山西省名校2013-2014学年高三第四次四校联考数学(理科)试卷及答案

山西省名校2013-2014学年高三第四次四校联考数学(理科)试卷及答案
山西省名校2013-2014学年高三第四次四校联考数学(理科)试卷及答案

山西省忻州一中 长治二中 临汾一中 康杰中学2013-2014

学年高三第四次四校联考数学试题(理科)A 卷

命题: 康杰中学 临汾一中 长治二中 忻州一中

【满分150分,考试时间120分】

一、选择题(5×12=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,请将正确选项用2B 铅笔涂黑答题纸上对应题目的答案标号)

1.集合A={x|x 2-2x>0},B={y|y= 2 x ,x>0},R 是实数集,则(C R B)∪A 等于( ) A .R B .(-∞,0)∪1,+∞) C .(0,1 D .(-∞,1∪(2,+∞)

2. 已知z 是复数z 的共轭复数, z+z + z ·z =0,则复数z 在复平面内对应的点的轨迹是( ) A .圆 B .椭圆 C .双曲线 D .抛物线

3.设公比 错误!未找到引用源。的等比数列{错误!未找到引用源。}的前错误!未找到引用源。项和为错误!未找到引用源。,则错误!未找到引用源。 ( ) A .错误!未找到引用源。 B .错误!未找到引用源。 C .错误!未找到引用源。 D .错误!未找到引用源。 4.命题p :?x ∈R,sinx-cosx< 2

命题q :“a=1”是“直线l 1:ax+2y-1=0与直线l 2:x+(a+1)y+4=0平行”的充分条件 则下列命题中,真命题是

A .(?q)∨p

B .p ∧q

C .(?p)∧(?q)

D .(?p)∨ (?q) 5.某一个班全体学生参加物理测试,成绩的频率

分布直方图如图,则该班的平均分估计是 A .70 B .75 C .68 D .66

6.在长为8的线段AB 上任取一点C ,现作一矩形,

邻边长分别等于AC 、BC 的长,则该矩形面积大于

15的概率 ( )

A .16

B .14

C .23

D .45

7.右图给出了一个程序框图,其作用是输入x 的值,输出相应的y 值.若要使输入的x 值与输出的y 值相等,则这样的x 值有 ( )

A .1个

B .2个

C .3个

D .4个

8.把函数f(x)=sin 2x-2sinxcosx+3cos 2x 的图像沿错误!未找到引用源。轴向左平移m(m>0)个单位,所得函数

g(x)的图像关于直线x= π

8

对称,则m 的最小值为

/分

频率

试题类型:A

( )

A.错误!未找到引用源。 B.错误!未找到引用源。 C.错误!未找到引用源。 D.错误!未找到引用源。 9.已知一个几何体的三视图如图所示,则这个几何体的体积是

( )

A .233

B .236

C .113

D .103

10.已知四边形ABCD ,∠BAD=120o,∠BCD=60o,AB =AD =2,则AC 的最大值为( ) A .433 B .4 C .833

D .8

11.已知双曲线x 2a 2 ? y 2

b 2=1(a>0,b>0),右焦点F 到渐近线的距离小于等于a,则该双曲线离心

率的取值范围为( )

A .错误!未找到引用源。

B .错误!未找到引用源。

C .

D .错误!未找到引用源。

12.若f(x)满足x 2f '(x)—2xf(x)=x 3e x ,f(2)= —2e 2.则x>0时,f(x) ( )

A.有极大值,无极小值 B.有极小值,无极大值 C.既有极大值,又有极小值 D.既无极大值,也无极小值

二、填空题:(本大题共4小题,每小题5分,共20分,把答案填在答题纸的相应位置上)

13.(2x+1x )6

展开式中的常数项等于________

14.?ABC 中,|CB →|cos ∠ACB=|BA →|cos ∠CAB=3,且AB →·BC →

=0,则AB 长为 _ 15.已知直线x+y+2a-b=0(b ∈R,0≤a ≤2)与圆x 2+y 2=2有交点,则a+b 的最大值为 16.四棱锥P-ABCD 底面是一个棱长为2的菱形,且∠DAB=60o,各侧面和底面所成角均为60o,则此棱锥内切球体积为

三、解答题(本大题6小题,共70分,解答应写出文字说明、证明过程或演算步骤,并把解答写在答卷纸的相应位置上)

17.在等差数列{a n }错误!未找到引用源。中,a 1=3,其前n 项和为S n 错误!未找到引用源。,等比数列{b n }错误!未找到引用源。的各项均为正数,b 1=1错误!未找到引用源。,公比为

q ,且b 2+S 2=12错误!未找到引用源。, q=S 2

b 2错误!未找到引用源。.

