2017-2018学年度实验中学高二暑假作业2

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赣州一中2017～2018学年度第二学期暑假作业5(学生版)(完整资料).doc

【最新整理，下载后即可编辑】赣州一中2017～2018学年度第二学期暑假作业5一、单选题1．已知330c c a b<<，则下列选项中错误的是（ D ）A. b a >B. ac bc >C. 0a b c ->D. ln 0a b>2．已知的面积为，，则的最小值为（ A ） A. B. C. D. 3．设为等差数列的前项和，若，，则BA. B. C. D. 4．已知平面向量的夹角为，且，则（ A ）A. B. C. D.5．ABC 的内角A ， B ， C 的对边分别为a ， b ， c ．若ABC 的面积为2224a b c +-，则C =C A. 2π B. 3π C. 4πD. 6π6．设变量满足约束条件则目标函数的最大值为C A. 6 B. 19 C. 21 D. 45 7．已知圆的方程圆心坐标为，则它的半径为（ D ） A. B. C. D. 8．已知直线经过两条直线：，：的交点，且直线的一个方向向量，则直线的方程是（ C ） A. B. C. D. 9．在平面直角坐标系中，记d 为点P （cosθ，sinθ）到直线的距离，当θ，m 变化时，d 的最大值为C A. 1 B. 2 C. 3 D. 4 10．直线分别与轴，轴交于，两点，点在圆上，则面积的取值范围是AA. B. C. D.11．已知数列中，恒为定值，若时，，则（C ）A. B. C. D.12．如图，在ABC∆中，D是AB边上的点，且满足3AD BD=，2AD AC BD BC+=+=，2CD=，则cos A=（ D ）A. 13B. 2C. 14D. 0二、填空题13．不等式的解集是________________．14．设1m>，当实数,x y满足不等式组{21y xy xx y≥≤+≤时，目标函数z x my=+的最大值等于3，则m的值是_____4_____．15．已知{}na，{}n b是公差分别为12,d d的等差数列，且n n nA a b=+，n n nB a b=，若11A=，23A=，则n A=____21n-______；若{}n B为等比数列，则12d d=______0____．16．在中，，是上一点，，且，则_____-4_____．三、解答题17．已知圆C的圆心为()1,2C，半径为1，点()4,1A.（Ⅰ）写出圆C的标准方程，并判断点A与圆C的位置关系；（Ⅱ）若一条光线从点A射出，经x轴反射后，反射光线经过圆心C，求入射光线所在直线的方程.【答案】（Ⅰ）()()22121x y-+-=;点A在圆C的外部（或点A不在圆C上）; （Ⅱ）30x y --=.【解析】（Ⅰ）圆C 的标准方程为： ()()22121x y -+-=()()224112101AC =-+-=>所以点A 在圆C 的外部（或点A 不在圆C 上）;（Ⅱ）由题意可知入射光线所在的直线和反射光线所在的直线关于x 轴对称，所以圆心()1,2C 关于x 轴的对称点()11,2C -在入射光线所在的直线上.又入射光线过点()4,1A所以入射光线所在直线的方程为：()()211241y x ---=---，即： 30x y --=. 18．已知正项等比数列{}n a 满足12,3,26a a a +成等差数列，且24159a a a =．（Ⅰ）求数列{}n a 的通项公式；（Ⅱ）设()31log n n n b a a =+⋅，求数列{}n b 的前n 项和n T ．【答案】（Ⅰ）3n n a =; （Ⅱ）13n n T n +=⋅. 【解析】试题解析：（Ⅰ）设正项等比数列{}n a 的公比为q （0q >），由24159a a a =239a =，故224239a q a ==，解得3q =±，因为0q >，所以3q =．又因为1a ， 22a ， 36a +成等差数列，所以()132640a a a ++-=，解得13a =，所以数列{}n a 的通项公式为3n n a = . （Ⅱ）依题意得()213n n b n =+⋅，则 ()123335373213n n T n =⋅+⋅+⋅+⋯++⋅，①()()23413335373213213n n n T n n +=⋅+⋅+⋅+⋯+-⋅++⋅，②由②-①得()()1232221323333n n n T n +=+⋅-⋅++⋯+-()2112133213232313n n n n n +++-=+⋅-⋅-=⋅-，所以数列{}n b 的前n 项和13n n T n +=⋅．19．十九大指出中国的电动汽车革命早已展开，通过以新能源汽车替代汽/柴油车，中国正在大力实施一项将重塑全球汽车行业的计划.年某企业计划引进新能源汽车生产设备，通过市场分析，全年需投入固定成本万元，每生产（百辆），需另投入成本万元，且.由市场调研知，每辆车售价万元，且全年内生产的车辆当年能全部销售完.（1）求出2018年的利润（万元）关于年产量（百辆）的函数关系式；（利润=销售额-成本）（2）2018年产量为多少百辆时，企业所获利润最大？并求出最大利润. 【答案】（1）；（2）当时，即年生产百辆时，该企业获得利润最大，且最大利润为万元. 【解析】（1）当时，；当时，；∴.（2）当时，，∴当时，；当时，，当且仅当，即时，； ∴当时，即年生产百辆时，该企业获得利润最大，且最大利润为万元.20．已知数列{}n a 的前n 项和为n S ， 13a =，若数列{}1n S +是公比为4的等比数列.（1）求n S ，并求数列{}n a 的通项公式n a ；（2）设•4n n n b n a λ=+， *n N ∈，若数列{}n b 是递增数列，求实数λ的范围. 【答案】（1）13?4n n a -=；（2）289λ>-【解析】（1）{}1n S +是等比数列，首项为114,4a q +==，则14n n S +=，所以41n n S =-；当1n =时， 113a S ==；当2n ≥时， 1134n n n n a S S --=-=⨯，则134n n a -=⨯。

2017-2018学年高二数学下学期期末考试试题理(2)

数学试卷（理数）时间：120分钟总分：150分一、选择题（本大题共12小题，每小题5分，共60分，在每小题给出的四个选项中，只有一项是符合题目要求的）1.已知为实数，，则的值为A.1B.C.D.2.“”是“直线和直线平行”的A.充分而不必要条件B.必要而不充分条件C.充要条件D.既不充分又不必要条件3.下列说法正确的是A.一个命题的逆命题为真，则它的逆否命题一定为真B.“”与“”不等价C.“若，则全为”的逆否命题是“若全不为0，则”D.一个命题的否命题为假，则它的逆命题一定为假4.若，，，，则与的大小关系为A. B. C. D.5.已知命题及其证明：(1)当时，左边，右边，所以等式成立；(2)假设时等式成立，即成立，则当时，，所以时等式也成立．由(1)(2)知，对任意的正整数等式都成立．经判断以上评述A.命题，推理都正确B.命题正确，推理不正确C.命题不正确，推理正确D.命题，推理都不正确6.椭圆的一个焦点是，那么等于A.B.C.D.7.设函数（其中为自然对数的底数），则的值为A. B. C. D.8.直线（为参数）被曲线截得的弦长是A. B. C. D.9.已知函数在上为减函数，则的取值范围是A. B. C. D.10.一机器狗每秒前进或后退一步，程序设计师让机器狗以前进步，然后再后退步的规律移动，如果将此机器狗放在数轴的原点，面向数轴的正方向，以步的距离为个单位长，令表示第秒时机器狗所在位置的坐标．且，那么下列结论中错误的是A. B.C. D.11.已知A、B、C、D四点分别是圆与坐标轴的四个交点,其相对位置如图所示.现将沿轴折起至的位置,使二面角为直二面角,则与所成角的余弦值为A.B.C.D.12.点在双曲线上，、是这条双曲线的两个焦点，，且的三条边长成等差数列，则此双曲线中等于A.3B.4C.5D.6二、填空题（每小5分，满分20分）13.若，则__________.14.在三角形ABC中，若三个顶点坐标分别为，则AB边上的中线CD的长是__________．15.已知F1、F2分别是椭圆的左右焦点，A为椭圆上一点，M为AF1中点，N为AF2中点，O为坐标原点，则的最大值为__________．16.已知函数，过点作函数图象的切线，则切线的方程为。

高二英语暑假假期作业

于都五中2022-2023学年高二艺体英语选择性必修第一册Unit 1 People of Achievement基础自测Ⅰ.重点单词1．adj.至关重要的；关键性的2．adj.必不可少的；极其重要的；充满生机的3．n．目标；目的adj.客观的4．n．性质；特征；财产5．n．提取物；摘录v t.提取；提炼；摘录；(用力)拔出6．v t.& v i.(使)沸腾；煮开；烧开n．沸腾；沸点7．v t.(尤指经努力)获得；赢得v i.(规章、习俗等)存在；流行8．n．失败；挫败v t.击败；战胜9．n．物质；物品；事实根据10．v i.& v t.坚持；坚决要求11．v i.& v t.( ，)迅速离开；逃跑12．n．条件；环境；状况13．n．流；流动；流畅；供应v i.流；流动14．n．图表v t.记录；制订计划15．n．生理学；生理机能→adj.生理学的→ad v.生理学家16．adj.尽心尽力的；坚定的；坚信的→v t.承诺；保证v i.忠于；全心全意投入→n．承诺；投入17．n．(艺术、文学、科学等的)研究院；学会；专科院校→academic adj.学业的；学术的18．adj.植物学的→n．植物学→n．植物学家19．v t.评价；评估→n．评价；评估20．adj.清晰的；清楚的；有区别的→n．区别①21．v t.承认(属实、权威等)；(公开)感谢→adj.公认的→n．承认；感谢②22．v t.分析→a n．分析23．ad v.显而易见；看来；显然→adj.显而易见的；显然的24．adj.科学(上)的；关于科学的→n．科学→n．科学家25．ad v.主要地；一般地→adj.大多数的26．n n．结论；推论→v．推断；结束27．t n．小说家→n．(长篇)小说Ⅱ.核心短语1．承诺；保证(做某事、遵守协议或安排等)2．坚决要求3．(正常使用造成的)磨损；损耗4．导致5．毕业于……6．起初7．偶然；意外地8．确保9．除……以外10．不同于……11．得出结论12．改变某人的主意13．关心Ⅲ.经典句式1．过去分词(短语)作定语In 1967，the Chinese government formed a team of scientists with the objective of discovering a new treatment for malaria，and Tu Youyou was among the first researchers chosen.翻译：2．get done结构Their project got stuck.翻译：3．现在分词短语作定语She analyzed the medical texts again，and by chance，she found one sentence suggesting a different way to treat the wormwood.翻译：4．现在分词短语作方式状语Using a lower temperature to draw out the extract，she found a substance that worked.翻译：5．upon/on doing that...一……就……Upon/On hearing that she had been awarded the Nobel Prize，she said...翻译：Not for jazzWe have an old musical instrument. It is called a clavichord. It was made in Germany in 1681. Our clavichord is kept in the living room. It has belonged to our family for a long time. The instrument was bought by my grandfather many years ago. Recently it was damaged by a visitor. She tried to play jazz on it! She struck the keys too hard and two of the strings were broken. My father was shocked. Now we are not allowed to touch it. It is being repaired by a friend of my father's.1.翻译全文。

学校17—18学年下学期高二第二阶段考试物理试题(附答案)

