北京市朝阳区2013~2014学年度第一学期高三年级期末练习
北京市朝阳区2014高三第一学期期末考试含答案
北京市旭日区 2014~2015 学年度高三年级第一学期期末一致考试生物学科试卷(考试时间90 分钟满分100分)2015. 1一、选择题(每题只有一个正确答案。
1~ 30 题每题 1 分, 31~ 35 题每题 3 分,共 45 分)1.人们常常食用的牛、羊、猪等肉类和白菜、土豆等蔬菜,经消化汲取后,此中的成分可被转变成人体的构成成分。
对以上事实解说合理的是A.构成生物体细胞的化学元素在无机自然界都能找到B.不一样生物的细胞内,构成它们的化学元素含量大体相同C.构成生物体细胞的生物大分子都是以碳链作为骨架D.不一样生物的细胞内,构成它们的化学元素种类大体相同2.生物膜系统在细胞的生命活动中发挥着极其重要的作用。
图1~3表示3种生物膜结构及其所发生的部分生理过程。
以下说法错误..的是A .图 1、图 3 所示生理过程的发生场所分别是线粒体内膜和叶绿体内膜B .图 2 特定受体蛋白与特定信号分子联合,说明细胞间可进行信息交流C.从图 1、图 3 所示的生理过程可知,陪伴H+的运输有ATP 生成D .图 1~ 3 中生物膜功能不一样,主要因为生物膜上蛋白质种类不一样3.以下关于酶的表达,正确的选项是A.酶拥有催化作用并都能与双缩脲试剂反响呈紫色B.细胞代谢可以井井有条地进行与酶的专一性相关C.酶适合在最适温度及最适 pH 条件下长久保存D.可用过氧化氢作底物来研究温度对酶活性的影响4.图甲表示全光照和不一样程度遮光对某植物叶片中叶绿素含量的影响,图乙表示初夏某天在遮光 50%条件下,温度、光照强度、该植物净光合速率平和孔导度(气孔张开的程度)的日变化趋向。
以下说法错误的是..A.图甲中叶绿素含量的测定,可先用无水乙醇提取叶片中的色素B.据图甲推测,该植物可经过增添叶绿素含量以加强对弱光的适应能力C.图乙中8:00 到 12:00 净光合速率降低的原由必定是光合作用速率减弱D .图乙中18:00 岁月合作用固定CO2速率和呼吸作用开释CO2速率相等5.以下图表示雄果蝇体内某细胞分裂过程中,细胞内每条染色体DNA 含量变化(甲曲线)及与之对应的细胞中染色体数目变化(乙曲线)。
北京市朝阳区2014届高三上学期期末考试-数学文试题
北京市朝阳区2014届高三上学期期末考试-数学文试题北京市朝阳区2013-2014学年度高三年级第一学期期末统一考试数学试卷(文史类) 2014.1(考试时间120分钟 满分150分)本试卷分为选择题(共40分)和非选择题(共110分)两部分第一部分(选择题 共40分)一、选择题:本大题共8小题,每小题5分,共40分.在每小题给出的四个选项中,选出符合题目要求的一项.1.已知集合{}2log 0A x x =≥,集合{}01B x x =<<,则A B =A.}{0x x >B. }{1x x >C. }{011x x x <<>或D. ∅2.为了得到函数22y x =-的图象,可以把函数2y x =的图象上所有的点A. 向右平行移动2个单位长度B .向右平行移动1个单位长度 C. 向左平行移动2个单位长度D. 向左平行移动1个单位长度 3. 执行如图所示的程序框图,输出的k 值为A. 6B. 24C. 120D.720 开k i k =k i =是i >5? 否A. 7-B. 1-C. 34D. 7 7. 若双曲线C :222(0)xy m m -=>与抛物线xy162=的准线交于,A B 两点,且43AB =,则m 的值是 A. 116 B. 80 C. 52D. 208. 函数2()3f x xx=-的图象为曲线1C ,函数2()4g x x =-的图象为曲线2C ,过x 轴上的动点(,0)(03)M a a ≤≤作垂直于x 轴的直线分别交曲线1C ,2C 于,A B 两点,则线段AB 长度的最大值为 A .2 B .4 C . 5D .418第二部分(非选择题 共110分)二、填空题:本大题共6小题,每小题5分,共30分.把答案填在答题卡上. 9.已知数列{}na 为等差数列,若1358a aa ++=,24620aa a ++=,则公差d = .10.已知三棱锥的三视图如图所示,则该三棱锥的体积是 ;表面积是 .11111. 某校为了解高一学生寒假期间的阅读情况,抽查并统计了100名同学的某一周阅读时间,绘制了频率分布直方图(如图所示)那么这100名学生中阅读时间在[4,8)小时内的人数为_____.频率/0.04 0.05 0.12 小8 4 2 6 110.150.12.直线l :360x y --=被圆:C ()221(2)5x y -+-=截得的弦AB 的长是 .13.在△ABC 中, ︒=∠120A ,1AB AC ⋅=-,则ABAC =;||BC 的最小值是 .14.用一个平面去截正方体,有可能截得的是以下平面图形中的 .(写出满足条件的图形序号) (1)正三角形 (2)梯形 (3)直角三角形 (4)矩形三、解答题:本大题共6小题,共80分.解答应写出文字说明,演算步骤或证明过程. 15.(本题满分13分)已知函数22()3sin2sin cos cos 2f x x x x x =++-.(Ⅰ)求()4f π的值; (Ⅱ)求函数()f x 的最小正周期及单调递增区间. 16. (本题满分13分)甲、乙两名同学参加“汉字听写大赛”选拔性测试.在相同的测试条件下,两人5次测试的成绩(单位:分)如下表:第1次 第2次 第3次 第4次 第5次 甲5855769288乙65 82 87 85 95(Ⅰ)请画出甲、乙两人成绩的茎叶图. 你认为选派谁参赛更好?说明理由(不用计算);(Ⅱ)若从甲、乙两人5次的成绩中各随机抽取一个成绩进行分析,求抽到的两个成绩中至少有一个高于90分的概率.17. (本题满分14分)如图,在三棱锥P ABC -中,平面PAC ⊥平面ABC,PA AC⊥,AB BC⊥.设D ,E 分别为PA ,AC 中点.(Ⅰ)求证:DE ∥平面PBC ; (Ⅱ)求证:BC ⊥平面PAB ;(Ⅲ)试问在线段AB 上是否存在点F ,使得过三点D ,E ,F的平面内的任一条直线都与平面PBC 平行?若存在,指出点F 的位置并证明;若不存在,请说明理由.DEBAPC18.(本题满分13分)已知函数322()f x xax a x=--,其中0a ≥.(Ⅰ)若(0)4f '=-,求a 的值,并求此时曲线()y f x =在点(1,(1))f 处的切线方程;(Ⅱ)求函数()f x 在区间[]0,2上的最小值. 19.(本题满分14分)已知椭圆C 两焦点坐标分别为1(2,0)F -,2(2,0)F ,一个顶点为(0,1)A -.(Ⅰ)求椭圆C 的标准方程;(Ⅱ)是否存在斜率为(0)k k ≠的直线l ,使直线l 与椭圆C交于不同的两点,M N ,满足AM AN =. 若存在,求出k 的取值范围;若不存在,说明理由.20. (本题满分13分)已知数列{}na 的通项19210nn a n ⎛⎫⎛⎫=-⋅ ⎪ ⎪⎝⎭⎝⎭,n *∈N .(Ⅰ)求12,a a ;(Ⅱ)判断数列{}na 的增减性,并说明理由;(Ⅲ) 设1nn nb a a +=-,求数列1n nb b+⎧⎫⎨⎬⎩⎭的最大项和最小项.北京市朝阳区2013-2014学年度高三年级第一学期期末统一考试数学答案(文史类) 2014.1一、选择题: 题号 12 3 4 5 6 7 8 答案A BCABDDD二、填空题: 三、解答题: 15.解:(Ⅰ)依题意2()2sinsin 21f x x x =+-=sin 2cos2x x- =2)4x π-.则()2)1444f πππ=⨯-=. ………….7分(Ⅱ)()f x 的最小正周期Τ2π==π2. 当ππ2π22242k x k ππ-≤-≤+时,即π3πππ88k x k -≤≤+时,()f x 为增题号 9 10 11 12 13 14 答案416,332+ 54102,6(1)(2)(4)函数.则函数()f x 的单调增区间为π3ππ,π88k k ⎡⎤-+⎢⎥⎣⎦,k ∈Z . ………….13分16 . 解:(Ⅰ)茎叶图如右图所示,由图可知,乙的平均成绩大于甲的平均成绩,且乙的方差小于甲的方差,因此应选派乙参赛更好. ……….6分 (Ⅱ)设事件A :抽到的成绩中至少有一个高于90分.从甲、乙两人5次的成绩中各随机抽取一个成绩,所{}{}{{}{}{{}{}{{}{}{{}{}{58,65,58,82,58,8755,65,55,82,55,8776,65,76,82,76,888,65,88,82,88,8792,65,92,82,92,87有的基本事件如下:共25个.事件A 包含的基本事件有{}{}{}{}{}{}{}{}{}58,95,55,95,76,95,88,95,92,65,92,82,92,87,92,85,92,95 共9个.所以9()25P A =,即抽到的成绩中至少有一个高于90分的概率为925. ……….13分8 75 6 9 8 2 6 甲 乙55 7 2 5 8 517. 证明:(Ⅰ)因为点E 是AC 中点,点D 为PA 的中点,所以DE ∥PC .又因为DE ⊄面PBC ,PC ⊂面PBC , 所以DE∥平面PBC. ………….4分(Ⅱ)因为平面PAC ⊥面ABC , 平面PAC 平面ABC =AC ,又PA ⊂平面PAC ,PA AC ⊥,所以PA ⊥面ABC .所以PA BC ⊥. 又因为AB BC ⊥,且PA AB=A,所以BC ⊥面PAB.……….9分(Ⅲ)当点F 是线段AB 中点时,过点D ,E ,F 的平面内的任一条直线都与平面PBC 平行. 取AB 中点F ,连EF ,连DF . 由(Ⅰ)可知DE ∥平面PBC . 因为点E 是AC 中点,点F 为AB 的中点,所以EF ∥BC .又因为EF ⊄平面PBC ,BC ⊂平面PBC , 所以EF ∥平面PBC .D EBA PCF又因为DEEF =E,所以平面DEF ∥平面PBC ,所以平面DEF 内的任一条直线都与平面PBC 平行.