is _____ the one built last year.A. three times as wider asB. three times the width ofC. three times the widthD. as three times as答案 B22.(重庆市南开中学2010届高三10月月考)—Joe, Look! I bought a new computer yesterday.—Oh, how small it is! Mine is almost .A. more than twice the size as yoursB. twice more bigC. more than twice as bigD. twice more than yours答案 C23.(福建省莆田九中2010届高三上学期第二次月考)________people in the world are sending information by e-mail every day.A. Tens of millions ofB. Tens of millionsC. Ten of millions ofD. Ten millions of答案 A24.(甘肃省会宁五中2010届高三10月月考)They have produced they did last year.A. twice more grain asB. twice as much grain asC. twice as many grain asD. as twice many grain as答案 B25.(河南省焦作十一中2010届高三第一次月考)When you study the local map, you’ll find this town is ______ .A. twice as a large town as thatB. twice the size of that oneC. twice as larger as that oneD. twice as larger a town as that答案 B题组三1.(甘肃省酒泉市肃州中学2010届高三入学考试)Janet as well as the other young people who ____ sent abroad by the government ____ brought up in a small town.A. was, wasB. was, wereC. were, wereD. were, was答案 D2.(贵州省高武中学2010届高三10月月考)He is going to give a lecture, but when and where _____ yet.A. hasn’t been decidedB. haven’t decidedC. isn’t being decidedD. aren’t decided答案 A3.(河北省邯郸市磁县2010届高三质量检测)Nobody but doctors and those ______ by Dr Zhang ______ to enter the patient’s room.A. invited; is allowedB. are invited; are allowedC. being invited; is allowedD. being invited; are allowed答案 A4.(江苏省如东高级中学2010届高三国庆假期自主练习)The Tower of London is ____ the Church tower.A. twice high thanB. two times as high asC. twice higher asD. three times the height of答案 D5.(山东省兰山高考补习学校2010届高三形成性检测)Ten years ago, the population of our town was ______ that of theirs.A. twice as large asB. as twice large asC. twice as much asD. as twice many as答案 A6.(河北省昌黎一中2010届高三第一次月考)In area it is the same size as the USA, which, however has ____________.A. more than fourteen times as many people asB. fourteen times people as many asC. fourteen times as many peopleD. as fourteen times as many people答案 C7.(湖南省长郡中学2010届高三第二次月考)The number of children who have lost both parents to Aids to rise, reaching more than 26 million in 2010.A. are expectedB. expectC. is expectedD. expects答案 C8.(河北省正定中学2010届高三上学期期中考试)of the city two small lakes.A. The east;lieB. The east;liesC. East;lieD. East;lies答案 C9.(天津市耀华中学2010届高三10月月考)All possible means ,but we can’t persuade him to change his mind.A.has tried B.has been triedC.have tried D.have been tried答案 D10.(山东省实验中学2010届高三上学期第一次诊断性测试)A certain number of tourists _________ complaining about the high accommodation price duringthe last month.A. isB. areC. has beenD. have been答案 D11.(辽宁省抚顺市2010届高三六校联合体第一次模拟考试)More than one ____ the people heart and soul.A. official has servedB. officials have servedC. official has served forD. officials have served for答案 A12.(湖南省师大附中2010届高三第三次月考)A series of stimulus policies and supportive measures taken by the government _____ to promote change in the economic environment in this area.A. is expectedB. are expectedC. is expectingD. are expecting答案 A13.(内蒙古包头33中2010届高三上学期期中考试)Matt is now getting on very well with his new job and he earns ___he did last year.A. twice as much asB. as twice much asC. twice as many asD. as twice many as答案 A14.(山西省晋中市太谷中学2009年高三第二次练兵考试)Strangely enough, the snow in Hunan was ______ that last year.A. as ten times thick asB. as thick as ten timesC. ten times as thick asD. ten times as答案 C15.(甘肃省兰州五十五中学2010届高三上学期期中考试)The new swimming pool is the old one.A.the two thirds size of B.two thirds as big asC.two thirds as much as D.as two thirds big as 答案 B16.(浙江省杭州学军中学2010届高三上学期期中考试)If you think there ______ huge quantities of oil for the use of drivers, you are wrong.A. isB. areC. hasD. have答案 B17.