2017—2018学年度下学期第二次阶段考试高二物理试卷答题时间：90分钟命题校对：高二物理备课组一、选择题：（每小题4分，1-7题为单选题，8-12为多选题）1、酷热的夏天，在平坦的柏油公路上，你会看到在一定距离之外，地面显得格外明亮，仿佛是一片水面，似乎还能看到远处车、人的倒影，但当你靠近“水面”时，它也随你的靠近而后退，对此现象正确的解释是()A．同海市蜃楼具有相同的原理，是由于光的全反射造成的B．“水面”不存在，是由于酷热难耐，人产生的幻觉C．太阳辐射到地面，使地表空气温度升高，折射率大，发生全反射D．太阳辐射到地面，使地表空气温度升高，折射率小，发生全反射2、以下电场中能产生电磁波的是()A．E＝10 N/C B．E＝5sin(4t＋1) N/C C．E＝(3t＋2) N/C D．E＝(4t2－2t) N/C3、若一列火车以接近光速的速度在高速行驶，车上的人用望远镜来观察地面上的一只排球，如果观察的很清晰，则观察结果是()A．像一只乒乓球(球体变小) B．像一只篮球(球体变大)C．像一只橄榄球(竖直放置) D．像一只橄榄球(水平放置)4、1995年科学家“制成”了反氢原子,它是由一个反质子和一个围绕它运动的正电子组成的,反质子和质子有相同的质量,带有等量异种电荷。

反氢原子和氢原子有相同的能级分布,氢原子能级如图所示,则下列说法中正确的是()A.反氢原子光谱与氢原子光谱不相同B.基态反氢原子的电离能为13.6 eVC.基态反氢原子能吸收11 eV的光子而发生跃迁D.大量处于n=4能级的反氢原子向低能级跃迁时,从n=2能级跃迁到基态辐射的光子的波长最短5、如图所示，光滑斜面AE被分成四个相等的部分，一物体由A点从静止释放，下列结论不正确的是（）A．物体到达各点的速率之比v B：v C：v D：v E=12B．物体到达各点经历的时间t E=2tCt DABCDEC ．物体从A 到E 的平均速度v=v BD ．物体通过每一部分时，其速度增量v B -v A =v C -v B =v D -v C =vE -v D6、2008年北京奥运会上何雯娜夺得中国首枚奥运会女子蹦床金牌。

高二语文的暑假作业试题及答案

高二语文的暑假作业试题及答案高二语文的暑假作业试题及答案1.下列图表是对汉字书写现状的调查。

请仔细阅读，完成后面的题目。

(1)从图中汉字书写的现状可以得出怎样的结论?(要求：不出现数字，字数10～20字)结论：___________________________________________________________ _。

(2)针对这一现状，请从社会和学校角度指出其产生的原因。

(要求：字数分别在10～20字)社会：___________________________________________________________ ______。

学校：___________________________________________________________ ______。

答案(1)写字机会少，提笔忘字多，书写能力堪忧。

(2)社会：平时手写汉字的机会少是造成这一现象的社会原因。

学校：语文课不重视汉字的书写，忽视纠正错别字是造成这一现象的学校原因。

2.请根据下面四个省份经济发展的数据统计表，在语段的横线处填上合适的内容，使语意完整，语句连贯。

省份项目广东省江苏省河北省福建省国民生产总值(亿元)30073.7125560.113803.58075.10增幅(%)14.514.815.015.1工业增加总值(亿元)13079.2212473.554652.63980.73增幅(%)18.318.918.919.3固定资产投资总值(亿元)9959.019163.035682.93863.01增幅(%)18.022.528.239.7广东省的经济发展与兄弟省份相比，各项经济指标在总值上均处领先地位，但(1)________________，所以，有人认为广东省应适当(2)________________，(3)______________，促进国民生产总值的增长。

答案(1)在增幅上落后于各兄弟省份(2)加大固定资产投资(3)加快工业的发展3.结合下列表格以及附注的内容，对广东省的PM2.5的基本情况作一个综述。

吉林省实验中学20172018学年高二下学期期末考试物理试题及Word版含答案

吉林省实验中学高二下学期期末考试物理试卷（满分100分，考试时间90分钟）命题人：刘宗海审题人：郝宪武第Ⅰ卷（选择题共52分）一、单项选择题（本大题共12小题，每小题3分，共36分。

在每小题给出的四个选项中只有一项符合题目要求。

）1.下列各组物理量中全部是矢量的是( ) A.位移、速度、加速度、力 B.位移、时间、速度、路程 C.力、位移、速率、加速度 D.速度、加速度、力、路程2.一物体做匀变速直线运动，经过时间t ，它的速度由v 1变为v 2，通过的位移为x ，下列说法中错误的是( )A.这段时间内它的平均速度v ＝x tB.这段时间内它的平均速度v ＝v 1＋v 22C.通过x 2时，它的瞬时速度为xtD.通过x2时，它的瞬时速度为v 21＋v 2223.如图，一质点从A 点开始做初速度为零的匀加速直线运动，加速度大小为a ，B 、C 、D 是质点运动路径上三点，且BC ＝x 1，CD ＝x 2，质点通过B 、C 间所用时间与经过C 、D 间所用时间相等，则质点经过C 点的速度为( )A.x 1＋x 22a x 2－x 1 B.x 1＋x 24a x 2－x 1 C.x 2－x 12ax 2＋x 1D.x 2－x 14ax 2＋x 14.甲、乙两车在同一条直道上行驶，它们运动的位移x 随时间t 变化的关系图象如图所示.已知乙车做匀变速直线运动，其图线与t 轴相切于10s 处.则下列说法正确的是( ) A.甲车的初速度为零 B.乙车的初位置在x 0＝60m 处C.乙车的加速度大小为1.6m/s 2D.5s 时两车相遇，此时甲车速度较大5.一物体由静止开始沿直线运动，其加速度随时间变化的规律如图所示.取物体开始运动的方向为正方向，则下列关于物体运动的v －t 图象正确的是( )6.在平直公路上有甲、乙两辆汽车从同一位置沿着同一方向运动，它们的速度－时间图象如图所示，则( )A.甲、乙两车同时从静止开始出发B.在t ＝2s 时乙车追上甲车C.在t ＝4s 时乙车追上甲车D.甲、乙两车在公路上可能相遇两次7. 光电效应实验装置示意图如图所示.用频率为ν的普通光源照射阴极K ，没有发生光电效应.换用同样频率为ν的强激光照射阴极K ，则发生了光电效应；此时，若加上反向电压U ，即将阴极K 接电源正极，阳极A 接电源负极，在K 、A 之间就形成了使光电子减速的电场.逐渐增大U ，光电流会逐渐减小；当光电流恰好减小到零时，所加反向电压U 可能是下列的(其中W 为逸出功，h 为普朗克常量，e 为电子电荷量)( )A.U ＝hνe －W e B.U ＝2hνe －W e C.U ＝2hν－W D.U ＝5hν2e －W e8.减速带是交叉路口常见的一种交通设施，车辆驶过减速带时要减速，以保障行人的安全.当汽车前轮刚爬上减速带时，减速带对车轮的弹力为F ，下图中弹力F 画法正确且分解合理的是( )9.如图所示，一个“Y”形弹弓顶部跨度为L，两根相同的橡皮条自由长度均为L，在两橡皮条的末端用一块软羊皮(长度不计)做成裹片.若橡皮条的弹力与形变量的关系满足胡克定律，每根橡皮条的劲度系数均为k，发射弹丸时每根橡皮条的最大长度为2L(弹性限度内)，则发射中橡皮条对裹片的最大作用力为( )A.kLB.2kLC.32kLD.152kL10.如图所示是轿车常用的千斤顶，当摇动把手时，螺纹轴就能迫使千斤顶的两臂靠拢，从而将汽车顶起.当车轮刚被顶起时，汽车对千斤顶的压力为 1.0×105N，此时千斤顶两臂间的夹角为120°.下列判断正确的是( )A.此时千斤顶每臂受到的压力大小均为5.0×104NB.此时千斤顶对汽车的支持力为1.0×104NC.若继续摇动把手，将汽车顶起，千斤顶每臂受到的压力将增大D.若继续摇动把手，将汽车顶起，千斤顶每臂受到的压力将减小11.如图所示，A、B、C三物块叠放并处于静止状态，墙面竖直，水平地面光滑，其他接触面粗糙，以下受力分析正确的是( )A.A与墙面间存在压力B.A与墙面间存在静摩擦力C.A物块共受3个力作用D.B物块共受5个力作用12.如图所示为开口向下的“”形框架，两侧竖直杆光滑固定，上面水平横杆中点固定一光滑轻质定滑轮，两侧杆上套着的两滑块用轻绳绕过定滑轮相连，并处于静止状态，此时连接滑块A的绳与水平方向的夹角为θ，连接滑块B的绳与水平方向的夹角为2θ，则A、B两滑块的质量之比为( )A.2sinθ∶1B.2cosθ∶1C.1∶2cosθD.1∶2sinθ二、多项选择题（本大题共4小题，每小题4分，共16分。

17—18学年下学期高二期中考试物理试题(附答案)(12)

2017-2018学年度第二学期期中教学质量监测高二物理试题一、单项选择题：本题共12小题，每小题3分，共36分．每小题只有一个．．．．选项符合题意．1.下列关于温度及内能的说法中正确的是()A．温度是分子平均动能的标志，所以两个动能不同的分子相比，动能大的温度高B．两个不同的物体，只要温度和体积相同，内能就相同C．质量和温度相同的冰和水，内能是相同的D．一定质量的某种物质，即使温度不变，内能也可能发生变化2.下列说法正确的是()A．布朗运动的无规则性反映了液体分子运动的无规则性B．悬浮在液体中的固体小颗粒越大，则其所做的布朗运动就越剧烈C．物体的温度为0 ℃时，物体的分子平均动能为零D．布朗运动的剧烈程度与温度有关，所以布朗运动也叫热运动3.一定质量的理想气体经历一系列变化过程，如图所示，下列说法正确的是()A．b→c过程中，气体压强不变，体积增大B．a→b过程中，气体体积减小，压强减小C．c→a过程中，气体压强增大，体积不变D．c→a过程中，气体内能增大，体积变小4.图为一定质量理想气体的压强p与体积V的关系图象，它由状态A经等容过程到状态B，再经等压过程到状态C.设A、B、C状态对应的温度分别为T A、T B、T C，则下列关系式中正确的是()A．T A<T B，T B<T C B．T A>T B，T B＝T CC．T A>T B，T B<T C D．T A＝T B，T B>T C5.关于热力学定律，下列说法正确的是()．A．在一定条件下物体的温度可以降到0 KB．物体从单一热源吸收的热量可全部用于做功C．吸收了热量的物体，其内能一定增加D．压缩气体气体的温度一定升高6.如图所示，一定量的理想气体从状态a沿直线变化到状态b，在此过程中，其压强() A．逐渐增大B．逐渐减小C．始终不变D．先增大后减小7.下列现象或事例不可能．．．存在的是()．A．80 ℃的水正在沸腾B．水的温度达到100 ℃而不沸腾C．沥青加热到一定温度时才能熔化D．温度升到0 ℃的冰并不融化8.做布朗运动实验，得到某个观测记录如图，图中记录的是()A．分子无规则运动的情况B．某个微粒做布朗运动的轨迹C．某个微粒做布朗运动的速度－时间图线D．按等时间间隔依次记录的某个运动微粒位置的连线9.某驾驶员发现中午时车胎内的气压高于清晨时的，且车胎体积增大．若这段时间胎内气体质量不变且可视为理想气体，那么()A．外界对胎内气体做功，气体内能减小B．外界对胎内气体做功，气体内能增大C．胎内气体对外界做功，内能减小D．胎内气体对外界做功，内能增大10.两个相距较远的分子仅在分子力作用下由静止开始运动，直至不再靠近．在此过程中，下列说法不正确．．．的是()A．分子力先增大，后一直减小B．分子力先做正功，后做负功C．分子动能先增大，后减小D．分子势能和动能之和不变11.如图所示的绝热容器，隔板右侧为真空，现把隔板抽掉，让左侧理想气体自由膨胀到右侧至平衡，则下列说法正确的是()A．气体对外做功，内能减少，温度降低B．气体对外做功，内能不变，温度不变C．气体不做功，内能不变，温度不变，压强减小D．气体不做功，内能减少，压强减小12.在装有食品的包装袋中充入氮气，然后密封进行加压测试，测试时，对包装袋缓慢施加压力，将袋内的氮气视为理想气体，在加压测试过程中，下列说法中不正确．．．的是() A．包装袋内氮气的压强增大B．包装袋内氮气的内能不变C．包装袋内氮气对外做功D．包装袋内氮气放出热量二、多项选择题：本题共8小题，每小题4分，共32分．每小题有多个选项符合题意．全部选对的得4分，选对但不全的得2分。