故当点F 是线段AB 中点时,过点D ,E ,F 所在平面内的任一条直线都与平面PBC平行.……….14分 18. 解:(Ⅰ)已知函数322()f x xax a x=--, 所以22()32f x xax a '=--,2(0)4f a'=-=-,又0a ≥,所以2a =. 又(1)5,(1)5f f '=-=-,所以曲线()y f x =在点(1,(1))f 处的切线方程为50x y +=. ………….…..…5分(Ⅱ)[]0,2x ∈,22()32()(3)f x xax a x a x a '=--=-+令()0f x '=,则12,3a x xa=-=.(1)当0a =时,2()30f x x'=≥在[]0,2上恒成立,所以函数()f x 在区间[]0,2上单调递增,所以min ()(0)0f x f ==;(2)当02a <<时,在区间[0,)a 上,()0f x '<,在区间(,2]a 上,()0f x '>,所以函数()f x 在区间[0,)a 上单调递减,在区间(,2]a 上单调递增,且x a =是[]0,2 上唯一极值点,所以3min()()f x f a a ==-;(3)当2a ≥时,在区间[]0,2上,()0f x '≤(仅有当2a =时(2)0f '=),所以()f x 在区间[]0,2上单调递减 所以函数2min()(2)842f x f a a ==--.综上所述,当02a ≤<时,函数()f x 的最小值为3a -,2a ≥时,函数()f x 的最小值为2842a a -- ………………13分19.解:(Ⅰ)设椭圆方程为22221(0)x y a b a b+=>>.则依题意 2c =1b =,所以2223ab c =+=于是椭圆C的方程为2213x y +=……….4分(Ⅱ)存在这样的直线l . 依题意,直线l 的斜率存在设直线l 的方程为y kx m =+,则 由2213x y y kx m ⎧+=⎪⎨⎪=+⎩得222(31)6330k x kmx m +++-=因为2222364(31)(33)0k m k m ∆=-+->得22310km -+>………………①设1122(,),(,)M x y N x y ,线段MN 中点为0(,)P x y ,则12221226313331km x x k m x x k ⎧+=-⎪⎪+⎨-⎪=⎪+⎩于是000223,3131km mx y kx m k k =-=+=++因为AM AN =,所以AP MN ⊥.若0m =,则直线l 过原点,(0,0)P ,不合题意. 若m ≠,由k ≠得,0011y k x +=-,整理得2231m k =+………………②由①②知,21k <, 所以11k -<<又k ≠,所以(1,0)(0,1)k ∈-.……….14分 20.(Ⅰ)10.45a=,21.215a=. ……….2分(Ⅱ)11(0.5)0.9(0.5)0.9n nn na a n n ++-=+⋅--⋅ 0.9(0.90.450.5)nn n =+-+0.10.9(9.5)n n =-⨯⨯-.则当19n ≤≤时,1n n a a +->,则110n ≤≤时,数列{}na 为递增数列,n *∈N ;当10n ≥时,10n n a a +-<,数列{}na 为递减数列,n *∈N . ……….7分(Ⅲ)由上问可得,10.10.9(9.5)n nn n b a a n +=-=-⨯⨯-,n *∈N .令1n nnb cb +=,即求数列{}nc 的最大项和最小项.则18.50.99.5n nn b n cb n +-==⋅-=10.9(1)9.5n +-.则数列{}nc 在19n ≤≤时递减,此时90.9n cc ≤<,即0.90.9nc-≤<;数列{}nc 在10n ≥ 时递减,此时100.9nc c <≤,即0.9 2.7nc<≤.因此数列{}nc 的最大项为10 2.7c =,最小项为90.9c =-. ……….….13分。
高中高考-朝阳期末答案
北京市朝阳区2013~2014学年度第一学期高三年级期末练习化学试卷2014.1第一部分(选择题共42分)本部分共14小题,每小题3分,共42分。
在每小题列出的四个选项中,选出最符合题目要求的一项。
题号1234567答案A C C C D B D题号891011121314答案D A B D A C D第二部分(非选择题共58分)15.(11分)(1)SO2+Br2+2H2O==SO42—+2Br—+4H+(2)SO 2+H2O H2SO3;2H2SO3+O2==2H2SO4(3)① 1.6酸(1分)NaHSO 3溶液中存在HSO3—H++SO32—和HSO3—+H2O H2SO3+OH—,HSO3—的电离程度大于其水解程度②2NaHSO3+O2==Na2SO4+H2SO416.(12分)(1)①N 2(g)+3H2(g)2NH3(g)ΔH=—92.2kJ·mol-1②391(2)①200℃②AC③75%(3)2NH3-6e—+6OH—==N2+6H2O17.(12分)(1)Fe2O3+6H+==2Fe3++3H2O(2)SiO2(1分)(3)45%~50%;(1分)100℃(1分)(4)H 2O 2+2Fe 2++2H +==2H 2O +2Fe 3+(5)1﹕1(1分)(6)使用Ca(OH)2,既能调节溶液的pH ,又生成溶解度较小的CaSO 4,得到的液体聚合硫酸铝铁的纯度较高。
(7)2Al -6e —+3H 2O ==Al 2O 3+6H +18.(12分)(1)碳碳双键(1分)(2)(3)(4)(5)取代反应(1分)(6)(7)19.(11分)(1)<(1分)(2)①Fe 3++3H 2OFe(OH)3+3H +,加入Na 2SO 3后,c (H +)下降,平衡正向移动,生成Fe(OH)3②2Fe 3++SO 32-+H 2O ==2Fe 2++SO 42-+2H +(3)FeSO 3和FeCl 3的混合溶液也可能出现“丁达尔效应”(4)①a②H 2SO 3H ++HSO 3—;HSO 3—H ++SO 32—,SO 32—与被还原生成的Fe 2+结合为FeSO 3,与剩余的FeCl 3溶液混合而呈现红褐色CH 2CH 2Cl +NaOHH 2O△CH 2CH 2OH +NaClOCCH 3O COCH 3O CH 2COOCH 2CH 3CH 2OCH OC —COOCH 2CH 3CH 3CH 2—COOCH 2CH 3C —C —CNHCNH —HH nOOCH 3CH 2O —O。
地理卷_2014届北京市朝阳区高三第一学期期末统一考试(2014.01)
,台风影
4. ( 12 分) ( 1)方式:沙尘暴(沙尘天气) ( 1 分);
条件:春季, 冷锋(低压、 大风)天气, 华北地区空气干燥 (降水少),植被覆盖率低。
(答对 3 项得 3 分)
( 2)植树种草,改善了生态环境( 2 分);发展盐业、药材和饮料加工、旅游等产业,实现
产业多元化,延长了产业链,提高了经济效益(增加了附加值)
。酒庄聘请中国农科院专
家和国外著名酿酒师指导。 ( 1)根据图中信息,描述该区的地势特征。 (3 分)
( 2)概括该区葡萄酒庄产业的生产特点。 ( 5 分)
( 3)结合材料,简析该酒庄分布区成为最适宜葡萄酒生产地区的自然条件。
( 6 分)
2. 读中亚与我国新疆部分地区示意图(图 10),完成下列问题。 ( 15 分)
地理学科试卷
2014. 1
第Ⅱ卷(非选择题,共 50 分)
本卷共 4 道题。
1. 读北京某区葡萄酒庄分布及某酒庄生产示意图(图
9)和材料,完成下列问题。 ( 14 分)
种植
酿造
自主销售
图9
俱乐部
第 5页 共 8页
材料: 该区酒庄分布区被法国专家誉为最适宜葡萄酒生产的地区。
多数酒庄分布在沙土
地带,采用人工除草和生物防虫,许多产品达到国际“有机认证”
地形起伏小(平坦) ,便于耕作;临近河流,水源充足。 (答对 3 项得 6 分)
2. ( 15 分)
( 1)夏季温差大(中午炎热、夜晚寒冷) ;冬季寒冷,多大风、沙尘、暴雪天气(答对其
1
得分);气候干旱。 (以上气候类,答对 2 项得 2 分)水源(径流)少( 1 分);植被稀少( 1 分);沙漠或戈壁广布( 1 分);穿越山地( 1 分)。(以上,答对 3 项得 3 分)
北京市朝阳区高三英语上学期期末考试试题北师大版
北京市朝阳区2013—2014学年度高三年级第一学期期末统一考试英语学科试卷(考试时间120分钟满分150分)本试卷共12页,共150分。
考试时长120分钟。
考生务必将答案答在答题卡上,在试卷上作答无效。
考试结束后,将本试卷和答题卡一并交回。
第一部分:听力理解(共三节,30分)第一节(共5小题;每小题1.5分,共7.5分)听下面5段对话。
每段对话后有一道小题,从每题所给的A、B、C三个选项中选出最佳选项。
听完每段对话后,你将有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话你将听一遍。
例:What is the man going to read?A. A newspaper.B. A magazine.C. A book.答案是A。
1. Where is the man?A. At a repair shop.B. At the cleaner’s.C. At the post office.2. What is the woman trying to do?A. Get some small change.B. Find a shoppingcenter.C. Find a parking center.3. What is the man doing?A. Asking for permission.B. Offering information.C. Making an invitation.4. How does the man feel about the news?A. Pleased.B. Uninterested.C. Doubtful.5. What are the speakers talking about?A. A vacation abroad.B. An excitingexperience. C. An imaginary situation.第二节(共10小题;每小题1.5分,共15分)听下面4段对话或独白。
