必修4综合练习卷1及答案

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人教版高中英语选择性必修第四册综合测试题含答案

人教版高中英语选择性必修第四册综合测试题含答案

选择性必修第四册综合测试题(满分:120分建议用时:120分钟)第一部分阅读(共两节,满分50分)第一节(共15小题;每小题2.5分,满分37.5分)AUrban gardens are valuable assets to communities.They provide green spaces to grow sustainable food,build community cohesion(凝聚力),make new friends,connect with the earth,and much more.So,let’s check out our list of 4 inspiring urban gardens in the US.Gotham GreensWhere: New York & ChicagoWhat: Gotham Greens first started in Brooklyn and now has four locations in New York City and Chicago.Their flagship farm in Brooklyn produces over 100,000 pounds of greens per year.But it doesn’t just produce healthy local vegetables.It is using high-tech greenhouses with solar panels to make sure the food grown is healthy and sustainable.Baltimore Urban Gardening with StudentsWhere: Baltimore,MarylandWhat:The Baltimore Urban Gardening with Students(BUGS) program encourages students to get their hands dirty and plant vegetables through their after-school and summer programs.Many of these kids don’t have access to green spaces,and have never had the opportunity to grow food.ReVision Urban FarmWhere: Boston,MassachusettsWhat: ReVision Urban Farm in Boston works in partnership with the ReVision Family Home — a shelter for 22 homeless parents and their kids.The farm provides these families with information on healthy eating,and access to the farm’s fresh vegetables.The organisation also provides job training to help families escape the cycle of poverty.SwaleWhere: New YorkWhat: Swale,a floating food forest located on a large boat,is an innovative project meant to inspire citizens to rethink the relationship between our cities and our food.This urban garden servesas both a living art exhibit and an educational farm.Food forests are sustainable gardens that include vegetables,fruit,nut trees,bushes,herbs,and vines — each one complementing the other in a symbiotic(共生的) relationship.()1.What does the BUGS program mainly do?A.Provide job training for students.B.Use high-tech greenhouses to grow healthy food.C.Create a sustainable garden on a large boat.D.Offer students the opportunity to grow vegetables.()2.Which urban garden helps people get out of poverty?A.Gotham Greens.B.Swale.C.ReVision Urban Farm.D.Baltimore Urban Gardening with Students.()3.Where can citizens go to see a food forest?A.Chicago.B.Baltimore.C.Boston.D.New York.【语篇解读】本文是一篇应用文。

必修四综合测试及答案

必修四综合测试及答案

必修四综合测试题制作人:徐倩审核人:刘文红使用时间:2012-6-2本试卷满分150分,答题时间为150分钟。

一、(15分,每小题3分)1.下列词语中,加点字的读音全都正确的一组是【】A.千骑.(qí)埋.怨(mán)罪愆.(qiān)荒阡古陌.(pò)B.半晌.(shǎng)打量.(liang)脚镣.(liào)繁文缛.节(rù)C.天堑.(qiàn)提.防(tí)羌.管(qiáng)户盈罗绮.(qí)D.巷.道(hàng)华.发(huá)料峭.(shāo)羽扇纶.巾(guān)2.下列各组词语中,没有错别字的一组是【】A.市刽寻觅查无音信前合后偃B.缜密惊愕惊慌失措无语凝噎C.藩属缔听万恶不赦阿谀献媚D.故垒萧瑟良辰美景抗旱三年3.依次填入下面横线处的词语,最恰当的一项是【】人可以选择居地,没法选择生命之源,即使这里有许多你无法忍受的东西,即使这块土地被太多的人口和灾难压榨得疲惫不堪气喘吁吁。

你没法重新选择父辈,他们的脸上着你的容貌,身上出你熟悉的气息。

也许更重要的是,这里到处隐伏和流动着你的中文,你的心灵之血。

你曾经用这种语言说过最动情的心事,最欢乐和最心酸的体验,最聪明和最幼稚的见解,你就再也不可能与它分离。

A.因为隐藏流露只要B.因为刻画流露如果C.但是刻画散发只要D.但是隐藏散发如果4、下列各句中加点的词语使用不恰当的一句是【】A.偏激而善良的言论,对于利用舆论监督,改进社会治理绩效而言,一定意义上也可以看作“苦口良药....”。

B.斯诺的其他著作都不可和《西行漫记》相提并论,即使是杰出的报告文学,在事过境迁之后,往往成为明日黄花....。

C.这些个矛盾心态,显现出马英九以一个“外省族群”者的身份在台湾政坛立足的困难性,使得他在政治考量方面多了一份顾忌和如履薄冰....的心情。

高中综合测试一含解析必修4 试题(共17页)

高中综合测试一含解析必修4 试题(共17页)

综合测试一(测试(cèshì)时间是:150分钟评价分值:150分)一、现代文阅读(35分)(一)阐述类文本阅读(一共3小题,9分)阅读下面的文字,完成1~3题。

近些年,“文化创新〞已经成了流行词汇。

所谓文化创新,其实并不在于创造一些新口号、新提法,关键是要能针对时下所面临的问题,探寻出解决问题的新途径、新方法。

所以,在考虑如何进展文化创新时,首先应考虑我们当前遇到了什么问题。

从国际社会经历讲,当人均国民消费总值到达 3 000美元,即人们有了较好的物质生活条件之后,会有强烈的精神生活的需求,此时社会容易爆发HY危机。

据2021年的数据统计,我国人均国民消费总值已达 6 767美元,经济进入了飞速开展的快车道,与此同时,人们的精神HY领域也问题重重。

这是我们进展文化创新的时代背景。

毋庸置疑,当下人们HY领域出现的种种问题,与传统的断裂有直接的关系。

因此,文化创新就必须重新考虑与传统文化的关系问题。

放眼全球,每个国家和民族都有自己的文化,法国有法兰西民族的文化,德国有日耳曼民族的文化,各民族文化都沿着各自的传统开展。

法国不会放弃自己的文化传统而完全承受德国文化,反之亦然。

这本是文化开展的一个常识。

但是近代以来,中国主张放弃本民族传统文化的权力非常强大,这无异于摧毁自己的精神长城。

其实,文化创新决不能摒弃本国的文化传统,相反,文化创新恰恰应该以继承优秀的传统文化为根本前提。

那么,怎样才能实现文化创新与文化传承的统一?为此,需要从制度上解决文化传承与创新的“源头活水〞问题。

这里所说的“源头活水〞有两层意思:一是作为“源头活水〞的“中华元典〞,那就是要重视中华民族历史上那些最根本的文化经典,比方“五经〞“四书〞等。

“中华元典〞是中华民族价值观的载体,是中国文化的根脉,其对于一个民族的存续至关重要,正如古语所说:“叶断犹可将,根断心永绝。

〞但对于这一根脉,我们向来是不太重视的。

20世纪初曾经积极倡导政治革新的梁启超对此深以为忧,他说:“今日非西学不兴之为患,而中学将亡之为患。

必修四全册综合测试卷(一)(含解析)

必修四全册综合测试卷(一)(含解析)