(1)求a n 错误!未找到引用源。与b n ;

(2)求1S 1+1S 2+…+1

S n

错误!未找到引用源。的取值范围.

18.为了普及环保知识增强环保意识,某校从理工类专业甲班抽取60人,从文史类乙班抽取50人参加环保知识测试 ⑴ 根据题目条件完成下面2×2列联表,并据此判断你是否有99%的把握认为环保知识与专业有关

⑵为参加上级举办的环保知识竞赛,学校举办预选赛,预选赛答卷满分100分,优秀的同学得60分以上通过预选,非优秀的同学得80分以上通过预选,若每位同学得60分以上的概率为12,得80分以上的概率为1

3,现已知甲班有3人参加预选赛,其中1人为优秀学生,若

随机变量X 表示甲班通过预选的人数,求X

的分布列及期望E (X ). 附: k 2

=n(ad-bc)2

(a+b)(c+d)(a+c)(b+d)

, n=a+b+c+d

19.(本题满分12分)

如图,四棱锥P-ABCD 的底面是矩形,侧面PAD ⊥底面ABCD ,在?PAD 中PA →+PD →=2PE →

,且AD=2PE

(1)求证:平面PAB ⊥平面PCD ;

(2)如果AB=BC,∠PAD=60o,求DC 与平面PBE 的正弦值

20.已知点P 在圆x 2

+y 2

=1上运动,DP ⊥y 轴,垂足为D,点M 在线段DP 上,且|DM||DP|=2

2 (Ⅰ)求点M 的轨迹方程;

(Ⅱ)直线l 与y 轴交于点Q(0,m)(m≠0),与点M 的轨迹交于相异的两点A,B ,且AQ →=λQB →

,若OA →+λOB →=4OQ →

.求m 的取值范围.

B

P A

C

D

E

21.已知函数错误!未找到引用源。(错误!未找到引用源。为自然对数的底),错误!未找到引用源。(错误!未找到引用源。为常数),错误!未找到引用源。是实数集错误!未找到引用源。上的奇函数.

⑴ 求证:错误!未找到引用源。错误!未找到引用源。;

⑵ 讨论关于错误!未找到引用源。的方程:错误!未找到引用源。错误!未找到引用源。的根的个数;

请考生在(22).(23).(24)三题中任选一题作答,如果多答,则按做的第一题记分.作

答时用2B 铅笔在答题卡上把所选题目对应题号右侧的方框涂黑. 22.(本小题满分10分)选修4—1:几何证明选讲

如图,已知PA 与圆O 相切于点A ,经过点O 的割线PBC 交圆O 于点B 、C ,∠APC 的平分线分别交AB 、AC 于点D 、E ,

(Ⅰ)证明:∠ADE=∠AED ; (Ⅱ)若AC=AP ,求PC

PA

的值。

23.(本小题满分10分)选修4-4:坐标系与参数方程

已知直线l 的参数方程是???x=22t y=2

2t+4

2

(t 是参数),圆C 的极坐标方程为ρ=2cos(θ+π

4

).

(1)求圆心C 的直角坐标;

(2)由直线l 上的点向圆C 引切线,求切线长的最小值.