北京市2013-2014朝阳高三上续期期末理科数学含答案-含答案
北京市朝阳区2013-2014学年度高三年级第一学期期末统一考试数学试卷(理工类) 2014.1(考试时间120分钟 满分150分)本试卷分为选择题(共40分)和非选择题(共110分)两部分第一部分(选择题 共40分)一、选择题:本大题共8小题,每小题5分,共40分.在每小题给出的四个选项中,选出符合题目要求的一项. 1.函数1()1f x x =+- A .[0,)+∞ B .(1,)+∞ C .[0,1)(1,)+∞ D .[0,1)2.如果点()02,P y 在以点F 为焦点的抛物线24y x =上,则PF = A .1 B .2 C .3 D .43.命题p :22,0x x ax a ∀∈++≥R ;命题q :x ∃∈R ,sin cos 2x x +=,则下列命题中为真命题的是A .p q ∧B .p q ∨C .()p q ⌝∨D .()()p q ⌝∧⌝4.在△ABC 中,︒=∠30A,AB =1BC =, 则△ABC 的面积等于A .23 B .43 C .23或3 D .23或435.执行如图所示的程序框图,输出结果是4. 若{}01,2,3a ∈,则0a 所有可能的取值为A .1,2,3B .1C .2D .1,26.已知正方形的四个顶点分别为(0,0)O ,(1,0)A ,(1,1)B ,(0,1)C ,点,D E 分别在线段,OC AB 上运动,且OD BE =,设AD 与OE 交于点G ,则点G 的轨迹方程是A .(1)(01)y x x x =-≤≤B .(1)(01)x y y y =-≤≤C .2(01)y x x =≤≤ D .21(01)y x x =-≤≤7.已知平面向量a ,b 的夹角为120,且1⋅=-a b ,则||-a b 的最小值为 A .BCD . 18.已知数列{}n a 满足(,01)n n a n k n k *=⋅∈<<N 下面说法正确的是①当12k =时,数列{}n a 为递减数列; ②当112k <<时,数列{}n a 不一定有最大项; ③当102k <<时,数列{}n a 为递减数列;④当1k k-为正整数时,数列{}n a 必有两项相等的最大项.A. ①②B. ②④C. ③④D. ②③第二部分(非选择题 共110分)二、填空题:本大题共6小题,每小题5分,共30分.把答案填在答题卡上. 9.某校为了解高一学生寒假期间的阅读情况,抽查并统计了100名同学的某一周阅读时间,绘制了频率分布直方图(如图所示),那么这100名学生中阅读时间在[4,8)小时内的人数为_____.10.在各项均为正数的等比数列{}n a 中,若2228log log 1a a +=,则37a a ⋅= . 11.直线y kx =与圆22(2)4x y -+=相交于O ,A两点,若OA k 的值0.040.05 0.12是_____.12.一个三棱锥的三视图如图所示,则该三棱锥的体积是 ;表面积是 .13.实数,x y 满足3,20,x y x y +≥⎧⎨-≤⎩若(2)y k x ≥+恒成立,则实数k 的最大值是 .14.所有真约数(除本身之外的正约数)的和等于它本身的正整数叫做完全数. 如:6=123++;28=124714++++;496=1248163162124248++++++++.已经证明:若21n-是质数,则12(21)n n --是完全数,n *∈N .请写出一个四位完全数 ;又623=⨯,所以6的所有正约数之和可表示为(12)(13)+⋅+;22827=⨯,所以28的所有正约数之和可表示为2(122)(17)++⋅+;按此规律,496的所有正约数之和可表示为 .三、解答题:本大题共6小题,共80分.解答应写出文字说明,演算步骤或证明过程. 15.(本题满分13分)已知函数2()cos sin 1f x x x =--+. (Ⅰ)求函数)(x f 的最小值; (Ⅱ)若5()16f α=,求cos2α的值.俯视图 侧视图正视图16.(本题满分13分)甲、乙两名同学参加“汉字听写大赛”选拔测试,在相同测试条件下,两人5次测试的成绩(单位:分)如下表:(Ⅰ)请画出甲、乙两人成绩的茎叶图. 你认为选派谁参赛更好?说明理由(不用计算); (Ⅱ)若从甲、乙两人5次的成绩中各随机抽取一个成绩进行分析,设抽到的两个成绩中,90分以上的个数为X ,求随机变量X 的分布列和期望EX .17.(本题满分14分)如图,在三棱锥P -ABC 中,PA ⊥平面ABC ,AB AC ⊥. (Ⅰ)求证:AC ⊥PB ;(Ⅱ)设,O D 分别为,AC AP 的中点,点G 为△OAB 内一点,且满足13OG OA OB =+(), 求证:DG ∥面PBC ;(Ⅲ)若==2AB AC ,=4PA , 求二面角A PB C --的余弦值.18.(本题满分13分)已知函数()()ln f x x a x =-,a ∈R . (Ⅰ)当0a =时,求函数()f x 的极小值;(Ⅱ)若函数()f x 在(0,)+∞上为增函数,求a 的取值范围.PDOACG19.已知椭圆C 两焦点坐标分别为1(F ,2F ,且经过点1)2P . (Ⅰ)求椭圆C 的标准方程;(Ⅱ)已知点(0,1)A -,直线l 与椭圆C 交于两点,M N .若△AMN 是以A 为直角顶点的等腰直角三角形,试求直线l 的方程.20.(本题满分13分)已知,,a b c 是正数, 1lg a a =,2lg a b =,3lg a c =. (Ⅰ)若,,a b c 成等差数列,比较12a a -与23a a -的大小;(Ⅱ)若122331a a a a a a ->->-,则,,a b c 三个数中,哪个数最大,请说明理由;(Ⅲ)若a t =,2b t =,3c t =(t *∈N ),且1a ,2a ,3a 的整数部分分别是,m 21,m +221,m +求所有t 的值.北京市朝阳区2013-2014学年度高三年级第一学期期末统一考试数学答案(理工类) 2014.1三、解答题15.解:(Ⅰ)因为2()cos sin 1f x x x =--+ 2sin sin x x =- 211(sin )24x =--, 又[]sin 1,1x ∈-,所以当1sin 2x =时,函数)(x f 的最小值为14-.…… 6分(Ⅱ)由(Ⅰ)得2115(sin )2416α--=,所以219(sin )216α-=.于是5sin 4α=(舍)或1sin 4α=-.又2217cos 212sin 12()48αα=-=--=. ……………… 13分16.解:(Ⅰ)茎叶图如右图所示,由图可知,乙的平均成绩大于甲的平均成绩,且乙的方差小于甲的方差,因此应选派乙参赛更好. ……………… 6分 (Ⅱ)随机变量X 的所有可能取值为0,1,2.1144115516(0)25C C P X C C ===, 14115528(1)25C P X C C ===, 115511(2)25P X C C ===, 随机变量X 的分布列是:160122525255EX =⨯+⨯+⨯=. ……………… 13分17.证明:(Ⅰ)因为PA ⊥平面ABC ,AC ⊂平面ABC ,所以PA AC ⊥.又因为AB AC ⊥,且PA AB=A ,所以AC ⊥平面PAB . 又因为PB ⊂平面PAB ,所以AC ⊥PB . ……………… 4分(Ⅱ)解法1:因为PA ⊥平面ABC ,所以PA AB ⊥,PA AC ⊥.又因为AB AC ⊥,8 7 5 6 9826 甲 乙5 57 2 58 5所以建立如图所示的空间直角坐标系A xyz -. 设=2AC a ,=AB b ,=2PA c , 则(0,0,0)A ,(0,,0)B b ,(2,0,0)C a ,(0,0,2),(0,0,)P c D c ,(,0,0)O a .又因为13OG OA OB =+(), 所以(,,0)33a b G . 于是(,,)33a b DG c =-,(2,,0)BC a b =-,(0,,2)PB b c =-.设平面PBC 的一个法向量000(,,)x y z =n ,则有0,0BC PB ⎧⋅=⎪⎨⋅=⎪⎩n n .即000020,20.ax by by cz -=⎧⎨-=⎩不妨设01z =,则有002,c c y x b a ==,所以2(,,1)c ca b=n . 因为22(,,1)(,,)1()03333c c a b c a c bDG c c a b a b ⋅=⋅-=⋅+⋅+⋅-=n ,所以DG ⊥n .又因为DG ⊄平面PBC ,所以DG ∥平面PBC . ……………… 9分解法2:取AB 中点E ,连OE ,则1()2OE OA OB =+. 由已知13OG OA OB =+()可得23OG OE =, 则点G 在OE 上.连结AG 并延长交CB 于F ,连PF .因为,O E 分别为,AC AB 的中点, 所以OE ∥BC ,即G 为AF 的中点. 又因为D 为线段PA 的中点, 所以DG ∥PF .又DG ⊄平面PBC ,PF ⊂平面PBC , 所以DG ∥平面PBC .……………… 9分CPDOAGEF(Ⅲ)由(Ⅱ)可知平面PBC 的一个法向量2(,,1)(2,2,1)c ca b==n . 又因为AC ⊥面PAB ,所以面PAB 的一个法向量是(2,0,0)AC =. 又42cos ,323AC AC AC⋅===⨯⋅n n n , 由图可知,二面角A PB C --为锐角,所以二面角A PB C --的余弦值为23. ……………… 14分 18. 解:(Ⅰ)定义域(0,)+∞.当0a =时,()ln f x x x =,()ln 1f x x '=+. 