必修四全册综合测试卷(一)【人教A 版】考试时间:100分钟;满分:150分学校:___________姓名:___________班级:___________考号:___________注意事项:1.答题前填写好自己的姓名、班级、考号等信息2.请将答案正确填写在答题卡上第Ⅰ卷(选择题)一.选择题(共12小题,满分60分,每小题5分)1.(5分)(2019•余杭区校级模拟)已知3()sin()tan()2f παπαα=--,则31()3f π-的值为( )A .12-B .12C D . 2.(5分)(2019秋•浦东新区期末)若(5,4)OA =-,(7,9)OB =,向量AB 同向的单位向量坐标是( ) A .125(,)1313-- B .125(,)1313 C .125(,)1313-D .125(,)1313- 3.(5分)(2019秋•耀州区校级期中)两个非零向量1e ,2e 不共线,若1212()//()ke e e ke ++,则实数k 的值为( ) A .1B .1-C .1±D .04.(5分)(2019•封开县校级模拟)已知A ,B ,C 为平面上不共线的三点,若向量(1,1)AB =,(1,1)n =-,且2n AC =,则n BC 等于( ) A .2-B .2C .0D .2或2-5.(5分)(2019春•大连校级期中)函数()sin()(0)3f x x πωω=+>的图象的相邻两条对称轴间的距离是2π.若将函数()f x 的图象向右平移6π个单位,再把图象上每个点的横坐标缩小为原来的一半,得到()g x ,则()g x 的解析式为( )A .()sin(4)6g x x π=+B .()sin(8)3g x x π=-C .()sin()6g x x π=+D .()sin 4g x x =6.(5分)(2019秋•新华区校级月考)已知sin cos 1x x +=-,则33sin cos x x +的值为( ) A .0B .1C .1-D .1±7.(5分)(2019秋•舒城县期末)已知向量(2cos ,2sin )a ϕϕ=,(2πϕ∈,)π,(0,1)b =-,则向量a 与b的夹角为( ) A .32πϕ- B .2πϕ+ C .2πϕ-D .ϕ8.(5分)(2019春•会宁县期末)已知函数()sin()(0f x A x A ωϕ=+>,0ω>,2πϕ≤的部分图象如图所示,则函数()y f x =的表达式是( )A .()2sin(2)3f x x π=-B .()2sin(2)3f x x π=+C .2()2sin(2)3f x x π=+D .()2sin()12f x x π=+9.(5分)(2019秋•海淀区校级期末)同时具有性质“①最小正周期为π;②图象关于直线3x π=对称;③在[6π,]3π上是增函数”的一个函数是( )A .sin()23x y π=-B .cos(2)6y x π=+C .sin(2)6y x π=-D .2cos(2)3y x π=+10.(5分)(2019秋•凯里市校级期末)如图,在ABC ∆中,AD 、BE 、CF 分别是BC 、CA 、AB 上的中线,它们交于点G ,则下列各等式中不正确的是( )A .23BG BE =B .2CG GF =C .12DG AG =D .0GA GB GC ++=11.(5分)(2019秋•吕梁期中)函数()2cos()(0f x x ωϕω=+>,0)ϕπ<<为奇函数,该函数的部分图象如图所示,点A 、B 分别为该部分图象的最高点与最低点,且这两点间的距离为()f x 图象的一个对称中心为( )A .(4,0)B .(2π,0) C .(4π,0) D .(2,0)12.(5分)(2019•朝阳区模拟)如图,边长为1的正方形ABCD 的顶点A ,D 分别在x 轴、y 轴正半轴上移动,则OB OC 的最大值是( )A .2B .1C .πD .4第Ⅱ卷(非选择题)二.填空题(共4小题,满分20分,每小题5分) 13.(5分)(2018•凌源市模拟)sin 47sin17cos30cos17︒-︒︒︒的值等于 .14.(5分)(2019秋•凯里市校级期末)已知||3a =,||5b =,12a b =,则a 在b 方向上的投影为 . 15.(5分)(2019春•高密市校级月考)已知2cos 3a =,且02a π-<<,tan()sin(2)cos()tan()a a a a πππ--+-+的值 .16.(5分)(2019春•小店区校级月考)设函数()3sin(2)3f x x π=-的图象为C ,给出下列命题:①图象C 关于直线1112x π=对称; ②函数()f x 在区间5(,)1212ππ-内是增函数; ③函数()f x 是奇函数; ④图象C 关于点(,0)3π对称.⑤|()|f x 的周期为π其中,正确命题的编号是 .(写出所有正确命题的编号)三.解答题(共6小题,满分70分)17.(10分)(2018秋•渝中区校级期末)已知(,),sin 2cos 2παπαα∈=-(1)求222sin 1cos αα+的值;(2)求3cos(2)4πα-的值.18.(12分)(2019秋•凯里市校级期末)已知向量(3cos ,1)αα=,(2,3sin )b α=-,且b α⊥,其中(0,)2πα∈(1)求sin α和cos α的值;(2)若5sin()αββ+=,(0,)βπ∈,求角β的值.19.(12分)(2019秋•东城区期末)已知函数()2sin(2)13f x x π=++.(Ⅰ)当43x π=时,求()f x 值;(Ⅱ)若存在区间[a ,](b a ,b R ∈且)a b <,使得()y f x =在[a ,]b 上至少含有6个零点,在满足上述条件的[a ,]b 中,求b a -的最小值.20.(12分)(2019秋•瑞安市校级月考)设向量(3sin m = 2x ,sin cos x + )x ,(1n =,sin cos x -)x ,其中x R ∈,函数()f x m n =.(1)求()f x 的最小正周期及单调递增区间;(2)若()f θ=,其中02πθ<<,求θ的值.21.(12分)已知向量3(cos2x a =,3sin )2x ,(cos 2x b =,sin )2x -,且[0x ∈,]2π.(1)求a b 及||a b +;(2)若()2||f x a b a b λ=-+的最小值为7-,求实数λ的值.22.(12分)(2019春•德惠市月考)已知向量(sin ,1),(3cos ,cos2)(0)2Am x n A x x A ==>,函数()f x m n =的最大值为6.(1)求A 的值及函数图象的对称轴方程和对称中心坐标; (2)将函数()y f x =的图象向左平移12π个单位,再将所得的图象上各点的横坐标缩短为原来的12倍,纵坐标不变,得到函数()y g x =的图象,求()g x 在5[0,]24π上的值域.必修四全册综合测试卷(一)参考答案与试题解析一.选择题(共12小题,满分60分,每小题5分)1.(5分)(2019•余杭区校级模拟)已知3()sin()tan()2f παπαα=--,则31()3f π-的值为( )A .12-B .12C D . 【分析】由条件利用同角三角函数的基本关系、诱导公式可得()cos f αα=,从而利用诱导公式求得31()3f π-的值. 【答案】解:3()sin()tan()sin cot cos 2f παπααααα=--==, 则31311()cos()cos(10)cos()cos 333332f ππππππ-=-=--=-==, 故选:B .【点睛】本题主要考查同角三角函数的基本关系、诱导公式的应用,以及三角函数在各个象限中的符号,属于基础题.2.(5分)(2019秋•浦东新区期末)若(5,4)OA =-,(7,9)OB =,向量AB 同向的单位向量坐标是( ) A .125(,)1313-- B .125(,)1313 C .125(,)1313-D .125(,)1313- 【分析】求出向量AB ,然后求出模,即可推出单位向量. 【答案】解:(5,4)OA =-,(7,9)OB =,向量(12,5)AB =. ||1213AB ==.向量AB 同向的单位向量坐标是:1125(12,5)(,)131313=. 故选:B .【点睛】本题考查向量的运算法则,坐标运算,单位向量的求法,考查计算能力.3.(5分)(2019秋•耀州区校级期中)两个非零向量1e ,2e 不共线,若1212()//()ke e e ke ++,则实数k 的值为( ) A .1B .1-C .1±D .0【分析】根据两个向量平行的关系,写出两个向量共线的充要条件,整理出关于k 和λ的关系式,把λ用k 表示,得到关于k 的方程,解方程组即可. 【答案】解:1212()//()ke e e ke ++, 1212()ke e e ke λ∴+=+, 1212ke e e ke λλ∴+=+,k λ∴=,1k λ=,21k ∴=, 1k =±,故选:C .【点睛】本题考查向量共线的充要条件,是一个基础题,这种题目可以出现在大型考试的选择和填空中,若出现是一个送分题目.4.(5分)(2019•封开县校级模拟)已知A ,B ,C 为平面上不共线的三点,若向量(1,1)AB =,(1,1)n =-,且2n AC =,则n BC 等于( ) A .2-B .2C .0D .2或2-【分析】用向量的运算法则将BC 用AB ,AC 表示,进一步将n BC 求出. 【答案】解:0n AB =,∴()202n BC n AC AB n AC n AB =-=-=-=.故选:B .【点睛】本题考查平面向量基本定理,考查向量的坐标运算.5.(5分)(2019春•大连校级期中)函数()sin()(0)3f x x πωω=+>的图象的相邻两条对称轴间的距离是2π.若将函数()f x 的图象向右平移6π个单位,再把图象上每个点的横坐标缩小为原来的一半,得到()g x ,则()g x 的解析式为( )A .()sin(4)6g x x π=+B .()sin(8)3g x x π=-C .()sin()6g x x π=+D .()sin 4g x x =【分析】利用函数sin()y A x ωϕ=+的图象变换规律,得出结论.【答案】解:函数()sin()(0)3f x x πωω=+>的图象的相邻两条对称轴间的距离是112222T ππω==,2ω∴=. 若将函数()f x 的图象向右平移6π个单位,可得sin[2()]sin 263y x x ππ=-+=的图象, 再把图象上每个点的横坐标缩小为原来的一半,得到()sin 4g x x =的图象, 故选:D .【点睛】本题主要考查函数sin()y A x ωϕ=+的图象变换规律,属于基础题.6.(5分)(2019秋•新华区校级月考)已知sin cos 1x x +=-,则33sin cos x x +的值为( ) A .0B .1C .1-D .1±【分析】由已知求解x ,得到sin x 、cos x 的值,则答案可求. 【答案】解:sin cos 1x x +=-,∴)14x π+=-,即sin()42x π+=, 则244x k πππ+=-或3244x k πππ+=-,k Z ∈. 22x k ππ∴=-或2x k ππ=-,则sin 1x =-,cos 0x =或sin 0x =,cos 1x =-,当sin 1x =-,cos 0x =时,33sin cos 1x x +=-; 当sin 0x =,cos 1x =-时,33sin cos 11x x +=--. 综上,33sin cos x x +的值为1-. 故选:C .【点睛】本题考查三角函数的化简求值,考查两角和与差的正弦函数,象限角、轴线角,是基础题. 7.(5分)(2019秋•舒城县期末)已知向量(2cos ,2sin )a ϕϕ=,(2πϕ∈,)π,(0,1)b =-,则向量a 与b的夹角为( ) A .32πϕ- B .2πϕ+ C .2πϕ-D .ϕ【分析】设向量a 与b 的夹角为θ,[0θ∈,2]π,根据cos sin cos()2||||a b a b πθϕϕ==-=+,求得θ的值.【答案】解:设向量a 与b 的夹角为θ,[0θ∈,2]π,∴向量(2cos ,2sin )a ϕϕ=,(2πϕ∈,)π,(0,1)b =-, 2sin cos sin cos()212||||a b a b ϕπθϕϕ-∴===-=+,结合3(,)22ππϕπ+∈,可得2πθϕ=+,故选:B .【点睛】本题主要考查用两个向量的数量积表示两个向量的夹角,诱导公式的应用,属于中档题. 8.(5分)(2019春•会宁县期末)已知函数()sin()(0f x A x A ωϕ=+>,0ω>,||)2πϕ…的部分图象如图所示,则函数()y f x =的表达式是( )A .()2sin(2)3f x x π=-B .()2sin(2)3f x x π=+C .2()2sin(2)3f x x π=+D .()2sin()12f x x π=+【分析】利用函数的图象,求出A ,得到函数的周期,求出ω,通过点的坐标代入方程,结合ϕ的范围求出ϕ,即可求出函数的解析式. 【答案】解:从图可知2A =,且115212122T πππ=-=,得T π=,故222T ππωπ===, 将点5(,2)12π的坐标代入函数()2sin(2)f x x ϕ=+,且||2πϕ…得3πϕ=-, 所以函数()y f x =的表达式为()2sin(2)3f x x π=-.故选:A .【点睛】本题考查三角函数解析式的求法,考查学生对三角函数图象的理解与应用,考查计算能力推理能力.9.(5分)(2019秋•海淀区校级期末)同时具有性质“①最小正周期为π;②图象关于直线3x π=对称;③在[6π,]3π上是增函数”的一个函数是( )A .sin()23x y π=-B .cos(2)6y x π=+C .sin(2)6y x π=-D .2cos(2)3y x π=+【分析】根据三角函数的图象与性质,判断满足条件的函数即可. 【答案】解:“①最小正周期是π,可得2ω=,排除选项A ;②图象关于直线3x π=对称,可得:52366πππ⨯+=,5cos 6π=,排除选项B , 242333πππ⨯+=,41cos 32π=-,排除选项D ;对于C ,函数sin(2)6y x π=-,最小正周期为π, 且2362πππ⨯-=,sin12π=,函数图象关于3x π=对称;[6x π∈,]3π时,2[66x ππ-∈,]2π, sin(2)6y x π∴=-是单调增函数,C 满足条件.故选:C .【点睛】本题考查了三角函数的图象与性质的应用问题,是基础题.10.(5分)(2019秋•凯里市校级期末)如图,在ABC ∆中,AD 、BE 、CF 分别是BC 、CA 、AB 上的中线,它们交于点G ,则下列各等式中不正确的是( )A .23BG BE =B .2CG GF =C .12DG AG =D .0GA GB GC ++=【分析】有三角形的重心分各条中线为1:2得解.