2017届高三寒假作业检测卷

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2017年高考(232)山东省青岛市2017届高三上学期质量检测

2017年高考(232)山东省青岛市2017届高三上学期质量检测

2017年高考(232)山东省青岛市2017届高三上学期质量检测山东省青岛市2017届高三上学期质量检测试题语文第卷(共45分)一、(每小题3分,共24分)阅读下面一段文字,完成下面试题。

冬天随着一场寒凉的朔风隐遁无形,代之而来的便是期待许久的春,渴望在一个漫漫长夜后的清晨,能有一树树(色彩斑驳/色彩斑斓)的春花降临人间,遮蔽大地的荒芜与突兀。

但随着冬日渐远,花开的惊喜依旧未能(如愿/如意),而我对春花的期待初忠不改,就像等待一位从天堂出走的仙子,挥袂之间为广袤的人间降临一场福址,唯美而又持久。

春天本就是一个安谧静美的词语,镶嵌在季节的轮回里,而春花便是这轮回里的精灵,缀饰着春之明媚。

花开的时候,村庄就像,风姿绰约地(站/立)于大地之上;,辽阔的褴褛倏忽消隐在旷野深处。

那些高举着手臂的杨树,将枝干遥遥指向广袤沧穹,旗帜一般引领着春天不断前行。

1.文中加点的词语,没有错别字的一项是()A.隐遁初忠不改B.遮蔽安谧静美C.福址春之明媚D.旷野广袤沧穹2.依次选用文中括号里的词语,最恰当的一项是()A.色彩斑驳如愿站B.色彩斑斓如意站C.色彩斑斓如愿立D.色彩斑驳如意立3.在文中两处横线上依次填入语句,衔接最恰当的一项是()A.一位着了绣花长裙的女子春花瞬间把黛赭色的山峦覆盖B.一位着了绣花长裙的女子黛赭色的山峦瞬间被春花覆盖C.一位女子着了绣花长裙春花瞬间把黛赭色的山峦覆盖D.一位女子着了绣花长裙黛赭色的山峦瞬间被春花覆盖【答案】1.B2.C3.B【解析】1.试题分析:此类题注意字形相似的字的误写,同音字的误写情况。

A.初衷不改;C.福祉;D.广袤。

苍穹,忠-衷,址--祉,沧-苍,都是同音词,把音形义结合起来记忆。

此题需要平时的积累。

考点:识记并正确书写现代常用规范汉字。

能力层级为识记A。

2.试题分析:斑驳形容色彩杂乱,斑斓形容灿烂多彩;如愿,符合愿望;如意,符合心意。

站,常用于口语;立,常用于书面语。

福建永春县2017届高三英语寒假作业(一)

福建永春县2017届高三英语寒假作业(一)

高三年英语寒假作业(一)2017.01第I卷第一部分听力(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. What will Sam do?A. Cheer for his team.B. Try to get some tickets.C. Go to the Liverpool match.2. Why was Carl at the hospital?A. He was meeting a doctor.B. He was looking after his wife.C. He was visiting his daughter.3. Where are the speakers?A. At a cinema.B. At the airport.C. In a shopping center4. Why does Helen look great?A. She’s come back from a vacation.B. She’s rested for two days.C. She’s been exercising.5. What does the man ask the woman to do?A. To park the car elsewhere.B. To drive along a quiet street.C. To stop here for a short while.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,各小题将给出5秒钟的作答时间。

安徽省舒城中学2017届高三寒假作业(三)英语试题含答案

安徽省舒城中学2017届高三寒假作业(三)英语试题含答案

试卷(三)第一部分听力(略)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。

AThe baby is just one day old and has not yet left hospital. She is quiet but alert。

Twenty centimeters from her face researchers have placed a white card with two black spots on it. She stares at it carefully. A researcher removes the card and replaces it by another,this time with the spots differently spaced. As the cards change from one to the other,her gaze starts to lose its focus-until a third, with three black spots, is presented。

Her gaze returns; she looks at it for twice as long as she did at the previous card. Can she tell that the number two is different from three, just 24 hours after coming into the world?Or do newborns simply prefer more to fewer? The same experiment,but with three spots shown before two,shows the same return of interest when the number of spots changes。

山东省滕州市第三中学2017届高三英语寒假作业自测题(二)含答案

山东省滕州市第三中学2017届高三英语寒假作业自测题(二)含答案

山东省滕州市第三中学2016-2017学年度高三英语寒假作业自测题(二)学校:___________姓名:___________班级:___________考号:___________第二节:完形填空阅读下面短文,掌握其大意,然后从21 ~ 40各题所给的四个选项(A、B、C、D)中,选出最佳选项,并在答题纸上将该选项标号涂黑.The boys were ready for an exciting week on the sea,but the trip did not start at all as they had ___21___。

It was the first day of their weeklong ___22___ journey on the Chesapeake Bay in Maryland, and they had already been ___23___ one storm。

But that was ___24___ compared to the one they found themselves in ___25___ the same day.Wave ___26___ wave was hitting their sailing vessel, and then, with a sudden surge,their ship—the Marguerite—was pushed onto its side。

”A wall of wind and rain suddenly ___27___ us," Ethan Johnson says。

”The boat tipped over, and the rail went one or two feet into the ___28___。

And when an adult went to ___29___ to secure the main sail,he ___30___ and hurt his ankle。

山东省滕州市第三中学2017届高三英语寒假作业自测题(一)含答案

山东省滕州市第三中学2017届高三英语寒假作业自测题(一)含答案

山东省滕州市第三中学2016-2017学年度高三英语寒假作业自测题(一)学校:___________姓名:___________班级:___________考号:___________第二节:完形填空阅读下面短文,掌握其大意,然后从21 ~ 40各题所给的四个选项(A、B、C、D)中,选出最佳选项,并在答题纸上将该选项标号涂黑.Years ago,I drove into a service station to get some gas。

It was a beautiful day,and I was feeling great. As I walked into the station to ___21___ the gas, the owner said to me, ”How do you feel?” That seemed like a ___22___ question, but I felt fine and told him ___23___。

"You don’t look well,” he replied. This ___24___ me completely by surprise. A little less ___25___, I told him that I had never felt better. Without ___26___,he continued to tell me how bad I looked and that my skin appeared ___27___.By the time I left the service station, I was feeling a little ___28___. About a block away, I ___29___ to the side of the road to look at my face in the mirror。

安徽省舒城中学2017届高三数学理科寒假作业

安徽省舒城中学2017届高三数学理科寒假作业
3 3 t sin
3
(t
为参数),
且直线 l 与曲线 C1 交于 A,B 两点.
(Ⅰ)求曲线 C1 的直角坐标方程,并说明它是什么曲线;
(Ⅱ)设定点 P 0, 3 ,求 1 1 . PA PB
23.(本小题满分 10 分)选修 4—5:不等式选讲
设函数 f x 2x 3 x 1 .
(1)n
ln(n
1)
. M n
n(n 1) 2
ln
2
(1)n
ln(n
1)

20.(本小题满分 12 分)
【解】(Ⅰ)设抛物线方程为: x2 2 py ,又 4+ p 5 ,即 p 2 , 2
抛物线的方程为 x2 4 y .
(Ⅱ)由(Ⅰ),可设直线
BC
的方程为:
y
k(x
x2 )
x22 4
(k
(Ⅰ)若 ADC 3 ,求 AD 的长; 4
(Ⅱ)若
BD
2DC

ACD
的面积为
4
2 3
,求
sin BAD sin CAD
的值.
A
B
D
C
18.(本小题满分 12 分)已知等差数列an的前 n 项和为 Sn 且 a1 2, S5 30 ,数列 bn 的前 n 项和为Tn ,且Tn 2n 1.
(Ⅰ)求数列 an , bn 的通项公式; (Ⅱ)设 cn ln bn (1)n ln Sn ,求数列cn的前 n 项和 M n .
D. a≤0 或 a 1
()
①函数 y f x 1 与函数 y f 1 x 的图象关于直线 x 1 对称;
②若函数 f x 2为奇函数,则 f 1 f 2 f 3 0 ;