令()0f x '=,得1ex =. 当1(0,)ex ∈时,()0f x '<,()f x 为减函数; 当1(,)ex ∈+∞时,()0f x '>,()f x 为增函数.所以函数()f x 的极小值是11()e e f =-. ……………… 5分(Ⅱ)由已知得()ln x af x x x-'=+.因为函数()f x 在(0,)+∞是增函数,所以()0f x '≥,对(0,)x ∈+∞恒成立. 由()0f x '≥得ln 0x ax x-+≥,即ln x x x a +≥对(0,)x ∈+∞恒成立. 设()ln g x x x x =+,要使“ln x x x a +≥对(0,)x ∈+∞恒成立”,只要min ()a g x ≤. 因为()ln 2g x x '=+,令()0g x '=得21ex =. 当21(0,)ex ∈时,()0g x '<,()g x 为减函数; 当21(,)ex ∈+∞时,()0g x '>,()g x 为增函数. 所以()g x 在()0,+∞上的最小值是2211()e eg =-.故函数()f x 在(0,)+∞是增函数时,实数a 的取值范围是21(,]e -∞-…… 13分 19.解:(Ⅰ)设椭圆标准方程为22221(0)x y a b a b+=>>.依题意1224a PF PF =+==,所以2a =.又c =2221b a c =-=.于是椭圆C 的标准方程为2214x y +=. ……………… 5分 (Ⅱ)依题意,显然直线l 斜率存在.设直线l 的方程为y kx m =+,则由2214x y y kx m ⎧+=⎪⎨⎪=+⎩得222(41)8440k x kmx m +++-=. 因为2222644(41)(44)0k m k m ∆=-+->,得22410k m -+>. ……………… ①设1122(,),(,)M x y N x y ,线段MN 中点为00(,)Q x y ,则12221228414441km x x k m x x k ⎧+=-⎪⎪+⎨-⎪=⎪+⎩于是000224,4141km mx y kx m k k =-=+=++. 因为AM AN =,线段MN 中点为Q ,所以AQ MN ⊥. (1)当00x ≠,即0k ≠且0m ≠时,0011y k x +=-,整理得2341m k =+. ………………② 因为AM AN ⊥,1122(,1),(,1)AM x y AN x y =+=+,所以2212121212(1)(1)(1)(1)()21AM AN x x y y k x x k m x x m m =+++=+++++++22222448(1)(1)()2104141m kmk k m m m k k -=+++-+++=++,整理得25230m m +-=,解得35m =或1m =-. 当1m =-时,由②不合题意舍去. 由①②知,35m =时,k =.(2)当00x =时,(ⅰ)若0k =时,直线l 的方程为y m =,代入椭圆方程中得x =±.设()M m -,)N m ,依题意,若△AMN 为等腰直角三角形,则AQ QN =.即1m =+,解得1m =-或35m =.1m =-不合题意舍去, 即此时直线l 的方程为35y =. (ⅱ)若0k ≠且0m =时,即直线l 过原点.依椭圆的对称性有(0,0)Q ,则依题意不能有AQ MN ⊥,即此时不满足△AMN 为等腰直角三角形.综上,直线l 的方程为35y =530y -+=530y +-=. ………………14分 20.解:(Ⅰ)由已知得1223()()a a a a ---=2lg lg lg a b acb c b-=.因为,,a b c 成等差数列,所以2a cb +=,则1223()()a a a a ---=24lg()aca c +, 因为222a c ac +≥,所以2()4a c ac +≥,即241()aca c ≤+, 则1223()()0a a a a ---≤,即12a a -≤23a a -,当且仅当abc ==时等号成立.……………… 4分(Ⅱ)解法1:令12m a a =-,23n a a =-,31p a a =-,依题意,m n p >>且0m n p ++=,所以0m p >>. 故120a a ->,即lg lg a b >;且130a a ->,即lg lg a c >. 所以a b >且a c >. 故,,a b c 三个数中,a 最大. 解法2:依题意lglg lg a b c b c a >>,即a b c b c a>>. 因为0,0,0a b c >>>,所以2ac b >,2a bc >,2ab c >. 于是,3abc b >,3a abc >,3abc c >, 所以33a b >,33a c >.因为3y x =在R 上为增函数,所以a b >且a c >.故,,a b c 三个数中,a 最大. ……………… 8分(Ⅲ)依题意,lg t ,2lg t ,3lg t 的整数部分分别是,m 21,m +221m +,则l g 1m t m ≤<+, 所以22lg 22m t m ≤<+.又2lg 2lg t t =,则2lg t 的整数部分是2m 或21m +.当212m m +=时,1m =;当2121m m +=+时,0,2m =.(1) 当0m =时,lg t ,2lg t ,3lg t 的整数部分分别是0,1,1,所以0lg 1t ≤<,21lg 2t ≤<,31lg 2t ≤<.所以12lg 23t ≤<,解得21321010t ≤<. 又因为()12103,4∈,()23104,5∈,所以此时4t =.(2)当1m =时,同理可得1lg 2t ≤<,22lg 3t ≤<,33lg 4t ≤<. 所以41lg 3t ≤<,解得431010t ≤<.又()431021,22∈,此时10,11,12,...20,21t =. (3)当2m =时,同理可得2lg 3t ≤<,25lg 6t ≤<,39lg 10t ≤<,同时满足条件的t 不存在.综上所述4,10,11,12,...20,21t =. ……………… 13分。
北京市朝阳区2014届高三上学期期末考试物理试题(WORD精校版)
北京市朝阳区2013~2014学年度高三年级第一学期期末统一考试物理学科试卷2014.1(考试时间90分钟满分100分)一、本题共13小题,每小题3分,共39分。
在每小题给出的四个选项中,只有一个选项是符合题目要求的。
把答案用2B铅笔填涂在答题卡上。
1.下列物理量属于矢量的是A.磁感应强度B.电势差C.电动势D.电流2.把长0.10m的直导线放入匀强磁场中,保持导线和磁场方向垂直。
已知磁场的磁感应强度B的大小为5.0×10-3T,当导线中通过的电流为3.0A时,该直导线受到安培力的大小是A.3.0×10-3N B.2.5×10-3N C.2.0×10-3N D.1.5×10-3N3.关于简谐横波的图像,下列说法中正确的是A.坐标原点一定是波源的位置B.横坐标x表示各个质点距波源的距离C.图像中的波形曲线表示质点的运动轨迹D.纵坐标y表示某一时刻各个质点偏离平衡位置的位移4.如图所示,一轻弹簧上端固定在天花板上,下端挂一个重为300N的钩码,静止时弹簧伸长了3cm。
现将钩码竖直向下拉2cm,然后无初速度释放,使钩码沿竖直方向振动,则钩码所受的最大回复力F及其振动的振幅A分别为A.F=200N,A=2cm B.F=200N,A=3cmC.F=300N,A=3cm D.F=500N,A=5cm5.一列简谐横波沿x轴传播,图甲是x=0处质点的振动图像,图乙是该波t=0.15s时的波形图。
则A.该波的周期是2s B.该波的波长是0.2mC.该波沿x轴负方向传播D.该波的波速是10m/s6.如图所示为等量异号点电荷周围电场线的分布图,图中M点是两点电荷连线的中点,N点和M 点到正电荷的距离相等。
若M、N两点电场强度的大小分别为E M和E N,电势分别为φM和φN,则A.E M >E N,φM >φN B.E M >E N,φM <φNC.E M =E N,φM >φN D.E M =E N,φM <φN7.如图所示,一金属圆环水平固定放置,现将一竖直的条形磁铁,在圆环上方沿圆环轴线无初速度释放,在条形磁铁穿过圆环的过程中,条形磁铁与圆环A.始终相互吸引B.始终相互排斥C.先相互吸引,后相互排斥D.先相互排斥,后相互吸引8.图中a、b、c为三根与纸面垂直的长直导线,其横截面位于等边三角形的三个顶点上,导线中通有大小相同的电流,方向如图所示。
2014.1朝阳高三期末英语试题