【答案】解:由条件可知G 为ABC ∆的重心,由三角形重心的性质可知12DG GA =,故C 不正确.故选:C .【点睛】考查三角形中重心的性质.11.(5分)(2019秋•吕梁期中)函数()2cos()(0f x x ωϕω=+>,0)ϕπ<<为奇函数,该函数的部分图象如图所示,点A 、B 分别为该部分图象的最高点与最低点,且这两点间的距离为()f x 图象的一个对称中心为( )A .(4,0)B .(2π,0) C .(4π,0) D .(2,0)【分析】直接利用函数奇函数确定ϕ的值,进一步利用2222()4T+=解得T 的值,最后确定函数的关系式,最后利用整体思想求出函数的对称中心.【答案】解:函数()2cos()(0f x x ωϕω=+>,0)ϕπ<<为奇函数, 则:2πϕ=,所以:()2sin f x x ω=-,点A 、B 分别为该部分图象的最高点与最低点,且这两点间的距离为则:2222()4T+=,解得:8T =, 进一步解得:4πω=,所以:函数()2sin 4f x x π=-,令4x k ππ=,解得:4x k =, 当1k =时,4x =,故函数的对称中心为:(4,0). 故选:A .【点睛】本题考查的知识要点:正弦型函数的图象的应用,函数的对称中心的应用.12.(5分)(2019•朝阳区模拟)如图,边长为1的正方形ABCD 的顶点A ,D 分别在x 轴、y 轴正半轴上移动,则OB OC 的最大值是( )A .2B .1C .πD .4【分析】令OAD θ∠=,由边长为1的正方形ABCD 的顶点A 、D 分别在x 轴、y 轴正半轴上,可得出B ,C 的坐标,由此可以表示出两个向量,算出它们的内积即可.【答案】解:如图令OAD θ∠=,由于1AD =故0cos A θ=,sin OD θ=, 如图BA ∠2x πθ=-,1AB =,故cos cos()cos sin 2B x πθθθθ=+-=+,sin()cos 2B y πθθ=-=, 故(cos sin ,cos )OB θθθ=+,同理可求得(sin ,cos sin )C θθθ+,即(sin ,cos sin )OC θθθ=+,∴(cos sin OB OC θθ=+,cos )(sin θθ,cos sin )1sin 2θθθ+=+,1sin 2OB OC θ=+ 的最大值是2,故选:A .【点睛】本题考查向量在几何中的应用,设角引入坐标是解题的关键,由于向量的运算与坐标关系密切,所以在研究此类题时应该想到设角来表示点的坐标,属于中档题. 二.填空题(共4小题,满分20分,每小题5分) 13.(5分)(2018•凌源市模拟)sin 47sin17cos30cos17︒-︒︒︒的值等于 12.【分析】化47︒为3017︒+︒,然后展开两角和的正弦化简求值. 【答案】解:sin 47sin17cos30sin(3017)sin17cos30cos17cos17︒-︒︒︒+︒-︒︒=︒︒sin30cos17cos30sin17sin17cos30cos17︒︒+︒︒-︒︒=︒sin30cos171sin30cos172︒︒==︒=︒.故答案为:12. 【点睛】本题考查三角函数的化简求值,考查了两角和的正弦,是基础题.14.(5分)(2019秋•凯里市校级期末)已知||3a =,||5b =,12a b =,则a 在b 方向上的投影为125. 【分析】根据a 在b 方向上的投影的概念可得a 在b 方向上的投影为||c o s ,a a b <>再结合cos ,||||a ba b a b <>=即可求解. 【答案】解:a 在b 方向上的投影为||cos ,a a b <>12||cos ,5||a b a a b b ∴<>== 故答案为125【点睛】本题主要考查了向量的投影.解题的关键是要熟记a 在b 方向上的投影的计算公式||cos ,a a b <>!15.(5分)(2019春•高密市校级月考)已知2cos 3a =,且02a π-<<,tan()sin(2)cos()tan()a a a a πππ--+-+的值 . . 【分析】由已知利用同角三角函数关系式可求sin α,根据诱导公式化简所求后即可代入求值.【答案】解:2cos 3a=,且02a π-<<,sin α∴=, ∴tan()sin(2)(tan )sin 3tan 2cos()tan()cos tan 3a a a a ππαααπαα--+-==-=-=-+. 【点睛】本题主要考查了同角三角函数关系式及诱导公式的应用,属于基础题.16.(5分)(2019春•小店区校级月考)设函数()3sin(2)3f x x π=-的图象为C ,给出下列命题:①图象C 关于直线1112x π=对称; ②函数()f x 在区间5(,)1212ππ-内是增函数; ③函数()f x 是奇函数; ④图象C 关于点(,0)3π对称.⑤|()|f x 的周期为π其中,正确命题的编号是 ①② .(写出所有正确命题的编号) 【分析】①113sin(2)sin 11232πππ⨯-==-,()f x ∴在1112x π=处取得最小值,可判断出其图象关于此直线对称; ②由5(,)1212x ππ∈-,则2232x πππ-<-<,从而sin(2)3x π-在区间5(,)1212ππ-上单调递增,进而可判断()f x 的单调性;③判断()()f x f x -=-是否成立即可; ④判断()03f π=是否成立即可; ⑤判断|()||()|2f x f x π+=,|()||()|f x f x π+=是否成立即可.【答案】解:①113sin(2)sin 11232πππ⨯-==-,∴图象C 关于直线1112x π=对称,正确; ②若5(,)1212x ππ∈-,则2232x πππ-<-<,∴sin(2)3x π-在区间5(,)1212ππ-上单调递增,从而函数()f x 在区间5(,)1212ππ-内是增函数,故正确;③()3sin(2)3sin(2)3sin(2)333f x x x x πππ-=--=-+≠--,∴函数()f x 不是奇函数,不正确;④()3sin(2)3sin 303333f ππππ=⨯-==≠,故图象C 关于点(,0)3π不对称,不正确;⑤|()||3sin[2()]||3sin(2)||3sin(2)||()|22333f x x x x f x πππππ+=+-=--=-=,而|()||()|4f x f x π+≠,因此|()|f x 的周期为2π,故不正确. 综上可知:只有①②正确. 故答案为①②.【点睛】熟练掌握三角函数的图象和性质是解题的关键. 三.解答题(共6小题,满分70分)17.(10分)(2018秋•渝中区校级期末)已知(,),sin 2cos 2παπαα∈=-(1)求222sin 1cos αα+的值;(2)求3cos(2)4πα-的值. 【分析】(1)直接利用同角三角函数关系式的变换求出结果. (2)直接利用差角公式的应用和特殊角的三角函数的值求出结果.【答案】解:(1)已知(,),sin 2cos 2παπαα∈=-所以tan 2α=-.所以22222222sin 2sin 2tan 2441cos sin 2cos tan 2423ααααααα⨯====++++.(2)2223332tan 21tan 2(4)(3)cos(2)cos2(cos )sin 2sin 24441tan 55πππαααααααα----=+-==+【点睛】本题考查的知识要点:三角函数关系式的恒等变换,主要考查学生的运算能力和转换能力及思维能力,属于基础题型.18.(12分)(2019秋•凯里市校级期末)已知向量(3cos ,1)αα=,(2,3sin )b α=-,且b α⊥,其中(0,)2πα∈(1)求sin α和cos α的值;(2)若5sin()αββ+=,(0,)βπ∈,求角β的值.【分析】(1)用向量垂直的充要条件的sin 2cos αα=;再用三角函数的平方关系求值. (2)用三角函数的和角公式展开求得tan 1β=-,进一步求出β. 【答案】解:(1)a b ⊥,∴6cos 3sin 0a b αα=-+=,即sin 2cos αα=,又22sin cos 1αα+=,∴21cos 5α=,24sin 5α=,∴24sin 5θ=,又(0,)2πα∈,∴sin αα=.(2)5sin()5(sin cos cos sin )αβαβαββββ+=+=+=,cos sin ββ∴=,即tan 1β=,(0,)βπ∈,∴4πβ=:答sin α和cos α的值为sin αα==;角β的值为4πβ= 【点睛】本题考查向量垂直的充要条件和三角函数的和角公式. 19.(12分)(2019秋•东城区期末)已知函数()2sin(2)13f x x π=++.(Ⅰ)当43x π=时,求()f x 值;(Ⅱ)若存在区间[a ,](b a ,b R ∈且)a b <,使得()y f x =在[a ,]b 上至少含有6个零点,在满足上述条件的[a ,]b 中,求b a -的最小值.【分析】(Ⅰ)当43x π=时,代入()f x 的解析式,即可得到()f x 的值;(Ⅱ)令()0f x =,即可解出零点的坐标,可得相邻两个零点之间的距离.若b a -最小,则a 和b 都是零点,此时在区间(a ,*)()m a m N π+∈恰有4个零点,即可得到a ,b 满足的条件,进一步即可得出b a -的最小值.【答案】解:(1)当43x π=时,4()2sin(2)12sin(3)12sin 1133f x ππππ=⨯++=+=+=;(2)1()0sin(2)324f x x x k πππ=⇒+=-⇒=-或7,12x k k Z ππ=-∈,即()f x 的零点相离间隔依次为3π和23π, 故若()y f x =在[a ,]b 上至少含有6个零点, 则b a -的最小值为2723333πππ⨯+⨯=. 【点睛】本题综合考查了三角函数的周期性、函数的零点等基础知识与基本技能,考查了分析问题和解决问题的能力、推理能力和计算能力.20.(12分)(2019秋•瑞安市校级月考)设向量(3sin m = 2x ,sin cos x + )x ,(1n =,sin cos x -)x ,其中x R ∈,函数()f x m n =.(1)求()f x 的最小正周期及单调递增区间;(2)若()f θ=,其中02πθ<<,求θ的值.【分析】(1)利用向量的坐标运算及两角和与差的正弦公式可将()f x 化简为()2sin(2)6f x x π=-,从而可求()f x 的最小正周期及单调递增区间;(2)5022666ππππθθ<<⇒-<-<,①由()2sin(2)6f πθθ=-,②二者联立即可求得θ的值. 【答案】解:(1)(3sin 2m x =,sin cos )x x +,(1,sin cos )n x x =-,()f x m n ∴=2(sin cos )(sin cos )x x x x x =++-222(sin cos )x x x =+-2cos2x x =-12cos2)2x x =- 2sin(2)6x π=-,()f x ∴的最小正周期T π=;由222()262k x k k Z πππππ--+∈剟得:()63k x k k Z ππππ-+∈剟,()f x ∴的单调递增区间为[6k ππ-,]()3k k Z ππ+∈.(2)()2sin(2)6f πθθ=-=sin(2)6πθ∴-, 02πθ<<,52666πππθ∴-<-<, 263ππθ∴-=或2263ππθ-=, 4πθ∴=或512πθ=. 【点睛】本题考查向量的坐标运算及两角和与差的正弦公式,着重考查二倍角的余弦与辅助角公式的应用,考查正弦函数的单调性与求值,属于中档题. 21.(12分)已知向量3(cos 2x a =,3sin )2x ,(cos 2x b =,sin )2x -,且[0x ∈,]2π.(1)求a b 及||a b +;(2)若()2||f x a b a b λ=-+的最小值为7-,求实数λ的值. 【分析】(1)由数量积的运算和模长的计算,结合三角函数运算可得;(2)由(1)可知22()2(cos )21f x x λλ=---,由[0x ∈,]2π可得cos [0x ∈,1],由二次函数区间的最值分类讨论可得. 【答案】解:(1)3(cos2x a =,3sin )2x ,(cos 2xb =,sin )2x -,∴333coscos sin sin cos()cos2222222x x x x x xa b x =-=+=, 222222233||2cos sin cos sin 2cos22222x x x xa b a b a b x ∴+=++=++++ 222cos24cos x x =+=,又[0x ∈,]2π,||2cos a b x ∴+=;(2)由(1)可知()2||cos24cos f x a b a b x x λλ=-+=-2222cos 4cos 12(cos )21x x x λλλ=--=---,[0x ∈,]2π,cos [0x ∴∈,1],当0λ…时,由二次函数可知cos 0x =时()f x 取最小值1-,这与最小值为7-矛盾; 当1λ…时,由二次函数可知cos 1x =时()f x 取最小值147λ-=-,解得2λ=,符合题意;当01λ<<时,由二次函数可知cos x λ=时()f x 取最小值2217λ--=-,解得λ=,这与01λ<<矛盾; 综上可知实数λ的值为2【点睛】本题考查两角和与差的三角函数,涉及向量的运算和二次函数区间的最值以及分类讨论的思想,属中档题.22.(12分)(2019春•德惠市月考)已知向量(sin ,1),(3cos ,cos2)(0)2Am x n A x x A ==>,函数()f x m n =的最大值为6.(1)求A 的值及函数图象的对称轴方程和对称中心坐标; (2)将函数()y f x =的图象向左平移12π个单位,再将所得的图象上各点的横坐标缩短为原来的12倍,纵坐标不变,得到函数()y g x =的图象,求()g x 在5[0,]24π上的值域. 【分析】(1)根据向量的数量积公式和三角形函数的化简求出()f x ,再求出对称轴方程和对称中心坐标, (2)根据图象的变换可得()g x ,再根据正弦函数的性质求出函数的值域. 【答案】解:(1)(sin ,1),(3cos ,cos2)(0)2Am x n A x x A ==>, ∴()3sin cos cos2sin(2)26A f x m n A x x x A x π==+=+, 函数()f x m n =的最大值为6, 6A ∴=,∴对称轴方程为,62k x k Z ππ=+∈,对称中心坐标为(,0),122k k Z ππ-+∈; (2)函数()y f x =的图象向左平移12π个单位,再将所得的图象上各点的横坐标缩短为原来的12倍,纵坐标不变, ∴()6sin(4)3g x x π=+,5[0,]24x π∈, 4[33x ππ∴+∈,7]6π,1sin [2x ∴∈-,1],∴值域为[3-,6].【点睛】本题考查了平面向量的数量积及三角函数的化简与其性质的应用,属于中档题.。