青浦区2017学年高三年级第二次学业质量调研测试

青浦区2017学年高三年级第二次学业质量调研测试

青浦区2017学年高三年级第二次学业质量调研测试物理试卷(时间60分钟,满分100分)2018.04全卷包括三大题,第一大题为单项选择题,第二大题为填空题,第三大题综合题。

一、单项选择题(共40分,1到8题每小题3分,9到12题每小题4分)1.下列物理量中,属于标量的是()A.电流强度B.电场强度C.磁感应强度D.引力场强度(即重力加速度)2.下列四种电磁波中,最容易表现衍射现象的是()A.红外线B.紫外线C.无线电波D.γ射线3.下列论述中,能够揭示原子核有复杂结构的是()A.卢瑟福通过α粒子散射实验建立原子核式结构模型B.汤姆孙发现了电子C.贝克勒尔发现天然放射性现象D.伦琴发现X射线4.某单色光照射某金属时不能产生光电效应,下列措施中可能使该金属产生光电效应的是()A.延长光照时间B.增大光的强度C.换用频率较低的光照射D.换用波长较短的光照射5.一个物体静止在斜面上时,正确表示斜面对物体作用力F方向的是图中的()6.如图所示,O是水面上一波源,实线和虚线分别表示某时刻的波峰和波谷,A是挡板,B是小孔。

若不考虑波的反射因素,则经过足够长的时间后,水面上的波将分布于()A.整个区域B.阴影Ⅰ以外区域C.阴影Ⅱ以外区域D.阴影II和III以外的区域7.如图所示,一定质量的理想气体由状态A变化到状态B,则A、B 两个状态的密度相比()A.气体密度减小B.气体密度不变C.气体密度增大D.气体密度先增大后减小ⅠⅡⅢABOPT 0AB8.如图甲所示直线是一条电场线,A 、B 是该线上的两点。

一正电荷由A 点以一定初速度沿电场线从A 运动到B ,运动过程中的v -t 图线如图乙所示,则下列说法中正确的是( )A .该电场是非匀强电场B .A 、B 两点的电势相比一定是φA <φBC .A 、B 两点的场强大小相比一定是E A <E BD .该电荷在两点的电势能大小相比一定是E pA >E pB 9.雨滴从高空静止下落,受到的空气阻力随雨滴速度的增大而增大,则下落过程中雨滴的速度随时间变化的规律是( )10.如图所示的电路,电池内阻不计,当R 2的滑动触头P 由a 端向b 端滑动过程中,电流表示数A 和电压表示数V 将( )A . V 不变, A 变大B . V 不变, A 变小C . V 变小, A 变大D . V 变小, A 变小11.在同一平面上有a 、b 、c 三根等间距平行放置的长直导线,依次载有电流强度大小为1A 、2A 和3A 的电流,各电流的方向如图所示,则导线b 所受的合力方向是( )A .水平向左B .水平向右C .垂直纸面向外D .垂直纸面向里12.如图所示,A 是一均匀小球,B 是个1/4圆弧形滑块,最初A 、B 相切于小球的最低点,一切摩擦均不计。

2017届河北省保定市高三上学期期末调研考试语文试题及答案

2017届河北省保定市高三上学期期末调研考试语文试题及答案

2017学年度第一学期高三期末调研考试语文试题注意事项:1.本试卷分第I卷(阅读题)和第II卷(表达题)两部分,共150分。

考试时间150分钟.答卷前,考生务必将自己的姓名、准考证号填写在答题卡上.井2.作答时请认真阅读答题卡上的注意事项,将答案写在答题卡上,在本试卷上答题无效.3.考试结束后,将答题卡收回。

第I卷阅读题(70分)甲必考题一、现代文阅读(9分,每小题3分)阅读下面的文字完成1-3题:管仲的经济思想中,最为奇特的一项是鼓励消费,他甚至倡导奢侈,这在古往今来的治国者中可谓仅见,在《管子》一书中就有一篇奇文《侈靡篇》。

中国历代的治国思想向来以倡导节俭为正途,这显然是长期短缺经济的必然产物。

然而管仲却提出“俭则伤事”的观点,在他看来,大家都不消费,就会造成商品流通的减少,从而妨碍生产营利的活动,故曰“伤事”。

(见《管子·乘马》:“俭则金贱,金贱则事不成,故伤事。

”)要如何才能推动消费?他的答案是,多多消费,甚至无比奢侈地去消费。

(见《管子·侈靡》:“问曰:兴时化若何?莫善于侈靡。

”)管仲的这一论述曾经迷惑了此后数千年的中国学者,很多他的信奉者言及于此,要么视而不见,要么顾左右而言他,要么百般替管仲声辩。

直到近世,历史学家郭沫若才给予了合理的解释。

郭氏认为:“他是肯定享乐而反对节约的,他是重视流通而反对轻视商业的,他是主张全面就业而反对消极赈济的,为了能够全面就业,他主张大量消费,甚至主张厚葬。

他的重点是放在大量消费可以促进大量生产这一面。

因而在生产方面该如何进行,如何改进技术之类的话,他就说得很少,几乎可以说没有。

”(郭沫若:《侈靡篇的研究》,《历史研究》1954年第3期。

)管仲倡导奢侈的理由是,“丹砂之穴不塞,则商贾不处。

富者靡之,贫者为之”。

就是说,只要不人为地堵塞利源,商贾就会日夜不息地从事营运而不知休息,而富裕的人只有不断地消费,贫穷的人才有工作可做。

为了强化自己的观点,管仲甚至做过极端的比喻,他建议在煮蛋之前应先加雕绘,在烧柴之前要先加雕刻——“雕卵然后瀹之,雕橑然后爨之。

四川省2017最新届高三上学期寒假作业英语2含答案

四川省2017最新届高三上学期寒假作业英语2含答案

2017届高三英语寒假作业(二)2017.1(考试时间:120分钟满分:150分)第Ⅰ卷(选择题,共90分)第一部分英语知识运用(共两节,满分40分)第一节语法和词汇知识(共10小题;每小题1分,满分10分)1. I've lived in New York and Chicago, but don't like ________ of them very much.A. eitherB. any C.each D. another2. John has put on so much weight recently that his mother has to ______ all his trousers to his measure.A. let outB. give awayC. bring inD. make up3. Measures must be taken to prevent pollution ________ happily.A.from we live B.for us to live C.us living D.from our living4. Apple has given in to intense pressure from Chinese state media about its customer service practices, ________ to consumers in its second-largest market.A.apologizing B.apologize C.having apologized D.to apologize5. When I was a child, my father ______ read me a story at night before bedtime.A.would B.should C.could D.might6. In the past ten years, a lot of trees _____ on the hills in my hometown.A. plantedB. were plantedC. have plantedD. have been planted7. What the doctors really doubt is ____ my mother will recover from the serious disease soon.A.when B.if C.whether D.what8. One can’t do extreme sports _________ he or she has had some training.A. ifB. unlessC. onceD. since9. Members of the Beijing Wheelchair Dance Training Base, was set up in 2009, are able to manage their wheelchairs perfectly.A.who B.which C.what D.that10. A new survey shows that 54 percent of Americans do not take prescription medicines ______though they are important to their health.A. as they instructB. as were instructedC. as to be instructedD. as instructed第二节完型填空(共20小题;每小题 1.5分,满分30分)阅读下面短文,从短文后各题所给的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项。