P

试题类型:A

2013-2014学年第四次四校联考

数学试题答案(理)A 卷

命题: 康杰中学 临汾一中 长治二中 忻州一中

【满分150分,考试时间120分】

一、选择题

D A AD C B D AD B C B 【答案】 二、填空题:

13.60 14. 6 15.8 16.π

6 三、解答题

17.解:(1)设{a n }的公差为d , ∵b 2+S 2=12错误!未找到引用源。, q=S 2b 2

∴???q+6+d=12q 2=6+d

,解得q=3或q=-4(舍),d=3. 故a n =3n,b n =3n-1 ……………4分 (2)S n =n(3+3n)2=3n(n+1)2,∴1S n =23n(n+1)=23(1n -1

n+1

)

∴1S 1+1S 2+…+1S n =23(1-12+12-13+…+1n -1n+1)=23(1-1

n+1) ……………8分

∵n≥1,∴0<1n+1≤12, 12≤1-1n+1<1

∴13≤23(1-1n+1)<23

,

即13≤1S 1+1S 2+…+1S n <2

3 ……………12分 18.解(1)2×2

由错误!未找到引用源。算得,

错误!未找到引用源。,所以有99%的把握认为环保知识与专业有关 (4分)

(2)不妨设3名同学为小王,小张,小李且小王为优秀,记事件M,N,R 分别表示小王,小张,小李通过预选,则P (M )=12, P (N )=P (R )= 1

3 (5分)

∴随机变量X 的取值为0,1,2,3 (6分)

所以P(x=0)=P(M ˉN ˉR ˉ)=12×23×23 = 29, P(x=1)=P(MN ˉR ˉ+M ˉNR ˉ+M ˉN ˉR)= 12×23×23+12×23×13+12×

2

3×13= 49, P(x=2)=P(MNR ˉ+M ˉNR+MN ˉR)= 12×23×13+12×23×13+12×13×13 = 5

18, P(x=3)=P(MNR)= 12×13×13 = 1

18 (10分) E(X) =0×29+1×49+2×518+3×118 = 7

6 (12分)

19.解:(1)∵四棱锥P-ABCD 的底面是矩形

所以CD ⊥AD ,

又∵侧面PAD ⊥底面ABCD ,且侧面PAD∩底面ABCD=AD , 所以CD ⊥PA , 因为在?PAD 中,PA →+PD →=2PE →

,且AD=2PE

所以PD ⊥PA 而CD ∩PD=D

所以PA ⊥平面PCD , ∵PA ?平面PAB

所以平面PAB ⊥平面PCD ……………………………………4分

(2)如图,以AB 为x 轴,AD 为y 轴建立空间直角坐标系A-XYZ , 设AB=4,

则A(0,0,0),B(4,0,0),C(4,4,0),D(0,4,0)E(0,2,0)

在Rt ?APD 中AD=4, ∠PAD=60o,∴P(0,1,3) ……………6分 ∴BP →=(-4,1,3),BE →

=(-4,2,0)

设平面PBE 的一个法向量为n →

=(x,y,z) 由???n →·BP →=0

n →·BE →=0,得???-4x+y+3z=0-4x+2y=0. 令y=2得

x=1,z=233,∴ n →=(1,2, 233)…………10分

而DC →

=(4,0,0),

∴cos

>= DC →·n →|DC →|·|n →

| = 5719

∴DC 与平面PBE 的正弦值为

57

19

……………12分 20.解:(Ⅰ)设M(x,y ),P(x 0,y 0),

则?????x x 0

= 2

2y=y 0

得???x 0=2x y 0=y

又P(x 0,y 0)在圆x 2+y 2=1上 ∴y 2+2x 2=1

∴点M 的轨迹方程为y 2+2x 2=1 ………4分

(Ⅱ)设直线l 与点M 的轨迹交于相异的两点A(x 1,y 1,B(x 2,y 2).把y=kx+m 代入y 2+2x 2=1得(k 2+2)x 2+2kmx+m 2-1=0,∴?=4(k 2-2m 2+2)>0 ………6分 x 1+x 2 = -2km k 2+2, x 1?x 2=m 2-1

k 2+2

∵AQ →=λQB →,∴OA →+λOB →=(1+λ)OQ →

, 又OA →+λOB →=4OQ →.∴λ=3,即AQ →=3QB →,

∴x 1=-3x 2, ………8分 由

?