高二数学寒假作业

高二数学寒假作业篇一：高二数学假期作业(2)高二数学假期作业（2）第Ⅰ卷（选择题，共60分）一、选择题：本大题共12分，每小题5分，共60分．1．若函数f(某)在某＝1处的导数为3，则f(某)的解析式可以为A．f(某)＝(某－1)2＋3(某－1)B．f(某)＝2(某－1)C．f(某)＝2(某－1)2D．f(某)＝某－12．(某)10的展开式中某6y4项的系数是A．840B．－840C．210D．－2103．一个学生能够通过某种英语听力测试的概率是得通过的概率是A．，他连续测试2次，那么其中恰有一次获2D．14B．13C．12344．已知曲线y＝co某，其中某∈[0，A．1B．23π]，则该曲线与坐标轴围成的面积等于25C．D．325．一位母亲纪录了儿子39岁的身高的数据（略），她根据这些数据建立的身高y（cm）与年龄某的回归模型为y＝7.19某＋73.93，用这个模型预测这个孩子10岁时的身高，则正确的叙述是A．身高一定是145.83cmC．身高在145.83cm以上6．若复数B．身高在145.83cm左右D．身高在145.83cm以下a3i（a∈R，i为虚数单位）是纯虚数，则实数a的值为12iA．－2B．4C．－6D．67．若z∈C且|z＋2－2i|＝1，则|z－2－2i|的最小值等于A．2B．3C．4D．58．通过随机询问250名不同性别的大学生在购买食物时是否看营养说明书，得到如下2某2联A．95%以上认为无关B．90%95%认为有关C．95%99.9%认为有关D．99.9%以上认为有关9．从4位男教师和3位女教师中选出3位教师，派往郊区3所学校支教，每校1人，要求这3位教师中男、女教师都要有，则不同的选派方案有A．210种B．186种C．180种D．90种10．若A，B，C，D，E，F六个不同元素排成一列，要求A不排在两端，且B、C相邻，则不同的排法共有A．72种B．96种C．120种D．144种11．(某2＋2某＋1)d某＝()．A．4B．13C．12D．3412．从一副不含大小王的52张扑克牌中不放回地抽取2次，每次抽1张，已知第1次抽到A，那么第2次也抽到A的概率为()．A．B．13C．12D．117第Ⅱ卷（非选择题，共74分）二、填空题：本大题共4小题，每小题4分，共16分，把答案填在答题卡指定位置上．13．在数列{an}中，a1＝3，且an1＝a2，则数列{an}的通项公式an＝_____．n（n为正整数）14．若(2某－1)7＝a7某7＋a6某6＋…＋a1某＋a0，则a7＋a5＋a3＋a1＝_____________．15．某信号兵用红、黄、蓝3面旗从上到下挂在竖直的旗杆上表示信号，每次可以任挂1面、2面或3面，并且不同的顺序表示不同的信号，一共可以表示___________种不同的信号．16．函数y＝in3某＋co3某在[－，]上的最大值是________________．44三、解答题：本大题共6小题，共74分，解答应写出文字说明、证明过程或演算步骤．17．（本小题满分12分）n2(n1)2用数学归纳法证明：当n为正整数时，1＋2＋3＋……＋n＝．433318．（本小题满分12分）某年级的联欢会上设计了一个摸奖游戏，在一个不透明的口袋中装有10个红球和20个白球，这些球除颜色外完全相同，一次从中摸出5个球，至少摸到3个红球就中奖，求中奖概率．根据工资待遇的差异情况，你愿意选择哪家单位？请说明你的理由．20．（本小题满分12分）先阅读下面的文字，再按要求解答．如图，在一个田字形地块的A、B、C、D四个区域中栽种观赏植物，要求同一区域种同一种植物，相邻两区域（A与D，B与C不相邻）种不同的植物，现有四种不同的植物可供选择，问不同的种植方案有多少种？AB某学生给出如下的解答：CD解：完成四个区域种植植物这件事，可分4步，第一步：在区域A种植物，有C14种方法；第二步：在区域B种植与区域A不同的植物，有C13种方法第三步：在区域D种植与区域B不同的植物，有C13种方法第四步：在区域C种植与区域A、D均不同的植物，有C12种方法根据分步计数原理，共有C14C3C3C2＝72（种）答：共有72种不同的种植方案．问题：（Ⅰ）请你判断上述的解答是否正确，并说明理由；（Ⅱ）请写出你解答本题的过程．为了研究不同的给药方式（口服与注射）和药的效果（有效与无效）是否有关，进行了相22．（本小题满分14分）已知函数f(某)＝(某2－2某)ek某（k∈R，e为自然对数的底数）在(和∞)上递增，在[上递减．（Ⅰ）求实数k的值；（Ⅱ）求函数f(某)在区间[0，m]上的最大值和最小值．根据193个病人的数据，能否作出药的效果与给药方式有关的结论？请说明理由．高二数学假期作业（2）参考答案二、填空题：每小题4分，共16分．13．3214．109415．1516．1三、解答题：共74分．n1122217．证明：（1）当n＝1时，左边＝1，右边＝＝1，4∴等式成立．································································································2分（2）假设当n＝k时，等式成立，即k2(k1)21＋2＋3＋……＋k ＝．··································································4分43333那么，当n＝k＋1时，有k2(k1)21＋2＋3＋……＋k＋(k＋1)＝＋(k＋1)3．········································6分422(k1)2(k2)22k2k4k4＝(k＋1)(＋k＋1)＝(k＋1)＝444(k1)[(k1)1]2＝．··················································································9分433333这就是说，当n＝k＋1时，等式也成立．···························································10分根据（1）和（2），可知对n∈N某等式成立．·······················································12分18．解：设摸出红球的个数为某，则某服从超几何分布，其中N＝30，M＝10，n＝5．············································································4分于是中奖的概率为P(某≥3)＝P(某＝3)＋P(某＝4)＋P(某＝5) (6)分353454555C10C30C10C30C10C30101010＝＋＋································································9分555C30C30C30≈0.191．······································································································12分19．解：根据月工资的分布列，可得E某1＝1200某0.4＋1400某0.3＋1600某0.2＋1800某0.1＝1400．··································································································2分22D某1＝(1200－1400)某0.4＋(1400－1400)某0.3＋(1600－1400)2某0.2＋(1800－1400)2某0.1＝40000···································································································4分E某2＝1000某0.4＋1400某0.3＋1800某0.2＋2200某0.1＝1400·····································································································6分D某2＝(1000－1400)2某0.4＋(1400－1400)2某0.3篇二：2022高二数学下册寒假作业答案D.4某-3y+7=08.过点的直线中,被截得最长弦所在的直线方程为()A.B.C.D.9.(2022年四川高考)圆的圆心坐标是10.圆和的公共弦所在直线方程为____.11.(2022年天津高考)已知圆的圆心是直线与轴的交点，且圆与直线相切，则圆的方程为.12(2022山东高考)已知圆过点，且圆心在轴的正半轴上，直线被该圆所截得的弦长为，则圆的标准方程为____________13.求过点P(6，-4)且被圆截得长为的弦所在的直线方程.14、已知圆C的方程为某2+y2=4.(1)直线l过点P(1,2)，且与圆C交于A、B两点，若|AB|=23，求直线l的方程;(2)圆C上一动点M(某0，y0)，ON=(0，y0)，若向量OQ=OM+ON，求动点Q的轨迹方程人的结构就是相互支撑，众人的事业需要每个人的参与。

高二物理暑假练习2(含答案必修二)

物理假期练习题一、单选题1．“天津之眼”是一座跨河建设、桥轮合一的摩天轮，是天津市的地标之一。

摩天轮悬挂透明座舱，乘客随座舱在竖直面内做匀速圆周运动。

下列叙述正确的是A．摩天轮转动过程中，乘客的机械能保持不变B．在最高点，乘客重力大于座椅对他的支持力C．摩天轮转动一周的过程中，乘客重力的冲量为零D．摩天轮转动过程中，乘客重力的瞬时功率保持不变【答案】B2．如图所示，小球甲从A点水平抛出的同时小球乙从B点自由释放，两小球先后经过C点时速度大小相等，方向间夹角为θ=45°，已知BC高h，不计空气的阻力。

由以上条件可知A．甲小球做平抛运动的初速度大小为B．甲、乙两小球到达C点所用时间之比为1:2C．A、B两点的高度差为D．A、B两点的水平距离为【答案】A3．物体在恒定合外力F作用下由静止开始运动，经时间t，发生的位移为x，关于F 在t时刻的功率P,下列说法中正确是A．F的大小一定时，P与t成正比B．F的大小一定时，P与x成正比C．t一定时，P与F的大小成正比D．x一定时，P与F的大小成正比【答案】A4．如图甲所示，为测定物体冲上粗糙斜面能达到的最大位移x与斜面倾角的关系，将某一物体每次以不变的初速率沿足面向上推出，调节斜面与水平方向的夹角，实验测得x与斜面倾角的关系如图乙所示，g取10 m／s2，根据图象可求出( )A．物体的初速率B．物体与斜面间的动摩擦因数C．取不同的倾角，物体在斜面上能达到的位移x的最小值D．当某次时，物体达到最大位移后将沿斜面下滑【答案】C5．水平路面上有一质量为1 kg的玩具小车由静止开始沿直线启动。

其运动的v-t图像如图所示，图中0~2 s时间段图像为直线，2 s后发动机的输出功率保持不变。

已知玩具小车行驶中的阻力恒为2 N，则下列说法正确的是A．2 s后牵引力功率为12 WB．玩具小车运动的最大速度v m为12 m/sC．0~2s内牵引力所做的功为18 JD．2~4s内牵引力所做的功为60 J【答案】D6．人造地球卫星绕地球做匀速圆周运动，假如卫星的加速度减小为原来的14，卫星仍做匀速圆周运动，则AB．卫星的角速度减小为原来的1 2C．卫星的周期增大为原来的2倍D．卫星受到的引力减小为原来的1 2【答案】A二、多选题7．一个物体在某高度由静止开始竖直下落，在运动过程中所受的阻力恒定。

2017_2018学年高中物理暑假作业弹性碰撞和非弹性碰撞新人教版选修3_5

弹性碰撞和非弹性碰撞一、单选题1.如下图所示,质量为M 的盒子放在光滑的水平面上,盒子内表面不光滑,盒内放有一块质量为m 的物体.从某一时刻起给m 一个水平向右的初速度v 0,那么在物块与盒子前后壁多次往复碰撞后( )A.两者的速度均为零B.两者的速度总不会相等C.车的最终速度为0mv M ,向右 D.车的最终速度为0mv m M+,向右2.质量为1am kg =、2b m kg =的小球在光滑的水平面上发生碰撞,碰撞前后两球的位移—时间图象如图所示,则可知碰撞属于( )A.弹性碰撞B.非弹性碰撞C.完全非弹性碰撞D.条件不足,不能确定 3.如图所示,滑块A 、B 、C 质量均为m .开始时A 、B 分别以1v ,2v 的速度沿光滑水平轨道向固定在右侧的挡板运动,现将C 无初速度地放在A 上,并与A 粘合不再分开,此时A 与B 相距较近, B 与挡板碰撞将以原速率反弹, A 与B 碰撞后将粘合在一起。