北京市朝阳区2013—2014学年度高三年级第一学期期末统一考试英语学科试卷第二部分:知识运用(共两节, 45分)第一节单项填空(共15小题;每小题1分, 共15分)21. Those _____ have six or more close friends are described as “very happy”.A. whoB. whoseC. whichD. when22. She didn’t know _____ she could express her ideas clearly when she was invited to speak at the meeting.A. howB. whereC. whyD. what23. —Your e-mail address again? I _____ quite catch it.—It’s tracy@.A. don’tB. didn’tC. won’tD. wouldn’t24. You know, I _____ for a job for three months, but I haven’t had any luck.A. have been lookingB. have lookedC. had been lookingD. had looked25. They regard it as their duty _____ the best service to the customers.A. providedB. providingC. provideD. to provide26. _____ how to deal with the trouble with the car, Lily had to ask her friend for help.A. Not knowB. Not knownC. Not knowingD. Not to know27. Since there are five managers giving reports, the meeting _____ for at least two hours.A. lastsB. lastedC. will lastD. would last28. Many things _____ impossible in the past have already come true today.A. consideringB. to considerC. being consideredD. considered29. —The football match was amazing!—Really? How I wish I _____ to the stadium with you yesterday!A. wentB. had goneC. could goD. would go30. What Alex really means is _____ he disagrees with us.A. howB. whyC. whatD. that31. —Why did you buy two pairs of shoes?—It was so hard to choose which was the better, so I took them _____.A. allB. bothC. eitherD. each32. All the preparations for the task _____, and we’re ready to start.A. have completedB. have been completedC. had completedD. had been completed33. —Are there still any English dictionaries in the school library?—I hear there _____ be a few copies left.A. mayB. mustC. canD. should34. _____ you are all back, we’d better start our class right away.A. Even thoughB. If onlyC. Now thatD. In case35. The weather at this time is really too warm _____ January in Beijing.A. inB. onC. duringD. for第二节完形填空(共20小题;每小题1.5分,共30分)More Than One Way to the SquareWe were standing at the top of a church tower. My father had __36__ me to this spot in a small town not far from our home. I wondered __37__.“Look down, Elsa,” Father said. I gathered all my __38__ and looked down. I saw the square in the centre of the village. And I saw the crisscross (十字形) of twisting, turning streets leading to the __39__.“See, my dear,” Father said gently. “There is more than one way to the square. Life is like that. If you can’t get to the place where you want to go __40__ one road, try another.”Now I understood why I was there. Earlier that day I had __41__ my mother to do something about the awful school lunches. But she __42__ because she could not believe the lunches were as __43__ as I said.When I turned to Father, he would not help. Instead, he brought me to this high tower to give me a __44__—the value of an open, searching mind. By the time we reached home, I had a __45__.At school the next day, I __46__ poured my lunch soup into a bottle and brought it home. Then I talked the cook into serving it to Mother at dinner. Everything went on smoothly. She swallowed one __47__ and spat it out. Quickly I told her what I had done, and Mother stated __48__ that she would take up the matter of lunches at school the next day!In the years that followed I often remembered what Father taught me. I began to work as a fashion (时装) designer two years ago. I was busy getting ready to show my winter fashions. But just 13 days before the presentation the sewing girls all stopped working. I was as __49__ as my models. “We’ll never make it,” one of them cried.Accept the failure? __50__ use wisdom to find another road to my goal? Then a great idea flashed through my mind—why not __51__ the clothes unfinished?And, exactly 13 days later, our showing turned out to be so __52__ that it was a great success. Our different showing caught the __53__ of the public, and orders for the clothes __54__ in.Father’s wise words had __55__ me once again, “There is always more than one way to the square.”36. A. sent B. brought C. directed D. welcomed37. A. who B. how C. what D. why38. A. thoughts B. strength C. courage D. spirits39. A. square B. tower C. town D. village40. A. in B. on C. by D. across41. A. persuaded B. begged C. encouraged D. ordered42. A. failed B. agreed C. promised D. refused43. A. bad B. expensive C. delicious D. hot44. A. lesson B. chance C. shock D. ride45. A. goal B. result C. plan D. choice46. A. skillfully B. actively C. carelessly D. secretly47. A. cupful B. spoonful C. handful D. bagful48. A. thoughtfully B. simply C. firmly D. repeatedly49. A. positve B. cheerful C. calm D. hopeless50. A. Or B. And C. But D. So51. A. show B. buy C. change D. sell52. A. famous B. poor C. unusual D. ordinary53. A. notice B. attention C. desire D. impression54. A. turned B. handed C. stepped