江苏省如皋市2017届高三上学期教学质量调研(三)数学试题 含附加题 扫描版含答案

江苏省如皋市2017届高三上学期教学质量调研(三)数学试题 含附加题 扫描版含答案

2016-2017学年度高三年级教学质量调研(三)理科数学附加题21. 已知数列错误!未找到引用源。

满足错误!未找到引用源。

.(1)求错误!未找到引用源。

并猜想出数列错误!未找到引用源。

的通项公式;(2)用数学归纳法证明(1)的猜想.2016~2017学年度高三年级第一学期教学质量调研(三)参考答案及评分标准1.错误!未找到引用源。

2. 1 3.错误!未找到引用源。

4. 5.错误!未找到引用源。

6. 7. 5 8. 126 9. -2 10.错误!未找到引用源。

11.错误!未找到引用源。

12.错误!未找到引用源。

13. 17 14.错误!未找到引用源。

15.解:(1)在错误!未找到引用源。

中,由错误!未找到引用源。

,且错误!未找到引用源。

得,错误!未找到引用源。

. …………………………………………2分所以错误!未找到引用源。

=错误!未找到引用源。

=错误!未找到引用源。

. …………………………………………6分(2)由错误!未找到引用源。

,且错误!未找到引用源。

得,错误!未找到引用源。

. ……………………8分所以错误!未找到引用源。

=错误!未找到引用源。

=错误!未找到引用源。

. ………………………………10分又错误!未找到引用源。

,所以错误!未找到引用源。

,…………………………………………12分在错误!未找到引用源。

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2017届高三第二次教学质量检测数学理试题(12页有答案)

2017届高三第二次教学质量检测数学理试题(12页有答案)

-1012}012}01}-101}-1012} 23B.5A.4C.D.3[+高三年级第二次教学质量检测试题理科数学注意事项:1.本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。

