2018届吉林省实验中学高三上学期第六次月考英语试题Word版含答案

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德惠市实验中学2018-2019学年高三上学期第三次月考试卷数学含答案

德惠市实验中学2018-2019学年高三上学期第三次月考试卷数学含答案

德惠市实验中学2018-2019学年高三上学期第三次月考试卷数学含答案 班级__________ 座号_____ 姓名__________ 分数__________一、选择题(本大题共12小题,每小题5分,共60分.每小题给出的四个选项中,只有一项是符合题目要求的.)1. 下列哪组中的两个函数是相等函数( )A .()()4f x x =g B .()()24=,22x f x g x x x -=-+C .()()1,01,1,0x f x g x x >⎧==⎨<⎩ D .()()=f x x x =,g 2. 已知在数轴上0和3之间任取一实数,则使“2log 1x <”的概率为( )A .14 B .18 C .23 D .112 3. 在等比数列}{n a 中,821=+n a a ,8123=⋅-n a a ,且数列}{n a 的前n 项和121=n S ,则此数列的项数n等于( )A .4B .5C .6D .7【命题意图】本题考查等比数列的性质及其通项公式,对逻辑推理能力、运算能力及分类讨论思想的理解有一定要求,难度中等.4. 已知一元二次不等式f (x )<0的解集为{x|x <﹣1或x >},则f (10x )>0的解集为( ) A .{x|x <﹣1或x >﹣lg2} B .{x|﹣1<x <﹣lg2} C .{x|x >﹣lg2} D .{x|x <﹣lg2}5. 已知集合{}2|10A x x =-=,则下列式子表示正确的有( )①1A ∈;②{}1A -∈;③A ∅⊆;④{}1,1A -⊆.A .1个B .2个C .3个D .4个 6. 与命题“若x ∈A ,则y ∉A ”等价的命题是( )A .若x ∉A ,则y ∉AB .若y ∉A ,则x ∈AC .若x ∉A ,则y ∈AD .若y ∈A ,则x ∉A 7. 若{}n a 为等差数列,n S 为其前项和,若10a >,0d <,48S S =,则0n S >成立的最大自 然数为( )A .11B .12C .13D .14 8. 下列正方体或四面体中,P 、Q 、R 、S 分别是所在棱的中点,这四个点不共面的一个图形是 ( )9. 已知复合命题p ∧(¬q )是真命题,则下列命题中也是真命题的是( )A .(¬p )∨qB .p ∨qC .p ∧qD .(¬p )∧(¬q )10.为调查某地区老人是否需要志愿者提供帮助,用简单随机抽样方法........从该地区调查了500位老年人,结果如由2()()()()()n ad bc K a b c d a c b d -=++++算得22500(4027030160)9.96720030070430K ⨯⨯-⨯==⨯⨯⨯ 附表:参照附表,则下列结论正确的是( )①有99%以上的把握认为“该地区的老年人是否需要志愿者提供帮助与性别无.关”; ②有99%以上的把握认为“该地区的老年人是否需要志愿者提供帮助与性别有.关”; ③采用系统抽样方法比采用简单随机抽样方法更好; ④采用分层抽样方法比采用简单随机抽样方法更好; A .①③ B .①④ C .②③ D .②④ 11.函数y=a x +2(a >0且a ≠1)图象一定过点( )A .(0,1)B .(0,3)C .(1,0)D .(3,0)12.“3<-b a ”是“圆056222=++-+a y x y x 关于直线b x y 2+=成轴对称图形”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3.841 6.635 10.828k 2() 0.050 0.010 0.001P K k ≥【命题意图】本题考查圆的一般方程、圆的几何性质、常用逻辑等知识,有一定的综合性,突出化归能力的考查,属于中等难度.二、填空题(本大题共4小题,每小题5分,共20分.把答案填写在横线上)13.已知函数322()7f x x ax bx a a =++--在1x =处取得极小值10,则ba的值为 ▲ .14.平面向量,满足|2﹣|=1,|﹣2|=1,则的取值范围 .15.若直线:012=--ay x 与直线2l :02=+y x 垂直,则=a . 16.已知向量(1,),(1,1),a x b x ==-若(2)a b a -⊥,则|2|a b -=( )A .2B .3C .2D 【命题意图】本题考查平面向量的坐标运算、数量积与模等基础知识,意在考查转化思想、方程思想、逻辑思维能力与计算能力.三、解答题(本大共6小题,共70分。

云南省师范大学附属中学2018届高三英语第八次月考试题(扫描版)

云南省师范大学附属中学2018届高三英语第八次月考试题(扫描版)

云南省师范大学附属中学2018届高三英语第八次月考试题(扫描版)云南师大附中2018届高考适应性月考卷(八)英语参考答案第一部分阅读理解(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)1~5 ACBAD 6~10 CACBD 11~15 DBDCB第二节(共5小题;每小题2分,满分10分)16~20 FGAED第二部分语言知识运用(共两节,满分45分)第一节(共20小题;每小题1.5分,满分30分)21~25 ACDBC 26~30 BACDB 31~35 DBCAD 36~40 ABACD第二节(共10小题;每小题1.5分,满分15分)41.of 42.wasted 43.other 44.getting/ to get 45.Winners46.Unsuccessful 47.and 48.what 49.be viewed 50.continuously第三部分写作(共两节,满分35分)第一节短文改错(共10小题;每小题1分,满分10分)As a lucky student,I attended the 2017 National English Summer Camp holding ina beautiful①heldcity of South West from July 24 to 29,it was sponsored by the English Weekly.Over100 students②which或it前加andand 20 English teaching experts from all over the province take part in it.All the campers must speak③tookEnglish.During the sixth days,a series of English activities were organized.Wealso visited some④six ⑤places of interest as well.Therefore,we had a colorful farewell party.The camp provided us for a great⑥Besides/Additionally/Moreover ⑦with number of value opportunities to speak English,make friends and exchange learning experience.⑧valuableAt∧end of the camp I found myself English improved a lot.⑨the ⑩my第二节书面表达(满分25分)【参考范文】Good morning,dear teachers and friends,I’m Li Hua.Today I am honored to represent us graduates to deliver a speech.Firstly,I’d like to extend our hear tfelt thanks to the teachers for your help and guidance in the past three years.Without your guidance and encouragement,we couldn’t have made such great progress.Now we have not only had a good command of all the subjects,but also learned how to get along with each other and how to be a responsible person.What a good time! To repay you,we should work harder to serve the people and society better in the future.Next,as for my friends,I want to express my best wishes.I sincerely hope you can make great achievements in your future life and career.Thanks again.And all the best to my friends.【解析】第一部分阅读理解第一节A【语篇导读】本文是应用文。