D. poured55. A. suggested B. guided C. corrected D. defeated第三部分:阅读理解(共两节,40分)第一节(共15小题;每小题2分,共30分)AWikipedia: The Online Know-It-AllIf you want to find out a piece of information about anything, the best place to search for it is Wikipedia. The name “Wikipedia” is from the Hawaiian word wiki, meaning “quick”. This online encyclopedia (百科全书) is written by thousands of people around the world. Anyone with Internet access can write, add or make changes to Wikipedia articles if he or she finds it incorrect or not well written. In this way, people who know a lot about a certain subject can write about it even if they are not university professors. But contributions cannot damage Wikipedia because many experienced editors are watching pages and techies (技术专家) can write editing programs to keep track of or correct bad edits. Where there are disagreements on how to present facts, editors work together to arrive at an article that fairly represents current expert opinion on the subject.Wikipedia is quite different from paper-based reference sources in important ways. Unlike printed encyclopedias, it is continually created and updated, with articles on historic events appearing within minutes, rather than months or years.What’s more, Wikipedia includes articles written in about 285 languages. This fact makes it one of t he few websites on the Internet that are truly international. It was started in 2001 by Larry Sanger and Jimmy Wales, as a free online English-language encyclopedia project. Since its creation, it has grown rapidly into one of the largest reference websites, attracting nearly 500 million unique visitors monthly. There are more than 77,000 active contributors working on more than 22,000,000 articles in different languages. As of today, there are 4,396,866 articles in English.So, if you are looking for some information, why not try Wikipedia? It’s free, multilingual,and informative.56. According to the passage, what is Wikipedia?A. A free website encyclopedia.B. A computer game.C. A free encyclopedia in book form.D. An online university.57. From the passage we know that ______.A. Wikipedia catches a wide audienceB. Wikipedia only charges users a small feeC. incorrect editions might do great harm to WikipediaD. it will take long to update the information on Wikipedia58. Where can we probably read the passage?A. In a story book.B. In a research report.C. In a science magazine.D. In a travel brochure.BSixteen-year-old Karlos Dearman’s future is looking much brighter than he might previously have imagined. “I love bikes, but I’ve never thought I’d end up with working with them,” he says. “This program has changed my life.”Karlos is learning to refurbish (翻新) old bicycles in the workshop (车间) of ReCycle Bikes, an independent non-profit bike project in Sheffield. It provides training chances for young people aged 14 to 16 with the help of the local government, particularly those struggling in mainstream education or rejected from school.“It’s about engaging young people with education and youth training by teaching them work and life skills,” explains Des Pearce, workshop training manager. “These young people have so much potential, but often don’t realize it.”Founded in 2001, ReCycle Bikes repairs bicycles donated by the public, which are sold for £20 after refurbished. Abandoned bikes supplied by the government make sure a steady flow of bikes, but a recently formed partnership with Sheffield University should improve the further development.“The student population presents a large and ready market,” says Pearce. “So we approached the university last year and offered to host bike sales on the campus (校园) . They thought it was a great idea, and agreed to provide us with more support. This means we can train young people to repair extra 500 bikes ove r three years.”Having set up ReCycle Bikes on his own, Pearce now has the staff and resources to track the profession development of those who have passed through his workshop. “But we are planning exit interviews with the young people to make sure what they plan to do, and these will allow us to check on their progre ss,” s ays Pearce.That most of the teenagers enjoy the work is, according to Pearce, easily explained. “Most kids have ridden a