为使B 能与挡板碰撞两次,则1v ,2v 应满足( )A. 122?v v ≥B. 12 v v <C. 2122?v v v <≤ D. 2122v v v ≤<4.一列火车共有n 节车厢,各节车厢质量相等,相邻车厢间留有空隙,首端第一节车厢以速度v 向第二节撞去,并连接在一起,然后再向第三节撞去,并又连接在一起,这样依次撞下去,使n 节车厢全部运动起来,那么最后火车的速度是(铁轨对车厢的摩擦不计)( ) A.v B.nv C.vnD.2n v 5.如图所示,质量为2?P m kg =的小球P 从离水平面高度为0.8h m =的光滑固定斜面上滚下,与静止在光滑水平面上质量为2Q m kg =的带有轻弹簧的滑块Q 碰撞,210/g m s =,下列说法正确的是( )A.P 球与滑块碰撞前的速度为5/m sB.P 球与滑块碰撞前的动量为16/kg m s ⋅C.碰撞后轻弹簧压缩至最短时P 和Q 的速度为2/m sD.当轻弹簧压缩至最短时其弹性势能为16J6.如图所示,滑块质量A 、C 均为m,滑块质量B 为3m/2。

高二英语暑假作业题及答案

高二英语暑假作业题第二部分阅读理解(共两节，满分40分)第一节 (共15小题;每小题2分，满分30分)AWhether you’re making a one-off trip to London or you’re a regular visitor, using an Oyster travel smartcard is the easiest way to travel around the city’s public transport network.Advantages of a Visitor Oyster CardA Visitor Oyster Card is one of the best ways to pay for single journeys on the bus, tube, DLR, tram, London Over-ground and most National Rail services in London:● Save time -- your card is ready to use as soon as you arrive in London.● It’s more than 50% cheaper than buying a paper travel card or single tickets with cash.● There is a daily price cap -- once you have reached this limit, you won’t pay any more.● Enjoy special offers and promotions at leading Lond on restaurants, shops and entertainment venues -- plus discounts on the Emirates Air Line cable car and Thames Clippers river buses.Buy a Visitor Oyster CardBuy a Visitor Oyster card before you visit London and get it delivered to your home address. A card costs ￡3 (non-refundable) plus postage. Order online and arrive with your Oyster in hand! You can also buy a Visitor Oyster card from Gatwick Express ticket offices at Gatwick Airport Station and on board Eurostar trains travelling to London.To p Up(充值)Your Visitor Oyster CardYou can choose how much credit to add to your card. If you are visiting London for two days, you can start with￡20 credit. If you run out of credit, add credit at the following locations:● Touch screen ticket machines i n tube, DLR, London Over-ground and some National Rail stations.● Around 4,000 Oyster Ticket Stops found in newsagents and small shops across London.● TFL Visitor and Travel Information Centers.● Tube and London Over-ground station ticket offices.● Emirates Air Line terminals.1. What benefit will you get from a Visitor Oyster Card when travelling in London?]A. It increases your working efficiency.B. It allows you to have meals free of charge.C. It saves you money on transportation.D. It provides a 50% discount at a London shop.2. How many ways are mentioned to buy a Visitor Oyste r Card in the passage?A. 2.B. 3.C. 4.D. 5.3. Where can you top up your Visitor Oyster card?A. At Gatwick Express ticket offices.B. At a tube stationticket office.C. On the Internet.D. On Eurostar trains.BPeople are always looking for lost cities and occasionally oneis found: Borobudur in Indonesia, for example. But perhaps some of the places people look for never existed— or did they? Here are just a few famous mythical(传说中的)cities.El Dorado.El Dorado is a story that began in 1537, when Spanish explorers found the Muisca people in the mountains of what is now Colombia. They heard the story of a man who covered himself with gold and dived into a lake. Then people began to talk of El Dorado –‘the golden man’Soon people started to think of El Dorado a s a place, too一 a city of gold and amazing riches. Nowadays, the name ’El Dorado’ is still used to mean‘a place where you can get rich quickly.’AtlantisThere was once an island in the middle of the Atlantic Ocean. It was the mythical island of Atlantis. The people of the island were very rich, thanks to the natural resources(资源)on their island. For hundreds of years, they lived simple lives. But slowly they began to change. They started to want power. So the gods decided to destroy Atlantis. Suddenly, the island and its people were swallowed(淹没)by the sea and were never seen again.ShambhalaIn Tibetan Buddhist tradition, Shambhala is a mystical (神秘的)country that is hidden somewhere behind the Himalayas. Shambhala is a word from an old language that means‘place of peace’or‘place of happiness’. It is said th at there is no war in Shambhala, and in the future , when the world is full of war, a huge army will come out of Shambhala, destroy the world’s bad rulers, and start a new Golden Age. Some people say this will hap pen in 2424.4. Nowadays,‘El Dorado’means‘______’A. Colombia.B. the golden man.C. a place of great wealth.D. the city with mountains.[来源:学*科*网]5. Atlantis was destroyed by_____A. the gods.B. its people.C. its powerful enemies.D. its neighboring country.6. What will probably happen in 2424 according to the last paragraph?A. The Himalayas will disappear.B. The world will be full of peace.C. Shambhala will save the world.D. There will be a war in Shambhala.7. What would be the best title for the text?A. Rich lands .B. Mythical citiesC. Famous tourist attractions.D. Newly-found ancient countries.CPsychologists have discovered that even the most independent-minded of us will conform tosocial pressure when we are with a group of people. In oneclassie experiment, people were showna vertical line and asked to find a line of identical lengthfrom a selection of three.You might think that this is an absurdly easy task, and when people perform it by themselvesthey do it very well. However, psychologists have discoveredthat we are very easily swayed by the opinions of other people when wedo this task in a group. In one study, a group of three peoplewas set up,where two of the people were confederates(同伙)of the experimenter.When the confederates deliberately gave wronganswers,people were often swayed to give the wrong answer also. In fact, 75% of people gave at least one wrong answer, with some people conforming to peer pressure on every occasion.But why do people conform in this way? In an easy task like this, it seems that people donot want to step out of line with the prevailing opinion of the group. On more difficult tasks, people also conform because they lose 〔onfidence in their own ability to make decisions and preferto trust the majority opinion instead.A typical example of this kind of conformity arises when we come across people in distress.Would you help a woman who has been attacked in the street?It turns out that you are much more likely to go to her assistance if you are alone.When other people are also around,a diffusion ofresponsibility occurs. People are paralysed into inaction, because everyone assumes that someone else will go to the woman' s assistance.8. In Paragraph 1, the underlined word "conform" probablymeans“ ”A. seek independenceB. disobey ordersC. seek pleasureD. follow what others do9.What is the purpose of the experiment described in Paragraph 2? ToA. explain why people would be influenced by the opinions of othersB. prove that people are easily influenced by the opinions of othersC. train the confederates of the experimenter as independent-minded[来源:学+科+网Z+X+X+K]D. describe how people would be influenced by the opinions of others10. In the last paragraph, according to the author,why wouldn’t one help the woman ?He .A. thinks he has no responsibilities to give a handB.thinks he has has nothing to do with itC. is too shy to give his helping hand D .thinks someone elsewill offer assistance1l.What method does the author mainly use to develop the text?A. Giving examples.B. Cause-effect analysis.C. Comparative analysis.D. Process analysis.DA group of kids at McIntyre Elementary School, in Pittsburgh, Pennsylvania, have created a special bench to make sure their fellow classmates aren’t left out on the playground. Called the “Bud dy Bench”, students can use the seat as a safe and supportive place to let others know they’d like to be included in playtime, but may be too shy to ask.The concept of the Buddy Bench is simple: Students who want t o partake in playground games and activities, but may feel hesitant, can take a seat, which signifies(表明) to other children on the playground that they may need something extra to encourage them to participate.The idea for the bench came about last year, when Farrell,school counselor at McIntyre Elementary, was conducting a leadership group to help students overcome shyness and gain confidence. Fourfourth-grade students came up with the idea for the Buddy Bench in this workshop, and worked with Farrell to draft a letter to present to the Parent Teacher Staff Organization to make the bench a reality. The PTSO approved the students’ proposal, and installed(安装) a bright metal bench with a cheerful sign that reads “Buddy Bench” on the school’s playground.Since it wa s installed on Nov. 16, the bench has been effective. The simple concept has resonated with(引起共鸣) the students, andalready has created a better environment within the school community.“Each day, I go to see the buddy bench working,” Farrell said. “The lessons they are learning now will benefit them their entire lives. It is simply a beautiful example of kids wanting to be kind and continue to be kind every day.”12. Who is Buddy Bench created for?A. Students who love games and activities.B. Students who want and continue to be kind.C. Students who are in Farrell’s leadership group.D. Students who are left out on the playground.13. Who thought of the idea for the Buddy Bench?A. Farrell.B. The PTSO.C. Four students.D. Some parents.14. What does the underl ined word “they” in the last paragraph refer to?A. The PTSO.B. The workshop members.C. Buddy Bench users.D. Farrell and teachers.15. Which of the following statements can show “the bench has been effective”?A. More and more creative ideas have come up.B. The workshop kids have set a good example.C. The PTSO has decided to provide more buddy benches.D. Some shy students have found friends on the playground.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。

2017-2018学年度人教版化学选修3高二暑假作业：共价键的主要类型及其运用(含答案)

2017-2018学年度人教版化学选修3高二暑假作业共价键的主要类型及其运用一、单选题1.下列说法正确的是( )A.干冰升华会破坏共价键B.H2O分子很稳定是由于H2O分子之间能形成氢键C.N2H4分子中既含极性键又含非极性键D.由于非金属性Cl>Br>I,所以酸性HCl>HBr>HI2.下列说法正确的是( )A.含有非极性键的分子一定是非极性分子B.非极性分子中一定含有非极性键C.由极性键形成的双原子分子一定是极性分子D.键的极性与分子的极性无关3.共价键具有饱和性和方向性,下列关于共价键这两个特征的叙述中,不正确的是( )A.共价键的饱和性是由成键原子的未成对电子数决定的B.共价键的方向性是由成键原子的轨道的方向性决定的C.共价键的饱和性决定了分子内部的原子的数量关系D.共价键的饱和性与原子轨道的重叠程度有关4.下列物质中σ键和π键数目比为1:2的是( )A.O2B.HCNC.CO2D.N25.下列化合物只含有极性键的是( )A.H 2B.KOHC.H 2OD.Na 2SO 46.下列化学式及结构式中成键情况不合理的是( ) A. 3CH N :B. 2CH SeO :C. 4CH S :D. 4CH Si :7.下列说法正确的是( )A.若把2H O 分子写成3H O 分子,违背了共价键的饱和性B.氯化氢溶于水能电离出H +、Cl -,所以氯化氢是离子化合物C.所有共价键都有方向性D.两个原子轨道发生重叠后,两核间的电子仅存在于两核之间 8.下列关于σ键和π键的理解不正确的是( ) A. σ键能单独形成,而π键一定不能单独形成 B. σ键可以绕键轴旋转, π键一定不能绕键轴旋转C.双键中一定有一个σ键,一个π键,叁键中一定有一个σ键,两个π键D.气体单质中一定存在σ键,可能存在π键 9.下列含有极性键的非极性分子是( )①CCl 4 ②NH 3 ③CH 4 ④CO 2 ⑤N 2 ⑥H 2O ⑦HF A.②③④⑤ B.①③④⑤ C.①③④ D.以上均不对10.下列物质分子中既有σ键,又有π键的( ) ①HCl ②H 2O ③N 2 ④H 2O 2 ⑤C 2H 4 ⑥C 2H 2A.①②③B.④⑤⑥C.①③⑥D.③⑤⑥11.如图为元素周期表短周期的一部分,下列有关A、B、C、D四种元素的叙述中不正确的是( )A.A、C两元素形成的化合物都为共价化合物B.AD2的电子式为C.B、C形成的化合物BC中所含化学键为非极性共价键D.B2的结构式为N≡N12.三硫化四磷(P4S3)用于制造火柴即火柴盒摩擦面,分子结构如图所示。