临江市实验中学2018-2019学年高三上学期11月月考数学试卷含答案

临江市实验中学2018-2019学年高三上学期11月月考数学试卷含答案

临江市实验中学2018-2019学年高三上学期11月月考数学试卷含答案一、选择题1. 已知函数f (x )=m (x﹣)﹣2lnx (m ∈R ),g (x )=﹣,若至少存在一个x 0∈[1,e],使得f (x 0)<g (x 0)成立,则实数m 的范围是( )A .(﹣∞,] B .(﹣∞,) C .(﹣∞,0]D .(﹣∞,0)2.双曲线=1(m ∈Z )的离心率为( ) A.B .2C.D .33. 平面α与平面β平行的条件可以是( )A .α内有无穷多条直线与β平行B .直线a ∥α,a ∥βC .直线a ⊂α,直线b ⊂β,且a ∥β,b ∥αD .α内的任何直线都与β平行4. 设a=sin145°,b=cos52°,c=tan47°,则a ,b ,c 的大小关系是( ) A .a <b <c B .c <b <a C .b <a <c D .a <c <b5. 若复数z 满足i 1i z =--,则在复平面内,z 所对应的点在( )A. 第一象限B. 第二象限C. 第三象限D. 第四象限 6. 如图,在等腰梯形ABCD 中,AB=2DC=2,∠DAB=60°,E 为AB 的中点,将△ADE 与△BEC 分别沿ED 、EC 向上折起,使A 、B 重合于点P ,则P ﹣DCE 三棱锥的外接球的体积为( )A. B. C. D.7. 已知圆C 方程为222x y +=,过点(1,1)P -与圆C 相切的直线方程为( )A .20x y -+=B .10x y +-=C .10x y -+=D .20x y ++= 8. 下列关系正确的是( )A .1∉{0,1}B .1∈{0,1}C .1⊆{0,1}D .{1}∈{0,1}9. 已知命题p :对任意x ∈R ,总有3x>0;命题q :“x >2”是“x >4”的充分不必要条件,则下列命题为真命题的是( )A .p ∧qB .¬p ∧¬qC .¬p ∧qD .p ∧¬q班级_______________ 座号______ 姓名_______________ 分数__________________________________________________________________________________________________________________10.设函数的集合,平面上点的集合,则在同一直角坐标系中,P 中函数的图象恰好经过Q 中两个点的函数的个数是 A4 B6 C8 D1011.某程序框图如图所示,该程序运行后输出的S 的值是( )A .﹣3 B.﹣ C. D .212.已知集合23111{1,(),,}122i A i i i i -=-+-+(其中为虚数单位),2{1}B x x =<,则A B =( ) A .{1}- B .{1} C.{- D. 二、填空题13.设全集U=R ,集合M={x|2a ﹣1<x <4a ,a ∈R},N={x|1<x <2},若N ⊆M ,则实数a 的取值范围是 . 14.设f (x )为奇函数,且在(﹣∞,0)上递减,f (﹣2)=0,则xf (x )<0的解集为 .15.已知向量=(1,2),=(1,0),=(3,4),若λ为实数,( +λ)⊥,则λ的值为 . 16.计算sin43°cos13°﹣cos43°sin13°的值为 . 17.复数z=(i 虚数单位)在复平面上对应的点到原点的距离为 .18.若x ,y 满足约束条件⎩⎪⎨⎪⎧x +y -5≤02x -y -1≥0x -2y +1≤0,若z =2x +by (b >0)的最小值为3,则b =________.三、解答题19.(本小题满分10分)已知曲线22:149x y C +=,直线2,:22,x t l y t =+⎧⎨=-⎩(为参数). (1)写出曲线C 的参数方程,直线的普通方程;(2)过曲线C 上任意一点P 作与夹角为30的直线,交于点A ,求||PA 的最大值与最小值.20.已知函数f (x )=|2x ﹣a|+|2x+3|,g (x )=|x ﹣1|+2. (1)解不等式|g (x )|<5;(2)若对任意x 1∈R ,都有x 2∈R ,使得f (x 1)=g (x 2)成立,求实数a 的取值范围.21.已知{}{}22,1,3,3,31,1A a a B a a a =+-=--+,若{}3AB =-,求实数的值.22.(本小题满分10分)选修41-:几何证明选讲如图所示,已知PA 与⊙O 相切,A 为切点,过点P 的割线交圆于C B ,两点,弦AP CD //,BC AD ,相 交于点E ,F 为CE 上一点,且EC EF DE ⋅=2. (Ⅰ)求证:P EDF ∠=∠;(Ⅱ)若2,3,2:3:===EF DE BE CE ,求PA 的长.23.在数列中,,,其中,.(Ⅰ)当时,求的值;(Ⅱ)是否存在实数,使构成公差不为0的等差数列?证明你的结论; (Ⅲ)当时,证明:存在,使得.24.已知椭圆()2222:10x y C a b a b +=>>的左右焦点分别为12,F F ,椭圆C 过点1,2P ⎛ ⎝⎭,直线1PF 交y 轴于Q ,且22,PF QO O =为坐标原点.(1)求椭圆C 的方程;(2)设M 是椭圆C 上的顶点,过点M 分别作出直线,MA MB 交椭圆于,A B 两点,设这两条直线的斜率 分别为12,k k ,且122k k +=,证明:直线AB 过定点.临江市实验中学2018-2019学年高三上学期11月月考数学试卷含答案(参考答案)一、选择题1.【答案】B【解析】解:由题意,不等式f(x)<g(x)在[1,e]上有解,∴mx<2lnx,即<在[1,e]上有解,令h(x)=,则h′(x)=,∵1≤x≤e,∴h′(x)≥0,∴h(x)max=h(e)=,∴<h(e)=,∴m<.∴m的取值范围是(﹣∞,).故选:B.【点评】本题主要考查极值的概念、利用导数研究函数的单调性等基础知识,解题时要认真审题,注意导数性质的合理运用.2.【答案】B【解析】解:由题意,m2﹣4<0且m≠0,∵m∈Z,∴m=1∵双曲线的方程是y2﹣x2=1∴a2=1,b2=3,∴c2=a2+b2=4∴a=1,c=2,∴离心率为e==2.故选:B.【点评】本题的考点是双曲线的简单性质,考查由双曲线的方程求三参数,考查双曲线中三参数的关系:c2=a2+b2.3.【答案】D【解析】解:当α内有无穷多条直线与β平行时,a与β可能平行,也可能相交,故不选A.当直线a∥α,a∥β时,a与β可能平行,也可能相交,故不选B.当直线a⊂α,直线b⊂β,且a∥β时,直线a 和直线b可能平行,也可能是异面直线,故不选C.当α内的任何直线都与β平行时,由两个平面平行的定义可得,这两个平面平行,故选D.【点评】本题考查两个平面平行的判定和性质得应用,注意考虑特殊情况.4. 【答案】A【解析】解:∵a=sin145°=sin35°,b=cos52°=sin38°,c=tan47°>tan45°=1, ∴y=sinx 在(0,90°)单调递增, ∴sin35°<sin38°<sin90°=1, ∴a <b <c 故选:A【点评】本题考查了三角函数的诱导公式的运用,正弦函数的单调性,难度不大,属于基础题.5. 