答卷前,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上。

2.回答第Ⅰ卷时,选出每小题答案后,用2B铅笔把答题卡上对应题目的答案标号涂黑。

如需改动,用橡皮擦干净后,再选涂其它答案标号。

写在本试卷上无效。

3.回答第Ⅱ卷时,将答案写在答题卡上,写在本试卷上无效。

4.考试结束后,将本试卷和答题卡一并交回。

第Ⅰ卷(选择题共60分)一.选择题:本大题共12个小题,每小题5分,满分60分,在每小题给出的四个选项中,只有一项是符合题目要求的.1.已知集合A={-2,,,,,B={x|-2<x≤2},则A B=A.{-1,,,B.{-1,,C.{-2,,,D.{-2,,,,2.复数2-i1+i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3.已知向量a=(2,-1),b=(3,x),若a⋅b=3,则x=A.3B.4C.5D.64.已知双曲线x2y2-a b23=1的一条渐近线方程为y=x,则此双曲线的离心率为457445.已知条件p:x-4≤6;条件q:x≤1+m,若p是q的充分不必要条件,则m的取值范围是A.(-∞,-1]B.(-∞,9]C.1,9]D.[9,∞)6.运行如图所示的程序框图,输出的结果S=A.14B.30C.62D.1268.已知α,β是两个不同的平面,l,m,n是不同的直线,下列命题不正确的是A.πA.332D.27.(x-1)n的展开式中只有第5项的二项式系数最大,则展开式中含x2项的系数是xA.56B.35C.-56D.-35...A.若l⊥m,l⊥n,m⊂α,n⊂α,则l⊥αB.若l//m,l⊂/α,m⊂α,则l//αC.若α⊥β,αβ=l,m⊂α,m⊥l,则m⊥βD.若α⊥β,m⊥α,n⊥β,,则m⊥n9.已知f(x)=sin x+3cos x(x∈R),函数y=f(x+ϕ)的图象关于直线x=0对称,则ϕ的值可以是πππB.C.D.263410.男女生共8人,从中任选3人,出现2个男生,1个女生的概率为1528,则其中女生人数是A.2人B.3人C.2人或3人D.4人11.已知抛物线y2=4x,过焦点F作直线与抛物线交于点A,B(点A在x轴下方),点A与1点A关于x轴对称,若直线AB斜率为1,则直线A B的斜率为12B.3C.12.下列结论中,正确的有①不存在实数k,使得方程x ln x-1x2+k=0有两个不等实根;2②已知△ABC中,a,b,c分别为角A,B,C的对边,且a2+b2=2c2,则角C的最大值为π6;③函数y=ln与y=ln tan x2是同一函数;④在椭圆x2y2+a2b2=1(a>b>0),左右顶点分别为A,B,若P为椭圆上任意一点(不同于A,B),则直线PA与直线PB斜率之积为定值.A.①④B.①③C.①②D.②④13.已知等比数列{a}的前n项和为S,且a+a=5n2414.已知实数x、y满足约束条件⎨y≥2,则z=2x+4y的最大值为______.⎪x+y≤6②若a∈(0,1),则a<a1+11-x是奇函数(第Ⅱ卷(非选择题共90分)本卷包括必考题和选考题两部分.第13题~21题为必考题,每个试题考生都必须做答.第22题、第23题为选考题,考生根据要求做答.二.填空题:本大题共4小题;每小题5分,共20分.5,a+a=,则S=__________.n13246⎧x≥2⎪⎩15.一个几何体的三视图如图所示,则这个几何体的外接球的半径为__________.16.下列命题正确是.(写出所有正确命题的序号)①若奇函数f(x)的周期为4,则函数f(x)的图象关于(2,0)对称;③函数f(x)=ln;三.解答题:本大题共6小题,共70分,解答时应写出必要的文字说明、证明过程或演算步骤.17.(本小题满分12分)在△ABC中,角A、B、C的对边分别为a,b,c,且a=3,b=4,B=A+高三理科数学试题和答案第3页共6页π2., 20 40 60 80 ,(1)求 cos B 的值;(2)求 sin 2 A + sin C 的值.18.(本小题满分 12 分)如图,三棱柱 ABC - A B C 中,侧棱 AA ⊥ 平面 ABC , ∆ABC 为等腰直角三角形,1 1 1 1∠BAC = 90 ,且 AA = AB , E , F 分别是 C C , BC 的中点.1 1(1)求证:平面 AB F ⊥ 平面 AEF ;1(2)求二面角 B - AE - F 的余弦值.119.(本小题满分 12 分)某市随机抽取部分企业调查年上缴税收情况(单位:万元),将所得数据绘制成频率分布直方图(如图),年上缴税收范围是[0 100],样本数据分组为第一组[0, ),第二组[20, ),第 三组 [40, ),第四组 [60, ),第五组 [80 100].(1)求直方图中 x 的值;(2)如果年上缴税收不少于 60 万元的企业可申请政策优惠,若共抽取企业 1200 家,试估计有多少企业可以申请政策优惠;(3)从所抽取的企业中任选 4 家,这 4 家企业年上缴税收少于 20 万元的家数记为 X ,求 X 的分布列和数学期望.(以直方图中的频率作为概率)= 1(a > b > 0) 经过点 P (2, 2) ,离心率 e = ,直线 l 的方程为 220.(本小题满分 12 分)已知椭圆 C : x 2 y 2+ a 2 b 22 2x = 4 .(1)求椭圆 C 的方程;(2)经过椭圆右焦点 F 的任一直线(不经过点 P )与椭圆交于两点 A , B ,设直线 AB 与l 相交于点 M ,记 P A , PB , PM 的斜率分别为 k , k , k ,问:是否存在常数 λ ,使得1 2 3k + k = λ k ?若存在,求出 λ 的值,若不存在,说明理由.12321.(本小题满分 12 分)已知函数 f ( x ) = ax + ln x ,其中 a 为常数,设 e 为自然对数的底数.(1)当 a = -1 时,求 f ( x ) 的最大值;(2)若 f ( x ) 在区间 (0, e ] 上的最大值为 -3 ,求 a 的值;(3)设 g ( x ) = xf ( x ), 若 a > 0, 对于任意的两个正实数 x , x ( x ≠ x ) ,1 2 1 2证明: 2 g ( x 1 + x 2) < g ( x ) + g ( x ) .1 2请考生在第 22、23 二题中任选一题做答,如果多做,则按所做的第一题记分.做答时,用⎪⎪ 5⎩17.解:(1)∵ B = A + , ∴ A = B -, ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 1 分 ==2B 铅笔在答题卡上把所选题目对应的题号涂黑.22.(本小题满分 10 分)选修 4-4:坐标系与参数方程⎧3 x =- t + 2 在直角坐标系 xOy 中,直线 l 的参数方程为 ⎨ ( t 为参数),以原点 O 为极点, x⎪ y = 4 t ⎪5轴正半轴为极轴建立极坐标系,圆C 的极坐标方程为 ρ = a sin θ .(1)若 a = 2 ,求圆 C 的直角坐标方程与直线 l 的普通方程;(2)设直线 l 截圆 C 的弦长等于圆 C 的半径长的 3 倍,求 a 的值.23.(本小题满分 10 分)选修 4-5:不等式选讲已知函数 f ( x ) = 2x -1 + 2x + 5 ,且 f ( x ) ≥ m 恒成立.(1)求 m 的取值范围;(2)当 m 取最大值时,解关于 x 的不等式: x - 3 - 2x ≤ 2m - 8 .高三第二次质量检测理科数学答案一.ADABD CCABC CA二.13.631614.20 15. 61 16.①③ππ2 23 4 又 a = 3, b = 4 ,所以由正弦定理得 ,sin Asin B34所以, ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅3 分- cos B sin B所以 -3sin B = 4cos B ,两边平方得 9sin 2 B = 16cos 2 B ,3又 sin 2 B + cos 2 B = 1 ,所以 cos B = ± , ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 5 分5π 3而 B > ,所以 cos B = - . ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 6 分2 53 4(2)∵ cos B = - ,∴ sin B = , ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 7 分5 5∴面 ABC ⊥ 面 BB C C..........2 分+ = 则 F (0,0,0) , A ( 22 2 2 2 2 1 ∵ B = A +π2,∴ 2 A = 2 B - π ,∴ sin 2 A = sin(2 B - π ) = - sin 2 B ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 8 分4 3 24= -2sin B cos B = -2 ⨯ ⨯ (- ) = ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 10 分5 5 25又 A + B + C = π ,∴ C = 3π 2- 2 B ,7 24 7 31∴ sin C = - cos 2 B = 1 - cos 2 B = .∴ sin 2 A + sin C = . (12)25 25 25 25分18.解答: (1)证明:∵ F 是等腰直角三角形 ∆ABC 斜边 BC 的中点,∴ AF ⊥ BC .又∵侧棱 AA ⊥ 平面ABC ,11 1∴ AF ⊥ 面 BB 1C 1C , AF ⊥ B 1F .…3 分设 AB = AA = 1 ,则1,EF= , .∴ B F 2 + EF 2 = B E 2 ,∴ B F ⊥ EF ........... 4 分1 11又 AF ⋂ EF = F ,∴ B F ⊥平面 AEF .…1而 B F ⊂ 面 AB F ,故:平面 AB F ⊥ 平面 AEF . ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅5 分1 11(2)解:以 F 为坐标原点, FA , FB 分别为 x , y 轴建立空间直角坐标系如图,设 AB = AA = 1 ,12 2 1,0,0) , B (0, - ,1) , E (0, - , ) ,12 2 1 2 2AE = (- , - , ) , AB = (- , ,1) .… ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 6 分2 2 2 2 2由(1)知, B F ⊥平面 AEF ,取平面 AEF 的法向量:12m = FB = (0, ,1) . ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 7 分14 4 256 4 4 4 644 4 64 4 4 64设平面 B AE 的法向量为 n = ( x , y , z ) ,1由取 x = 3 ,得 n = (3, -1,2 2) (10),分设二面角 B - AE - F 的大小为θ ,1则 cos θ=|cos <>|=| |= .由图可知θ 为锐角,∴所求二面角 B - AE - F 的余弦值为.… ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 12 分119.解答: 解:(I )由直方图可得: 20 ⨯ (x + 0.025 + 0.0065 + 0.003 ⨯ 2) = 1解得 x = 0.0125 .⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 2 分(II )企业缴税收不少于 60 万元的频率 = 0.003 ⨯ 2 ⨯ 20 = 0.12 , ∴1200 ⨯ 0.12 = 144 .∴1200 个企业中有144 个企业可以申请政策优惠.⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 4 分(III ) X 的可能取值为 0,1,2,3,4 .由(I )可得:某个企业缴税少于 20 万元的概率 = 0.0125 ⨯ 20 = 0.25 =分1 3 81 1 3 27P ( X = 0) = C 0 ( )0 ( )4 = P ( X = 1) = C 1 ( )1 ( )3 = 41 3 27 1 3 3P ( X = 2) = C 2 ( )2 ( )2 = P ( X = 3) = C 3 ( )3 ( )1 =4 4 14 (5)X0 1 2 3 44 4 256∴ E ( X ) = 0 ⨯ 81+ = 1 ① 又e = , 所以 = = 4, a = 8,b 1 + 2k 2 1 + 2k 2, x x = x - 2 x - 22, k = k = 2k - 2 4 - 2 2P8125627 64 27 64 3 64 1 2561 3 1P ( X = 4) = C 4 ( )4 ( )0 =4...................................... 10 分............. 11 分27 27 3 1+ 1⨯ + 2 ⨯ + 3 ⨯ + 4 ⨯= 1. ....12 分25664 64 64 25620.解:(1)由点 P (2, 2) 在椭圆上得, 4 2 2 c 2 a 2 b 2 2 a 2②由 ①②得 c 2 2 2 = 4 ,故椭圆 C 的方程为 x 2 y 2+ = 1 ……………………..4 分 8 4(2)假设存在常数 λ ,使得 k + k = λ k .1 23由题意可设 AB 的斜率为k , 则直线AB 的方程为 y = k ( x - 2) ③代入椭圆方程x 2 y 2+ = 1 并整理得 (1+ 2k 2 ) x 2 - 8k 2 x + 8k 2 - 8 = 0 8 48k 2 8k 2 - 8设 A ( x , y ), B ( x , y ) ,则有 x + x = ④ ……………6 分 1 1 2 2 1 2 1 2在方程③中,令 x = 4 得, M (4,2 k ) ,从而 k = y 1 - 2 y 2 - 21 2 1,3 2= k - .又因为 A 、F 、B 共线,则有 k = k AF = k BF ,即有y当 a = -1 时, f ( x ) = - x + ln x , f ' ( x ) = -1 + 1①若 a ≥ - ,则 f ' ( x ) ≥ 0 ,从而 f ( x ) 在 (0, e ] 上是增函数,y1=2= k ……………8 分x - 2x - 21 2所以 k + k = 1 2 y - 2 y - 2 1 + 2 x - 2 x - 21 2= y y 1 11 +2 - 2( + )x - 2 x - 2 x - 2 x - 2 1 2 1 2= 2k - 2x 1 + x 2 - 4x x - 2( x + x ) + 41 212⑤ ……………10 分将④代入⑤得 k + k = 2k - 2 1 2 8k 2- 41 + 2k2 8k 2 - 8 8k 2- 2 + 41 + 2k2 1 + 2k 2= 2k - 2 ,又 k = k - 32 2 ,所以 k + k = 2k 1 2 3 . 故存在常数 λ = 2 符合题意…………12 分21.【解答】解:(1)易知 f ( x ) 定义域为 (0, +∞) ,1 - x= ,x x令 f ' ( x ) = 0 ,得 x = 1 .当 0 < x < 1 时, f ' ( x ) > 0 ;当 x > 1 时, f ' ( x ) < 0 . (2)分∴ f ( x ) 在 (0,1) 上是增函数,在 (1,+∞) 上是减函数.f ( x )max= f (1) = -1.∴函数 f ( x ) 在 (0, +∞) 上的最大值为 -1 . ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 4 分(2)∵ f '( x ) = a + 1 1 1, x ∈ (0, e ], ∈ [ , +∞) .x x e1e∴ f ( x )max= f (e ) = ae + 1 ≥ 0 ,不合题意. ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 5 分11② 若 a < - ,则由 f ' ( x ) > 0 ⇒ a +ex> 0 ,即 0 < x < -1a11由 f ' ( x ) < 0 ⇒ a +< 0 ,即 - < x ≤ e . ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 6 分xa从而 f ( x ) 在 (0, - ) 上增函数,在 (- (3)法一:即证 2a ( x + x 2) + 2( 12 )ln( 222 2 x 2 x21 1a a, e ) 为减函数∴ f ( x ) max 1 1 = f (- ) = -1 + ln(- ) a a1 1令 -1 + ln(- ) = -3 ,则 ln(- ) = -2a a∴- 11= e -2 -e 2 < -a ,即 a = -e 2.∵ e ,∴ a = -e 2 为所求 ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 8 分1 1 x + x x + x2 2 22 ) ≤ ax 2 + ax 2 + x ln x + x ln x 1 2 1 1 222a ( x + x ( x + x )21 2 )2 - ax 2 - ax 2 = a ⋅[ 1 21 2- x 2 - x 2 ]1 2( x - x )2= -a 1 2 2< 0 ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 9 分另一方面,不妨设 x < x ,构造函数1 2k ( x ) = ( x + x )ln(1x + x12) - x ln x - x ln x ( x > x )1 1 1x + xx + x则 k ( x ) = 0 ,而 k ' ( x ) = ln 1 - ln x = ln 1 ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 10 分1x + x由 0 < x < x 易知 0 < 11< 1 , 即 k ' ( x ) < 0 , k ( x ) 在 ( x , +∞) 上为单调递减且连续, 1x + x故 k ( x ) < 0 ,即 ( x + x )ln( 11) < x ln x + x ln x 1 1相加即得证⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 12 分1法二: g ' ( x ) = 2ax + 1 + ln x , g '' ( x ) = 2a + > 0.........9 分x故 g ' ( x ) 为增函数,不妨令 x > x 21令 h ( x ) = g ( x ) + g ( x ) - 2 g (1x + x12)( x > x )1h ' ( x ) = g '(x ) - g ' (x + x12) ......... 10 分易知 x > x + x x + x1 , 故h ' ( x ) = g '(x ) - g ' ( 12 2) > 0 (11)分而 h ( x ) = 0 , 知 x > x 时, h ( x ) > 0112(2)圆 C : x 2 + y - a ⎫2∴圆心 C 到直线的距离 d = 2- 8 得 a = 32 或 a = 32 ⎪ -4 x - 4, x < - 523.解 (1) f (x) = ⎨6, - 5⎩ 4 x + 4, x > 22 ≤ x ≤ ⎩3 - x - 2 x ≤4 ⎧ 3 ≤ x < 3 .所以,原不等式的解集为 ⎨⎧x x ≥ - ⎬ .故 h ( x ) > 0 , 即 2 g ( x 1 + x 2) < g ( x ) + g ( x )21 2 (12)分22.解 (1) a = 2 时,圆 C 的直角坐标方程为 x 2 + (y -1)2 = 1 ;直线 l 的普通方程为 4 x + 3 y - 8 = 0 . ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 4 分⎛⎪ = ⎝ 2 ⎭a 2 4 ,直线 l : 4 x + 3 y - 8 = 0 ,∵直线 l 截圆 C 的弦长等于圆 C 的半径长的 3 倍,3a1 a5 = 2 ⨯ 2 ,11 .⎧2 ⎪1 ⎪2 ≤ x ≤ 2 ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 2 分⎪1 ⎪ ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 7 分⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 10 分当 - 5 12 时,函数有最小值 6 ,所以 m ≤ 6 . ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 5 分另解:∵ 2x -1 + 2x + 5 ≥ (2x -1) - (2x + 5) = -6 = 6 .∴ m ≤ 6 .(2)当 m 取最大值 6 时,原不等式等价于 x - 3 - 2x ≤ 4 ,⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 6 分等价于 ⎨ x ≥ 3 ⎩ x - 3 - 2x ≤ 4 ⎧ x < 3 ,或 ⎨,⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 8 分可得 x ≥ 3 或 - 11 ⎫ ⎩ 3 ⎭⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 10 分。