(完整版)高中数学必修四(综合测试题+详细答案)(可编辑修改word版)

(完整版)高中数学必修四(综合测试题+详细答案)(可编辑修改word版)

232a -b 2 a - b 2a - ba - b一、选择题(12 道)必修四综合复习1.已知 AB = (6,1), BC = (x , y ), C D = (-2,-3),且BC ∥ DA ,则 x+2y 的值为( )1 A .0B. 2C.D. -222. 设0 ≤< 2,已知两个向量OP 1 = (cos , sin ), OP 2 = (2 + sin , 2 - cos ),则向量 P 1 P 2 长度的最大值是( ) A. B. C. 3 D. 23.已知向量 a , b 满足 a = 1, b = 4, 且 a ⋅ b = 2 则 a 与b 的夹角为A.B .C .D .64 3 24. 如图 1 所示,D 是△ABC 的边 AB 上的中点,则向量CD = ()A. - BC + 1 1BA2B. - BC - 1BA 21C. BC - BA 2D. BC + BA25. 设 a 与b 是两个不共线向量,且向量 a +b 与-(b - 2a )共线,则=( )A .0B .-1C .-2D .0.56. 已知向量 a =( 3,1), b 是不平行于 x 轴的单位向量,且a ⋅ b =,则b =()A. ⎛ 3 1 ⎫B.⎛ 1 3 ⎫C.⎛ 1 3 3 ⎫ D .(1,0), ⎪, ⎪ , ⎪⎝ 2 2 ⎭ ⎝ 2 2 ⎭⎝ 4 4 ⎭7.在∆OAB 中, = a , = b , OD 是 AB 边上的高,若 =,则实数等 于( )OAA. a ⋅ (b - a )OB B. a ⋅ (a - b )C. a ⋅ (b - a ) AD ABD. a ⋅ (a - b )8.在∆ABC 中, a , b , c 分别为三个内角 A 、B 、C 所对的边,设向量 m = (b - c , c - a ), n = (b , c + a ) ,若向量 m ⊥ n ,则角 A 的大小为 ( )2A.B .C .D .632 39.设∠BAC 的平分线 AE 与 BC 相交于 E ,且有 BC = CE , 若 AB = 2 A C 则等于()1 1 A 2BC -3D -2310.函数 y = sin x cos x + 3 cos 2x -的图象的一个对称中心是()A. ( , 33 3 , - 3)2 , -3 )B. ( 5 ,- 3 ) C. (- 23 ) D. ( 3 2 62 3 233 2 b 11. (1+ tan 210 )(1+ tan 220 )(1+ tan 230 )(1+ tan 240 ) 的值是()A. 16B. 8C. 4D. 2cos 2 x12.当0 < x <时,函数 f (x ) = 41cos x sin x - sin 2x1 的最小值是( )A. 4B.C . 2D .24二、填空题(8 道) 13.已知向量 a = (cos , s in ) ,向量= ( 3, -1) ,则 2a - 的最大值是.b b14.设向量 a 与 的夹角为,且 a= (3,3) , 2b - a = (-1,1) ,则cos=.15.在∆AOB 中, O A = (2 c os,2 s in ), OB = (5 c os,5sin ) ,若OA ⋅ O B = -5 ,则∆AOB 的面积为.16. tan 20 + tan 40 + tan 20tan 40 的值是 .3 517. ABC 中, sin A = 5 , cos B =13,则cos C =.18. 已知sin + c os = 1, s in - c os = 3 1 ,则sin(- ) =.2⎡ ⎤19. 函数 y = sin x + cos x 在区间 ⎢⎣0, 2 ⎥⎦上的最小值为 .20. 函数 y = (a cos x + b sin x ) cos x 有最大值2 ,最小值-1,则实数 a =, b =.三、解答题(3 道)21. 已知|a|= ,|b|=3,向量 a 与向量 b 夹角为45 ,求使向量 a+b 与a+b 的夹角是锐角时,的取值范围3dongguan XueDa Personalized Education Development Center22 .已知向量 a = (sin ,-2) 与b = (1, c os ) 互相垂直,其中∈(0, ) .2(1)求sin 和cos 的值;(2)若sin(-) =, 0 <<,求cos的值.10223.)已知向量 a = (sin , cos - 2 sin ), b = (1, 2).若| a |=| b |, 0 << , 求的值。