(河北省唐山市2010届高三上学期期中考试)Another five weeks _______ necessary for us to finish the work.A. areB. wasC. isD. will have been答案 C18.(黑龙江省哈四中2010届高三上学期期中考试)To our great surprise, we got _____ people to attend the conference as we expected.A. twice as manyB. twice manyC. twice many asD. as twice many答案 A19.(江西省吉水中学2010届高三上学期第三次月考)The newly broadened square is the previous one .A. four times as larger asB. larger four times thanC. four times the size ofD. as large as four times答案 C20.(陕西省西安第一中学2010届高三上学期期中考试)Since 1999, the number of foreign students at German universities _____ from 113,000 to almost 200,000.A. has increasedB. have increasedC.are increasedD.was increased答案 A21.(四川省钟祥中学2010届高三上学期期中考试)Americans eat vegetables per person today as they did 50 years ago.A. more than twiceB. more than twice as manyC. as twice as manyD. twice as many as答案 B22.(重庆市重庆一中2010届高三上学期期中考试)Grain eaten by country people is _____ the fruit and vegetables they eat.A. the twice weight ofB. twice the weight ofC. as twice heavy asD. twice as heavier as答案 B23.(河南省焦作十一中2010届高三上学期期中考试)The building they are building will be _______ the old one.A. four times the height ofB. four times as higher asC. higher four times thanD. as four times high as24.(湖南省岳阳市一中2010届高三第三次月考)Good amounts of sleep every night__________ also important for your health.A. isB. areC. wasD. were答案 B25.(上海市松江二中2010届高三上学期期中考试)The factory has produced it did last year.A. twice more cars asB. twice as many cars asC. twice as much cars asD. as twice many cars as答案 B题组四1.(云南省玉溪一中2010届高三上学期期中考试)Zhengzhou University has moved to a new site in the western suburbs, ________ its original one.A. almost as large as ten timesB. more than ten times the size asC. larger than ten timesD. more than ten times the size of答案 D2.(湖南省长郡中学2010届高三第三次月考)The village is far away from here indeed. It’s ______ walk.A. a four hourB. a four hour’sC. a four-hoursD. a four hours’答案 D3.(北京市朝阳区重点中学2010届高三上学期第二次月考)— Would you like Alice or Jane to do the task?—_______ is up to it. I’m sure they have the ability.A. NoneB. BothC. NeitherD. Either答案 D4.(重庆市西南师大附中2010届高三第四次月考)“It is not only you but also Tom who _________,” said the teacher after knowing what had happened.A. are to be blamedB. is to be blamedC. are to blameD. is to blame5.(江西省新建二中2010届高三12月月考)The lake is calm and clear, and one of the things that _____in the water is the famous tower.A. reflectsB. reflectC. is reflectedD. are reflected答案 D6.(重庆市万州二中2010届高三12月月考)This series of products ______ in special price for a month to promote its sales from next tenth.A. areB. is to beC. has beenD. would be答案 B7.(福建省漳州三中2010届高三上学期第四次月考)The teacher as well as the students planting trees.A. areB. isC. hasD. have答案 B8.(吉林省通化市一中2010届高三第三次月考)In this institution a medal,together with a prize of a certain sum of money, _______does best in science and technology every two years.A.is given to whoeverB.are given to anyoneC.are given to whoD.is given to whom答案 A9.(吉林省通化市一中2010届高三第四次月考)At present, one of the arguments for the new airport ______ that it will bring lots of jobs.A. isB. areC. will beD. was答案 A10.(四川省广安二中2010届高三(往)上学期期中考试)Dr.Smith, together with his wife and daughters , ____ visit Beijing this summer.A. is going toB. are going toC. was going to D . were going to答案 A11.(河南省洛阳市2010届高三上学期第一次统一考试)According to scientists, a man is ________ as likely to die of cancer as a woman.A. another twoB. two moreC. twice more thanD. more than twice12.(河南省社旗一高2010届高三上学期第三次月考)It’s said that _______ of the students _______ absent.A.three-fifth, areB. three-fifths, isC. third-fifth, isD. three-fifths, are答案 D13.(山东省莱芜育才中学2010届高三上学期期中考试)—I heard that many westerners prefer vegetables to meat.—It is true. Americans eat ________ vegetables each person today as they did 20 years ago. A. more than twice B. as twice as many C. twice as many D. that twice as many 答案 C14.(河南省方城五高2010届高三上学期期中考试)The house you have just purchased is mine.A.as three times big as B.three times the size ofC.three times big as D.as three times the size of答案 B15.(山东省胶州市2010届高三上学期期中考试)E-mail,as well as telephones,an important part。