2017-2018学年高二年级数学期末试卷(理数)含答案

2．若 x 2m2 3 是 1 x 4 的必要不充分条件，则实数 m 的取值范围是（）
10．已知函数 f x 1 x3 1 mx2 4x 3 在区间 1,2上是增函数，则实数 m 的取值范围是（
32
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，则满足
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江苏苏州第一中学校20172018度

教学处
下午3:00
2017级家长会
圣陶书院
下午4:00
高一质量分析会
颉刚楼207会议室
教学处
下午4:00
高二部分学生及家长会
图书馆四楼报告厅
教学处
下午4:00
省苏州一中“勿忘初心献礼青春”入团仪式暨社团文化汇演
圣陶大礼堂
团委
下午4:00
各班电教设备安全大检查
各班教室
信息处
高一学生分班志愿表确认签字
教学处
阶梯教室
德育处
下午2:00
行政会
颉刚楼207会议室
校长室
下午
学期校园、宿舍安全大检查
保卫处、总务处
注：（1）2018年6月30日学期结束，7月1日放暑假。
团委办公室
团委
22-23日
高二期末3科统考
教学处
《教育为人生》德育课程方案定稿
德育处
下午3:55
圣陶书院、高一年级期末考试考前指导和考风考纪教育广播会
各班教室
德育处
班会课
期末测试考风考核广播
圣陶书院
23
六
上午8:00
高二数学老师阅卷
逸夫楼机房
教学处
《草桥学生优秀作文选》出版
教科处
23-24日
高二语文老师阅卷
2017-2018第二学期优秀团员、团干部评比
颉刚楼207会议室
团委
下午4:00
高一年级家长、学生会（礼堂现场、教室直播）
礼堂现场、教室直播
教学处
书院期末质量分析、学生奖项评选
桂芬楼207
圣陶书院
校五星文明班、优秀班主任材料审核、评比
德育处
28
四

新高二学生暑假自主学习练习答案

新高二学生暑假自主学习练习答案Keys to 练习一单项选择：1-5 CBACB 6-10 ACBDC 11-15 ADDBA 16-20 CDCBC完形填空：1-5CACDB 6-10AACBD 11-15ACBDA 16-20DBCBB阅读理解：1-4 ADCB 5-8 BDDA任务型阅读：1. being/becoming 2. enjoying 3. protect/keep 4. washing 5. worried6. influence/effect7. too8. value/importance9. Overcoming10. activities词汇检测：1. personally 2. hesitate 3. guidance 4. relief 5. confused/considering同义转换：1. height 2. frozen 3. understand 4. whispered 5. made句子翻译：1. As far as I’m concerned, the best way to achieve high grades is to make good use of your time.2. It is a real struggle for Jerry to have been devoting himself to scientific research for so many years.3. What they gave is more than help; they gave us the confidence to live through hard times.4. As a matter of fact, there’s no point of defending yourself when it is your own fault.5. It was a painful experience, which made me regret not taking mother’s advice but taking weight-loss pills.动词填空：1. suffering 2. informed 3. (should) broadcast 4. changing 5. will have saved6. was caught7. preferred8. limited9. starving 10. was bent短文填空：1. achievement 2. like 3. role 4. who 5. Though/Although 6. what 7. as8. student 9. never 10. realized 11. picture 12. read 13. feeling 14. model15. performance 16. impressed 17. acting 18. scene 19. which 20. mostKeys to 练习二单项选择：1-5 ABCDC 6-10 CCABB 11-15 AADCD 16-20 DADAA完形填空：1-5 CBDAB 6-10 CDDAB 11-15 ABCDC 16-20 CABCD阅读理解：1-4 BADD 5-8 DAAB任务型阅读：1. Purpose/Aim/Goal 2. steps 3. competition 4. replaced 5. managed6.twice/double7. allowing8. look9. similar 10. age/grow词汇检测：1.depends 2. Approximately 3. embarrassed 4. harmony 5. convenient同义转换：1. interrupt 2. existence / being 3. influence/affect 4. regret 5. realized句子翻译：1. The English language was originally formed on the basis of the languages of small tribes inNorthern Europe.2. The success of the programme has contributed greatly to the current interest in pop music.3. I reached a point in my career where I had to decide which way to go at that time.4. Traditional Chinese sports are similar to Western sports in that both are meant to improve people’s health.5. Despite the fact that French did not replace English as the first language, it still had an impact on the English language.动词填空：1. makes sense 2. be related to 3. to have covered 4. added to 5. to be/being stared at6. compared to7. can’t help8. has made great achievements9. afford 10. reached out短文填空：1. weak 2. However 3. tears 4. as 5. dark/darkness6. about7. since8. growing9. control 10. to11. fault 12. felt 13. Where 14. grow 15. Why16. preferred/chose 17. By 18. though/although 19. courage 20. understoodKeys to 练习三单项选择：1-5CCACD 6-10 BDCAC 11-15 BBAAC 16-20 DCADB完形填空：1-5ACBDA 6-10 DBACA 11-15 CDBCD 16-20 ABCDB阅读理解：1 -4 DACA 5-8 CDAB任务阅读：1. Tips 2. place 3. Without/ No 4. Special 5. set6. positive7. Expressed8. children9. Help 10. Celebrate词汇检测：1. burying 2. declared 3. cultural 4. gradually 5.destroyed同义转换：1. interests 2. Similarly 3. existed 4. remained 5. performed/conducted/done翻译句子：1. Confucius greatly influenced / had a great influence upon the development of China’s culture and education.2. The desert was once a green land with huge trees, but they were cut down and that resulted in the city being buried by sand.3. People are wondering who is going to take over the company when the president of the board retires.4. The desert was once a green land with enormous trees, but even that didn’t prevent the cityfrom being buried by sand.5. Not only was Rome a city and a republic, but it was also to become the capital of one of thelargest empires in history.动词填空：1. be informed of 2. depends on 3. are banned 4. looking up 5. differs from6. dreamed/dreamt of7. care about8. taken control of9. was adopted10. taken into consideration短文填空：1. dying/eager 2. tired 3. heavy 4. away 5. when6. held7. another8. felt9. so 10. handed11. forehead 12. what 13. across 14. happier 15. lucky16. as 17. meant 18. offer 19. kindness 20. chanceKeys to 练习四单项选择：1-5 DACDB 6-10 BDCCA 11-15 CACAC 16-20 AACCA完形填空：1-5 BDAAB 6-10 DCAAB 11-15ABDAD 16-20 ACADA阅读理解：1-4 BADA 5-8 BCDD任务型阅读：1. process 2. presentation 3. judge 4. consideration/account 5. compare 6. detail 7. familiar 8. information 9. Dress 10. confident词汇检测：1. available 2. persuasive 3. intended 4. tricked 5. promote同义转换：1. appeals 2. fall 3. differ 4. recommended 5. beneficial翻译句子：1. A commercial advertisement is one that someone has paid for to promote a product or service.2. This disease is quite common to the old but ninety percent of the patients can be cured of the disease.3. His father meant him to be an engineer but he was never meant for an engineer.4. There are lots of different ways to get your message across when you are putting together an ad campaign.5. You may want to ask yourself what parts of this product your target buyers would care about or be concerned with.动词填空：1. get it across 2. deals with 3. fell for 4. is; used to 5. to put; together6. was satisfied with7. trick; into8. was aware of9. appeals to 10. committing suicide短文填空：1. informing 2. retiring 3. old 4. present/gift 5. sign 6. encouragement7. many 8. coincidence 9. teaching 10. matterKeys to 练习五单项选择：1-5 CDBAB 6-10 BBBAC 11-15 CCBDC 16-20 DCBDC完形填空：1-5 BDACD 6-10 AADAB 11-15 BDCCB 16-20 CACAB阅读理解：1-4 DACB 5-8 CBCA任务型阅读：1. While/Though/Although 2. weight 3. forced 4.exercise 5. lose6. tired7. provided8. suffer9. containing 10. reducing/losing词汇检测：1. competing 2. absence 3. Involved 4. ensure 5. balanced同义转换：1. attempted 2. significance/importance 3. briefly 4. likely5. considered/recognized/ regarded句子翻译：1. No matter what difficulties we meet with, we will try our best to overcome them.2. At the conference, a suggestion was put forward that we should make a budget for the project in advance.3. Their dream was that the Olympic Games would make it possible for countries and people to live side by side in peace.4. Compared with the way most urban planning is done today, this kind of urban planning is in the long term cheaper and more practical.5. These are some of the Olympic athletes who have brought joy to people across the world with their attempts to push the boundaries of human achievements.动词填空：1. results in 2. been aware of 3.was invited 4. glanced at5. decorated with6. poured out7. rose up against8.broke down短文填空：1. leave 2. risk 3. especially 4. weather 5. dangerous 6. destroy 7. caused 8. waiting 9. worth 10. everKeys to 练习六单项选择：1-5 BDDAA 6-10 CBBCA 11-15 ACCBC 16-20 CDCAC完形填空：1-5 DBCAD 6-10 CADCA 11-15 BDBCB 16-20 ADAAB阅读理解：1-4 CDCA 5-7 DBA任务型阅读：1. success 2. Reasons 3. affect/influence 4. Suggestions / Tips / Advice 5. Think6. careful7. goals8. health9. important 10. changed词汇检测：1. escapes 2. constantly 3. delivers 4. voice 5. rescue同义转换：1. connection 2. company 3. accused 4.counts/matters 5. inexperienced句子翻译：1. What impresses me most is that whenever he appears in front of me, he wears a charming smile.2. Firefighters could be trained using RealCine without the risk of getting injured in a burning building.3. Upon reaching the top of the mountain, you will experience a feeling of happiness and a senseof achievement.4. More importantly, we should try hard to make people aware of the dangers of drunk driving.5. If you do anything wrong, you should be responsible for/take responsibility for it.动词填空：1. made contributions to 2. make way for 3. took part in 4. broke the record5. came to public attention6. was involved in7. happened to8. playing a; role in 9. come up with 10. keep; under control短文填空：1. unless 2. even 3. normal 4. express 5. health 6. raise 7. likely 8. greater 9. cause 10. WaitKeys to 练习七单项选择：1-5ABCBD 6-10 DBDCB 11-15DDBCB 16-20ACACB完形填空：1-5CABDC 6-10CAADB 11-15DBACD 16-20CABDB阅读理解：1-4 DBBC 5-8 ABDD任务型阅读：1. causes 2. Living 3. disappointed 4. harm 5. Approaches6. exercise7. less8. Managing9. Regular 10. breath词汇检测：1. forbidden 2. similarities 3. approve 4. preparations 5. challenging 同义转换：1. struggle 2. immediately/directly 3. Unlike 4. tolerate 5. Since句子翻译：1.Going to a British high school for a year was a very enjoyable and exciting experience for me.2.It was a struggle for me to remember all the faces and names.3.I found that the homework was not as heavy as what I used to get in my old school.4.I can’t wait to surprise the boys!5.The good news is that these kinds of growing pains do not last.短文填空：1. lost 2. eye 3. pictures 4. bought 5. not 6. recovering 7. whom 8. barked 9. suffering 10. died 11. claim 12. flier 13. saved 14. crying 15. keepKeys to 练习八单项选择：1-5ADCBB 6-10CBBBC 11-15DCCDD 16-20 BCBCD完形填空：1-5 ACBCD 6-10 DCBBC 11-15 BCDDC 16-20 BABBC阅读理解：1-4 BBAC 5-8 BDAD任务型阅读：1. move 2. sights 3. possibility 4. range 5. kinds6. consider7. opinions/views8. ceremony9. obvious 10. open 词汇检测：1. failure 2. recover 3. suffering 4. destination 5. shape同义转换：1. skip 2. convinced 3. home 4. popularity 5. scored句子翻译：1. In this peaceful world, people live in perfect harmony with nature, far away from the noise and worry of the outside world.2. You have to wear a helmet and a life jacket for protection, just in case you fall into the water.3. Unfortunately, all the people were buried alive, and so was the city.4. This is the fourth time that Tom has failed the driving test. He is not discouraged, though.5. On hearing the news that they would have two days off, they jumped with joy as they had been hoping for a good rest.短文填空：1. differently 2. gas/petrol 3. companies 4. holding 5. present 6. ground7. limit 8. moon 9. leaves 10. more。