吉林省2017届高三寒假作业 数学6 Word版 含答案

吉林省2017届高三寒假作业 数学6 Word版 含答案

高三数学寒假作业(圆锥曲线)本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分,共22小题,共150分,考试时间120分钟,考生作答时将答案答在答题卡上,在本试卷上答题无效。

第Ⅰ卷(选择题,共60分)一、选择题(本大题共12小题,每小题5分,共60分,在每小题给出的四个选项中,只有一项符合题目要求。

)1.圆222210x y x y +-++=的圆心到直线10x y -+=的距离是( )A .12 B .32 CD2.已知双曲线C :22221(0,0)x y a b a b -=>>的离心率为25,则C 的渐近线方程为( )A.14y x =±B.13y x =±C.12y x =± D.y x =±3.抛物线212=y x 截直线62-=x y 所得的弦长等于( )A C .154.双曲线13622=-y x 的渐近线与圆)0()3(222>=+-r r y x 相切,则r=( ) A.3 B.2 C.3 D.65.若抛物线)0(22>=p px y 的焦点在直线022=--y x 上,则该抛物线的准线方程为( )A.2x =-B. 4=xC. 8-=xD. 4-=y6.圆0422=-+x y x 在点)3,1(P 处的切线方程为 ( )A .023=-+y xB .043=-+y xC .043=+-y xD .023=+-y x7.已知抛物线22(0)y px p =>,过其焦点且斜率为-1的直线交抛物线于A ,B 两点,若线段AB 的中点的纵坐标为-2,则该抛物线的准线方程为 A .x=l B .2x = C .1x =- D .2x =-8.双曲线22221x y a b -=(0,0a b >>)的两个焦点为12,F F ,若双曲线上存在一点P ,满足122PF PF =,则双曲线离心率的取值范围为 ( ) A .(]1,3 B .()13, C .()3+∞, D .[)3,+∞9.已知点(1,3)A ,(2,1)B --,若直线l :(2)1y k x =-+与线段AB 没有交点,则k 的取值范围是( ) A .12k ≥B .2k ≤-C .12k ≥或2k ≤- D .122k -≤≤10.已知双曲线的顶点与焦点分别是椭圆的22221y x a b+=(0a b >>)焦点与顶点,若双曲线的两条渐近线与椭圆的交点构成的四边形恰为正方形,则椭圆的离心率为 A .13 B .12C .3D .211.已知抛物线2:8C y x =的焦点为F ,准线与x 轴的交点为K ,点A 在C 上且AK =,则AFK ∆的面积为( )A .4B .8C .16D .3212.如果方程)04(02222>-+=++++F E D F Ey Dx y x 所表示的曲线关于x y =对称,则必有( )。

2017最新届高三寒假作业(7)英语含答案]

2017最新届高三寒假作业(7)英语含答案]

贵州省2016-2017学年高三寒假作业(7)英语答案题号一二三四五六总分得分评卷人得分一、单项填空(共15小题:每小题1分,满分15分) 从A. B. C. D四个选项中,选出可以填入空白处的最佳选硕,并在答题卡上将该项涂黑。