bike and know how to oil a chain or mend a flat tyre. As low-cost transport, cycling gives the young and old a sense of freedom and independence, and the effect on their well-being is big. Add to that a growing concern for the environment, and it’s no surprise that bike sales are on the increase.”59. From the passage, we know ReCycle Bikes ______.A. is a popular brand of bikesB. provides training chances for young peopleC. is a training project offered by the governmentD. aims at making money by selling refurbished bicycles60. How did ReCycle Bikes run at the beginning?A. By working together with Sheffield University.B. By selling bicycles supplied by the government.C. By getting money from teenagers aged between 14 and 16.D. By repairing bicycles donated by the public and selling them.61. ReCycle Bikes has formed a partnership with Sheffield University because _____.A. students at Sheffield University can be their potential customersB. Sheffield University donates a lot of money to ReCycle BikesC. teenagers at ReCycle Bikes can study at Sheffield UniversityD. Sheffield University offers to host bike sales on the campus62. According to Pearce, why do most of the teenagers enjoy the work?A. They’d like to change their lives.B. They want to learn how to repair bikes.C. They don’t have e nough money to buy cars.D. They are familiar with bikes and interested in them.CMen are spending more and more time in the kitchen encouraged by celebrity (名人) chefs like Gordon Ramsay and Jamie Oliver, according to a report from Oxford University.The effect of the celebrity role models, who have given cooking a more manly picture, has combined with a more general drive towards sexual equality and men now spend more than twice the amount of time preparing meals than they did in 1961.According to the research by Prof. Jonatahn Gershuny, who runs the Centre for Time Research at Oxford, men now spend more than half an hour a day cooking, up from just 12 minutes a day in 1961.Prof. Gershuny said, “The man in the kitchen is part of a much wider social trend. There has been 40 years of sexual equality, but there is another 40 years probably to come.”Women, who a generation ago spent nearly two hours a day cooking, now spend just one hour and sevenminutes—a great fall, but they still spend far more time in the kitchen than men.Some experts have named these men in aprons as “Gastrosexuals (men using cooking skills to impress friends)”, who have been inspired to pick up a kitchen knife by the success of Ramsay, Oliver as well as other male celebrity chefs such as Hugh Fearnley-Whittingstall, Marco Pierre White and Keith Floyd.“I was married in 1974. When my father came to visit me a few weeks later, I was wearing an apron when I opened the door. He laughed,” said Prof. Gershuny. “That would never happen now.”Two-thirds of adults say that they come together to share at least three times a week, even if it is not necessarily around a kitchen or dining room table. Prof. Gershuny pointed out that the family meal was now rarely eaten by all of its members around a table—with many “family meals” in fact taken on the sofa in the sitting room, and shared by family members. “The family meal has changed a lot, and f ew of us eat—as I did when I was a child—at least two meals a day together as a family. But it has survived in a different format.”63. What is one reason behind the trend that men spend more time cooking than before?A. The improvement of cooks’ status.B. The influence of popular female chefs.C. The change of female’s view on cooking.D. The development of sexual equality campaign.64. What does the author think about the time men and women spend on cooking?A. Men spend more time cooking than women nowadays.B. Women spend much less time on cooking than before.C. It will take 40 years before men spend more time at the stove than women.D. There is a sharp decline in the time men spend on cooking compared with 1961.65. How did Prof. Gershuny see the family meal according to the passage?A. It has become a thing of the past.B. It is very different from what it used to be.C. It shouldn’t be advocated in modern times.D. It is beneficial to the stability of the family.66. Which is the best title for the passage?A. The