江苏省盐城市亭湖高级中学高二暑假作业英语试题2 含答案

高二英语暑假作业 2I.单项填空（共15小题；每小题1分，满分15分）1. The "Chinese Dream" is ____ dream to improve people's well-being and ____ dreamof harmony, peace and development.A. the; aB. a; aC. a; theD. the; the2. While intelligent people can often ______ the complex, a fool is more likely tocomplicate the simple.A. sacrificeB. substituteC. simplifyD. survive3. If what your friend comes up with surprises you, don’t reject it immediately. ________,imagine that it is true.A. ThusB. BesidesC. RatherD. Otherwise4. Mrs. Smith finds it hard to clear up the mess, as her children are always ____whenever she tries to.A. in the wayB. on watchC. in sightD. on the line5. Anyone, once ____ positive for H7N9 flu virus, will receive free medical treatment from ourgovernment.A. to be testedB. being testedC. testedD. to test6. With inspiration from other food cultures, American food culture can take a __ for the better.A. shareB. chanceC. turnD. lead7. He was unhappy when he sold his guitar. After all, he _________if for a very long time.A. has had.B. had hadC. hasD. had8. It will be a big help if you go to the store and get what we need for dinner. ________, I will set the table.A. As a resultB. On the wholeC. In the meanwhileD. As a matter of fact9. Team leaders must ensure that all members ______ their natural desire to avoid theembarrassment associated with making mistakes.A. get overB. look overC. take overD. come over10. It be the vocabulary that caused you the problem in the exercise because youknow a lot of words.A. mayB. couldn’tC. shouldD. needn’t11. The subway was crowded with passengers going home from market, most of _____ carrying heavy bags and baskets full of fruit and vegetables they had bought there.A. whomB. themC. whoD. which12. When asked to explain _____ he did to make his students so fascinated with his lessons, the teacher paused and thought deeply.A. what was it thatB. that what it wasC. what it was thatD. what was it13. The president of the World Bank says he has a passion for China, ______ he remembers starting as early as his childhood.A. whereB. whichC. whatD. when14. At no time ________the rules of the game. It was unfair to punish them.A. they actually brokeB. do they actually breakC. did they actually breakD. they had actually broken15. —Would you mind answering some questions on shopping habits?— ________.A. Yes, with great pleasureB. No, I am afraid I can't make itC. Yes, it is worth the timeD. No, as long as it doesn't take longII：完形填空（共20小题；每小题1分，满分20分）New genetic analysis has revealed that many Amazon tree species are likely to survive human-made climate warming in the coming century, contrary to previous findings that temperature increases would cause them to die out. A study, 16 in the latest edition of Ecology and Evolution, reveals the 17 age of some Amazonian tree species -- more than 8 million years -- and 18 shows that they have survived previous periods as warm as many of the global warming imagined periods 19 for the year 2100.The authors write that, having survived warm periods in the past, the trees will 20 survive future warming, provided there are no other major environmental changes. 21 extreme droughts and forest fires will impact Amazonia as temperatures 22 , the trees will stand the direct impact of higher temperatures. The authors 23 that as well as reducing greenhouse gas emissions to minimize the risk of drought and fire, conservation policy should remain 24 on preventing deforestation（采伐森林）for agriculture and mining.The study disagrees with other recent researches which predicted tree species’ extinctions 25 relatively small increases in global average air temperatures.Study co-author Dr Simon Lewis (UCL Geography) said the 26 were good news for Amazon tree species, but warned that drought and over-exploitation of the forest remained major 27 to the Amazon’s future.Dr Lewis said: “The past cannot be compared directly with the future. while tr ee species seem likely to 28 higher air temperatures than today, the Amazon forest is being transformed for agriculture and 29 , and what remains is being degraded by logging, and increasingly split up by fields and roads.“Species will not move as freely in today’s Amazon as they did in previous warm periods, when there was no human 30 . Similarly, today’s climate change is extremely fast, making comparisons with slower changes in the past 31 .”“With a clearer 32 of the relative risks to the Amazon forest, we 33 that direct human impacts -- such as forest clearances for agriculture or mining -- should remain a key point of conservation policy. We also need more aggressive 34 to reduce greenhouse gas emissions in order to make minimum the risk of drought and fire impacts and 35 the future of most Amazon tree species.”16. A. advertised B. described C. published D. presented17. A. frightening B. surprising C. exciting D. interesting18. A. still B. nevertheless C. however D. therefore19. A. assess B. confirm C. forecast D. promise20. A. particularly B. probably C. merely D. possibly21. A. Since B. Although C. When D. If22. A. rise B. change C. drop D. end23. A. consider B. decide C. guarantee D. recommend24. A. based B. built C. focused D. made25. A. in relation to B. in response to C. in reply to D. in reference to26. A. findings B. thoughts C. inventions D. writings27. A. threats B. disadvantages C. embarrassments D. instructions28. A. accept B. tolerate C. permit D. require29. A. farming B. planting C. catering D. mining30. A. power B. influence C. desire D. violence31. A. difficult B. clear C. easy D. important32. A. belief B. direction C. understanding D. suggestion33. A. doubt B. conclude C. calculate D. prefer34. A. thought B. guidance C. protection D. action35. A. secure B. advance C. sacrifice D. evaluateIII：阅读理解（共15小题；每小题2分，满分30分）AWe observe today not a victory of party but a celebration of freedom, symbolizing an end as well as a beginning, signifying renewal as well as change for I have sworn before you and Almighty God the same solemn oath our forbears (ancestors) prescribed nearly a century and three-quarters ago.The world is very different now, for man holds in his mortal hands the power to abolish all forms of human poverty and all forms of human life. And yet the same revolutionary beliefs for which our forbears fought are still at issue around the globe, the belief that the rights of man come not from the generosity of the state but from the hand of God. We dare not forget today that we are the heirs（继承人）of that first revolution.Let the word go forth from this time and place, to friend and foe (enemy) alike, that the torch has been passed to a new generation of Americans born in this century, tempered by war, disciplined by a hard and bitter peace, proud of our ancient heritage and unwilling to disciplined by a hard and bitter peace, proud of our ancient heritage and unwilling to disciplined by a hard and bitter peace, proud of our ancient heritage and unwilling to witness or permit the slow undoing of those human rights to which this nation has always been committed, and to which we are committed today at home and around the world.Let every nation know whether it wishes us well or ill that we shall pay any price, bear any burden, meet any hardship, support any friend, oppose any foe, to assure the survival and the success of liberty. This much we pledge (promise solemny) and more.In the long history of the world, only a few generations have been granted the role of defending freedom in its hour of maximum danger. I do not shrink from this responsibility. I welcome it. I do not believe that any of us would exchange places with any other people or any other generation. The energy, the faith, the devotion which we bring to this endeavor will light our country and all who serve it and the glow from that fire can truly light the world.And so, my fellow Americans ask not what your country can do for you; ask what you can do for your country. My fellow citizens of the world ask not what America will do for you, but what together we can do for the Freedom of Man.Finally, whether you are citizens of America or citizens of the world, ask of us here the same high standards of strength and sacrifice which we ask of you. With a good conscience our only sure reward, with history the final judge of our deeds, let us go forth to lead the land we love, asking His blessing and His help, but knowing that here on earth God’s work must truly be our own.36. What should friends and foes know?A. That the United States is powerful.B. That a new generation of Americans are responsible for their government.C. That the United States is governed by liberals.D. The rights of man come from the hand of God.37. What is Kennedy’s promise to the world?A. To support liberty.B. To abolish all forms of human poverty.C. To visit each country at least once.D. To support and friend.38. What should citizens of the world ask of America?A. How America can help them.B. If America plans to invade their country.C. What they can do for freedom.D. What they can do for America.39. Which of the following statement is NOT true according to the passage?A. Human beings have the power to put an end to all forms of poverty.B. We should remember we are the first revolution.C. Our nation has always been committed to human rights.D. We should assure the survival and the success of liberty.BWhat's the one word of advice a well-meaning professional would give to a recent college graduate? China! India! Brazil! How about trade!When the Commerce Department reported last week that the trade deficit (赤字) in June approached $50 billion, it set off a new round of economic doomsaying（末日说）. Imports, which increasedto $200.3 billion in the month, are subtracted in the calculation of gross domestic product. The larger the trade deficit, the smaller the GDP. Should such imbalances continue, pessimists say, they could contribute to slower growth.But there's another way of looking at the trade data. Over the past two years, the figures on imports and exports seem not to signal a double-dip recession – a renewed decline in the broad level of economic activity in the United States – but an economic expansion.The rising volume of trade –more goods and services shuttling in and out of the United States –is good news for many sectors. Companies engaged in shipping, trucking, rail freight, delivery, and logistics (物流) have all been reporting better than expected results. The rising numbers shows growing vitality in foreign markets – when we import more stuff, it puts more cash in the hands of people around the world, and U.S. exports are rising because more foreigners have the ability to buy the things we produce and market. The rising tide of trade is also good news for people who work in trade-sensitive businesses, especially those that produce commodities for which global demand sets the price – agricultural goods, mining, metals, oil.And while exports always seem to lag, U.S. companies are becoming more involved in the global economy with each passing month. General Motors sells as many cars in China as in America each month. While that may not do much for imports, it does help GM's balance sheet –and hence makes the jobs of U.S.-based executives more stable.One great challenge for the U.S. economy is slack domestic consumer demand. Americans are paying down debt, saving more, and spending more carefully. That's to be expected, given what we've been through. But there's a bigger challenge. Can U.S.-based businesses, large and small, figure out how to get a piece of growing global demand? Unless you want to pick up and move to India, or Brazil, or China, the best way to do that is through trade. It may seem obvious, but it's no longer enough simply to do business with our friends and neighbors here at home.Companies and individuals who don't have a strategy to export more, or to get more involved in foreign markets, or to play a role in global trade, are shutting themselves out of the lion's share of economic opportunity in our world.40. How do pessimists interpret the U.S. trade deficit in June?A. It reflects Americans' preference for imported goods.B. It signifies a change in American economic structure.C. It is the result of America's growing focus on domestic market.D. It could lead to slower growth of the national economy.41. What does the author say about the trade data of the past two years?A. It indicates that economic activities in the U.S. have increased.B. It shows that U.S. economy is slipping further into recession.C. It signals decreasing domestic demand for goods and services.D. It reflects the fluctuations in the international market.42.. Who particularly benefit from the rising volume of trade?A. People who have expertise in international trade.B. Consumers who favor imported goods and services.C. Producers of agricultural goods and raw materials.D. Retailers dealing in foreign goods and services.43. What is the author's advice to U.S. companies and individuals?A. To import more cheap goods from developing countries.B. To move their companies to where labor is cheaper.C. To increase their market share overseas.D. To be alert to fluctuations in foreign markets.CA MENTORING (导师制) program is giving life changing opportunities to Banbury youth.Young Inspirations was founded two years ago to provide mentoring sessions for students and unemployed young adults aged 11 to 21.Alex Goldberg, the program's founder, said; "We set up Young Inspirations because we wanted to give young people experiences which will potentially be life changing and broaden their outlook."We try to create work experience opportunities that will really make a difference to our youth. For example, we've secured internships (实习) with world-famous firms such as Honda."At a time of funding cutbacks where schools are finding it more and more difficult to offer this kind of mentoring, it is extremely important that these opportunities are available both to help youth with their school work and grades and to give them opportunities which may help shape their futures. " Kieran Hepburn, 14, is one of a group of Banbury youth who has benefited from the program so far. In October the Banbury School pupil was accompanied by Young Inspirations staff to Paris where he was an observer at the United Nations Educational, Scientific and Cultural Organization's (UNESCO) International Youth Forum (论坛).The event was held for young people from around the world, to seek their views on how the future of youth and education should look. Kieran joined several hundred observers mostly in their 20s and was the only UK school pupil to attend the event. Kieran thinks the trip was a life changing experience. " Before we left I didn't quite know what to make of it but when we got there we didn't stop, it was amazing," he said, " We went to three or four hours of debates each day and then did something cultural each afternoon. "The main theme of the forum was how youth can drive change in political and public life. It dealt with issues (问题) such as drug abuse, violence and unemployment.Kieran said: " It has really helped me to improve my confidence and social skills as well as my school grades and I was voted most improved pupil at school in August. "The Young Inspirations mentoring sessions take place each Friday in Banbury. For details visit.44. According to the passage, the forum focused on how youth can ____.A. build up their confidence at schoolB. find work experience opportunitiesC. improve their social skills for the futureD. play an active role in the change of society45. We can learn from the passage that _____.A. the visit to the United Kingdom was amazingB. Kieran has made great progress in many aspectsC. the youth have found a way to solve their problemsD. the mentoring sessions are held every day except Friday46. What would be the best title for the passage?A. Alex Goldberg, Founder of Young InspirationsB. Young People Find a World of OpportunityC. Kieran, Banbury School Pupil to ParisD. Debates Help Youth with Their GradesDIn 1974, after filling out fifty applications, going through four interviews, and winning one offer, I look what I could get — a teaching job at what I considered a distant wild area: western New Jersey. My characteristic optimism was alive only when I reminded myself that I would be doing what I had wanted to do since I was fourteen -- teaching English.School started, but I felt more and more as if I were in a foreign country. Was this rural area really New Jersey? My students have a week off when hunting season began. I was told they were also frequently absent in late October to help their fathers make hay on the farms. I was a young woman from New York City, who thought that “Make hay while the sun shines” just meant to have a good time.But, still, I was teaching English. I worked hard, taking time off only to eat and sleep. And then there was my sixth-grade class -- seventeen boys and five girls who were only six years younger than me. I had a problem long before I knew it. I was struggling in my work as a young idealistic teacher. I wanted to make literature come alive and to promote a love of the written word. The students wanted to throw spitballs and whisper dirty words in the back of the room.In college I had been taught that a successful educator should ignore bad behavior. So I did, confident that, as the textbook had said, the bad behavior would disappear as I gave ray students positive attention. It sounds reasonable, but the text evidently ignored the fact that humans, particularly teenagers, rarely seem reasonable. By the time ray boss, who was also ray taskmaster known to be the strictest, most demanding, most quick to fire inexperienced teachers, came into the classroom to observe me, the students exhibited very little good behavior to praise.My boss sat in the back of the room. The boys in the class were making animal noises, hitting each other while the girls filed their nails or read magazines. I just pretended it all wasn’t happening, and went on lecturing and tried to ask some inspiring questions. My boss, sitting in the back of the room, seemed to be growing bigger and bigger. After twenty minutes he left, silently. Visions of unemployment marched before my eyes.I felt mildly victorious that I got through the rest of class without crying, but at my next free period I had to face him. I wondered if he would let me finish out the day. I walked to his office, took a deep breath, and opened the door.He was sitting in his chair, and he looked at me long and hard. I said nothing. All I could thinkof was that I was not an English teacher; I had been lying to myself, pretending that everything was fine.When he spoke, he said simply, without accusation, “You had nothing to say to them.”“You had nothing to say to them," he repeated. “No wonder they’re bored. Why not get to the meal of the literature and stop talking about symbolism. Talk with them, not at them. And more important, why do you ignore their bad behavior?” We talked. He named the problems and offered solutions. We role-played. He was the bad student, and I was the forceful, yet, warm, teacher.As the year progressed, we spent many hours discussing literature and ideas about human beings and their motivations. He helped me identify my weaknesses and my strengths. In short, he made a teacher of me by teaching me the reality of Emerson's words: “The secret to education lies in respecting the pupil.”Fifteen years later I still drive that same winding road to the same school. Thanks to the helpI received that difficult first year, the school is my home now.47. It can be inferred from the story that in 1974 ______.A. the writer became an optimistic personB. the writer was very happy about her new jobC. it was rather difficult to get a job in the USAD. it was easy to get a teaching job in New Jersey48. According to the passage, which of the following is most probably the writer’s problem as a new teacher?A. She had blind trust in what she learnt at college.B. She didn’t ask experienced teachers for advice.C. She took too much time off to eat and sleep.D. She didn’t like teaching English literature.49. The students behaved badly in the writer's classes because ______.A. they were eager to embarrass herB. she didn't really understand themC. they didn't regard her as a good teacherD. she didn’t have a good command of English50. The taskmaster’s a ttitude towards the writer after his observation of her class can be best described as ______.A. cruel but encouragingB. fierce but forgivingC. sincere and supportiveD. angry and aggressiveIV：任务型阅读（共 10 小题，每小题 1 分，满分 10 分）阅读下面短文，根据所读内容在文后第71至第80小题的空格里填上适当的单词。