【答案】B 【解析】 6. 【答案】C【解析】解:易证所得三棱锥为正四面体,它的棱长为1,故外接球半径为,外接球的体积为,故选C .【点评】本题考查球的内接多面体,球的体积等知识,考查逻辑思维能力,是中档题.7. 【答案】A 【解析】试题分析:圆心(0,0),C r ,设切线斜率为,则切线方程为1(1),10y k x kx y k -=+∴-++=,由,1d r k =∴=,所以切线方程为20x y -+=,故选A.考点:直线与圆的位置关系.8. 【答案】B【解析】解:由于1∈{0,1},{1}⊆{0,1},故选:B【点评】本题考查的知识点是元素与集合关系的判断,其中正确理解集合元素与集合关系的实质,即元素满足集合中元素的性质,是解答本题的关键.9. 【答案】D【解析】解:p :根据指数函数的性质可知,对任意x ∈R ,总有3x>0成立,即p 为真命题, q :“x >2”是“x >4”的必要不充分条件,即q 为假命题, 则p ∧¬q 为真命题, 故选:D【点评】本题主要考查复合命题的真假关系的应用,先判定p ,q 的真假是解决本题的关键,比较基础10.【答案】B【解析】本题考查了对数的计算、列举思想a=-时,不符;a=0时,y=log2x过点(,-1),(1,0),此时b=0,b=1符合;a=时,y=log2(x+)过点(0,-1),(,0),此时b=0,b=1符合;a=1时,y=log2(x+1)过点(-,-1),(0,0),(1,1),此时b=-1,b=1符合;共6个11.【答案】B【解析】解:由程序框图得:第一次运行S==﹣3,i=2;第二次运行S==﹣,i=3;第三次运行S==,i=4;第四次运行S==2,i=5;第五次运行S==﹣3,i=6,…S的值是成周期变化的,且周期为4,当i=2015时,程序运行了2014次,2014=4×503+2,∴输出S=﹣.故选:B.【点评】本题考查了循环结构的程序框图,根据程序的运行功能判断输出S值的周期性变化规律是关键.12.【答案】D【解析】考点:1.复数的相关概念;2.集合的运算二、填空题13.【答案】[,1].【解析】解:∵全集U=R,集合M={x|2a﹣1<x<4a,a∈R},N={x|1<x<2},N⊆M,∴2a﹣1≤1 且4a≥2,解得2≥a≥,故实数a的取值范围是[,1],故答案为[,1].14.【答案】(﹣∞,﹣2)∪(2,+∞)【解析】解:∵f(x)在R上是奇函数,且f(x)在(﹣∞,0)上递减,∴f(x)在(0,+∞)上递减,由f(﹣2)=0,得f(﹣2)=﹣f(2)=0,即f(2)=0,由f(﹣0)=﹣f(0),得f(0)=0,作出f(x)的草图,如图所示:由图象,得xf(x)<0⇔或,解得x<﹣2或x>2,∴xf(x)<0的解集为:(﹣∞,﹣2)∪(2,+∞)故答案为:(﹣∞,﹣2)∪(2,+∞)15.【答案】﹣.【解析】解:+λ=(1+λ,2λ),∵(+λ)⊥,∴(+λ)•=0,即3(1+λ)+8λ=0,解得λ=﹣.故答案为﹣.【点评】本题考查了平面向量的数量积运算,向量垂直与数量积的关系,是基础题.16.【答案】.【解析】解:sin43°cos13°﹣cos43°sin13°=sin(43°﹣13°)=sin30°=,故答案为.17.【答案】 .【解析】解:复数z==﹣i (1+i )=1﹣i ,复数z=(i 虚数单位)在复平面上对应的点(1,﹣1)到原点的距离为:.故答案为:.【点评】本题考查复数的代数形式的混合运算,复数的几何意义,考查计算能力.18.【答案】 【解析】约束条件表示的区域如图, 当直线l :z =2x +by (b >0)经过直线2x -y -1=0与x -2y +1=0的交点A (1,1)时,z min =2+b ,∴2+b=3,∴b =1. 答案:1三、解答题19.【答案】(1)2cos 3sin x y θθ=⎧⎨=⎩,26y x =-+;(2【解析】试题分析:(1)由平方关系和曲线C 方程写出曲线C 的参数方程,消去参数作可得直线的普通方程;(2)由曲线C 的参数方程设曲线上C 任意一点P 的坐标,利用点到直线的距离公式求出点P 直线的距离,利用正弦函数求出PA ,利用辅助角公式进行化简,再由正弦函数的性质求出PA 的最大值与最小值.试题解析:(1)曲线C 的参数方程为2cos 3sin x y θθ=⎧⎨=⎩,(为参数),直线的普通方程为26y x =-+.(2)曲线C 上任意一点(2cos ,3sin )P θθ到的距离为|4cos 3sin 6|d θθ=+-.则||5sin()6|sin 30d PA θα==+-,其中α为锐角,且4tan 3α=,当sin()1θα+=-时,||PA 取当sin()1θα+=时,||PA .考点:1、三角函数的最值;2、椭圆的参数方程及直线的的参数方程. 20.【答案】【解析】解:(1)由||x ﹣1|+2|<5,得﹣5<|x ﹣1|+2<5 ∴﹣7<|x ﹣1|<3,得不等式的解为﹣2<x<4…(2)因为任意x1∈R,都有x2∈R,使得f(x1)=g(x2)成立,所以{y|y=f(x)}⊆{y|y=g(x)},又f(x)=|2x﹣a|+|2x+3|≥|(2x﹣a)﹣(2x+3)|=|a+3|,g(x)=|x﹣1|+2≥2,所以|a+3|≥2,解得a≥﹣1或a≤﹣5,所以实数a的取值范围为a≥﹣1或a≤﹣5.…【点评】本题考查函数的恒成立,绝对值不等式的解法,考查分析问题解决问题的能力以及转化思想的应用.21.【答案】23 a=-.【解析】考点:集合的运算.22.【答案】【解析】【命题意图】本题考查相交弦定理、三角形相似、切割线定理等基础知识,意在考查逻辑推理能力.23.【答案】【解析】【知识点】数列综合应用【试题解析】(Ⅰ),,.(Ⅱ)成等差数列,,即,,即.,.将,代入上式,解得.经检验,此时的公差不为0.存在,使构成公差不为0的等差数列.(Ⅲ),又,令.由,,……,将上述不等式相加,得,即.取正整数,就有24.【答案】(1)2212xy+=;(2)证明见解析.【解析】试题解析:(1)22PF QO =,∴212PF F F ⊥,∴1c =, 2222221121,1a b c b a b+==+=+, ∴221,2b a ==,即2212x y +=; (2)设AB 方程为y kx b =+代入椭圆方程22212102k x kbx b ⎛⎫+++-= ⎪⎝⎭,22221,1122A B A B kb b x x x x k k --+==++,11,A B MA MB A B y y k k x x --==,∴()112A B A B A B A B MA MB A BA By x x y x x y y k k x x x x +-+--+=+==,∴1k b =+代入y kx b =+得:1y kx k =+-所以, 直线必过()1,1--.1 考点:直线与圆锥曲线位置关系.【方法点晴】求曲线方程主要方法是方程的思想,将向量的条件转化为垂直.直线和圆锥曲线的位置关系一方面要体现方程思想,另一方面要结合已知条件,从图形角度求解.联立直线与圆锥曲线的方程得到方程组,化为一元二次方程后由根与系数的关系求解是一个常用的方法. 涉及弦长的问题中,应熟练地利用根与系数关系、设而不求法计算弦长;涉及垂直关系时也往往利用根与系数关系、设而不求法简化运算;涉及过焦点的弦的问题,可考虑用圆锥曲线的定义求解.。