人教版高中英语选择性必修第四册综合检测(A卷)含答案

人教版高中英语选择性必修第四册综合检测(A卷)含答案

综合检测(A卷)(时间:120分钟满分: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。

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A.Look for a job.B.Take classes.A.To London.B.To Toronto.A.In an airplane.B.In a boat.A.A tree fell on it.B.Someone stole it.(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。

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

每段对话或独白读两遍。

听第6段材料,回答第6、7题。

B.No.14.C.No.6.A.Where to change buses.B.The ticket price.听第7段材料,回答第8、9题。

A.Make snowballs.B.Go skating.’s the weather like today?A.Snowy and cold.B.Cloudy and windy.听第8段材料,回答第10至12题。

A.On Wednesday.B.On Saturday.C.On Friday.B.$815.C.$425.’s journey?A.Drinking is not allowed.B.A lunch will be served.听第9段材料,回答第13至16题。

A.For one week.B.For ten days.B.Tomorrow.C.Uncertain.’s the doctor’s suggestion for the woman?A.To have medical checks regularly.B.To take the medicine every day.A.In a few days.B.In a long time.听第10段材料,回答第17至20题。

高中英语 牛津译林版 必修四 Unit1 Advertising 综合练习(含答案)

Module 4 Unit 1 综合练习一、根据句子意思选择方框内合适的词组,并用其正确形式填空。

1. The software protect computers from being attacked by viruses.2. It took them a long time how to start the equipment.3. John has a way to his opinion while using as few words as possible.4. Popular music especially teenagers.5. He is too smart to that trick.6. There are many difficulties7. Allow children the space to voice their opinions they are different from your own.8. John is a naughty student. He likes to his classmates.9. The animals starvation in the snow.10. Sore throat and foods like onions and garlic may cause .二、根据句意, 选用方框内所给动词的适当形式填空。

(注意时态、语态、非谓语动词)1. Really sorry for the trouble —I didn ’t to bother you.2. I wonder how they are going to to my suggestion.3. These measures are at preventing violent crime.4. Many thousands have from the new treatment.5. He was caught on the test.6. At the street corner there is a big poster (海报)a new mobile phone.7. Aspirin will you of your headache.8. The young man the old woman into believing he was a rich man.9. I don ’t have enough money a new car.10. I was not at all __________ at the news that the corrupt principle had been arrested.三、用括号中所给单词的适当形式填空。

高中语文人教版必修四习题:第1单元 单元综合测评1含答案

单元综合测评(一)(时间:100分钟,分值:120分)一、基础巩固(12分,每小题3分)1.填入下面文段空白处的词语,最恰当的一组是( )【导学号:91232020】或者就只是一簇一簇无名的野草,春绿秋黄、岁岁枯荣。

它们没有条件生长宽阔的叶子,____①____它们寻找不到足以使草叶变得肥厚的营养,它们有的____②____三两片长长的细瘦的薄叶,那细微的叶脉告诉你生存该是多么艰难;更有的,它们____③____在一簇一簇瘦叶下自己生长出根须,只____④____少向母体吮吸一点乳汁,____⑤____自去寻找那不易被察觉到的石缝。

【解析】明“少”之意,最后两句之间是表目的的关系,用“为了”与“便”搭配。

【答案】 B2.下列各句中加点成语的使用,不正确的两项是( )A.这个超市占地面积很大,管理规范,货物排列得井井有条,让顾客一进门就了如指掌....,很快就可以找到自己想要买的东西。

B.传统的翻译理论与实践一直将“信”“达”“雅”奉为圭臬....,重视有加,然而翻译实践中更为常见的却是译文对原文在内容或形式上或多或少的偏离。

C.他兼善篆、隶、真、行、草等多种书体,而最为精妙者,当推行、草二体。

其行、草书,既传古意,又能独辟蹊径....。

故其下笔遒劲有力,气脉通灵。

D.你对用户越了解,越容易掌握他们会出现在什么地方,以及有什么需求。

这样就不用你再找选题了,选题会锲而不舍....地跑到你的脑子里。

E.笔者认为,无论是“任性”的上海女孩,还是“不平”的江西女孩,都是无可指责的,更不该口诛笔伐....。

【解析】A项,了如指掌:好像指着自己的手掌给人看一样,形容对情况非常清楚。

不合语境。

B项,奉为圭臬:把某些言论或事物当作准则。

使用正确。

C项,独辟蹊径:独自开辟一条新路,比喻独创新法。

使用正确。

D项,锲而不舍:雕刻一件东西,一直刻下去不放手,比喻做事情能坚持到底,不半途而废。

也形容有恒心,有毅力。

用错对象,应改为“源源不断”。

【综合练习卷】高一英语必修四综合练习卷及答案

必修4 综合练习卷(一)第一部分阅读理解(共两节,满分30分)第一节(共10小题;每小题2分,满分20分)阅读下列短文,从每题所给的四个选项中(A、B、C、D)中,选出最佳选项。