2017-2018下学期高二期末考试英语试题参考答案

秘密★启用前2017-2018下学期高二年级期末考试英语试题参考答案及评分标准第Ⅰ卷（共100分）第一部分听力（共两节，满分30分）1-5 ACCBC 6-10 ACBAB 11-15 BCBCA 16-20 BACBA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）21-23 BCD 24-27 CDAB 28-31 BBDC 31-35 ACBD第二节（共5小题，每小题2分，满分10分）36-40 ADGBF第三部分英语知识运用（共两节，满分45分）第一节完形填空（共20 小题；每小题1.5分，满分30分）41-45 CDBAA 46-50 CADBD 51-55 CBACD 56-60 CBDAB第Ⅱ卷（主观题满分50分）第三部分英语知识运用第二节（共10分；每小题1.5分，满分15分）61. a 62. competitive 63. to realize 64. What 65. existing/existent66. luck 67. relatives 68. was 69. better 70. for评分标准:６１-７０小题，每小题１.５分。

有任何错误,包括用词错误、单词拼写错误(含大小写)或语法形式错误，均不给分。

第四部分写作(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)Last week I noticed Jack coughing on our math class. See this, I offered to take him to a clinic.in SeeingThere the doctor asked Jack how he had coughed sometimes for long time. Jack nodded his headif/whether aimmediate. The doctor then wrote a prescription with instruction on how to take the Chinese immediately instructionsmedicine. Having tasted the medicine, he almost brings it up. I comforted him with an old sayingbrought“Good medicine for health tastes bitter to the mouth”. Jack managed to swallow them unwillingly.itBut when he had recovered three days later, he felt amazing at the effect of the Chinese medicine.amazed评分标准: 有任何错误, 包括用词、单词拼写(含大小写)或语法形式，均不给分。