吉林省实验中学2014届高三上学期第三次阶段检测地理试题Word版含答案

吉林省实验中学2014届高三上学期第三次阶段检测地理试题Word版含答案

吉林省实验中学2013—2014年度高三上学期第三次阶段检测地理试题命题人:刘涵 审题人:李永华、李彩虹一、单项选择题。

(共25题,每题仅有一个正确选项,每题2分,共50分。

)图1为世界某区域某月份的气压分布略图,箭头表示风向。

据此完成1~2题。

1.下列有关图中甲、乙两地天气的叙述,正确的是A .甲地为高压中心,气流下沉多晴朗天气B .甲地为低压中心,气流上升多阴雨天气C .乙地为高压中心,气流下沉多阴雨天气D .乙地为低压中心,气流上升多阴雨天气 2.此月份悉尼(151°E ,34°S)的盛行风向大致是A .西北B .东北C .西南D .东南图2③处河段以下为河流中下游平原地 区,图3是河流流速与沉积物半径关系图, 某科考小组在③处河段考察测量出河水平 均流速为0.4m/s ,同时发现沉积物中有鹅 卵石堆积。

读下面两图完成3~4题。

河流流速(m/s )0 2 4 6 8颗粒半径(cm )0.000001100.0 10.01.00.001 0.00010.1 0.01黏土细砂 石块 鹅卵石砾石 粗砂 图23.推测③处鹅卵石堆积物的形成是由于A .①处围海造陆造成的影响B .②处河道疏浚造成的影响C .④处河段溯源侵蚀造成的影响D .河流发生特大洪水造成的影响 4.推测②处的河流主要堆积物可能是 A .粗砂、细砂 B .砾石、粗砂 C .细砂、黏土 D .大小混杂图4是①、②二地高空与低空的垂直气压差分布图,回答5~6题。

图45.如果是热力形成的气压差,则①、②二地垂直高度上的气压分布,最有可能是b6.在图示高度范围内①、②之间的某地风力在垂直方向上的变化,正确的是c读某区域图(图5),回答7~8题。

△A B C D100N150N枯水期水位 国界丰水期水位 河流图57.图中①②③④四地,地形最为平坦的是A .①B .②C .③D .④ 8.关于金边至K 河段水文特征的叙述正确的是A .8月,水量大,自K 流向金边B .2月,水量大,自金边向流KC .2月,水量小,自K 流向金边D .8月,水量小,自金边流向K 冰川表面的气温与同海拔自由大气相比,始终处于稳定的低温状态。

宁夏育才中学2018届高三上学期第四次月考生物试题 Word版含解析

宁夏育才中学2018届高三上学期第四次月考生物试题 Word版含解析

宁夏育才中学2018届高三第四次月考生物试题一、选择题1. 有氧条件下醋酸杆菌能将糖类转化成醋酸。

下列叙述错误的是A. 醋酸杆菌能在酸性环境中生存B. 醋酸杆菌的细胞膜上含有磷脂和蛋白质C. 醋酸杆菌在线粒体中将糖类转化成醋酸D. 醋酸杆菌拟核DNA中(A+G)/(T+C)=1【答案】C【解析】醋酸杆菌能将糖类转化成醋酸,其生存环境为酸性,所以能在酸性环境中生存,A 正确;所有生物的膜结构都主要由磷脂与蛋白质组成,醋酸杆菌的细胞膜也不例外,B正确;醋酸杆菌无线粒体,C错误;根据碱基互补配对原则,A=T,C=G,醋酸杆菌拟核DNA中(A+G)/(T+C)=1,D正确。

2. 下列有关核酸和蛋白质的叙述,错误的是A. 某些核酸和蛋白质具有转运功能B. 核酸和蛋白质是细胞内的能源物质C. 核酸和蛋白质都能被相应的酶水解D. 蛋白质和DNA都具有一定的空间结构【答案】B【解析】核酸中的tRNA以及蛋白质中的载体蛋白具有转运功能,A正确;细胞内的主要能源物质是糖类,B错误;核酸能被相应的酶水解为小分子物质核苷酸,蛋白质能被相应的酶水解为氨基酸,C正确;蛋白质和核酸都有一定的空间结构,如DNA具有独特的双螺旋结构,D正确。

【点睛】本题考查了蛋白质和核酸结构的相关知识,意在考查学生识记并理解所学知识的要点,把握知识间的内在联系的能力。

3. 每条染色体两端都有一段特殊序列的DNA,称为端粒,端粒DNA序列在每次细胞分裂后会缩短一截,当短到一定程度时,端粒内侧正常的DNA序列会受到损伤,使细胞开始衰老。

下列叙述错误的是A. 端粒缩短,细胞将会激活衰老机制B. 端粒缩短能保持染色体结构的完整性C. 无限增殖的癌细胞中端粒一般不缩短D. 同一种体细胞端粒长度与其有丝分裂能力呈正相关【答案】B【解析】根据题干信息“端粒DNA序列在每次细胞分裂后会缩短一截,当短到一定程度时,端粒内侧正常的DNA序列会受到损伤,使细胞开始衰老”可知,端粒缩短,细胞将会激活衰老机制,A正确;端粒是每条染色体两端的一段特殊序列的DNA序列,因此端粒缩短会破坏染色体结构的完整性,B错误;根据题意可知,每次细胞分裂后端粒就会缩短一截,直到不能分裂,而癌细胞能够无限增殖,说明其端粒一般不缩短,C正确;据题意可知,端粒越长,细胞分裂次数越多,因此同一种体细胞端粒长度与其有丝分裂能力呈正相关,D正确。