ANobody likes home economics(家政学). But restoring the program could help us in the fighting against obesity and chronic diseases today.The home economics movement was founded on the belief that housework and food preparation were important subjects that should be studied scientifically. The first classes occurred in the agricultural and technical colleges that were built in the 1860s. When most departments of universities rejected women, home economics was a back door into higher education.Indeed, in the early 20th century, home economics was a serious subject. When few people understood germ(微生物)theory and almost no one had heard of vitamins, home economics classes offered vital information about washing hands regularly, eating fruits and vegetables and not feeding coffee to babies.However, today we remember only the fixed ideas about home economics, forgetting the movement’s most important lessons on healthy eating and cooking. Too many Americans simply don’t know how to cook. Our diets, consisting of highly processed foods made cheaply outside the home, have contributed to many serious health problems. In the last decade, many cities and states have tried to tax junk food heavily or to ban the use of food stamps to buy soda. Clearly, many people are doubtful about any governmental steps to promote healthy eating. But what if the government put the tools of obesity prevention in the hands of children themselves1高一英语必修四综合练习卷by teaching them how to cook?My first experience with home economics happened two decades ago when I was a seventh grader in a North Carolina public school. A year later, my father’s job took our family to Wales, where I attended a large school for a few months. It was the first time I had ever really cooked anything. I remember that it was fun, and with an instructor standing by, it wasn’t hard. Those lessons stuck with me when I first started cooking for my husband and myself after college and they will do. Teaching cooking in public schools can help solve some problems facing Americans today. The history of home economics shows it’s possible.1. Home economics ______.A. is a subject becoming more and more popular with AmericansB. is often used to help fight against obesity and chronic diseasesC. once offered women a special approach to university educationD. was first taught in the agricultural and technical colleges in the early 1900s2. The third paragraph mainly tells us ______.A. the importance of regular hand washingB. the health benefits of fruits and vegetablesC. the contents of home economics classes in the early 20th centuryD. the significance of teaching home economics in the early 20th century3. What does the author imply in the last paragraph?A. Her family moved frequently in her childhoodB. Cooking classes have a far-reaching influence on her later life.C. To receive a better education, she went to a large school in WalesD. Teaching cooking is the key to solving Americans’ health problemsBSelf-esteem is all about how much we feel valued, loved , accepted and thought well of by others and how much we value , love and accept ourselves. People with2高一英语必修四综合练习卷healthy self-esteem are able to do better in school and find it easier to make friends. They tend to have better relationships with others, feel happier, find it easier to deal with mistakes and failures, and more likely to stick to something until they succeed. People with low self-esteem often feel as if no one will like them or accept them or that they don’t do well in anything.The following ways may help you improve your self-esteem.Try to stop thinking negative thoughts about yourself. If you’re used to focusing on your shortcomings, start thinking about positive aspects of yourself that overweigh them. It is good to aim high, but your goals for yourself should be within reach. That’s why you should set practical goals and never expect the impossible. Mistakes are part of learning, so view mistakes as learning opportunities. Accept that you make mistakes because everyone does. Also, you should recognize what you can change and what you can’t. If you realize that you’re unhappy with something about yourself that you can change, start today. If it’s something you can’t change(like your height), start to work toward loving yourself the way you are. Feeling like you’re making a difference and that your help is valued can do wonders to improve your self-esteem. So don’t hesitate to make a contribution. You can lend a hand to a classmate who’s having trouble, help clean up your neighborhood or volunteer to do some other things.Self-esteem plays a role in almost everything you do. It takes some work, but it’s a skill you’ll have for life.4. The passage is mainly about ______.A. what self-esteem meansB. what people with how self-esteem are likeC. how people improve their self-esteemD. what people with healthy self-esteem are like5. We can infer from the passage that ______.A. the old tend to have healthier self-esteem than the young3高一英语必修四综合练习卷B. we should build healthy, positive self-esteem when youngC. there are more people with low self-esteemD. it is not easy to build healthy self-esteem6. The underlined word“them” in Paragraph 3 refers to ______.A. your strong pointsB. your weaknesses and faultsC. your aims and goalsD. your classmatesCEarly this month, the Obama Administration called for increased protection of the world’s most southern continent, Antarctica. Scientists say climate change and human activity have increasingly led to the melting of massive pieces of Antarctic ice. The disappearance of ice will not only affect wildlife in the area such as seals and penguins. The melting will also cause oceans and seas around the world to rise.This represents a major threat, especially to coastal areas. For example, the ancient city of Venice, Italy has long been threatened by rising sea levels. The situation is made worse by the fact that its ancient buildings, built on a body of water called a lagoon are slowly sinking. When the city was founded about 1,600 years ago, the levels of the Adriatic Sea was almost two meters lower than it is today.Rising sea levels are not the only threat. The salty water is also destroying Venice’s famous buildings and artworks. The Italian governmen t is trying to fix the problem with the construction of a seven-billion-dollar of moving flood barriers.Climate change is also leading to the melting of ice in other areas, such as Mount Kilimanjaro in northern Tanzania. It is the highest point in Africa, measuring almost 6,000 meters. The mountain supports five vegetation zones and many kinds of animals.The ice glaciers on the mountain are disappearing very quickly. This will have a bad effect on the mountain’s ecosystems and on Tanzania’s travel industr y. Also, a valuable record of thousands of years of weather history will also be lost if the ice4高一英语必修四综合练习卷melts. Scientists study pieces of glacier to understand weather patterns from thousands of years ago.In the United States, the icy masses in Glacier National Park in Montana may soon completely disappear because of climate change, In 1850, there were an estimated 150 glacier in the more than 400,000-hectare park.There are twenty-six glaciers remaining today. Scientists estimate that the glaciers will be gone by 2030. Warning temperatures are also threatening many kinds of plants and animals that live in this mountain ecosystem.7. According to the passage, what has been affected in Italy by rising sea levels?A. It’s ancient buildings are slowly sinking.B. Ven ice’s famous buildings and artworks are also being destroyed.C. The ice glaciers on the mountain are disappearing very quickly.D. Both A and B.8. How many glaciers have disappeared since 1850 in Glacier National Parks?A. Around 150.B. About 26.C. About 400,000.D. Around 124.9. The writer developed the passage mainly by ______.A. listing reasonsB. giving examplesC. making comparisonsD. using quotations10. What could be the best title of the passage?A. Climate ChangeB. The Melting of Massive Pieces of Antarctic IceC. Visiting Endangered Places around the WorldD. The Disappearance of the Ice Glacier第二节(共5小题;每小题2分,满分10分)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。

高中英语 必修4 模块综合测试卷(1)(含答案解析)