9.2 提取公因式法(二)
一、学习目标:
1.熟练运用提取公因式法分解因式。
2.灵活运用提取公因式法进行计算、证明。
3.初步理解换元法数形结合,转化的数学数学思想。
二、知识回顾
一般地,n为偶数时,;n为奇数时
三、知识要点
对于公因式是多项式的情况,可考虑将这个多项式用一个字母来替换,然后进行因式分解,也可以将这个多项式整体看成一个进行因式分解。
四、典型例题
例1 把下列各式分解因式
(1) 把整体看做公因式
(2)
(3)
例2 分解因式
(分解因式要分解到每个因式不能再分解为止,相同因式要写成幂的形式)
(1) (2)
五、巩固练习
(一)填空题(在等号右边填上“+”号或“-”号使等式成立)
1. 2.
3. 4.
5. 6.
(二)判断下列因式分解是否正确,若不正确,请改正
1. ( )
改正:左式=____________________
2. ( )
改正:左式=____________________
3.
改正:左式=____________________
(三)课本 150页练习
六、小结
七、作业
课本150页习题9-1A
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遵义四中2012—2013学年度高三第四次月考数学试题(文)本试卷满分150分 考试时间120分钟一、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. 1.21i=- ( ) A .1i --B .1i -+C .1i -D .1i +2.如下图,矩形ABCD 中,点E 为边CD 上任意一点,若在矩形ABCD 内部随机取一个点Q ,则点Q 取自△ABE 内部的概率等于 ( )A .14 B .13 C .12D .233.20.34log 4,log 3,0.3a b c -===,则 ( ) A .a c b <<B .c b a <<C .a b c <<D .b a c <<4.过点()3,1P 且在x 轴上的截距和在y 轴上的截距相等的直线方程为 ( ) A .04=-+y xB .03=-y xC .04=-+y x 或03=+y xD .04=-+y x 或03=-y x5.某几何体的三视图如右图所示,则它的体积是 ( ) A .283π-B .83π- C .82π-D .23π 6.已知,a R ∈则2"2""2"a a a >>是成立的 ( ) 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7.已知向量(2,1)a =r ,(1,)b k =r,且a r 与b r 的夹角为锐角,则k 的取值范围是 ( )A .()2,-+∞B .11(2,)(,)22-+∞ C .(,2)-∞-D .(2,2)-8.已知函数()sin()f x A x ωϕ=+(其中π0,2A ϕ><)的部分图象如右图所示,为了得到x x g 2sin )(=的图象,则只需将()f x 的图象 ( )A .向右平移π6个长度单位 B .向右平移π12个长度单位 C .向左平移π6个长度单位D .向左平移π12个长度单位9.曲线33y x x =-上切点为(2,2)P -的切线方程是 ( )A .916y x =-+B .920y x =-C .2y =-D .916y x =-+或2y =-10.下列命题:①在ABC ∆中,若B A >,则B A sin sin >;②已知()4,3=,=()1,2--,则AB 在CD 上的投影为2-;③已知1c o s,:=∈∃x R x p ,01,:2>+-∈∀x x R x q ,则“q p ⌝∧”为假命题.其中真命题的个数为 ( ) A .0B .1C .2D .311. 设圆锥曲线C 的两个焦点分别为1F 、2F ,若曲线C 上存在点P 满足1PF ︰12F F ︰2PF =4︰3︰2,则曲线C 的离心率等于 ( )A .2332或B .223或C .122或D .1322或12.对于三次函数32()f x ax bx cx d =+++(0a ≠),定义:设f ″(x )是函数y =f ′(x )的导数,若方程f ″(x )=0有实数解x 0,则称点(x 0,f (x 0))为函数()y f x =的“拐点”.有同学发现:“任、何一个三次函数都有‘拐点’;任何一个三次函数都有对称中心;且‘拐点’就是对称中心.”请你将这一发现为条件,若函数321151()3132122g x x x x x =-+-+-,则⎪⎭⎫ ⎝⎛20111g +⎪⎭⎫ ⎝⎛20112g +⎪⎭⎫⎝⎛20113g +⎪⎭⎫ ⎝⎛20114g +…+⎪⎭⎫ ⎝⎛20112010g = ( ) A .2010 B .2011 C .2012 D .2013二、填空题:把答案填在答题卡相应题号后的横线上(本大题共4小题,每小题5分,共20分)13.执行右侧的程序框图,输出的结果S 的值为_______. 14.已知α、()π,0∈β,且()21tan =-βα,71tan -=β,βα-2=_______.15.等差数列{}n a 的前n 项和为n S ,且9S =36,13S =-104,等比数列{}n b 中,55b a =,77b a =,则6b =________. 16.如右图,设A 、B 、C 、D 为球O 上四点,若AB 、AC 、AD 两两互相垂直,且6==AC AB ,2=AD ,则A 、D 两点间的球面距离__________.三、解答题:共6小题,共70分,解答应写出文字说明、证明过程或演算步骤. 17.(满分12分)设数列{}n a 的前n 项和为n S .已知11a =,131n n a S +=+,n *∈N .(Ⅰ)求数列{}n a 的通项公式;(Ⅱ)记n T 为数列{}n n a +的前n 项和,求n T ;18.(满分12分)以下茎叶图记录了甲、乙两组各四名同学的植树棵树.乙组记录中有一个数据模糊,无法确认,在图中以X 表示.(Ⅰ)如果X =8,求乙组同学植树棵树的平均数和方差;(II )如果X =9,分别从甲、乙两组中随机选取一名同学,求这两名同学的植树总棵数为19的概率.19.(满分12分)如右图,在正三棱柱ABC —A 1B 1C 1中,AA 1=AB ,D是AC 的中点.(Ⅰ)求证:B 1C //平面A 1BD ;(Ⅱ)求二面角A —A 1B —D 的余弦值.20.(满分12分)已知椭圆22221y x ab+=(0)a b >>的一个顶点为B (0,4),离心率e=5l 交椭圆于M 、N 两点. (Ⅰ)求椭圆的标准方程;(II )如果ΔBMN 的重心恰好为椭圆的右焦点F ,求直线l 的方程.21.(满分12分)设函数()()2()2ln 11f x x x =---.(Ⅰ)求函数)(x f 的单调递增区间;(II )若关于x 的方程()230f x x x a +--=在区间[]2,4内恰有两个相异的实根,求实数a 的取值范围.选做题:请考生在22,23,24三题中任选一题作答,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标号涂黑. 22.(满分10分)《选修4—1:几何证明选讲》如下图,AB 、CD 是圆的两条平行弦,BE //AC ,BE 交CD 于E 、交圆于F ,过A 点的切线交DC 的延长线于P ,PC =ED =1,PA =2. (I )求AC 的长; (II )求证:BE =EF .23.(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2(1x tt y t =+⎧⎨=+⎩为参数),以该直角坐标系的原点O 为极点,x 轴的正半轴为极轴的极坐标系下,曲线P 的方程为24cos 30p p θ-+=.(Ⅰ)求曲线C 的普通方程和曲线P 的直角坐标方程; (Ⅱ)设曲线C 和曲线P 的交点为A 、B ,求||AB .24.(满分10分)《选修4-5:不等式选讲》已知函数()|2||5|f x x x =---.(I )证明:3-≤)(x f ≤3;(II )求不等式)(x f ≥2815x x -+的解集.