2019-2020学年齐齐哈尔实验中学高三英语月考试题及答案

2019-2020学年齐齐哈尔实验中学高三英语月考试题及答案

2019-2020学年齐齐哈尔实验中学高三英语月考试题及答案第一部分阅读(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、D四个选项中选出最佳选项AAmid the coronavirus outbreak, the U. S. Department of Homeland Security recommends having at least a two - week supply of water and food.PotatoesShelf life:2 to 5 weeks if stored in a cool, dry, dark placeYukon Gold, red, and fingerling potatoes will last from two to three weeks. Larger white potatoes can last for three to five weeks. Sweet potatoes have about the same shelf life. Don't store them next to onions, however. The two might go together well in cooking, but raw, each gives off gases and moisture that might cause the other to spoil faster.Tea※Shelf life:6 to 12 months past "sell - by" dateDried tea leaves, whether loose (in a sealed container) or in teabags (in an unopened box) can easily last a year or more if they' re not subjected to damp or humidity. However, the tea does tend to lose flavor over time.Peanuts● Shelf life:1 to 2 monthsPeanuts in their shell, especially when kept cool and dry, are perfectly happy in the cupboard for as long as two months.Canned fruits and vegetables● Shelf life:1 to 2 years past "sell - by” dateCanningis an extremely efficient means of preserving food. Generally speaking, if canned foods aren't subjected to extreme heat, their contents should stay good for two years or more. Be aware, however, of dented cans or those with swollen tops, which may indicate the presence of bacteria inside.1. Which can go bad faster if stored with onions?A. Potatoes.B. Tea.C. Peanuts.D. Canned fruits and vegetables.2. What is special about tea?A. The flavor of tea can always remain the same.B. Tea leaves are better to be preserved in an open jar.C. Tea leaves should be kept away from the state of being wet.D. The maximum length of time that tea can be stored is 6 months.3. What may shorten the "sell - by” date of canned foods ?A. Shapes of cans.B. Categories of foods.C. Decline of the temperature.D. Exposure to high temperature.BThe common use of Google Maps, a navigation(导航) app on smartphones, raises the age-old question we meet with any technology:What skills are we losing? But also, crucially: What capabilities are we gaining?People who are good at finding their way around or good at using paper maps usually experience lots of confusion with digital maps. For example, they may mess up the direction of north and south, and you can see only a small section at a time. But consider what digital navigation aids have meant for someone like me. Despite being a frequent traveler, I’m so terrible at finding my way that I still use Google Maps almost every day in the small town where I have lived for many years. What seems unnecessary to some has been a significant expansion of my own capabilities.Part of the problem is that reading paper maps requires a specific skill set. There is nothing natural about them. In many developed nations, street names and house numbers are meaningful, and instructions such as “go north for three blocks and then west” usually make sense. In Istanbul, in contrast, where I grew up, none of those hold true. For one thing, the locals rarely use street names, and house numbers often aren’tsequentialeither because after buildings 1, 2 and 3 were built, someone squeezed in another house between 1 and 2, and now that’s 4. But then 5 will maybe get built after 3, and 6 will be between 2 and 3. Besides, the city is full of winding and ancient streets that meet with newer ones. Therefore, instructions as simple as “go north” would require a helicopter. I got lost all the time.But since I used Google Maps, I travel with a lot more confidence, and my world has opened up. And because I go to more places more confidently, I believe my native navigation skills have somewhat improved, too.That brings me back to my original question: while we often lose some skills after seeking convenience from technology, this new setup may also allow us to expand our capabilities and do something more confidently. Maybe when technology closes a door, we should also look for the doors it opens.4. How does the author feel about Google Maps?A Confusing. B. Unnecessary. C. Complicated. D. Helpful.5. Which contributes to the difficulty of finding ways in Istanbul?A. Strange street names.B. Ordinary paper maps.C. Complex road arrangements.D. Lack of road instructions.6. What does the underlined word “sequential” in Paragraph 3 probably mean?A. In a fixed order.B. In good condition.C. Of great importance.D. Of the same kind.7. What column of a newspaper may this passage belong to?A. Fashion.B. Opinion.C. Society.D. Geography.CThere is nothing ordinary about this little boy's adorable experience with his musical heroes.5-year-old Taylor Hooper was just one of the 35,0000people who were attending the Foo Fighters concert in Belfast, Norther Ireland last week. Not only is the American rock group his favorite band, it was also his first ever concert.Taylor's mother, Nikki Hooper, says that she and her husband have always been huge fans of the Foo Fighters. In addition to traveling far and wide to see their shows, they even named their son after the drummer, Taylor Hawkins. So when the band played in their home city, they decided it was finally time for their son to see their beloved rock and rockers in concert.“He's been listening to them since he was born — mainly because his dad and I are super fans.” Mrs Hooper told BBC. “We called the event organizers and they said it would be no problem, but that we should know it would be a loud music event, so we gotTaylorsome special headphones. When we got there everyone was so welcoming to him.”Throughout the show, the audience continuously madeTaylorand his parents move closer to the stage. Furthermore, Mrs. Hooper helped her son stand out from the crowd by making him a sign that said he was a 5-year-old attending his first concert.When Foo Fighters front man Dave Grohl finally saw the sign and read it aloud into the microphone, the crowd began chanting for them to bring the youngster onto the stage. That's exactly what he did. When the stage managers brought the boy to the stage, Grohl asked Taylor to show the crowd how to dance.The small boy then danced to the whole song, making him an “Inter net wonder”.Taylordidn't just walk away from the show with memories, either;the band also invited him backstage to give him a number of gifts, including a pair of Taylor Hawkins's drumsticks.8. What is Foo Fighters in the passage?A. I's a music show.B. It's a music band.C. It's a pop song.D. It's a music fan.9. We can learn from Paragraph 3 that_______.A. the organizers refused to let the child watch the showB. there was nothing wrong for the child to watch the showC. the organizers suggested the kid take care of the loud noiseD. the child felt so scared that he didn't want to go to the stage10. How did 5-year-old Taylor Hooper cause people's attention?A. By shouting loudly.B. By running to the singers.C. By holding a sign showing his age.D. By dancing to the whole song.11. How didTaylorfeel about his first ever concert?A. Worried.B. Scared.C. Sorry.D. Pleased.DCigarettes aren’t just harmful when they’re being smoked. Even when cigarette ends go out and are cold, new research has found they continue to give off harmful chemicals in the air. In the first 24 hours alone, scientists say a used cigarette end will produce 14 percent of the nicotine (尼古丁) that an actively burning cigarette would produce.While most of these chemicals are released within a day of being put out,an analysis for the United States Food and Drug Administration (FDA) found the level of nicotine fell by just 50% five days later.“I was ly surprised,” since environmental engineer Dustin Poppendieck from the United States National Institute of Standards and Technology (NIST). “The numbers are significant and could have important impacts when cigarette ends are dealt with indoors or in cars. While much attention has been paid to the health influence of first-hand, second-hand and now third-hand smoking, it is not the case when it comes to the actual cigarette end of the matter.”To measure emissions (排放) from this forgotten thing, Poppendieck and his team placed 2,100 cigarettes that were recently put out inside a special room. Once the ends weresealed away, the team measured eight chemicals commonly produced by cigarettes, four of which the FDA have their eye on for being harmful or potentially so.After setting the room’s temperature, the researchers tested how emissions changed under certainconditions. When the air temperature of the room was higher, for instance, they noticed the ends produced these chemicals at higher rates. This finding might discourage those who want to leave ashtrays (烟灰缸) out for days ata time, especially in the heat.12. What do the researchers say about cigarette ends?A They contain little nicotine.B. They produce no nicotine five days later.C. They give off nicotine for days.D. They create as much nicotine as burning cigarettes.13. What do Poppendieck’s words suggest?A. First-hand smoking does most harm.B. The findings are within his expectation.C. Cigarettes should be dealt with indoors.D. Health influence of cigarette ends is ignored.14. Which word best describes the author’s attitude to not cleaning ashtrays for days?A. Unclear.B. Disapproving.C. Unconcerned.D. Puzzled.15. What can be the best title for the text?A. Used Cigarette Ends Release Harmful ChemicalsB. Cigarettes Are More Harmful While Being SmokedC. Research Found Reasons For Cigarette Ends’ HarmD. Cigarette Ends Produce More Chemicals in the Heat第二节(共5小题;每小题2分,满分10分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。