高中英语必修4模块综合测试卷(1)(含答案解析)(满分120分时间100分钟)一.单选:(共20道题,每道1分,共20分)1.Asabusdriver,youshouldtryyourbestto_______accidents.A.meetB.avoidC.overcomeD.miss2.Thewomanwantedtogetherpayraised,soshemadeevery_________toapproachherboss.A.effortB.strengthC.courageD.mind3.—Youhaven’tbeentoAustralia,haveyou?—_________.HowIwishtogothere!A.Yes,IhaveB.Yes,Ihaven’tC.No,IhaveD.No,Ihaven’t4.Asweallknow,thedoveandtheolivebranch______peace.A.presentB.markC.replaceD.represent5._________theguide,thereporterenteredthehouseofthefarmerwhoisfamousforhelpingothervillagersgetrich.A.FollowedB.BeingfollowedC.FollowingD.Tofollow6.WewenttoProfessorLi’syesterday.Hegaveus________.A.someadvic eB.advicesC.anadvicesD.someadvices7.Itwas______latetocatchabusaftertheparty,sowecalledataxi.A.tooveryB.muchtooC.toomuchD.quite8.Idon'tlikemilk,butIammade___________iteveryday.A.todrinkB.drinkingC.drinkD.drunk9.PeopleinAmericaspeakthesamelanguage_______theBritishdo.A.whichB.whatC.asD.like10.–-MustIstarttheworkatonce?---No,you______.A.maynotB.mustn’tC.needn’tD.can’t11.---WhereisTom?---Heseems______withSmithoverthere.A.totalkB.talkingC.tobetalkingD.tohavetalked12.---Excuseme,youleftthebagintheshop.---______A.It’snotmyfault.B.Oh,thankyou.C.I’msorry.I’mbusy.D.It’smin e!13.Howlonghaveyou______yourgoldring?A.borrowedB.lentC.boughtD.kept14.MysistermethimattheGrandTheatreyesterdayafternoon,sohe________yourlecture.A.couldn’thaveattendedB.needn’thaveattendedC.mustn’thaveattendedD.shouldn’thaveattended15.Themissingboyswerelastseen______neartheriver.A.playingB.toplayC.playD.tobeplaying16.Sheused__________intownbutnowshefindsherself___________inthecountry.A.tolive…usedtoliveB.toliving…usedtolivingC.tolive…usedtolivingD.toliving…usedtolive17.Thelazyboy______inbed,______hewasill.A.lied;lyingy;lyingying;lyingin;laying18.Hearingthe______news,allthestudentswere______.A.inspired;inspiringB.inspiring;inspiredC.inspired;inspiredD.inspiring;inspiring19.Thereasonwhyhewaslatewas________itrainedheavily.A.whyB.thatC.whetherD.because20.Theydon'tallow______inthebuilding,buttheyallowme______outofit.A.tosmoke…smokingB.smoking…smokingCtosmoke…tosmoke D.smoking…tosmoke二.完型填空:(共20道题,每道1分,共20分) Iamactuallythefirstcancersurvivortoreachthesummitoftheworld’shighestmountain-Mt.Everest.WhenIwas_21_13,Igotcancerandthedoctorsgavemethreemonthsto__22_.Luckily,Irecovered.WhenIw as15,Igot__23_formofcancerwhichwasconsideredmuchworse__24_thedoctorsgavemeonlytwowee kstolive.AgainI__25__.Beingtheonlypersonintheworldtohave__26_hadthesetwokindsofcancer,IreallyfeltIshould_27__m ystorywithotherstoencourageand_28__theirlives.OnMay16th,2002,Ibecamethefirstcancersurvivo rto_29__thesummitofMt.Everest.Sincethen,Ihavebeen_30__enoughtoreachthesummitsofthreeoftheworld’sseven__31_summitsand have__32_internationallyaboutmylifeandadventurestocountlesspeopleandorganizations.WhenIgott othesummitofEverest,Ibroughta__33_andleftitthere.Therewerelotsofnamesofpeoplewhohadbeen _34__bycancerontheflag.Ididsojustinhonourofthe_35__ofcancerpatientsworldwide.EverytimeIre achedahighestpoint,_36__inAfricaorinSouthAmerica,Ialwaysleftaflagonit!Myfinal_37__istoreach theNorthandSouthpolesonfoot.Iwantto__38_courageandinspirationallovertheworld.Iwanttotellthosesufferingfromcancer__39__ anyonewholoveslifethattheycan__40_bigandtheyshouldnevergiveup.uallyC.evenD.quite22.A,recoverB.prepareC.decideD.live23.A.otherB.anotherC.secondD.same24.A.whenB.asC.thoughD.but25.A.savedB.survivedC.improvedD.escaped26.A.everB.neverC.almostD.yet27.A.shareB.keepC.likeD.read28.A.shortenB.createC.influenceD.imagine29.A.studyB.findC.reachD.enter30.A.luckyB.worriedC.interestedD.different31.A.highestB.emptiestC.deepestD.toughest32.A.shoutedB.spokenC.criedD.sung33.A.flagB.prizeC.secretD.wish34.A.supportedB.defeatedC.attackedD.covered35.A.painB.struggleC.summitsD.doctors36.A.untilB.unlessC.whetherD.once37.A.pointB.jobC.subjectD.goal38.A.spreadB.broadcastC.turnD.express39.A.morethanB.inspiteofC.insteadofD.aswellas40.A.developB.dreamC.admireD.announce三.阅读理解:(共20道题,每道2分,共40分)AItwasMonday.Mrs.Smith'sdogwashungry,buttherewasnotanymeatinthehouse.Consideringthattherewasnobetterway.Mrs.Smithtookapieceofpaper,andwrotethefollowingwordsoni t:“Givemydoghalfapoundofmeat.”Thenshegavethepapertoherdogandsaidgently:“Takethistothebutcher(*personwhosejobissellingmeat)andhe'sgoingtogiveyouyourlunchtoday.”Holdingthepieceofpaperinitsmouth,thedograntothebutcher's.Itgavethepapertothebutcher.Thebut cherreaditcarefully,recognizedthatitwasreallythelady'shandwritingandsoondiditashewasaskedto.T hedogwasveryhappy,andatethemeatupatonce.Atnoon,thedogcametotheshopagain.Itgavethebutcherapieceofpaperagain.Afterreadingit,hegaveith alfapoundofmeatoncemore.Thenextday,thedogcameagainexactlyatnoon.Andasusual,itbroughtapieceofpaperinthemouth.Thisti me,thebutcherdidnottakealookatpaper,andgavethedogitsmeat,forhehadregardedthedogasoneofhis customers(*peoplewhobuysth.fromashop).But,thedogcameagainatfouro'clock.Andthesamethinghappenedonceagain.Tothebutcher'smoresurpr ise,itcameforthethirdtimeatsixo'clock,andbroughtwithitathirdpieceofpaper.Thebutcherfeltabitpu zzled.Hesaidtohimself,“Thisisasmalldog.WhydoesMrs.Smithgiveitsomuchmeattoeattoday?”Lookingatthepieceofpaper,hefoundthattherewerenotanywordsonit!41.Mrs.Smithtreatedherlittledogquite.A.cruellyB.fairlyC.kindlyD.friendly42.ItseemedthatthedogknewwellthatthepaperMrs.Smithgaveit______.A.mightdoitmuchharmB.coulddoitmuchgoodC.wouldhelpthebutcherD.wasworthmanypounds43.Thebutcherdidnotgiveanymeattothedog__________.A.beforehefeltsurethatthewordswerereallywrittenbyMrs.SmithB.whenhefoundthatthewordsonthepaperwerenotclearC.becausehehadsoldoutallthemeatinhisshopD.untilhewaspaidenoughbyMrs.Smith44.Fromitsexperience,thedogfoundthat________.A.onlythepaperwithMrs.Smith'swordsinitcouldbringitmeatB.thebutcherwouldgivethemeattoitwheneverhesawitC.Mrs.SmithwouldpayforthemeatitgotfromthebutcherD.apieceofpapercouldbringithalfapoundofmeat45.Attheendofthestory,you'llfindthat_______.A.thedogwascleverenoughtowriteonthepaperB.thedogdarednotgotothebutcher'sanymoreC.thebutcherwastoldnottogiveanymeattothedogD.thebutcherfoundhimselfcheatedbythecleveranimalBIwasinNewYorktheotherdayandrodewithafriendinataxi.Whenwegotout,myfriendsaidtothedrive r,“Thankyoufortheride.Youdidagoodjobofdriving.”Thetaxidriverwasshockedforasecond.Thenhesaid,“Areyouawisemanorsomething?”“No,mydearman,andI’mnotputtingyouon.Ilikethewayyoukeepcoolinheavytraffic.”“Yeah,”thedriversaidanddroveoff.“Whatwasthatallabout?”Iasked.“IamtryingtobringlovebacktoNewYork,”hesaid.“Ibelieveit’stheonlythingthatcansavethecity.”“HowcanonemansaveNewYork?”“It’snotoneman.IbelieveIhavemadethattaxidriver’sday.Supposehehas20fares(乘客).He’sgoingtobenicetothose20faresbecausesomeonewasnicetohim.Thosefaresinturnwillbekindertotheirshopkeepersorwaitersoreventheirownfamilies.Finallythegoodwillcouldgotoatleast1000people. Nowthatisn’tbad,isit?”“Butyou’redependingonthattaxidrivertopassyourgoodwilltoothers.”“I’mnotdependingonit,”myfriendsaid.“Imightdealwithtendifferentpeopletoday.IfoutoftenIcanm akethreehappy,thenIcanhaveaneffecton3000morepeople.”“Itsoundsgoodonpaper,”Isaid,“butI’mnotsureitworksinpractice.”“Nothingislostifitdoesn’t.Itdidn’ttakeanyofmytimetotellthatmanhewasdoingagoodjob.Heneither receivedalargertipnorasmallertip.Ifitfellondeafears,sowhat?Tomorrowtherewillbeanothertaxidriv erIcantrytomakehappy.”46.Whenthedriverheardmyfriend’swords,heatfirstbecame____.A.excited.B.angryC.pleasedD.surprised47.Whydidthewriter’sfriendpraisethedriver?A.Becausehehopedtotakethedriver’staxiagain.B.Becausehehopedtobringlovetothecity.C.Becausethedrivermovedhimreally.D.Becausethedriveroftenhelpedhim.48.Whatdoesthewriterthinkofhisfriend’sidea?A.It’snotagoodidea.B.It’snoteasytocarryout.C.It’sfunny.D.It’salittleinteresting.49.Wecanlearnfromthepassagethat____.A.thewritertriedtomakethetaxidriverhappy.B.thewriter’sfriendwantedtobeagoodtaxidriver.C.thewriter’sfrienddidhisbesttomaketheworldbetter.D.thewriter’splanwouldfailifthetaxidriverdidn’tlistentohim.C1970wasWorldConservation(自然保护)Year.TheUnitedNationswantedeveryonetoknowthattheworldisindanger.Theyhopedthatpeoplewould actquicklyinordertoconservenature(大自然).Hereisoneexampleoftheproblem.Atonetimetherewere1,300differentplants,treesandflowersin Holland,butnowonly866remain.Theothershavebeendestroyedbymodernman.Itissaidthattherearete nsofthousandsofkindsofanimalsintheworld,butnowmanyhavediedout(绝种).Wearechangingtheearth,theairandwater,andeverythingthatgrowsandlives.Wecan'tlivewithout thesethings.Ifwecontinuelikethis,weshalldestroyourselves.Whatwillhappeninthefuture?Perhapsitismoreimportanttoask“Whatmustwedonow?”Thepeoplewhowillbelivingintheworldoftomorrowaretheyoungoftoday.Alotofthemknowthatconserva tionisnecessary.Manyarehelpingtosaveourworld.Theyplanttrees,buildbridgesacrossriversandsoon.I nasmalltownintheUnitedStatesalargegroupofgirlscleanedthebanksof11kilometresoftheirriver.Youn gpeoplemayhearaboutconservationthrougharecordcalled“Noone'sgoingtochangeourworld.”ItwasmadebytheBeatles,CliffRichardandothersingers.Themoneyfromitwillhelptoconservewildanima ls.50.“Noone'sgoingtochangeourworld”was___________.A.animportantbookpublishedin1970B.anideathatnobodywouldaccept(接受)C.arecordcallingonpeopletoconservenatureD.anewspaperreportin197051.What'sthemostimportantthingforustodotosaveourworld?A.Weshouldknowwhatwillhappeninthefuture.B.Weshouldplantmoretreesandflowers.C.Weshouldcleanthebanksofourrivers.D.Wemustdowhatwemustdotosaveourworld.52.What'sthemainideaofthepassage?A.1970wasWorldConservationYear.B.TheUnitedNationswantedeveryonetoknowthattheworldisindanger.C.Conservationisnecessary.D.Youngpeoplearehelpingtosaveourworld.DRecently,manyofAmerica’sbiggestzooshavedecidedtoclosedowntheirelephantexhibits.Anewstudysh owsthatelephantslivebetterinthewild.Researchersstudies4,500elephantsinEuropeanzoosandcomparedthemwithelephantslivinginwild.The yfoundthatwildelephantsarehealthier,livelongerandreproduce(繁殖)morethanthosekeptinzoos. Manyanimalslivelongerinzoosthanthosewholiveinthewild.Inzoos,theyarenotworriedaboutsomeanimal sthatmayattackthematanytimewheninthewild.There’salwaysplentytoeat.Andtheyarecuredwhensick nessstrikes.Butwhenitcomestoelephants,thesituationisdifferent. Theresearcherssaidthatzoosdonotofferenoughspaceforelephantstowalkaboutasmuchas30milesada y.Toolittleexerciseandtoomuchfoodarecausingzooelephantstoputonextrapounds.Theweightgaincanl eadtoheartdiseaseandotherhealthproblems.Eventhebabyelephantsborninzoosareheavierthanthose borninthewild. BringingAsianandAfricanelephantstogetherinzooshasalsocausedproblems.Adiseasethatisnotdanger ousforAfricanelephantshasspreadtoAsianelephants,andisharmingthem.“Zooshaveaccidentallycreat edthis,”saysMason.“It’skillingAsianadultelephants.”Exertspointoutthatkeepingelephantsinzoos isn’t aproblemfortheanimalsonly;it’salsoquitecostlyforhu mans.Inthelast10years,zooshavespentabout$500milliononcagedspaceforabout250animals.paredwithwildelephants,elephantsinzoos______.A.livelongerB.areheavierC.arehealthierD.reproducemore54.Thefourthparagraphmainlytellsusthat______.A.babyelephantsaredifficulttoliveinzoosB.elephantswalkaslongasmilesadayC.littleroomtowanderleadstoproblemsforelephantsD.toomuchfoodinzoosleadstoheartdiseaseforelephants55.Whatcanwelearnfromthepassage?nelephantsaremoreeasilyattackedbydiseasesthanAfricanelephants.B.Thediseasesofzooelephantsarecausedbybeingoverweight.C.Zoosfreetheelephantsbecauseofthecostofkeepingthem.D.Elephantslivebetterinthewildthaninzoos.56.Thepassageisprobablytakenfrom_____.A.thezoorulesB.aguidebookC.ahealthyprogramD.asciencemagazineEYourbody,whichhascloserelationswiththefoodyoueat,isthemostimportantthingyouown,soitneed spropertreatmentandpropernourishment(营养).Theoldsaying“Anappleadaykeepsthedoctoraway”isnotassillyassomepeoplethink.Thebodyneedsfr uitandvegetablesbecausetheycontainvitaminC.Manypeopletakeextravitaminsinpillform,believingtha tthesewillmakethemhealthy.Butagooddietismadeupofnourishingfoodandthisgivesallthevitaminsyouneed.Thebodydoesn’tnee doruseextravitamins,sowhywastemoneyonthem?Inthemodernwesternworld,manypeoplearetoobusytobotherabouteatingproperly.Theythrowany thingintotheirstomachs,eatinghurriedlyandcarelessly.Thelistofillnessescausedormadeworsebybade atinghabitsisfrightening,57.“Yourbodyhascloserelationswiththefoodyoueat.”Itreallymeansthat______.A.allkindsoffoodyoueatcanbemadeintoyourbodyB.yourbodyismadeupofthefoodyoueatC.whatyoueathasgreateffectonyourhealthD.themoreyoueat,thefitteryouwillfeel58.Theoldsayingreferredtointhepassagetellsusthat______.A.eatingapplesregularlydoeslotsofgoodtoourhealthB.theappleisthebestamongallkindsoffruitsC.applescantaketheplaceofdoctorsD.anappleisasurecureforillness59.Inthesecondparagraph,thewritertriestoletusknow______.A.ourbodies needfoodorwecan’tliveB.ofteneatingapplesisagoodhabitC.takingextravitaminpillsiscompletelyuselessD.agooddietisofgreatimportanceforourhealth60.Inthemodernwesterncountries______.A.peopledon’twanttopaymoreattentiontotheireatingB.lotsofpeople’sillnessesar ecausedormadeworsebybadeatinghabitsC.peoplethroweverythingintotheirstomachswithoutchewingD.peopleareonlytoobusytocookmealsforthemselves四.根据对话内容,从对话后的选项中选出能填入空白处的最佳选项。