1.More attention must be paid____ the endangered animals.A, protect B. to protect C. to protecting D. protecting2.The professor is telling the students ______ he did last.A. as amusing a story asB. such an amusing story thatC. as the same amusing asD. a story the same amusing as3.We need fifteen more people _____our team to do the job.A butB exceptC as wellD besides4.We haven`t had any success _______A before longB so longC by farD so far5.Helen had to shout ________ above the sound of the music.A. making herself hearB. to make herself hearC. making herself heardD. to make herself heard6.He got seriously _____ in the battle.A. damagedB. harmedC. hurtD. wounded7.Maintaining (维持) peace and stability of the South China Sea and the East China Sea will certainly ____ a more prosperous Asian-Pacific area.A. contribute toB. respond toC. belong toD. appeal to8.Don’t be too proud of yourself. Do you really think you are ______?A.anybodyB. somebodyC. nobodyD. everybody9.It is not unusual for workers in that region_______ .A. to be paid more than a month lateB. to be paid later than more a monthC. to pay later than a month moreD. to pay later more than a month10.More than one girl ____ late for class this morning.A areB isC wasD were11.________, his idea was accepted by all the people at the meeting.A. Strange as might it soundB. As it might sound strangeC. As strange it might soundD. Strange as it might sound12.—______ that she met her friend, whom she hadn’t seen for ten years?—It was at about 12 noon ______ she wandered aimlessly around the streets..A. How was it; whenB. Why was it; thatC. Where was it; thatD. When was it; when13.You only had meat and fish yesterday. If you had eaten vegetables, they easily.A. would digestB. digestedC. will digestD. would have digested14.The frightened thief hid himself in the dark corner of the yard,,staringat the open door.A.quiet and cold B.quietly and coldlyC.quiet and coldly D.quietly and cold15. ______ affects your performance in an exam, so you need to learn how to keepyour emotions under control.A. How nervous are youB. How you are nervousC. How nervous you areD. How are you nervous评卷人得分二、完型填空(共20小题;每小题 1.5分,满分30分)阅读下面短文,从短文后各题所给的四个选项(A, B, C和D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑When Glen Kruger picked a small cat from an animal shelter, he did not expect much. Yet right from the start, eight years ago, there was an uncommon connection between him and the small black cat. He __16__ her Inky.17__ playmates,” Kruger, “I grew up on a hundred-acre farm and had only cats __the seventy-year-old man, says. “My h earing was damaged by the __18__ of farm equipment, so I learned to connect with __19__. They react to what they see and what you do.”Inky was a gentle cat, __20__ the house with five other cats. But on a Januarynight in 2009, Inky did __21__ that would set her apart from __22__ cats forever.Kruger had gone down to the basement to __23__ the wood stove for the night. When he was finished, he __24__to the top of the stairs and reached to turn off the lights. In doing so, he slipped and __25__ his back against an old shelf. The heavyshelf came crashing down and sent Kruger down the stairs.__26__ in a pool of blood on the basement floor, Kruger felt __27__ going into shock(休克).He shouted for help, __28__ his wife, Brenda, was asleep in their bedroom at the opposite end of the house. __29__ Kruger noticed Inky watching from the top of the stairs.“Go get Brenda,” Kruger said to Inky.Inky __30__ to the bedroom door and scratched __31__ until Brenda opened it. Then Inky led her to the __32__. Brenda found her husband __33__ the stairs and34__ there,” says called 911. Kruger was rushed to the hospital. “I spent six months __Since the accident, Inky has Kruger. “Although I became lame, I was blessed.” __35__ left Kruger's side.16.A. gave B.chose C.named D.remembered17.A. like B.as C.except D.among18.A. sound B.alarm C.noise D.voice19.A. animals B.friends C.farmers D.neighbors20.A. sharing B.visiting C.dividing D.discovering21.A. anything B.nothing C.something D.everything22.A. familiar B.lovely C.ordinary D.outstanding23.A. shut out B.shut off C.shut down D.shut up24.A. marched B.flew C.struggled D.climbed25.A. bent B.hit C.shook D.pulled26.A. Falling B.Lying C.Appearing D.Thinking27.A. it B.itself C.him D.himself28.A. and B.but C.or D.so29.A. Thus B.Otherwise C.Then D.Rather30.A. walked B.ran C.returned D.withdrew31.A. rapidly B.suddenly C.madly D.urgently32.A. bedroom B.basement C.yard D.house33.A. at the bottom of B.in the middle of C.at the top of D.in the front of 34.A. regretting B.resting C.relaxing D.recovering35.A. never B.ever C.still D.already评卷人得分三、阅读理解(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A18.阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。

2017届高三寒假作业六 数学理科

2017届高三寒假作业六      数学理科

2017届高三寒假作业六 数学(理)一、选择题:本大题共12小题,每小题5分,共60分,在每小题给出的四个选项中,只有一项是符合题目要求的.1.已知集合A={x|x 2﹣16<0},B={﹣5,0,1},则 A .A∩B=∅B .B ⊆AC .A∩B={0,1}D .A ⊆B2.已知复数231i z i-=+(i 为虚数单位),则z 在复平面内对应的点位于A .第一象限B .第二象限C .第三象限D .第四象限3.某城市对机动车单双号限行进行了调查,在参加调查的2548名有车人中有1560名持反对意见,2452名无车人中有1200名持反对意见,在运用这些数据说明“拥有车辆”与“反对机动车单双号限行”是否有关系时,用什么方法最有说服力 A .平均数与方差 B .回归直线方程C .独立性检验D .概率4.已知tan (π﹣α)=﹣2,则=+αα2cos 2cos 1A .﹣3B .52C .3D .25-5.阅读右边的程序框图,若输入的a 、b 、c 分别是1、2、3,则输出的a 、b 、c 分别是( ) A .3、1、2B .1、2、3C .2、1、3D .3、2、1 6.在△ABC 中,sinA=54,6=⋅AC AB ,则△ABC 的面积为 A .3B .512C .6D .47.一个三棱锥的顶点在空间直角坐标系O xyz -中的坐标分别是(0,0,1),(1,0,0),(2,2,0),(2,0,0),画该三棱锥三视图的俯视图时,从x 轴的正方向向负方向看为正视方向,从z 轴的正方向向负方向看为俯视方向,以xOy 平面为投影面,则得到俯视图可以为8.已知点P (x ,y )是抛物线y 2=4x 上任意一点,Q 是圆C :(x+2)2+(y ﹣4)2=1上任意一点,则|PQ|+x 的最小值为 A .5 B .4C .3D .29.已知实数x ,y 满足⎪⎩⎪⎨⎧≥≤-+≥-+m y y x y x 0401,若目标函数z=2x+y 的最大值与最小值的差为2,则实数m 的值为A .4B .3C .2D .21-10.已知函数)sin()(ϕω+=x A x f 的图象如图所示,则该函数的解析式可能是A .)623sin(43)(π+=x x f B .)5154sin(54)(+=x x f C .)665sin(54)(π+=x x f D .)5132sin(54)(-=x x f 11.已知双曲线)0,0(12222>>=-b a by a x 的左、右焦点分别F 1(﹣c ,0),F 2(c ,0),若双曲线上存在点P ,使得c ·sin ∠PF 1F 2=a ·sin ∠PF 2F 1≠0,则该曲线的离心率e 的取值范围是 A .(1,2) B .(1,2] C .(1,12+] D . (1,12+)12.若函数f (x )为定义在R 上的奇函数,其导函数为f ′(x ),对任意实数x 满足)(2)('2x xf x f x ->,则不等式)31()13()(22x f x x f x -⋅-<⋅的解集是A .),(∞+41B .),(410C .,(41-∞D .)(,(∞+∞4141-本卷包括必考题和选考题两部分.第13题~第21题为必考题,每个试题考生都必须做答.第22题~第24题为选考题,考生根据要求做答.NAD MBEC二、填空题:本大题共4小题,每小题5分.13.函数⎩⎨⎧≤<-≤≤=)21(2)10()(2x x x x x f 的图象与x 轴所围成的封闭图形的面积为 .14.有一球内接圆锥,底面圆周和顶点均在球面上,其底面积为3π,已知球的半径R =2,则此圆锥的体积为____.15.已知三角形ABC 中,三边长分别是a ,b ,c ,面积S=a 2﹣(b ﹣c )2,b+c=8,则S 的最大值是 . 16.已知10()(21)f x x =-1098109810a x a x a x a x a =+++⋅⋅⋅++,则222223344C a C a C a +++21010C a ⋅⋅⋅+= .三、解答题:解答应写出文字说明.证明过程或演算步骤 17.(本小题满分12分)已知数列}1{n a 是等差数列,且7234,81a a a == (1)求{a n }的通项公式(2)若)(1++∈=N n a a b n n n ,求数列{b n }的前n 项和S n .18.(本小题满分12分)2016年,百年名校银川一中即将迎来110周年校庆。