????x 1+x 2 =

-2km k 2+2

x 1?x 2= m 2-1k 2

+2x 1= -3x 2

得4k 2m 2+2m 2-k 2-2=0 ………10分 当m 2= 14时,4k 2m 2+2m 2-k 2-2= - 3

2

<0,不合题意

当m 2

≠ 14时,k 2= 2-2m 24m 2-1,由①得k 2>2m 2

-2,∴2-2m 24m 2-1>2m 2-2,解得m ∈(-1,-12)∪(12

,1)

∴m 的取值范围为(-1,-1

2)∪(12

,1) ………12分

21.⑴ 证明:设错误!未找到引用源。,则错误!未找到引用源。,

∵当错误!未找到引用源。时,错误!未找到引用源。,当错误!未找到引用源。时,错误!未找到引用源。,∴F(x)min =F(0)=0

∴F(x)≥0,即错误!未找到引用源。; ………6分

⑵ 解:∵错误!未找到引用源。是实数集错误!未找到引用源。上的奇函数,∴错误!未找到引用源。,错误!未找到引用源。,

∴方程为错误!未找到引用源。,即错误!未找到引用源。.

设错误!未找到引用源。,则由错误!未找到引用源。得,x=e , ………8分 又∵当错误!未找到引用源。时,错误!未找到引用源。,当错误!未找到引用源。时,错误!未找到引用源。,

∴错误!未找到引用源。,

设错误!未找到引用源。,则错误!未找到引用源。,………10分 ∴① 当错误!未找到引用源。时,原方程无解;

② 当错误!未找到引用源。时,方程有且只有一根错误!未找到引用源。; ③ 当错误!未找到引用源。时,方程有两根; ………12分 请考生在(22).(23).(24)三题中任选一题作答,如果多答,则按做的第一题记分.作答时用2B 铅笔在答题卡上把所选题目对应题号右侧的方框涂黑. 22.解:(1)∵PA 是切线,AB 是弦,∴∠BAP=∠C 又∵∠APD=∠CPE,∴∠BAP+∠APD=∠C+∠CPE. ∵∠ADE=∠BAP+∠APD, ∠AED=∠C+∠CPE.

∴∠ADE=∠AED ……………5分 (2)由(1)知∠BAP=∠C,又∠APC=∠BPA,∴?APC ∽?BPA,PC PA =AC AB ,

∵AC=AP , ∠BAP=∠C=∠APC,

由三角形的内角和定理知:∠C+∠APC+∠PAC=180o,

∵BC 是圆O 的直径,∴∠BAC=90o,∴∠C+∠APC+∠BAP=90o,∴∠C=∠APC=∠BAP=30o, 在Rt ?ABC 中, AC AB =3,∴PC

PA = 3 ……………10分

23.解:(1)∵ρ=2cos(θ+π

4

)

∴ρ=2 cos θ-2sin θ,∴ρ2

=2ρcos θ-2ρsin θ …………(2分) ∴圆C 的直角坐标方程为x 2

+y 2-2x+2y=0 …………(3分) ∴圆心C 的直角坐标为(

22,- 2

2

) …………(5分) (2)法一: 由直线l 上的点向圆C 引切线长为

(

22t-22)2+(22t+ 22

+42)2-1=t 2+8t+40=(t+4)2

+24≥26, ∴直线l 上的点向圆C 引切线长的最小值为26 …………(10分) 法二:直线l 的普通方程为x-y+42=0, …………(6分)

圆心C 到l 直线距离是

52

|2422

22|

=++, …………(8分)

∴直线l 上的点向圆C 引的切线长的最小值是621522=- …………(10分) 24.解:(1)∵a 2+b 2≥2ab, c 2+d 2≥2cd

∴a 2+b 2+c 2+d 2≥2(ab+cd), 当且仅当a=b=c=d=

2

2

时取“=” …………(2分) 又∵a 2+b 2=1, c 2+d 2=1

∴2(ab+cd)≤2 …………(4分) ∴ab+cd ≤1 …………(5分) (2)设m →=(a,b),n →

=(1,3),

∵|m →?n →|≤|m →|?|n →

|, …………(8分) ∴|a+3b|≤2a 2+b 2=2 ∴-2≤a+3b ≤2

∴a+3b 的取值范围为-2,2 …………(10分)

2020年高三英语【名校、地市联考】精选仿真模拟卷01(试卷版)