遵义四中2012—2013学年度高三第四次月考数学试题(文)参考答案一、选择题(每小题5分,共60分)1~5DCCDA 6~10A BAAC 11~12DA 二、填空题(每小题5分,共20分) 13.23; 14.1; 15.6-; 16.3π2.三、解答题:本大题共6小题,共70分,解答应写出文字说明、证明过程或演算步骤.17.(满分12分)解:(Ⅰ)由题意,131n n a S +=+,则当2n ≥时,131n n a S -=+.两式相减,得14n n a a +=(2n ≥). ………………2分 又因为11a =,24a =,214a a =,……………………4分 所以数列{}n a 是以首项为1,公比为4的等比数列,……………………5分 所以数列{}n a 的通项公式是14n n a -=(n *∈N ). …………6分(Ⅱ)因为123(1)(2)(3)()n n T a a a n a =++++++++,21(12)(1444)n n -=++++++++(1)1(14)214n n n +-=+-24123n n n +-=+………………………………12分 18.(满分12分)解:(1)当X =8时,由茎叶图可知,乙组同学的植树棵数是:8,8,9,10,所以平均数为;435410988=+++=……………………………………3分方差为.1611])43510()4359()4358[(412222=-+-+-=s …………6分 (Ⅱ)记甲组四名同学为A 1,A 2,A 3,A 4,他们植树的棵数依次为9,9,11,11;乙组四名同学为B 1,B 2,B 3,B 4,他们植树的棵数依次为9,8,9,10,分别从甲、乙两组中随机选取一名同学,所有可能的结果有16个,它们是: (A 1,B 1),(A 1,B 2),(A 1,B 3),(A 1,B 4), (A 2,B 1),(A 2,B 2),(A 2,B 3),(A 2,B 4), (A 3,B 1),(A 2,B 2),(A 3,B 3),(A 1,B 4), (A 4,B 1),(A 4,B 2),(A 4,B 3),(A 4,B 4),用C 表示:“选出的两名同学的植树总棵数为19”这一事件,则C 中的结果有4个,它们是:(A 1,B 4),(A 2,B 4),(A 3,B 2),(A 4,B 2),故所求概率为.41164)(==C P ……12分 19.(满分12分)解:(1)证明:连1AB 交B A 1于点E ,连DE .则E 是1AB 的中点, ∵D 是AC 的中点,∴C B DE 1//∵⊂DE 平面BD A 1,⊄C B 1平面BD A 1,∴C B 1∥平面BD A 1.………6分 (2)法一:设12AA a =,∵AB AA =1,∴1BA AE ⊥,且a AE 2=,作D A AF 1⊥,连EF∵平面BD A 1⊥平面11A ACC ,∴⊥AF 平面BD A 1, ∴1BA EF ⊥∴AEF ∠就是二面角D B A A --1的平面角,在AD A 1∆中,AF =, 在AEF ∆中,EF ===515256cos ===∠aaAEEFAEF ,即二面角D B A A --1的余弦值是515.…………12分 解法二:如图,建立空间直角坐标系.则)0,0,0(D,,0)B ,(,0,0)A a -,1(,0,2)A a a -. ∴1(0,0,2)AA a =,(,0)AB a =,1(,0,2)DA a a =-,,0)DB =设平面BD A 1的法向量是),,(z y x =,则由⎪⎩⎪⎨⎧==⋅=+-=⋅03021y z x ,取)1,0,2(=设平面B AA 1的法向量是),,(z y x =,则由⎪⎩⎪⎨⎧==⋅=+=⋅02031z y x ,取)0,1,3(-= 记二面角D B A A --1的大小是θ,则23cos 5||||25m n m n θ⋅===,即二面角D B A A --1的余弦值是515.…………………………12分 20.(满分12分)解:(1)由已知4b =,且5c a =,即2215c a=,∴22215a b a -=,解得220a =,∴椭圆的方程标准为2212016y x +=; ……5分(2)椭圆右焦点F 的坐标为(2,0), 设线段MN 的中点为Q 00(,)x y ,由三角形重心的性质知2BF FQ =,又(0,4)B , ∴00(2,4)2(2,)x y -=-,故得003,2x y ==-, 求得Q 的坐标为(3,2)-; ……………8分 设1122(,),(,)M x y N x y ,则12126,4x x y y +=+=-,且222211221,120162016x y x y +=+=, …………………10分 以上两式相减得12121212()()()()02016x x x x y y y y +-+-+=,1212121244665545MN y y x x k x x y y -+==-⨯=-⨯=-+-∴,故直线MN 的方程为62(3)5y x +=-,即65280x y --=.………12分21.(满分12分)(1)函数()f x 的定义域为()1,+∞,………………………………………………1分 ∵()()221()2111x x f x x x x -⎡⎤'=--=-⎢⎥--⎣⎦,……………2分 ∵1x >,则使()0f x '>的x 的取值范围为()1,2,故函数()f x 的单调递增区间为()1,2.…………………………4分 (2)方法1:∵()()2()2ln 11f x x x =---,∴()2()3012ln 10f x x x a x a x +--=⇔++--=.……………6分 令()()12ln 1g x x a x =++--, ∵23()111x g x x x -'=-=--,且1x >, 由()03()03g x x g x x ''>><<<得,得1.∴()g x 在区间[2,3]内单调递减,在区间[3,4]内单调递增,………………8分 故2()30f x x x a +--=在区间[]2,4内恰有两个相异实根(2)0,(3)0,(4)0.g g g ≥⎧⎪⇔<⎨⎪≥⎩……10分 即30,42ln 20,52ln 30.a a a +≥⎧⎪+-<⎨⎪+-≥⎩解得:2ln 352ln 24a -≤<-. 综上所述,a 的取值范围是[)2ln35,2ln 24--. ……………12分 方法2:∵()()2()2ln 11f x x x =---,∴()2()3012ln 10f x x x a x a x +--=⇔++--=.…………6分 即()2ln 11a x x =---,令()()2ln 11h x x x =---,∵23()111x h x x x -'=-=--,且1x >, 由()03,()03h x x h x x ''><<<>得1得.∴()h x 在区间[2,3]内单调递增,在区间[3,4]内单调递减.………8分 ∵()23h =-,()32ln 24h =-,()42ln35h =-,又()()24h h <,故2()30f x x x a +--=在区间[]2,4内恰有两个相异实根()()43h a h ⇔≤<. ……………………………………10分即2ln 352ln 24a -≤<-.综上所述,a 的取值范围是[)2ln35,2ln 24--. ……………12分22.(满分10分)《选修4—1:几何证明选讲》解:(I )1,2,2==⋅=PC PA PD PC PA ,4=∴PD ,…(2分)又2,1=∴==CE ED PC ,,,CAB PCA CBA PAC ∠=∠∠=∠CBA PAC ∆∆∴∽,ABAC AC PC =∴,…………(4分) 22=⋅=∴AB PC AC ,2=∴AC ……(5分)(II ) 2==AC BE ,2=CE ,而EF BE ED CE ⋅=⋅, …………(8分)2212=⋅=∴EF ,BE EF =∴. …………(10分) 23.(满分10分)《选修4-4:坐标系与参数方程》解:(Ⅰ)曲线C 的普通方程为01=--y x ,曲线P 的直角坐标方程为03422=+-+x y x .……5分(Ⅱ)曲线P 可化为1)2(22=+-y x ,表示圆心在)0,2(,半径=r 1的圆,则圆心到直线C 的距离为2221==d , 所以2222=-=d r AB .……10分24.(满分10分)《选修4-5:不等式选讲》解:(Ⅰ)()⎪⎩⎪⎨⎧≥<<-≤-=---=5,3,52,722,352x x x x x x x f当52<<x 时,3723<-<-x .所以()33≤≤-x f .…………5分(Ⅱ)由(Ⅰ)可知,当2≤x 时,()1582+-≥x x x f 的解集为空集;当52<<x 时,()1582+-≥x x x f 的解集为{}535≤≤-x x ; 当5≥x 时,()1582+-≥x x x f 的解集为{}65≤≤x x综上,不等式()1582+-≥x x x f 的解集为{}635≤≤-x x ……10分。