河北省石家庄市正中实验学校2024-2025学年高三上学期第一次月考英语试卷(含答案))

河北正中实验中学高三上学期第一次月考英语(总分:150分考试时间:120分钟)注意事项:1. 答卷前,考生务必将自己的姓名、准考证号填写在本试卷和答题卡相应位置。

2. 回答选择题时,选出每小题答案后,用铅笔将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,回答非选择题时,将答案书写在答题卡上,写在本试卷上无效。

3. 考试结束后,将答题卡和试卷交回。

第一部分,听力(共两节,满分30分)做题时,先将答案标在试卷上。

录音内容结束后,你将有两分钟的时间将试卷上的答案转涂到答题纸上。

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。

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。

例: How much is the shirt?A. £19.15.B. £9.18.C. £9.15.答案是C。

1. What is Kate doing?A. Boarding a flight.B. Arranging a trip.C. Seeing a friend off.2. What are the speakers talking about?A. A pop star.B. An old song.C. A radio program.3. What will the speakers do today?A Go to an art show. B. Meet the man's aunt. C. Eat out with Mark.4. What does the man want to do?A. Cancel an order.B. Ask for a receipt.C. Reschedule a delivery.5. When will the next train to Bedford leave?A. At 9:45.B. At 10:15.C. At 11:00.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。

山东省实验中学2017-2018学年高三上学期第一次诊断测试数学(文)试卷 Word版含答案

山东省实验中学2017-2018学年高三上学期第一次诊断测试文科数学试题一、选择题(本大题共10小题,每小题5分,共50分.在每小题给出的四个选项中,只有一项是符合题目要求的.)1、已知i 为虚数单位,若复数z 满足()20152016z i i ⋅-=+,则z 为( )A .20152016i + B .20152016i - C .20162015i -+ D .20162015i -- 2、已知全集{}U 1,2,3,4,5=,集合{}1,2,3A =,{}2,4B =,则()U A B ð为( ) A .{}1,2,4 B .{}2,3,4 C .{}2,4,5 D .{}2,3,4,53、函数()f x =的定义域为( )A .[)(]2,00,2-B .()(]1,00,2-C .[]2,2-D .(]1,2- 4、在某次测量中得到的A 样本数据如下:582,584,584,586,586,586,588,588,588,588.若B 样本数据恰好是A 样本数据都加20后所得数据,则A ,B 两样本的下列数字特征对应相同的是( )A .众数B .平均数C .中位数D .标准差5、设:p 函数2sin 2y x π⎛⎫=+ ⎪⎝⎭是奇函数;:q 函数cos y x =的图象关于直线2x π=对称.则下列判断正确的是( )A .p 为真B .q ⌝为假C .p q ∧为假D .p q ∨为真6、若实数x ,y 满足1000x y x y x -+≥⎧⎪+≥⎨⎪≤⎩,则目标函数2z x y =+的取值范围是( )A .[]0,2B .[]0,1C .[]1,2D .[]2,1- 7、执行如图所示的程序框图,则输出的S 值为( ) A .4 B .6 C .8 D .168、设函数()1ln 3f x x x =-(0x >),则函数()f x ()A .在区间()0,1,()1,+∞内均有零点B .在区间()0,1,()1,+∞内均有零点C .在区间()0,1内有零点,在区间()1,+∞内无零点D .在区间()0,1内无零点,在区间()1,+∞内有零点 9、函数cos 622x xxy -=-的图象大致为( )A .B .C .D .10、若()f x 是定义在R 上的函数,对任意的实数x ,都有()()44f x f x +≤+,且()()22f x f x +≥+,若()34f =,则()2015f 的值是( )A .2014 B .2015 C .2016 D .2017二、填空题(本大题共5小题,每小题5分,共25分.) 11、如图,正方体1111CD C D AB -A B 的棱长为1,E 为线段1C B 上的一点,则三棱锥1D D A -E 的体积为 . 12、已知数列{}n a 的前n 项和21n S n n =++,则89101112a a a a a ++++= .13、()()sin f x x ωϕ=A +(A ,ω,ϕ为常数,0A >,0ω>,0ϕπ<<)的图象如图所示,则3f π⎛⎫⎪⎝⎭的值为 .14、已知m 、n 为正实数,向量(),1a m =,()1,1b n =-,若//a b ,则12m n+的最小值为 .15、已知双曲线1C :22221x y a b-=(0a >,0b >)的离心率为2,若抛物线2C :22x py =(0p >)的焦点到双曲线1C 的渐近线的距离为2,则p = . 三、解答题(本大题共6小题,共75分.解答应写出文字说明、证明过程或演算步骤.) 16、(本小题满分12分)在C ∆AB 中,a ,b ,c 分别是角A ,B ,C 的对边,且cosC cos 2cos b c a +B =B .()I 求角B 的大小;()II 若函数()()()2sin 2sin 22cos 1f x x x x =+B +-B +-,R x ∈. ()1求函数()f x 的最小正周期; ()2求函数()f x 在区间,44ππ⎡⎤-⎢⎥⎣⎦上的最大值和最小值.17、(本小题满分12分)山东省济南市为了共享优质教育资源,实现名师交流,甲、乙两校各有3名教师报名交流,其中甲校2男1女,乙校1男2女.()I 若从甲校和乙校报名的教师中各任选1名,写出所有可能的结果,并求选出的2名教师性别相同的概率;()II 若从报名的6名教师中任选2名,写出所有可能的结果,并求选出的2名教师来自同一学校的概率.18、(本小题满分12分)如图,在四棱锥CD P -AB 中,D P ⊥平面CD AB ,D DC C 1P ==B =,2BA =,//DC AB ,CD 90∠B =,点E 、F 、G 分别是线段AB 、C P 、D E 的中点.()I 求证:FG//平面PAB ;()II 求证:DF ⊥平面C PB .19、(本小题满分12分)已知n S 为等差数列{}n a 的前n 项和,2716a a +=,10100S =.()I 求数列{}n a 的通项公式; ()II 若数列{}n b 满足:122n a n n b a -=⋅,求数列{}n b 的前n 项和n T .20、(本小题满分13分)如图,椭圆:M 22221x y a b+=(0a b >>)的离心率为12,直线x a =±和y b =±所围成的矩形CD AB 的面积为.()I 求椭圆M 的标准方程;()II 若P 为椭圆M 上任意一点,O 为坐标原点,Q 为线段OP的中点,求点Q 的轨迹方程;()III 已知()1,0N ,若过点N 的直线l 交点Q 的轨迹于E ,F两点,且1812F 75-≤NE⋅N ≤-,求直线l 的斜率的取值范围.21、(本小题满分14分)已知函数()21ln 22f x ax x =--,R a ∈. ()I 当1a =时,求曲线()y f x =在点()()1,1f 处的切线的斜率;()II 讨论函数()f x 的单调性;()III 若函数()f x 有两个零点,求实数a 的取值范围.山东省实验中学2016届高三上学期第一次诊断测试文科数学试题参考答案一、选择题:1-10 DCBDC ACDDC 二、填空题:11.1612.100 13.1 14. 3+ 15.8 三、解答题16.解:(Ⅰ) cos cos 2cos b C c B a B +=,由射影定理,得2cos a a B =1cos .23B B π∴=∴=……………4分或边化角,由cos cos 2cos b C c B a B +=,变为B A B C C B cos sin 2cos sin cos sin =+,即B A A cos sin 2sin = 1cos .23B B π∴=∴=(Ⅱ)由(Ⅰ)知3B π=,所以2()=sin (2+)+sin(2)+2cos 133f x x x x ππ--=sin 2cos cos 2sin sin 2cos cos 2sin cos 23333x x x x x ππππ++-+sin 2cos 2)4x x x π=+=+……………7分(1)()f x 的最小正周期22T ππ==.……………8分(2)3[,],2[,],2[,]4422444x x x πππππππ∈-∴∈-+∈-,sin(2)[42x π+∈-所以,())[4f x x π=+∈-……………10分故max min ()() 1.f x f x ==-……………12分17.(I) 从甲校和乙校报名的教师中各任选1名,所有可能的结果为(甲男1,乙男)、(甲男2, 乙男)、(甲男1, 乙女1)、(甲男1, 乙女2)、(甲男2, 乙女1)、(甲男2, 乙女2)、(甲女, 乙女1)、(甲女, 乙女2) 、(甲女, 乙男),共9种;…………………4分选出的2名教师性别相同的结果有(甲男1,乙男)、(甲男2, 乙男)、(甲女1, 乙女1)、(甲女1, 乙女2),共4种,所以选出的2名教师性别相同的概率为49. ……………………6分 (II )从报名的6名教师中任选2名,所有可能的结果为(甲男1,乙男)、(甲男2, 乙男)、(甲男1, 乙女1)、(甲男1, 乙女2)、(甲男2, 乙女1)、(甲男2, 乙女2)、(甲女, 乙女1)、(甲女, 乙女2) 、(甲女, 乙男) 、(甲男1, 甲男2)、(甲男1, 甲女)、(甲男2, 甲女)、(乙男, 乙女1)、(乙男, 乙女2)、(乙女1, 乙女2),共15种;………………………10分选出的2名教师来自同一学校的所有可能的结果为(甲男1, 甲男2)、(甲男1, 甲女)、(甲男2, 甲女)、(乙男, 乙女1)、(乙男, 乙女2)、(乙女1, 乙女2),共6种,所以选出的2名教师来自同一学校的概率为62155=. ………………………12分 18.(I )因为DC=1,BA=2,AB ∥DC , E 是线段AB 的中点, 所以AE ∥DC ,且AE=DC ,所以四边形AECD 为平行四边形。