贵州省铜仁市2017-2018学年高二下学期数学(文)暑假作业Word版含答案

贵州省铜仁市2017-2018学年高二下学期数学（文）暑假作业一、选择题：本大题共12个小题,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.已知全集{}1,2,3,4U =，若{}1,3A =，{}3B =，则()()U U C A C B 等于( ) A.{}1,2B.{}1,4C.{}2,3D.{}2,42.若复数()()12i 2i z =-+(其中i 为虚数单位)在复平面中对应的点位于( ) A.第一象限B.第二象限C.第三象限D.第四象限3.若双曲线()222:106x y C a a -=>的焦距为a 为( )A.2B.44. 某公司某件产品的定价x 与销量y 之间的统计数据表如下，根据数据，用最小二乘法得出y 与x 的线性回归直线方程为 66y x =+，则表格中n 的值为( )A.25B.30C.40D.455.已知()1f x x =，()2sin f x x =，()3cos f x x =，()(4lg f x x =，从以上四个函数中任意取两个相乘得到新函数，那么所得新函数为奇函数的概率为( ) A.14B.13C.12D.236. 设()x f 是周期为4的奇函数，当10≤≤x 时，())1(x x x f +=，则=⎪⎭⎫⎝⎛-29f ( )A ．43 B ．41- C.41 D ．43- 7.某几何体由上、下两部分组成，其三视图如图所示，其俯视图是由一个半圆与其直径组成的图形，则该几何体上部分与下部分的体积之比为( )A.13B.12C.23D.568. 函数3cos sin y x x x =+的图象大致为（）A ．B ． C.D ．9.已知函数()()π2cos 332f x x ϕϕ⎛⎫=++≤ ⎪⎝⎭，若ππ,612x ⎛⎫∀∈- ⎪⎝⎭，()f x 的图象恒在直线3y =的上方，则ϕ的取值范围是( ) A.ππ,122⎛⎫ ⎪⎝⎭B.ππ,63⎡⎤⎢⎥⎣⎦C.π0,4⎡⎤⎢⎥⎣⎦D.ππ,63⎛⎫- ⎪⎝⎭10.有编号依次为1，2，3，4，5，6的6名学生参加数学竞赛选拔赛，今有甲、乙、丙、丁四位老师在猜谁将得第一名，甲猜不是3号就是5号；乙猜6号不可能；丙猜2号，3号，4号都不可能；丁猜是1号，2号，4号中的某一个.若以上四位老师中只有一位老师猜驿，则猜对者是( ) A.甲B.乙C.丙D.丁11. 抛物线x y C 8:2=的焦点为F ，准线为P l ,是l 上一点，连接PF 并延长交抛物线C 于点Q ，若PQ PF 54=，则=QF ( )A ．3B ．4 C.5 D ．6 12.已知函数()ln 2x axf x x-=，若有且仅有一个整数k ，使得()1f k >，则实数a 的取值范围是( ) A.(]1,3B.1111ln 2,ln 34262⎡⎫--⎪⎢⎣⎭C.11ln 21,ln 3123⎡⎫--⎪⎢⎣⎭D.11,e 1e ⎛⎤-- ⎥⎝⎦二、填空题：每题5分，满分20分.13.已知()3,2a m =- ，()1,2b m =- ，()2,1c =-，若()a cb -⊥ ，则实数m =______________.14.已知变量x ，y 满足约束条件10101x y x y y --≤⎧⎪++≥⎨⎪≤⎩，则21z x y =++的最大值为______________.15.在ABC ∆中，若6:4:3sin :sin :sin =C B A ，则=B cos ______________.16. 已知数列{}n a 满足：()*31223...2222n n a a a a n n N ++++=∈，数列2211log log nn a a +⎧⎫⎨⎬⋅⎩⎭的前n 项和为n S ，则n S =___________.三、解答题：本大题共6小题，共70分.解答应写出文字说明、证明过程或演算步骤. 17. 各项均为正数的等比数列{}n a 的前n 项和为n S .已知13a =，339S =. （Ⅰ）求数列{}n a 的通项公式；（Ⅱ）设数列{}n c 满足nn nS c a =，求数列{}n c 的前n 项和n T .18. 某组织在某市征集志愿者参加志愿活动，现随机抽出60名男生和40名女生共100人进行调查，统计出100名市民中愿意参加志愿活动和不愿意参加志愿活动的男女生比例情况，具体数据如图所示. (1)完成下列22⨯列联表，并判断是否有99%的把握认为愿意参与志愿活动与性别有关？(2)现用分层抽样的方法从愿意参加志愿活动的市民中选取7名志愿者，再从中抽取2人作为队长，求抽取的2人至少有一名女生的概率. 参考数据及公式：()()()()()()22n ad bc K n a b c d a b c d a c b d -==+++++++.19.已知正方形ABCD 的边长为2，分别以AB ，BC 为一边在空间中作正三角形PAB ，PBC ，延长CD 到点E ，使2CE CD =，连接AE ，PE .(1)证明：AE ⊥平面PAC ； (2)求点B 到平面PAE 的距离.20. 已知椭圆C 的两个焦点分别为()1F ，)2F ，且椭圆C 过点P ⎛ ⎝⎭.(1)求椭圆C 的标准方程；(2)若与直线OP 平行的直线交椭圆C 于A ，B 两点，当OA OB ⊥时，求AOB △的面积.21.已知函数()e sin cos x f x x x =-，()cos x g x x x =，其中e 是自然常数. (1)判断函数()y f x =在π0,2⎛⎫⎪⎝⎭内零点的个数，并说明理由；(2)1π0,2x ⎡⎤∀∈⎢⎥⎣⎦，2π0,2x ⎡⎤∃∈⎢⎥⎣⎦，使得不等式()()12f x g x m +≥成立，试求实数m 的取值范围.22. （二）选考题：共10分．请考生在第22、23题中任选一题作答．如果多做，则按所做的第一题计分．选修4-4：坐标系与参数方程(1).在直角坐标系xOy 中，曲线1C 的参数方程为⎩⎨⎧α=α=sin cos 3y x （其中α为参数），曲线()11:222=+-y x C ，以坐标原点O 为极点，以x 轴正半轴为极轴建立极坐标系. (Ⅰ)求曲线1C 的普通方程和曲线2C 的极坐标方程；(Ⅱ)若射线）（06>ρπ=θ与曲线1C ，2C 分别交于B A ,两点，求AB .[选修4-5：不等式选讲](2).设函数()2f x x a x =-+，其中0a >.(Ⅰ)当2a =时，求不等式()21f x x ≥+的解集；(Ⅱ)若(2,)x ∈-+∞时，恒有()0f x >，求a 的取值范围.贵州省铜仁市2017-2018学年高二下学期数学（文）暑假作业答案一、选择题1-5:DDA C C 6-10:DCDCC 11-12：CB 二、填空题13. 7 14. 6 15. 3629 16. 1n n +三、解答题17.解:(Ⅰ)设{}n a 的公比为q ，由13a =，339S =得12111=339a a a q a q ⎧⎨++=⎩，于是2120q q +-=，解得3q =（4q =-不符合题意，舍去）故111333n n n n a a q --==⨯=．(Ⅱ)由(Ⅰ)得3(31)2n n S =-，则331223n n n n S c a ==-⨯，则23311(2233n T n =-++…1)3n +111(1)3331333122243413n n n --=-⨯=+-⨯-． 18.解：（Ⅰ）计算222()100(15204520) 6.59 6.635()()()()60403565n ad bc K a b c d a c b d -⨯-⨯==≈<++++⨯⨯⨯，所以没有99%的把握认为愿意参与志愿活动与性别有关．（Ⅱ）用分层抽样的方法从愿意参加志愿活动的市民中选取7名志愿者，则女生4人，男生3人，分别编号为{1234}{}a b c ，，，，，，，从中任取两人的所有基本事件如下： {12}{13}{14}{1}{1}{1}{23}{24}{2}{2}{2}{34}a b c a b c ，，，，，，，，，，，，，，，，，，，，，，，，{3}{3}{3}{4}{4}{4}{}{}{}.a b c a b c a b a c b c ，，，，，，，，，，，，，，，，，共有21种情况，其中满足两人中至少有一人是女生的基本事件数有18个，抽取的2人至少有一名女生的概率186217P ==． 19.解：(1)连接BD 交AC 于点O ，并连接OP ，则OA OB OC ==，又∵PC PA =， ∴PO AC ⊥，又∵POB POC △≌△，∴90POB POC ==∠∠°，∴PO BD ⊥， ∵OB OC O = ，∴PO ⊥平面ABCD ，∵AE ⊂平面ABCD ，∴PO AE ⊥， ∵AD CD ⊥，AD DE CD ==，∴45EAD CAD ==∠∠°，∴90EAC =∠°，即AE AC ⊥，∵PO AC O = ，∴AE ⊥平面PAC .(2)由题知，AB DE ∥，且AB DE =，可得四边形ABDE 为平行四边形，∴BD AE ∥，又∵BD ⊄平面PAE ，∴BD ∥平面PAE ，∵点O BD ∈，∴点B 到平面PAE 的距离等于O 点到平面PAE 的距离，取AP 的中点为F ，连接OF ，则由(1)可得OF AE ⊥.在Rt ABC △中，PO =PO AO =，∴OF PA ⊥，∴OF ⊥平面PAE ，即OF 为点O 到平面PAE 的距离.在Rt POA △中，112OF PA ==，得点B 到平面PAE 的距离为1.20.解：（Ⅰ）设椭圆C 的方程为22221(0)x y a b a b+=>>，由题意可得222231314a b ab ⎧-=⎪⎨+=⎪⎩，，解得2241a b ⎧=⎪⎨=⎪⎩，，故椭圆C 的方程为2214x y +=．（Ⅱ）直线OP的方程为y =，设直线AB方程为y m =+，1122()()A x y B x y ，，，．将直线AB 的方程代入椭圆C的方程并整理得2210x m +-=，由2234(1)0m m ∆=-->，得24m <，122121x x x x m ⎧+=⎪⎨=-⎪⎩，，由OA OB ⊥得，0OA OB =，12121212OA OB x x y y x x m m ⎫=+=+++⎪⎪⎝⎭⎝⎭212127()4x x x x m =++227(1)()4m m =-++ 257044m =-=，得275m =．又||AB = O 到直线AB的距离d =．所以11||22AOB S AB d === △． 21.解：(1)函数()y f x =在π0,2⎛⎫ ⎪⎝⎭上的零点的个数为1，理由如下：因为()e sin cos x f x x x =-，所以()'e sin e cos sin x x f x x x x =++，因为π02x <<，所以()'0f x >，所以函数()f x 在π0,2⎛⎫ ⎪⎝⎭上单调递增. 因为()010f =-<，π2πe 02f ⎛⎫=> ⎪⎝⎭，根据函数零点存在性定理得函数()y f x =在π0,2⎛⎫ ⎪⎝⎭上存在1个零点. (2)因为不等式()()12f x g x m +≥等价于()()12f x m g x ≥-，所以1π0,2x ⎡⎤∀∈⎢⎥⎣⎦，2π0,2x ⎡⎤∃∈⎢⎥⎣⎦，使得不等式()()12f x g x m +≥成立，等价于 ()()()12min min f x m g x ≥-，即()()12min max f x m g x ≥-，当π0,2x ⎡⎤∈⎢⎥⎣⎦时，()'e sin e cos sin 0x x f x x x x =++>，故()f x 在区间π0,2⎡⎤⎢⎥⎣⎦上单调递增，所以当0x =时，()f x 取得最小值1-，又()'cos sin x g x x x x =-，当π0,2x ⎡⎤∈⎢⎥⎣⎦时，0cos 1x ≤≤，sin 0x x ≥x ()'0g x <，故函数()g x 在区间π0,2⎡⎤⎢⎥⎣⎦上单调递减.因此，当0x =时，()g x 取得最大值(1m -≥-，所以1m ≤，所以实数m 的取值范围为(,1-∞--. 22.解：（Ⅰ）由⎩⎨⎧α=α=sin cos 3y x 得1322=+y x ，所以曲线1C 的普通方程为1322=+y x .把θρ=θρ=sin ,cos y x ，代入()1122=+-y x ，得到()()1sin 1cos 22=θρ+-θρ，化简得到曲线2C 的极坐标方程为θ=ρcos 2. （Ⅱ）依题意可设⎪⎭⎫ ⎝⎛πρ⎪⎭⎫ ⎝⎛πρ6,,6,21B A ,曲线1C 的极坐标方程为3sin 2222=θρ+ρ. 将()06>ρπ=θ代入1C 的极坐标方程得32122=ρ+ρ，解得21=ρ. 将()06>ρπ=θ代入2C 的极坐标方程得32=ρ. 所以2321-=ρ-ρ=AB .(2).解：（Ⅰ）.当2a =时，2221x x x -+≥+，所以21x -≥，所以3x ≥或1x ≤，解集为(,1][3,)-∞+∞ .（Ⅱ）3,(),x a x a f x x a x a -≥⎧=⎨+<⎩，因为0a >，∴x a ≥时，320x a a -≥>恒成立，又x a <时，当2x >-时，2x a a +>-+，∴只需20a -+≥即可，所以2a ≥.。

2017—2018学年度第二学期期末考试高二数学理科(带答案

2017—2018学年度第二学期期末考试高二数学（理）试题一、选择题：本题共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. 设集合A=｛4，5，7，9｝，B=｛3，4，7，8，9｝，全集U A B =U ，则集合）（B A C U I 中的元素共有（） A .3个 B. 4个C.5个D.6个2. 复数3223ii+=-( ) A.1 B.1-C.iD.i -3．已知)1,1(),2,(a n a m -=-=，且n m //，则a=（） A ．﹣1B ．2或﹣1C ．2D ．﹣24. 在区间[]1,1-上随机选取一个实数x ，则事件"210"x -< 的概率为（）A ．12B ．34C ．23D ．145. 已知tan a =4,cot β=13,则tan(a+β)=（）A.711B.711-C. 713D.713-6．在6)2(y x -的展开式中，含24y x 的项的系数是（） A ．15 B ．-15C ．60D ． -607.执行如图所示的程序框图，若输入的a 为2，则输出的a 值是（）A. 2B. 1C.21D.1-8. 设非零向量a 、b 、c 满足c b a c b a =+==|,|||||，则>=<b a ,（） A.150°B.120°C.60°D.30°9. 甲组有5名男同学、3名女同学；乙组有6名男同学、2名女同学，若从甲、乙两组中各选出2名同学，则选出的4人中恰有1名女同学的不同选法共有（） A.150种B.180种C.300种D.345种10．下列四个结论中正确的个数是（1）对于命题,:0R x p ∈∃使得0120≤-x ，则,:R x p ∈∀⌝都有012>-x ；（2）已知),2(~2σN X ，则 (2)0.5P X >=（3）已知回归直线的斜率的估计值是2，样本点的中心为（4,5），则回归直线方程为32ˆ-=x y；（4）“1≥x ”是“21≥+xx ”的充分不必要条件. A ．1B ．2C ．3D ．411.正方体1111ABCD A B C D -中，若1D AC △外接圆半径为26，则该正方体外接球的表面积为( ) A.2πB.8πC.12πD.16π12.已知奇函数()f x 的导函数为()f x '，当0x ≠时，()()0f x f x x'+>，若11(),()a f b ef e e e==--，()1c f =，则,,a b c 的大小关系正确的是（） A ．a b c << B ．b c a << C ．c a b << D ．a c b <<二、填空题：本题共4小题，每小题5分，共20分。