遵义四中201X 届第一次月考数学试题(理科) 命题人:邹世海本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分,共150分,考试用时120分钟.第I 卷(选择题 共60分)注意事项:1.答第I 卷前,考生务必将自己的姓名、准考证号、考试科目涂写在答题卡上2.每小题选出答案后,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.不能答在试题卷上 参考公式:如果事件A 、B 互斥,那么 球的表面积公式()()()P A B P A P B +=+ 24S R π=如果事件A 、B 相互独立,那么 其中R 表示球的半径 ()()()P A B P A P B ⋅=⋅ 球的体积公式如果事件A 在一次试验中发生的概率 343V R π=是p ,那么n 次独立重复试验中事件A 其中R 表示球的半径恰好发生k 次的概率 ()(1)k k n kn n P k C P P -=-(0,1,2,,)k n = 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.复数iz -=11的共轭复数是( )A .i 2121+B .i 2121-C .i -1D .i +1 2.已知等差数列}{n a 中,1,16497==+a a a ,则12a 的值是 ( )A .15B .30C .31D .64 3.在△ABC 中,∠C=90°,),3,2(),1,(==AC k AB 则k 的值是 ( )A .5B .-5C .23D .23-4.已知直线m 、n 与平面βα,,给出下列三个命题: ①若;//,//,//n m n m 则αα②若;,,//m n n m ⊥⊥则αα ③若.,//,βαβα⊥⊥则m m其中真命题的个数是( )A .0B .1C .2D .35.函数bx ax f -=)(的图象如图,其中a 、b 为常数,则下列结论正确的是 ( )A .0,1<>b aB .0,1>>b aC .0,10><<b aD .0,10<<<b a6.函数)20,0,)(sin(πϕωϕω<≤>∈+=R x x y 的部分图象如图,则 ( )A .4,2πϕπω==B .6,3πϕπω==C .4,4πϕπω==D .45,4πϕπω==7.已知p :,0)3(:,1|32|<-<-x x q x 则p 是q 的( ) A .充分不必要条件 B .必要不充分条件C .充要条件D .既不充分也不必要条件 8.如图,长方体ABCD —A 1B 1C 1D 1中,AA 1=AB=2,AD=1,点E 、F 、G 分别是DD 1、AB 、CC 1的中 点,则异面直线A 1E 与GF 所成的角是( )A .515arccosB .4πC .510arccos D .2π9.从6人中选4人分别到巴黎、伦敦、悉尼、莫斯科四个城市游览,要求每个城市有一人游览,每人只游览一个城市,且这6人中甲、乙两人不去巴黎游览,则不同的选择方案共有 ( ) A .300种 B .240种 C .144种 D .96种10.已知F 1、F 2是双曲线)0,0(12222>>=-b a by a x 的两焦点,以线段F 1F 2为边作正三角形MF 1F 2,若边MF 1的中点在双曲线上,则双曲线的离心率是( )A .324+B .13-C .213+ D .13+11.设b a b a b a +=+∈则,62,,22R 的最小值是( )A .22-B .335-C .-3D .27-12.)(x f 是定义在R 上的以3为周期的奇函数,且0)2(=f 在区间(0,6)内整数解的个数是( )A .2B .3C .4D .5D 1C 1B 1A 1GE D CBFA1-121xOy311xOy第Ⅱ卷(非选择题 共90分)二、填空题:本大题共4小题,每小题4分,共16分,把答案填在答题卡的相应位置 13.6)12(xx -展开式中的常数项是 (用数字作答)14.若曲线4y x =的一条切线l 与直线480x y +-=垂直,则l 的方程为 。
考号姓名第36题第37题第38题第39题第40题第41题第42题320017杨振宇151******** 320026杨思涵151512111299 320039何敬宁151******** 320060杨畅121514121179 320005王烨151714121179 320044蔡思江91714511109 320048郑博浩121312711117 320136梅蕊121314710108 320055朱梅12151481069 320040李柔凌12151471298 320019李艳9131451097 320035娄恺阳151******** 320049刘余151514111149 320001涂越茜151******** 320028陈俊旭12131441165 320004雷薛冰1215146698 320033谭洛151******** 320053冉雪娇9151491198 320056刘晚莹151******** 320036李垚12151431077 320045王静151314211108 320169张燕91514121177 320025周露91514111299 320020万友红12151471169 320003伍佳毅12131271268 320041周然121312810109 320034袁玲1211143747 320021滕新12151471138 320062吴林燕9131261147 320063杨洁151******** 320030黄文风12151431247 320118陈虹宇1515127669 320176肖璇12151491237 320196田茂菁91314610109 320027罗姣姣1215147998 320009胡苗121514111157 320125胡平12151412927 320104丁家丽12151461069 320061熊明英12171410978 320010晏飞璇151******** 320022张贵艳151******** 320032吴雯雯121514121194 320135曾莉媛9131461156 320192彭志浩91514611108320087杨玲玲121512412116 320152韩威9131471268 320114刘美君12151471168 320148文雯1291471197 320074刘恋9131441098 320002杨甫纯12131491137 320029鲁再酸1215146528 320008黎欣语121512811117 320013高涓华12151271165 320209朱唯信1215147944 320043郑小芳1215145936 320145帅嘉懿9171261027 320248何滨洪12171461256 320155张萌12101211676 320006李若颖151514610118 320016唐彦君1513146657 320149周放12131431038 320046黄婉岚12131221268 320011陈柳12151231197 320014黄梦娇151******** 320068向一竹9171471166 320261韦潇121514121034 320146毛钰12151410548 320147曾倩9151431078 320042朱琴1215122558 320202杨悦12151491277 320180刘锋9131231267 320072郭金121112111177 320052唐天玉121512312108 320012李婳婳12171471257 320100黄爽151******** 320093周易9151251157 320127王梦兰151******** 320092吴婉月913148897 320059刘茜12131491177 320057李丹丹9151461058 320031孙丽雯12111271167 320054童诚12151461198 320165王真9121061157 320153景俊夫1215144638 320235鄢宇915146937 320094吉思霓9131251056 320200陈秀敏9151451077 320203韩锦芮12131431277 320185陈安熊12151231067 320249雷馥菲12151281167 320173陆俊柯915145787320187陈姝行12131461152 320037陈崇玉121714101177 320171李青青12131271078 320117郭韵12101431133 320141陈建9131210338 320164李雪梅1215146857 