长春市十一高、东北师范大学附属中学、吉林一中重庆一中等五校2018届高三1月考试语文试题+Word版含答案

2018届高三联合模拟考试语文试题东北师范大学附属中学重庆一中长春十一高中吉林一中松原实验中学注意事项:1.本试卷满分150分,考试时间150分钟;2.请在答题卡的指定位置上填写姓名、考号,并将条形码贴在相应位置;3.请将选择题答案填涂在答题卡相应位置,非选择题答案填写在答题卡上;4.请仔细审题,认真做答。

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

冬至是中国农历中极其重要的一个节气。

观察冬至日是人类文明史早期极为重要的活动,冬至日的测定缘自太阳与地球、人身的关系。

《周礼》有云:“树八尺之表,夏至日,景长尺有五寸;冬至日,景长一丈三尺五寸。

”木杆、竹竿、土圭,以八尺为标准,其实就是以人的八尺身高为参照。

人在夏天的时候会看到自己的影子越来越短,在冬天的时候看到自己的影子越来越长,每次最短的日子即是冬至。

在大时间序列里,冬至是乾卦时空和复卦时空的交汇点。

坤卦时空的要义在于厚德载物,复卦时空则是一阳来复,见天地之心。

《易经》记载,先王以至日闭关,商旅不行,后不省方。

先王们会顺应天时,修道养身,不去省视四方之事,此时关口会关闭,百姓会休息,工商旅客不远出。

冬至日处于岁末,是历法推算的重要观测点。

我国的殷周时期,规定冬至前一天为岁终之日,至节相当于春节,周代以冬十一月为正月,以冬至为岁首过新年。

后来苗族的历法则把冬至当作新年。

直到现在一些少数民族仍有“冬至大如年”的说法,而中原地带从周代起官民都会有祭祀活动。

皇帝向文武百官颁发或馈赠历书也多在冬至日进行,其做法类似于今天人们送日历、挂历习俗。

汉代以冬至为“冬节”,官府要举行“贺冬”仪式,官方例行放假,官场流行互贺的“拜冬”礼俗。

冬至节的祭拜活动有很多,主要有祭祖、拜父母、拜师等。

对农民来说,冬至节气算得上农闲时节,主要农事如积农家肥,做好防冻工作,并不算劳累。

王朝时代的统治者会抓住这一时机,动员民众做一些大型工程,如兴修水利。

松原市实验高级中学2018-2019学年高三上学期第三次月考试卷数学含答案

松原市实验高级中学2018-2019学年高三上学期第三次月考试卷数学含答案 班级__________ 座号_____ 姓名__________ 分数__________一、选择题(本大题共12小题,每小题5分,共60分.每小题给出的四个选项中,只有一项是符合题目要求的.)1. 已知函数()cos()3f x x π=+,则要得到其导函数'()y f x =的图象,只需将函数()y f x =的图象( )A .向右平移2π个单位 B .向左平移2π个单位 C. 向右平移23π个单位 D .左平移23π个单位2. “互联网+”时代,倡导读书称为一种生活方式,调查机构为了解某小区老、中、青三个年龄阶段的阅读情况,拟采用分层抽样的方法从该小区三个年龄阶段的人群中抽取一个容量为50的样本进行调 查,已知该小区有老年人600人,中年人600人,青年人800人,则应从青年人抽取的人数为( ) A .10 B .20 C .30 D .40 3. 如图所示,网格纸表示边长为1的正方形,粗实线画出的是某几何体的三视图,则该几何体的表面积为( )A .15B .C .15D .15【命题意图】本题考查三视图和几何体体积等基础知识,意在考查空间想象能力和基本运算能力. 4. 若函数1,0,()(2),0,x x f x f x x +≥⎧=⎨+<⎩则(3)f -的值为( )A .5B .1-C .7-D .25. 实数x ,y 满足不等式组,则下列点中不能使u=2x+y 取得最大值的是( )A .(1,1)B .(0,3)C .(,2)D .(,0)6. 已知全集为R ,集合{}|23A x x x =<->或,{}2,0,2,4B =-,则()R A B =ð( )A .{}2,0,2-B .{}2,2,4-C .{}2,0,3-D .{}0,2,4 7. 某空间几何体的三视图如图所示,则该几何体的体积为( )A .B .8C .D .168. 若直线L :047)1()12(=--+++m y m x m 圆C :25)2()1(22=-+-y x 交于B A ,两点,则弦长||AB 的最小值为( )A .58B .54C .52D .59. 记集合{}22(,)1A x y x y =+?和集合{}(,)1,0,0B x y x y x y =+3?表示的平面区域分别为Ω1,Ω2,若在区域Ω1内任取一点M (x ,y ),则点M 落在区域Ω2内的概率为( ) A .12p B .1p C .2pD .13p【命题意图】本题考查线性规划、古典概型等基础知识,意在考查数形结合思想和基本运算能力. 10.已知圆C 方程为222x y +=,过点(1,1)P -与圆C 相切的直线方程为( )A .20x y -+=B .10x y +-=C .10x y -+=D .20x y ++= 11.若圆226260x y x y +--+=上有且仅有三个点到直线10(ax y a -+=是实数)的距离为, 则a =( )A . 1±B . 4±C .D .12.函数y=a x +2(a >0且a ≠1)图象一定过点( )A .(0,1)B .(0,3)C .(1,0)D .(3,0)二、填空题(本大题共4小题,每小题5分,共20分.把答案填写在横线上)13.曲线y =x 2+3x 在点(-1,-2)处的切线与曲线y =ax +ln x 相切,则a =________. 14.将一张坐标纸折叠一次,使点()0,2与点()4,0重合,且点()7,3与点(),m n 重合,则m n +的 值是 .15.已知a 、b 、c 分别是ABC ∆三内角A B C 、、的对应的三边,若C a A c cos sin -=,则3s i n c o s ()4A B π-+的取值范围是___________. 【命题意图】本题考查正弦定理、三角函数的性质,意在考查三角变换能力、逻辑思维能力、运算求解能力、转化思想.16.已知1sin cos 3αα+=,(0,)απ∈,则sin cos 7sin 12ααπ-的值为 .三、解答题(本大共6小题,共70分。

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2018届吉林省实验中学高三上学期第六次月考英语试题 考生注意 1.本试卷共150分。考试时间120分钟 2.请将各题答案填涂在答题卡上 3.本试卷主要考试内容:高考内容。 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。 例: How much is the shirt? A.£19.15 B.£9.18 C.£9.15 答案是C 1. Where does the conversation probably take place? A. In a restaurant. B. In a clothes store. C. In a hotel. 2. What is the possible relationship between the speakers? A. Employer and employee. B. Next door neighbors. C. Two good friends. 3. What time will the woman leave? A. At 11: 00 tonight. B. At 6: 10 tomorrow morning. C. At 11: 00 tomorrow morning. 