2016-2017学年度高三第一学期物理物理寒假作业

2016-2017学年度高三第一学期物理物理寒假作业

2016-2017学年度高三物理寒假作业(3)班级________ 姓名_________ 座号__________一、单选题(24分)14、质量为m A 和m B 的小球与劲度系数均为k 的轻弹簧L 1和L 2连接如图,静止时,两弹簧伸长量分别为x 1和x 2,则( )A .只要m A =mB ,有x 1=x 2 B .只要m A >m B ,有x 1<x 2C .只要m A <m B ,有x 1<x 2D .只要不超出弹性限度,始终有x 1>x 215、甲、乙、丙三船在同一河流中渡河,船头和水流方向如图,已知三船在静水中的速度均大于水流的速度v 0,则( ) A.甲船可能垂直到达对岸 B.乙船可能垂直到达对岸 C.丙船可能垂直到达对岸 D.都不可能垂直到达对岸16、美国航空航天局(NASA)于2009年2月11日晚宣布,美国一颗通信卫星10日与一颗已报废的俄罗斯卫星在太空中相撞,相撞产生的大量碎片对国际空间站等在轨太空设备都造成了潜在威胁。

NASA 表示,这是人类历史上首次两颗完整在轨卫星相撞事故。

新闻发言人凯利·汉弗莱斯表示,撞击地点位于西伯利亚上空约500英里处(约805公里)。

发生相撞的分别是美国1997年发射的“铱33”卫星和俄罗斯1993年发射的“宇宙2251”卫星(据说已经废弃了10年)。

前者重约560千克,后者重约900千克。

假设两颗卫星相撞前都在离地805公里的轨道上做匀速圆周运动,结合中学物理的知识,下面对于两颗卫星说法正确的是( ) A .二者线速度均大于7.9km/sB .二者同方向运行,由于速度大小不同而相撞C .二者向心力大小相等D .二者向心加速度大小相等 17、用一水平拉力使质量为m 的物体从静止开始沿粗糙的水平面运动,物体的v -t 图象如图所示。

下列表述正确的是( ) A .在0~t 1时间内拉力逐渐增加 B .在0~t 1时间内物体做曲线运动 C .在t 1~t 2时间内拉力的功率不为零D .在t 1~t 2时间内合外力做功12m v 2二、多选题(24分)18、如图所示的电路,水平放置的平行板电容器中有一个带电液滴正好处于静止状态,现将滑动变阻器的滑片P 向右移动,则( ) A .电容器中的电场强度将增大 B .电容器的电容将减小 C .电容器上的电荷量将增大 D .液滴将向上运动19.A 、B 两个物体从同一地点在同一直线上做匀变速直线运动,它们的速度图象如图所示,则( ) A .A 、B 两物体运动方向相反 B .t = 4s 时,A 、B 两物体相遇C .在相遇前,t = 4s 时A 、B 两物体相距最远D .在相遇前,A 、B 两物体最远距离20m20.在竖直向下的匀强电场中,有a 、b 两个带电液滴,分别竖直向上和向下做匀速直线运动,液滴间相互作用力不计,则( )A.a 、b 带同种电荷;B.a 、b 带异种电荷C.a的电势能减小;D.b的重力势能增大21、升降机箱内底部放一个质量为m的物体,当箱从高空某处以初速度v0下落时,其速度-时间图象如图乙所示,以下说法正确的是()A.物体在0~t1时间内加速度值变小B.物体在0~t1时间内做匀减速直线运动C.物体在0~t1时间内处于超重状态D.物体在0~t1时间内处于失重状态三、实验题(15分)22、某同学用如图甲所示的装置测定重力加速度。

高三寒假作业答案参考(语文)

高三寒假作业答案参考(语文)

年高三寒假作业答案参考(语文)
为你提供2017 年高三寒假作业答案参考(语文)相关内容,希望你喜欢,2017 年的你一定会大展宏图的,祝福你!
1、D
2、A
3、D
4、D
5、A
6、C
7、(1)一开始命令石普遇事斟酌情况自行决定,等到出发了,又令他听从淮南行省节制。

(2)普身先士卒追赶他们,放火焚烧城关大门,贼兵恐惧,想要弃城逃跑。

8、“愁”。

直抒胸臆,点出诗人抑郁的情怀。

9、①情景交融,诗歌前两句以迷离的烟波来表达自己的愁情,不仅写出了愁之广,还写出了愁的绵延不绝。

②虚实相生,作者由眼前的实景联想到了历史,一切都随着湖水东流而去,道出了名利的虚无,有一种世事浮沉的消极思想。

10、略
11、(1)D3 分,C2 分,B1 分
(2)前面采用倒序手法,中间主体部分采用顺序手法。

好处:
①文章开头采用倒序手法,既引出了作者的回忆和思索,又激起了读者的兴趣;
②倒叙使文章情节生出波澜,引人入胜;
③中间部分采用顺序的手法,对回忆部分的交代做到了有条不紊。