320126尹洁12131441136 320047唐思颖1513124538 320183陈娴1211147856 320024郑丽12131401165 320018章颖12131421048 320070袁媛91112121043 320134刘梦然9131241167 320295贾艳齐121510101124 320189周鑫兰12111461184 320077付昱9151411555 320205陈绍琴9131212559 320121王镜瑜9131211027 320193赵爽12151461178 320293张喆31114101244 320143周倩倩151314912109 320259谢睿12131410624 320086蒲琳911148357 320194陈园园12151461179 320038李眉洁12151461037 320007鲁琼1213144958 320015冯小凡1213146579 320314张文勋9151231138 320133李文渊121514111247 320102袁嘉玉12131231036 320247尹纯1213128536 320263李玲9151481153 320101谭洁911861086 320120涂从莉1511147577 320078杨璐嘉917146458 320137邹冬蕊9131051133 320170石永霞1213148547 320154徐玉姣911143588 320264陆芷莹9151412468 320286艾山茹12101061155 320058王铃鑫615127544 320172周洋9111261238 320181闵靖胰1517148748 320206娄碗清1515125647 320292陈希12131412563 320182刘畅12111471039 320163赵晓宇12151071257320139简宾雁1211145638 320201胥兰若12101441163 320177张朝钦915148425 320195李砚青1213684117 320269刘航苹1213146125 320050王淋钰1213126534 320198董新蕾1215124578 320051杰晗晴12131451166 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贵州省遵义市第四中学2017 届高三下学期第一次月考数学(文科)试卷第Ⅰ卷(选择题)一、选择题1.设U R , A { 3, 2, 1,01,,2} , B { x x 1} ,则 A C U B( )A . {1,2}B . { 1,0,1,2}C . { 3, 2, 1,0}D . {2}2.已知复数 z2 i( i 为虚数单位),那么 z 的共轭复数为( )1 iA . 2B .1 3iC .1 3i D .3 3i22222 23.已知 a b 0 , c 0 ,下列不等关系中正确的是()A . ac bcB . a c b cC . log a ( a c) log b (bc)D .a bca cb 4.已知 m, n是两条不重合的直线,,, 是三个两两不重合的平面,给出下列四个命题:①若 m, m ,则// ;②若, ,则 // ;③若 m , n, m // n ,则 // ;④若m, n是异面直线, m, m //, n //,则// .其中真命题是( )A .①和④B .①和③C .③和④D .①和②5.在区间 [0,] 上随机地取一个数 x ,则事件“1sin x3 ”发生的概率为()222A .1B .1C .1D . a,b2346.已知等差数列 { a n},a2a 46,则其前 5项和S5( )A . 5B . 6C . 15D .307.若将函数 ysin 2x 的图像向左平移 π个单位,则平移后的图象()6A .关于点 (π,0) 对称B .关于直线 xπ对称1212π 对称D .关于直线 xπC .关于点 ( ,0)对称1212x y 1 08.若 x, y 满足约束条件x 2 y 0,则 z xy 的最大值为()x 2 y 2 0A .-3B .1C . 1D .3229.函数 f ( x) 的定义域为开区间(a, b) ,导函数 f '(x) 在 (a,b) 内的图象如图所示, 则函数 f (x) 在开区间 (a,b)A .1 个B .2 个C .3 个D .4 个10.一个三棱锥的三视图是三个直角三角形,如图所示,则该三棱锥的外接球表面积为()A . 29πB . 30πC .29πD . 216π211.函数 f (x)sin2 x 的大致图像是()exA .B .C .D .x 2 y 2 1(a b 0) , F 是椭圆的右焦点,A 为左顶点,点P 在椭圆上, PF x 轴,若12.已知椭圆2b 2 a1)PFAF ,则椭圆的离心率为(4A .3B .1C . 3D . 242 22第Ⅱ卷(非选择)二、填空题13.给定两个向量 a(3,4) , b(2,1) ,且 (a mb)( a b) ,则实数m等于________.14.已知 f ( x)(1) x , x01________.2,则 f (8) f (log 2)log 2 x, x0415.观察下列各式:11322 21115 2232311117 2232424⋯照此规律,当n N 时,1111________.22( n2231)16.已知函数 f ( x) 为定义在 (0,) 上的连续可导函数,且 f ( x) xf '(x) ,则不等式 x2 f (1) f (x) 0 的解x集是 ________.三、解答题17.(1) 证明:如果a0 , ba ba b ;0 ,那么ab(2) 已知2 x3y4z10 ,求 x2y 2z2的最小值.18.已知数列a n的各项均为正数,S n是数列a n的前 n 项和,且4S n a n22a n3.(1) 求数列a n的通项公式;(2) 已知b n2n,求数列 a n b n的前n项和 T n.19.为检验寒假学生自主学习的效果,年级部对某班50名学生各科的检测成绩进行了统计,下面是政治成绩的频率分布直方图,其中成绩分组区间是:[40,50) , [50,60) , [60,70), [70,80), [80,90), [90,100] .(1)求图中的x值及平均成绩;(2)从分数在 [70,80) 中选5人记为 a1 , a2 , , a5,从分数在 [40,50) 中选3人,记为 b1 ,b2 , b3,8人组成一个学习小组.现从这 5 人和 3 人中各选 1 人作为组长,求a1被选中且b1未被选中的概率.20.如图,已知AF平面 ABCD ,四边形ABEF 为矩形,四边形ABCD 为直角梯形,DAB 90 ,AB// CD, AD AF CD 2, AB 4.(1)求证: AF // 平面 BCE ;(2)求证: AC 平面 BCE .(3)求三棱锥 E BCF 的体积.21.已知椭圆x2y 2 1 ,过点 M ( 1,0) 作直线 l 交椭圆于 A,B 两点, O 是坐标原点.4(Ⅰ)求 AB 中点 P 的轨迹方程;(Ⅱ)求OAB 的面积的最大值,并求此时直线l 的方程.22.已知函数f ( x)=xe x a(1x2x)(a R) .2(Ⅰ)若 a0,求曲线 y f ( x) 在点 (1,f (1))处的切线方程;(Ⅱ)若x(2,0) , f ( x)0 恒成立,求实数 a 的取值范围;(Ⅲ)当 a0时,讨论函数 f ( x) 的单调性.。
遵义四中高三数学第一次月考试题(文科)命题人 韩贞焱一、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. 若集合}ln |{x y x M ==, }1|{2+==x y y N ,那么 =N M ( )A.),0(+∞B .),0[+∞C . ),1(+∞D . ),1[+∞2.下列函数中,既是奇函数又是区间),0(+∞上的增函数的是 ( )A . 21x y = B .1-=x y C .3x y = D .xy 2=3. “21sin =A ”是“A=30º”的( ) A . 充分而不必要条件B . 必要而不充分条件C . 充分必要条件D . 既不充分也不必要条件4. 设向量a 和b 的长度分别为4和3,夹角为60°,则|a +b |的值为( ) A .37 B . 37 C . 13 D .135.若()f x 的若各项均不为零的数列{}n a 满足*12()n n a a n N +=∈,则4321a a a a ⋅⋅的值等于( ) A .4B .8C .16D .646. ,m n 是不同的直线,αβ、是不重合的平面,下列命题为真命题的是( ) A .若,,m m n n αα∥∥则∥ B .若,m n αβ⊥⊥,则n m ⊥ C . 若,,m m αβαβ⊥∥则⊥ D .