4. What will the woman do for the man? A. Get him some fruit. B. Wash his clothes. C. Take him to the supermarket. 5. What will the speakers most probably do this weekend? A. See a film. B. Climb a mountain. C. Play table tennis. 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,并标在试卷的相应的位置。听每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。每段对话或独白读两遍。 请听第6段材料,回答第6、7题。 6. When did the man reserve the room? A. On October 8th. B. On October 15th. C. On October 22nd. 7. How does the man want to pay? A. In cash. B. By travelers check. C. By credit card. 听第7段材料,回答第8、9题。 8. Why does the man take evening classes? A. To kill his free time. B. To prepare for a new job. C. To get qualified for his present job. 9. Which of the following is the most important part to the man? A. The classmates. B. The teachers. C. The course itself. 听第8段材料,回答第10至12题。 10. What will the woman do on the afternoon of April 7th? A. See a play. B. Watch TV C. Go to children's Club. 11. How many tickets does the woman want? A. 2 B. 3 C. 5 12. What will the woman probably do next? A. Make a call. B. Go to get the tickets. C. Collect information about Cinderella. 听第9段材料,回答第13至16题。 13. What is the man most probably? A. A shopkeeper. B. A shopping guide. C. A university student. 14. Where does the conversation most probably take place? A. At a supermarket. B. At a university. C. At the woman's house. 15. Why does the woman always shop at the supermarket? A. The price is reasonable. B. There are fewer people. C. It is near her home. 16. What do we know about the woman? A. She works five days a week. B. She always goes shopping alone. C. She thinks shopping online inconvenient. 听第10段材料,回答第17至20题。 7. What is Jack Brown? A. An information officer B. A production manager. C. A marketing manager. 18. What will the listeners do with Matthew Durston next? A. Have lunch. B. Watch a video. C. Visit the Production area. 19. Who is the marketing manager? A. Jack Brown. B. John White. C. Matthew Durston. 20. Where will the listeners meet at 7: 15 pm? A. In a company. B. In a restaurant C. In a hotel. 第二部分:阅读理解(共两节,40分) 第一节 (共15小题;每小题2分,共30分) 阅读下面短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。 A From The 12 Days of Christmas to See You in the Cosmos, these children‟s books are ideal for holiday giving. The 12 Days of Christmas by Greg Pizzoli it's a classic Christmas reading material! It's a counting lesson! It's a crazy tale of elephant love. Have you ever wondered how all those calling birds, turtle doves and French hens fit in one room? Pizzoli, a Theodor Seuss Geisel Award winner has your answer. ($15.99, ages 3-5) Amazon. com Here We Are by Oliver Jeffers Yes, this book by the illustrator(插画家) of the great hit“ The Day the Crayons Quit”is for kids ages 3-7, but don't let that fool you. Inspired by the birth of Jeffers first child, this is a fathers "welcome to the earth" letter to his baby, filled with the heady wonder of parenthood. A great gift for new parents. ($19.99, ages 3-7) Amazon. com Wishtree by Katherine Applegate, illustrated by Charles Santoso. When a towering oak tree learns that she may be cut down, she starts getting extraordinarily involved in the lives of the humans below her, particularly a girl who is being escaped due to her ethnicity (种族). A lovely tale

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