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2020届四校联盟高三年级第二次联考试卷 英语 考试时间:120分钟考试总分:150分 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.When will the woman get the goods? A.In September. B.In October. C.In November. 2.What is Henry like? A.Hard-working. B.Friendly. C.Generous. 3.Whose favorite is football? A.Jane’s. B.Helen’s. C.Mary’s. 4.What did the man think of the flight? A.Long and boring. B.Long but interesting. C.Short and comfortable. 5.What will Susan do on Sunday afternoon? A.Go to a park. B.Go to a game. C.Have a barbecue. 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,每小题将给出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。 6.What is the boy dissatisfied with? A.The service. B.The price. C.The environment. 7.What will the school board do? A.Add more dishes. B.Reduce the price. C.Open more windows. 听第7段材料,回答第8、9题。 8.When did the man know Jane? https://www.360docs.net/doc/682772329.html,st weekend. B.When he was in middle school. C.When he was in primary school. 9.What does Jane lack? A.Experience. B.Knowledge. C.Determination. 听第8段材料,回答第10至12题。 10.Who did Grace come with? A.No one. B.John. C.Teresa. 11.What will John do next week? A.Meet Grace. B.Study French. C.Start a new job. 12.Where does the conversation take place? A.In a college. B.At a party. C.In a company. 听第9段材料,回答第13至16题。 13.What is John worried about now? A.Choosing a job. B.Choosing a college. C.Choosing a major. 14.What is John interested in? A.Reading. B.Dancing. C.Drawing. 15.What will John do with much money? A.Travel. B.Help people. C.Build a library. 16.What does the woman not talk about? A.Incomes. B.Vacations. C.Scholarships.听第10段材料,回答第17至20题。 17.How many languages does the MLA focus on? A.10. B.30 C.300. 18.Which is the fourth most common language in the US? A.Chinese. B.Spanish. C.French. 19.How many Korean speakers are there in the US? A.Almost900,000. B.Over190,000. C.About90,000. 20.What does the speaker do? A.A language expert. B.A TV host. C.A Korean officer. 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A、B、C和D项中,选出最佳选项,并在答题卡上将该项涂黑。 A Jane Austen's final novel,Persuasion,is the story of Anne Elliot and her love for Frederick Wentworth.Persuaded to refuse his suggestion of marriage,Anne spends eight years unhappy until he re-enters her life. Details Stock(现货)Out of stock Prize Uncertain(no recent updates from the publisher) Publisher Pan Macmillan Publishing House Macmillan Collector's Library Library of Congress England-Social life and customs novel Description What happens when we listen to others instead of our heart?That is the theme of Jane Austen's final novel,Persuasion.After Anne Elliot follows the advice of her dearest friend and breaks off her engagement to Frederick Wentworth,a handsome man with neither good luck nor rank,happiness escapes from her.Eight years later,Anne remains unmarried,and her father spends money carelessly,which has brought her family poverty.When a newly wealthy Frederick returns from the Napoleonic Wars,Anne realizes her feelings remains unchanged.But will Frederick forgive her and offer Anne a second chance at love? The novels of Jane Austen will transport readers imaginary worlds and provide excitement, inspiration and entertainment for years to come.All of these novels have attractive pictures and will brighten our life. Author's Introduction Born in1775,Jane Austen published four of her six novels anonymously(匿名地),and she passed away in1817.Her work was not widely read until the late nineteenth century,and her fame grew from then on.Known for her amusing,clever and sharp insight into social traditions,her novels about love, relationships,and society are popular.In novels such as Pride and Prejudice,Mansfield Park and Emma, she developed her careful analysis of life back that time through descriptions of the middle class in small towns.Her sharp descriptions of ordinary people have given her novels timeless popularity.She has earned a place in history as one of the most loved writers of English literature. 21.The novel Persuasion is________. A.a love story B.no longer published C.mainly about advice on speaking skills D.based on Jane Austen’s real experience 22.Why does Anne Elliot choose not to marry Frederick Wentworth? A.Because she doesn't like him anymore. B.Because she is convinced to do so by her friend. C.Because she is afraid that he will die in the Napoleonic Wars. D.Because she doesn't think he is rich enough to support her family. 23.We know from the passage Jane Austen's works________. A.have disappeared from the market B.are about the life of the middle class in big cities in England C.focus on the life of the middle class in small places in her days D.have brought her great popularity she always wanted to have

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