若,,m m αβαβ⊂⊥则⊥7. 在8月举行的深圳世界大学生运动会中,将某5名志愿者分配到3个场馆参加接待工作,每个场馆至少安排一名志愿者的方案种数为( )A .540B .300C .180D .1508.面积为S 的△ABC ,D 是BC 的中点,向△ABC 内部投一点,那么点落在△ABD 内的概率为 ( ) A. 31 B 16. C .14D .129. 设,10<<<a b 则下列不等式成立的是( )A .12<<b ab B .b a )21()21(21<< C .12<<ab a D .0log log 2121<<a b 10. 设)(x f '是函数)(x f 的导函数,)(x f y '=的图象如图所示,则)(x f y =的图象最有可能的是( )11. 已知函数2sin(2)()2y x πϕϕ=+<的图象经过点)1,0(,则该函数的一条对称轴方程为 ( )A . 6π=x B .12π-=x C .12π=x D .6π-=x12. 已知点F ,A 分别为双曲线C :22221x y a b-= (0,0)a b >>的左焦点、右顶点,点(0,)B b 满足FB AB ⊥,则双曲线的离心率为A .152+ B. 31+ C .152-+ D. 31-二、填空题(本大题共有4小题,每小题5分,满分20分。
遵义市2011届高三年级遵义四中组团七校联考试题数学(文科)本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分,满分150分,考试时间120分钟.参考公式:如果事件A 、B 互斥,那么 球的表面积公式()()()P A B P A P B +=+ 24S R π=如果事件A 、B 相互独立,那么 其中R 表示球的半径()()()P A B P A P B ⋅=⋅ 球的体积公式如果事件A 在一次试验中发生的概率343V R π=是p ,那么n 次独立重复试验中事件A 其中R 表示球的半径恰好发生k 次的概率()(1)(0,1,2,,)k k n kn n P k C P P k n -=-=第Ⅰ卷 (选择题 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{1,2,3,4}M ⊆,且{1,2}{1,2}M = ,则集合M 的个数是 (A )1 (B )2 (C )3 (D )42. 不等式302x x -<+的解集为 (A ){|23}x x -<< (B ){|2}x x <- (C ){|23}x x x <->或 (D ){|3}x x > 3.函数1)y x =≤的反函数是(A )21(10)y x x =--≤≤ (B )21(01)y x x =-≤≤ (C )21(01)y x x =-≤≤ (D )21(0)y x x =-≤ 4. 已知函数2()log f x x =,则函数(1)y f x =-的大致图象是5.(A )3132 (B )3132- (C )78 (D )78-(A )(B )(C ) (D )6. 已知平面上三点A 、B 、C 满足||3,||4,||5,AB BC CA ===则AB BC BC CA CA AB ⋅+⋅+⋅ 的值等于(A )25 (B )24 (C )-25 (D )-247. 一个正三棱锥的四个顶点都在半径为R 的球面上,其中底面的三个顶点在该球的一个大圆上,,则球的体积为 (A)13π (B)43π (C)323π (D)16π8. 已知等差数列{}n a 的前n 项和为n S ,且210S =,555S =,则过点(,)n P n a *()n N ∈和(2,2)n Q n a ++*()n N ∈的直线的一个方向向量坐标可以是(A)(2,4) (B)()1,1-- (C)1,12⎛⎫-- ⎪⎝⎭ (D)14,33⎛⎫-- ⎪⎝⎭9. 设函数()p f x x qx =+的导函数()21,f x x '=+则数列1{}()f n 的前n 项的和为10. 若(,1]x ∈-∞-时,不等式2()420x x m m -⋅-<恒成立,则实数m 的取值范围是 (A )(-2,1) (B )(-4,3) (C )(-1,2) (D )(-3,4)11. 曲线1[2,2])y x =∈-与直线(2)4y k x =-+有两个公共点时,实数k 的取值范围是(A)50,12⎛⎫ ⎪⎝⎭ (B)53,124⎛⎤ ⎥⎝⎦ (C)5,12⎛⎫+∞ ⎪⎝⎭ (D)13,34⎛⎤ ⎥⎝⎦12. 已知椭圆22194x y +=,椭圆左焦点为1F ,O 为坐标原点,A 是椭圆上一点,点M 在线段1AF 上,且12OA OF OM += ,2OM =,则点A 的横坐标为(A ) (B (C ) (D )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61()x的项展开式中的第5项的值等于5,则x = .14. 将5名志愿者分配到3个不同的场馆参加接待工作,每个场馆至少分配一名志愿者的方案数为 .15. 已知实数,x y 满足条件2040250x y x y x y -+≥⎧⎪+-≥⎨⎪--≤⎩则24z x y =+-的最大值为 .16. 若对于函数()f x 的定义域内的任一个x 的值,均有()()(),2f x f x f x π=-=-+对于下列五个函数:①24cos cos y x x =-;②44sin cos y x x =-;③sin(2)cos(2)44y x x ππ=+++ ;④|tan |y x =. 其中符合已知条件的函数序号为 .三、解答题:本大题共6小题,共70分.解答应写出文字说明,证明过程或演算步骤. 17.(本小题满分10分)设向量(1)OM = ,向量(cos ,sin )(0).ON αααπ=-<<(1)若向量OM ON ⊥,求tan α的值;(2)求||MN的最大值及此时α的值。
2019-2020学年贵州省遵义四中高三上学期第一次月考数学(文)第Ⅰ卷(选择题部分共60分)一.选择题(本大题共12小题,每小题5分,共60分)1.已知集合,,则()A. B. C. D.2.已知复数满足,则()A. B. C. D.3.下列函数中,既是偶函数,又在上单调递增的是()A. B. C. D.4.函数的定义域是()A. B. C. D.5.给出下列四个命题,其中假命题是()A.B.C.D.6.设函数()A. 1B. 2C. 3D. 47.函数的零点所在的区间()A. B. C. D.8.设函数定义在实数集上,,且当x≥1时,,则有()A. B.C. D.9.已知奇函数在上是增函数,若,,,则的大小关系为( )A. B. C. D. [来源:学科网] 10.函数的大致图像是()A B C D11.已知函数,函数恰有三个不同的零点,则实数的取值范围为()A. B. C. D.12.已知实数若关于的方程有三个不同的实根,则的取值范围为()A. B. C. D.第Ⅱ卷(非选择题部分共90分)二.填空题(本题共四小题,每小题5分,共20分)13.幂函数在上为增函数,则____________14.已知函数,若的值域为,则实数的取值范围是__________.15.设函数,则在点处的切线方程为__________.16.已知函数在区间上是增函数,则实数的取值范围是______ ___.三.解答题(本题共70分,作答时应写出必要的文字说明,证明过程或演算步骤)17.已知函数(1)求的单调递增区间;(2)求在区间上的最大值和最小值;18.某校从参加高三模拟考试的学生中随机抽取60名学生,按其数学成绩(均为整数)分成六组,,…,后得到如下部分频率分布直方图,观察图中的信息,回答下列问题:[来源:](1)补全频率分布直方图;(2)估计本次考试的数学平均成绩(同一组中的数据用该组区间的中点值作代表);(3)用分层抽样的方法在分数段为的学生成绩中抽取一个容量为6的样本,再从这6个样本中任取2人成绩,求至多有1人成绩在分数段内的概率.19.如图,在四棱锥中,底面是边长为的正方形,侧面底面,20.且,设分别为的中点.(1)求证:平面;(2)求证:面平面;20.已知椭圆 (a>b>0)的左、右焦点分别为F1,F2,点M(0,2)是椭圆的一个顶点,△F1MF2是等腰直角三角形.(1)求椭圆的方程;(2)过点M分别作直线MA,MB交椭圆于A,B两点,设两直线的斜率分别为k1,k2,且k1+k2=8,证明:直线AB过定点.21.已知函数(1)当时,求的单调区间;(2)若时,恒成立,求整数的最小值;请考生在第(22)~(23)两题中任选一题做答,如果多做,则按所做的第一题计分.做答时用2B铅笔在答题卡上把所选题目对应的题号涂黑,并将所选题号填入括号中.22.(本小题满分10分)选修4—4:坐标系与参数方程直角坐标系中,直线(为参数),曲线(为参数),以该直角坐标系的原点为极点,轴的非负半轴为极轴建立极坐标系,曲线的方程为.(1)分别求曲线的极坐标方程和曲线的直角坐标方程;(2)设直线交曲线于两点,直线交曲线于两点,求的长.23.(本小题满分10分)选修4-5:不等式选讲已知函数.(1)求的值域;(2)若的最大值为,已知均为正实数,且,求证:.2019-2020学年贵州省遵义四中高三上学期第一次月考数学(文)参考答案选择题:BBDBC DCCCA BA填空题:13. 2 14. 15. 16 .17.(Ⅰ)最小正周期为,单调递增区间是;(Ⅱ)最大值,最小值.【解析】试题分析:(Ⅰ)将函数化简为,最小正周期,令,求出的范围,得到函数的单调递增区间;(Ⅱ)根据的范围,求出,再求出最大值和最小值。