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宿州二中2012级高一必修4综合练习卷1
一 、选择题(本大题共10小题,每小题5分,共50分) 1、0sin 390=( ) A .
2
1 B .2
1-
C .
2
3 D .2
3-
2、下列区间中,使函数sin y x =为增函数的是 A .[0,]π B .3[
,]22
ππ
C .[,]22
ππ
-
D .[,2]ππ
3、下列函数中,最小正周期为
2
π
的是( )
A .sin y x =
B .sin cos y x x =
C .tan 2
x
y = D .cos 4y x =
4、已知(,3)a x = , (3,1)b =
, 且a b ⊥ , 则x 等于 ( )
A .-1
B .-9
C .9
D .1 5、已知1sin cos 3
αα+=,则sin 2α=( )
A .
2
1 B .2
1-
C .
89
D .89
-
6、要得到2sin(2)3
y x π=-的图像, 需要将函数sin 2y x =的图像( )
A .向左平移
23
π个单位 B .向右平移23
π个单位
C .向左平移3π个单位
D .向右平移3π
个单位
7、已知a ,b 满足:||3a = ,||2b = ,||4a b += ,则||a b -=
( )
A .3 D .10
8、设πθ20<≤,已知两个向量()θθsin ,cos 1=OP ,()θθcos 2,sin 22-+=OP ,则向量21P P 长度的最大值是( C ) A.2
B.3
C.23
D.32 9、已知2
tan()5
αβ+=, 1tan()44
π
β-=
, 则tan()4
π
α+
的值为 ( )
A .16
B .
2213
C .322
D .1318
10、已知:如右图所示是函数B x A y ++=) sin(
ϕω的一部分图象,如果
2
||,0,0π
ϕω<
>>A ,则 ( )
A.4=A
B.1=ω
C.6
π
ϕ=
D.4=B
二、填空题(本大题共4小题,每题5分,共20分,把答案填在题中横线上)
11、已知扇形的圆心角为0120,半径为3,则扇形的面积是 12、已知ABCD 为平行四边形,A(-1,2),B (0,0),C(1,7),则D点坐标为
13、函数y =
的定义域是 .
14、给出下列五个命题: ①函数2sin(2)3
y x π
=-
的一条对称轴是512
x π=
;②函数tan y x =的图象关于点(2
π
,0)
对称;③正弦函数在第一象限为增函数④若12sin(2)sin(2)4
4
x x π
π
-
=-
,则12x x k π-=,
其中k Z ∈以上四个命题中正确的有 (填写正确命题前面的序号)
三、解答题(本大题共6小题,共80分,解答应写出文字说明,证明过程或演算步骤) 15、(本小题满分12分)
(1)已知4cos 5
a =-,且a 为第三象限角,求sin a 的值
(2)已知3tan =α,计算 α
αααsin 3cos 5cos 2sin 4+- 的值
16、(本题满分12分)已知α为第三象限角,()3sin()cos(
)tan()
22
tan()sin()
f π
π
ααπαααπαπ-
+-=
----.
(1)化简()f α (2)若31cos()2
5
πα-=
,求()f α的值
17、(本小题满分14分)
已知向量a , b 的夹角为60
, 且||2a = , ||1b = ,
(1) 求 a b
; (2) 求 ||a b +
.
18、(本小题满分14分)
已知(1,2)a =
,)2,3(-=b ,当k 为何值时,
(1) k a b + 与3a b -
垂直?
(2) k a b + 与3a b -
平行?平行时它们是同向还是反向?
19、(本小题满分14分)
某港口的水深y (米)是时间t (024t ≤≤,单位:小时)的函数,下面是每天时间与水深的关系表:
经过长期观测, ()y f t =可近似的看成是函数sin y A t b ω=+ (1)根据以上数据,求出()y f t =的解析式
(2)若船舶航行时,水深至少要11.5米才是安全的,那么船舶在一天中的哪几段时间可以安全的进出该港?
20、(本小题满分14分)已知,cos )a x m x =+ ,(cos ,cos )b x m x =-+
, 且
()f x a b =
(1) 求函数()f x 的解析式;
(2) 当,63x ππ
⎡⎤
∈-
⎢⎥⎣

时, ()f x 的最小值是-4 , 求此时函数()f x 的最大值, 并求出相应的x 的值.
高中数学必修4模块测试题参考答案
一、选择题: ACDAD DDCCC
二、填空题:11、3π 12、(0,9) 13.、[2,2]k k πππ+k Z ∈ 14、①④
三、解答题:15、解:(1)∵22cos sin 1αα+=,α为第三象限角

3sin 5
α===-
(2)显然cos 0α≠

4sin 2cos 4sin 2cos 4tan 24325cos 5cos 3sin 5cos 3sin 53tan 5337
cos αα
αααααααα
αα---⨯-=
===++++⨯
16、解:(1)()3sin()cos(
)tan()
22
tan()sin()
f π
π
ααπαααπαπ-
+-=
----
(cos )(sin )(tan )
(tan )sin cos ααααα
α
--=
-=-
(2)∵31cos()2
5
πα-
=
∴ 1sin 5
α-=
从而1sin 5
α=-
又α
为第三象限角∴cos 5
α==-
即()f α
的值为5
-
17、解: (1) 1||||cos 602112
a b a b ==⨯⨯=
(2)
22||()a b a b +=+ 22
24211
3
a a
b b
=-+=-⨯+=
所以||a b +=
18、解:(1,2)(3,2)(3,22)k a b k k k +=+-=-+
3(1,2)3(3,2)(10,4)a b -=--=-
(1)()k a b +⊥ (3)a b -

得()k a b + (3)10(3)4(22)2380,19a b k k k k -=--+=-==
(2)()//k a b + (3)a b - ,得1
4(3)10(22),3
k k k --=+=-
此时1041
(,)(10,4)333
k a b +=-=-- ,所以方向相反。

19、解:(1)由表中数据可以看到:水深最大值为13,最小值为7,137102
h +=
=,
13732
A -=
=
且相隔9小时达到一次最大值说明周期为9,因此29T π
ω
==,29
πω=

故2()3sin
109
f t t π=+ (024)t ≤≤
(2)要想船舶安全,必须深度()11.5f t ≥,即23sin 1011.59
t π+≥
∴21sin
92
t π≥
25226
9
6
k t k π
ππππ+


+ 解得:3159944k t k +
≤≤
+
k Z ∈
又 024t ≤≤ 当0k =时,
333
44
t ≤≤;当1k =时,339
12
4
4
t ≤≤;当2k =时,3318
21
4
4
t ≤≤
故船舶安全进港的时间段为(0:453:45)-,(9:4512:45)-,(18:4521:45)-
20、解: (1) (),cos )(cos ,cos )f x a b x m x x m x ==+-+
即22
()cos cos f x x x x m =
+-
(2) 2
1cos 2()2
2x
f x m +=+
-
2
1sin(2)6
2x m π
=+
+
-
由,63x ππ⎡⎤
∈-
⎢⎥⎣⎦, 52,
666x πππ⎡⎤∴+∈-⎢⎥⎣⎦
, 1sin(2),162x π⎡⎤
∴+∈-⎢⎥⎣⎦
,
2
11422
m ∴-
+
-=-, 2m ∴=±
m ax 11()1222
f x ∴=+-=-
, 此时26
2
x π
π
+
=
, 6
x π
=
.。

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