(3)文中小麻雀:
①是为了突出鸽子的“同情心”和“仗义”的性格;
②是为了衬托鸽子的“忍让”和“大度”;。

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2017届高三寒假作业检测卷20170205一.短语默写:10分1. 对…厌倦2. 利用,使用3. 喜爱,喜欢4. 投降,让步5. 提出,想出6. 以…而自豪7. 气馁8. 很值得做某事9. 作为回报10. 献身于二.单句填空:10分1. When I was a child, Mother would tell me to come home (straight) after school.2. Teachers should not show (prefer) for any one of their children.3. After (graduate), she went to a high school to teach English in her hometown.4. After a few days’treatment in hospital, she made a quick (recover) from her illness.5. Earthquake have happened (frequent) all over the world in recent days.6. After the second (explode), the main train and subway stations were shut down.7. All of us spoke (high) of the 6-year-old boy who saved his mother in the earthquake.8. (bury) in the novel, she didn’t notice her mother standing beside her.9. (judge) from his accent, we know he must come from the north.10. We will do what we can to build China into a (power) country.三.语法填空:10分It is becoming increasingly hard to avoid watching reality television in China, such as the V oice of China, China’s Got Talent, or Super Boy. In American, Big Brother (broadcast) five days a week. Survivor finale appears on the front page of the New York Post after gaining ratings(收视率) that are much (high) than NBA. Americans seem addicted to reality television programs ordinary people compete in weeks ---long contests while being filmed 24 hours a day. But why?One of the most commonly repeated “(true)” about reality TV viewers is that they watch in order to talk with friends about the show, but the explanation is quite (correct).In fact fans of the shows have much stronger desire for status. They are much more likely to agree with statements such as “Reputation is important to me”. It represents a means to get attention. And more attention increases one’s sense of (important). We think we are important if others pay attention to us and unimportant if (ignore).Ordinary people can watch the shows, see people like (them) and imagine that they also could become famous by being on television. is the reality TV show that gives them a sense of being a star in crowd.四.完形填空:30分In my dual profession as an educator and health care provider, I have work with many children infected with the virus causing AIDS. The relationship I have had with these 1 kids have been gifts in my life. They have taught me so many things, 2 I have especially learnedthat great 3 can be found in them.Tyler was born infected with HIV: his mother was also infected. 4 the very beginning of his life, he 5 on medicines to enable him to 6 . When he was five, he had a tube in his chest. At times, he also needed supplemented oxygen to support his 7 .Tyler wasn’t willing to give 8 one single moment of his childhood to this deadly disease. It was not 9 to find him playing and racing around his backyard. All of us who knew Tyler were 10 with his pure joy in being alive and the energy it gave him. Tyler’s mom often teased(戏弄) him by telling him that he moved so 11 she needed to dress him in red. That way, when she 12 through the window to see him playing in the yard, she could quickly find him.13 this dreaded disease arrived. He grew quite 14 and, unfortunately, so did his HIV-infected 15 . Tyler’s mom talked to him about death and 16 him by telling Tyler that she was dying too, and that she would be with him soon in heaven.A few days before his 17 , Tyler asked me over to his hospital bed and 18 , “I might die soon. I’m not 19 . When I die, please dress me in red. Mom 20 she’s coming to heaven, too. I’ll be playing when she gets there, and I want to make sure she can find me.”1.A. ordinary B. small C. injured D. special2.A. however B. therefore C. but D. because3.A. pleasure B. courage C. lesson D. pain4.A. From B. In C. For D. With5.A. insisted B. put C. depended D. lived6.A. stand B. survive C. play D. study7.A. family B. growing C. breathing D. walking8.A. in B. out C. off D. up9.A. usually B. excited C. amused D. lucky10.A. satisfied B. pleased C. infected D. impressed11.A. happily B. fast C. slowly D. proudly12.A. passed B. went C. looked D. got13.A. Finally B. Actually C. Gradually D. Extremely14.A. well B. strong C. good D. ill15.A. teacher B. children C. mother D. doctor16.A. comforted B. raised C. took D. carried17.A. graduation B. dream C. death D. working18.A. cried B. whispered C. asked D. shouted19.A. brave B. scared C. lonely D. moved20.A. begged B. pretended C. promised D. allowed五.阅读理解:30分(A)An elderly carpenter(木匠) was ready to retire. He told his employer of his plans to leave the house building business and live a more leisurely life with his wife enjoying his family. He would miss the paycheck, but he needed to retire.The employer was sorry to see his good worker go and asked if he could build just one morehouse as a personal favor. The carpenter said yes, but in time it was easy to see that his work was not in his work. It was an unfortunate way to end his career.When the carpenter finished his work and the employer came to inspect the house and handed the front-door key to the carpenter. “This is your house,” he said, “my gift to you.”What a shock! What a shame! If he had only known he was building his own house, he would done it all so differently. Now he had to live in the home he had built none too well.So it is with us! We build our lives in a distracted way, reacting rather than acting, willing to put up less than the best. At important points we do not give the job our best effort. Then with a shock we look at the situation we have created and find that we are now living in the house we have built. If we had realized, we would done it differently.Think of yourself as the carpenter. Think about your house. Each day you hammer a nail, place a board, or erect(砌)a wall. Build wisely. It is the only life you will ever build. Even you live it for only one day more, that day deserves to be lived graciously(优雅地). The plaque(匾) on the wall says, “Life is a do-it-yourself project.”Who could say it more clearly? Your life tomorrow will be the result of your attitudes and the choices you make today.1. What can we infer from Paragraph 3?A. The employer thought highly of the house.B. The carpenter was very glad to accept the house.C. The carpenter would regret building the house carelessly.D. The carpenter would stay in the company to work.2. From the passage we can draw a conclusion that .A. the future life isn’t easy for any of us.B. while building a house, we must build it well.C. the future life depends on what you are doing now.D. your future life is quite different from what it is now.3. What does the writer want to tell us from the carpenter?A. Rome isn’t built in a day.B. Where there is a wall, there is a way.C. Put your heart into the thing you are doing.D. Nothing is difficult if you put your heart into it.(B)Mum, Helen Clements, described her fun family trip to Longleat Safari Park turned into a nightmare(噩梦) as their car caught fire while they were surrounded by killer beats.The story happened when the group reached the lions’ area during a visit to the park. Just as they came up to a group of 12 lions, smoke suddenly began to come out of the engine. Helen was so scared that she pressed the horn to ask for help from the park workers, but then flames started to appear. The family was then faced with the dilemma of staying inside the car away from the lions or escaping the deadly fire.Fortunately, the lions were led into a night-time enclosure(围栏) by the workers as the family made their escape from the car. With the family sent to the safety of the park office, the roads were cleared of cars so the fire service could put out the fire. No one was injured in any way and no lions were hurt. Helen said that it was not the workers’ fault. She said, “They were great.”Today speaking of the experience, Helen said: “Looking back at it, we can laugh, but at thatvery moment it was frightening. I think, oh my goodness. Why did it happen in the lion enclosure? Why not while we were at the penguins, or the kangaroos? When the car was filled with more and more smoke and the flames were getting bigger, I was thinking about explosions, just like in films. Luckily we didn’t think about the lions. The cars in front of us were kind of sheltering us from them, so we didn’t really see how close they were. If we had been just 50 yards further along, it would have been a very different story.”1. What does the underlined part “killer beasts” in Paragraph 1 refer to?A. The lions.B. The penguins.C. The flames.D. The kangaroos.2. How did Helen feel when the car caught fire?A. Calm.B. Frightened.C. Excited.D. Angry.3. What can we learn from Paragraph 3?A. The family were taken to the hospital after the accident.B. The fire service cleared the cars from the road after the fire.C. Helen didn’t blame anyone for the accident.D. Helen thought the lions were great.(C)English teenagers are receive compulsory cooking lessons in schools. The idea is to encourage healthy eating to fight against the country’s increasing obesity(肥胖)rate. It’s feared that basic cooking and food preparation skills are being lost as parents turn to pre-prepared convenience food.Cooking was once regarded as an essential part of education in England—even if it was mainly aimed at girls. In recent decades cooking has progressively become a minor activity in schools. But the rising level of obesity, has led to a rethink about the food that children are given and the skills they should be taught. Ed Balls is the minister in charge of schools.“What I want is for young people to be taught how to do basic, simple recipes that like a tomato sauce, a simple curry(咖喱饭菜), a stir-fry---which they can use them at home and in their later life, experiment with, discover the joy of food, having got the basics under control.”The new lessons are due to start in September but some schools without kitchens will be given longer to adapt. There is also likely to be a shortage of teachers with the right skills, since the trend has been to teach food technology rather than practical cooking. Also the compulsory lessons for hands on cooking will only be one hour a week for one term. But the well-known cookery writer, Pru Leith, believes it will be worth it.“If we’d done this thirty years ago we might not have the crisis we’ve got now about obesity and lack of knowledge about food and so on. Every child should know how to cook, not just so that they’ll be healthy, but because it’s a life skill which is a real pleasure and we deny children that pleasure.”The renewed interest in cooking is primarily a response to the level of obesity in Britain which is a amongst the highest in Europe, and according to government figures half of all Britons will be obese in 25 years if current trends are not halted.1. What is the main reason of teenagers’ obesity according to the passage?A. They study all day in the class.B. They have no cooking lessons.C. They don’t have healthy eating.D. They have no physical exercise.2. The underlined word “halted” in the last paragraph probably means .A. continueB. stopC. spreadD. keep3. It can be inferred from the passage that .A. teacher with the right cooking skills in England are badly needed.B. more and more teenagers will be obese in the future in England.C. all the teenagers are interested in the compulsory cooking lessons.D. schools and parents haven’t realized the teenagers’ obesity yet.4. Which of the following might be the best title of the passage?A. Britons Will Be Obese in 25 Years.B. Teenagers’ Increasing Obesity Rate.C. Teenagers Lack of Knowledge about Food.D. Compulsory Cooking Classes六.七选五:10分Many times, we find it very amusing to see people who can keep a smile on their face all the time. It’s kind of annoying, isn’t it? 1 . Let’s see some tips on how to have a positive attitude and see how that can change our lives.2 . It really works! If you’re stuck in a terrible situation or a negative stage of your life, all you have to do is to think of the good times that are going to come after your bad stage gets over. Hope for the best and you will get the best.We always feel good when we help others in some way, right? There’s a sense of achievement, satisfaction and positivity associated with giving and helping. 3 .Being grateful for what you have can help you to be positive. If you’re the type to be whining, complaining and groaning about the thins you don’t have, we must say that you need a reality check. 4 . Look around you and see other people who don’t have enough resources like you do.Forget the regrets of your past. Are you in a depressed mood all the time because you are carrying the burden of a trouble past with you? Then you must realize that every moment you think of a dark past with negativity, you will lose one bright moment of your present and the future. Letting go of your past is the only way you can have a positive attitude all the time.5 . Keeping fit and healthy is a critical tip in having a positive attitude. You might have all the money, success and the luxury in the world, but you won’t be able to enjoy anything if you don’t have good health.A. So try to do a good deed a day and help others with your strengths.B. Being unsatisfied with also be a barrier in helping you to have a positive attitude.C. That’s because we don’t know the advantages of having a positive attitude all the time.D. It’s no use complaining because you have already had a good life.E. Think of the good times you are going to have.F. Make sure you know the importance of good health.G. Try to think about terrible and negative things in your life.参考答案语法填空is broadcast, higher, where, truths, incorrect, a, importance, ignored, themselves, It完形填空DCBAC BCDAD BCADC ACBBC阅读理解(A)CCC (B) ABC (C) CBAD七选五CEADF。

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