2010届遵义四中高三毕业班第四次月考数学试卷(文科)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,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,请将答题卡中相应题号的答案涂黑.) 1.函数y =A .(,4](1,)-∞-+∞B .(,1)[4,)-∞-+∞C .[4,1)-D .(1,4]-2.若sin tan 0αα⋅>,则α是A .第一或第二象限的角B .第一或第三象限的角C .第一或第四象限的角D .第二或第四象限的角3.sin15cos15︒︒+的值等于A .1 B.2CD4.设动点(,)P x y 满足条件110x y x y ≤⎧⎪≤⎨⎪+≥⎩,则z x y =-取得最小值时,点P 的坐标是A .(0,0)B .(1,1)-C .(1,1)-D .(1,1)5.“2x >”是“11x ->”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6.把函数sin 21y x =-的图象按向量(,1)4a π=-平移,所得函数的一个递减区间为A .[0,]πB .[,0]2π-C .[,]22ππ-D .[0,]2π7.若等差数列{}n a 的前9项和945S =,且31a =,则7a =A .7B .8C .9D .108.设m 、n 是两条不同的直线,α、β是两个不同的平面。
下列四个命题中,正确的是A .//,αβ,,m n αβ⊂⊂,则//m nB .,αβ⊥m β⊥,则m α⊂C .,αβ⊥m α⊂,n β⊂,则m n ⊥D .//,αβm β⊥,//n α,则m n ⊥9.经过圆2220x y y +-=的圆心且与直线20x y -+=平行的直线方程是A .1y x =-+B .1y x =-C .1y x =+D .1y x =--10.551(1)(1)x x+-的展开式中的x 项的系数等于A .10B .5C .10-D .5-11.若直线kx y =与曲x x x y 2323+-=相切,则k 的值为A .241或-B .241-或 C .2 D .4112.若实数q p y x 、、、满足122222=+=+y x q p 、,则qy px +的最大值是A .2B .2C .3D .3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,请将答案填在答题卡上相应区域) 13.数列{}n a 中,若111,2(*)n n a a a n N +==∈,则{}n a 的通项n a = 14.函数2log (4)(0)y x x =+>的反函数是15.过点(2,2)P -和曲线33y x x =-相切的直线方程是16.关于函数2()(1cos 2)cos ()f x x x x R =-∈.下列四种说法:①()f x 的最小正周期是π; ②()f x 是偶函数; ③()f x 的最大值是2;④()f x 在区间[0,]4π上是增函数其中正确的是:三、解答题(本大题共6小题,共70分,解答应写出文字说明、证明过程或演算步骤) 17.(本小题满分10分)已知α是第三象限的角,且)sin()cot()23tan()2cos()sin()(αππααπαπαπα-------=f(Ⅰ)化简)(αf ; (Ⅱ)若51)23cos(=-πα,求)(αf 的值. 18.(本小题满分12分)在四棱锥ABCD P -中,PD ⊥底面ABCD ,底面ABCD 为正方形,PD=DC ,E 、F 分别是AB 、PB 的中点. (Ⅰ)求证:EF ⊥CD ;(Ⅱ)求二面角F -DE -B 的大小.19.(本小题满分12分)已知数列{}3log (1)n a -*()n N ∈为等差数列,且14a =,482a =.(1)求数列{}n a 的通项公式; (2)求数列{}n na 的前n 项和n S20.(本小题满分12分)从一个装有2个白球、4个红球和若干个黑球(这些球除了颜色不同外,其余都相同)的袋中,采用有放回的方式摸球,每次摸出一个球.若连续摸两次,至少有一个黑球的概率为716. (Ⅰ)求袋中黑球的个数;(Ⅱ)若连续摸4次球,求摸到红球恰为2次或3次的概率.21.(本小题满分12分)已知椭圆C :22221(0,0)x y a b a b+=>>的两个焦点为1(1,0)F -、2(1,0)F,点P 在椭圆C 上. (Ⅰ)求椭圆C 的方程;(Ⅱ)记O 为坐标原点,过2(1,0)F 的直线l 与椭圆C 相交于E 、F 两点,若OEF ∆的,求直线l 的方程. 22.(本小题满分12分)设323()(2)632f x ax a x x =-++-,,x R ∈a 是常数,且0a > (Ⅰ)求()f x 的单调递增区间;(Ⅱ)若()f x 在1x =时取得极大值,且直线1y =-与函数()f x 的图象有三个交点,求实数a 的取值范围.。
2010届遵义四中高三年级第一次月考
数学试题(文科)
内容:立体几何、概率统计、导数和函数、集合和简易逻辑
命题人:罗仕友
本试卷分为第I卷和第II卷两部分,共150分。
考试时间120分钟
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。
1.一个总体中共有10个个体,用简单随机抽样的方法,从中抽取一个容量为4的样本,则某个特定个体入样的概率是()
A.B.C.D.
2.若集合的()A.必要不充分条件B.充分不必要条件
C.充要条件D.既不充分也不必要条件
3.曲线在点(1,3)处的切线的倾斜角为()
A.300B.450C.600D.1200
4.已知集合()A.B.
C.D.
5.若函数的图象顶点在第四象限,则其导函数的图象可能是()
A B C D
6.设则实数t的取值范围是()
A.B.C.D.
7.为了调查某厂工人生产某种产品的能力,随机抽查了20位工人某天生产该产品的数量,产品数量的分组区间为[45,55),[55,65),[65,75),[75,85),[85,95),由此得到频率分布在方图如图所示,则这20名工人中一天生产该产品数量在[55,75)的人数是( )
A .8
B .5
C .13
D .15
8.函数,已知时取得极值,则( )
A .2
B .3
C .4
D .5
9.曲线处的切线与坐标轴围成的三角形面积为( )
A .
B .
C .
D .
10.若当x>0时,不等式恒成立,则的最小值为
( ) A .-3 B .-2 C .-1 D .-
11、正四棱锥P -ABCD 的所有棱长相等,E 为PC 的中点,
那么异面直线BE 与PA 所成角的余弦值等于
A . B. C. D.
12、把边长为 a 的正△ABC 沿高线 AD 折成60 的二面角,这时 A 到边 BC 的距离是( )
A. 415a
B. 36a
C. 413a
D. 23a
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,把答案填在题中横线上。
13.一个单位共有职工200人,其中不超过45岁的有120人,超过45岁的有80人,为了调查职工的健康状况,用分层抽样的方法从全体职工中抽取一个容量为25的样本,应抽取超过45岁的职工人。
14.不等式的解集为。
15.已知函数在R上是减函数,求的取值范围。
16.若三棱锥的三个侧面两两垂直,且侧棱长均为,则其外接球的表面积是.
三、解答题:本大题共6小题,共70分,解答应写出文字说明,证明过程或演算步骤。
17.(10分)求函数的单调区间。
18.(12分)已知曲线方程为求过点B(3,5)且与曲线相切的直线方程。
19.(12分)设集合求实数组成的集合。
20.(12分)设关于的不等式的解集为P,不等式的解集为。
(1)若
(2)若求正数的取值范围。
21.(12分)如图,平面PCBM⊥平面ABC,∠PCB=90°,PM∥BC,直线AM与直线PC所成的角为60°,又AC=1,BC=2PM=2,∠ACB=90°
(1)求证:AC⊥BM;
(2)求二面角M-AB-C的大小;
(3)求多面体PMABC的体积.
22.设时取得极值,
(1)求的值;
(2)若对于任意的成立,求c的取值范围。