Changes of Family MealsB. Equality between Men and WomenC. Cooking into a New Trend for MenD. Cooking—a Thing of the Past for WomenDTeaching is more than leadership. Some of the teacher’s time and effort is directed t oward instruction, some toward evaluation. But it is the teacher as a group leader who creates an effective organizational structure (结构) and good working environment so that instruction and evaluation activities can take place. A group that is totally disorganized, unclear about its goals, or constantly fighting among its members will not be a good learning group. The leadership pattern includes helping to form and maintain a positive learning environment so that instruction and evaluation activities can take place.On the first day of class, the teacher faces a room filled with individuals (个体). Perhaps a few closely united groups and friendships already exist. But there is no sense of group unity, no set of rules for conduct in the group, no feeling of belonging. If teachers are successful leaders, they will help students develop a system of relationships that encourages working together.Standards and rules must be set to keep order, make sure of justice and protect individual rights, but do not contradict school policy. What happens when one student hurts another’s individual rights? Without clear regulations agreeable to the students and teachers, the classroom can become chaotic. Students may break rules they did not know existed. If standards are set without participation from the class, students may spend a great deal of creative energy in destroying the class environment or finding ways to break rules.No matter how skillful the teacher is in uniting students and creating a positive atmosphere, the task is never complete. Regular maintenance is necessary. Conflicts arise. The needs of individual members change. A new kind of learning task requires a new organizational structure. Sometimes outside pressures such as holidays, upcoming tests or sport competitions, or family troubles cause stress in the classroom. One task for the teacher is to recreate a positive environment by helping students deal with conflict, change, and stress.67. The underlined word “maintain” in Para.1 probably means_______.A. conserveB. buildC. recreateD. evaluate68. According to the author, the teacher should _______.A. free students from outside pressuresB. set the standards and rules on his ownC. be responsible for a well-organized classD. focus more on instruction and evaluation69. From the passage we can learn that ______.A. rules cannot be changed once they’re formedB. outside pressures may not cause tension among studentsC. if the teacher well unites his students, he then will finish his taskD. if rules are not acceptable both to students and teachers, the classroom can be a mess70. What is the author’s main purpose of writi ng the passage?A. To provide information for teaching.B. To show the importance of teaching a class.C. To study the teacher’s behavior in the classroom.D. To compare the teacher’s behavior with the students’ in class.第二节(共5小题;每小题2分,共10分)根据短文内容,从短文后的七个选项中选出能填入空白处的最佳选项。
北京朝阳区高三上学期期末英语试题-推荐
北京市朝阳区2013—2014学年度高三年级第一学期期末统一考试英语学科试卷(考试时间120分钟满分150分)本试卷共12页,共150分。
考试时长120分钟。
考生务必将答案答在答题卡上,在试卷上作答无效。
考试结束后,将本试卷和答题卡一并交回。
第一部分:听力理解(共三节,30分)第一节(共5小题;每小题1.5分,共7.5分)听下面5段对话。
每段对话后有一道小题,从每题所给的A、B、C三个选项中选出最佳选项。
听完每段对话后,你将有10秒钟的时间回答有关小题和阅读下一小题。
每段对话你将听一遍。
例:What is the man going to read?A. A newspaper.B. A magazine.C. A book.答案是A。
1. Where is the man?A. At a repair shop.B. At the cleaner’s.C. At the post office.2. What is the woman trying to do?C. Find a parking center.A. Get some small change.B. Find a shoppingcenter.3. What is the man doing?B. Offering information.C. Making an invitation.A. Asking forpermission.4. How does the man feel about the news?A. Pleased.B. Uninterested.C. Doubtful.5. What are the speakers talking about?A. A vacation abroad.B. An excitingexperience. C. An imaginary situation.第二节(共10小题;每小题1.5分,共15分)听下面4段对话或独白。
北京朝阳区高三第一学期期末语文试题.doc
北京市朝阳区2013~2014学年度高三年级第一学期期末统一考试语文试卷2014.1(考试时间150分钟 满分150分)本试卷共6页。
答题纸共5页。
考生务必将答案答在机读卡和答题纸上,在试卷上作答无效。
考试结束后,请交回机读卡和答题纸。
第一部分(27分)一、本大题共5小题,每小题3分,共15分。
阅读下面三段文字,完成1~3题。
①这是古城里的一条小街,过去这里显然驻扎过守城的军队,有一排排的营房为证。
现在这里正在建筑仿古的街市和民居,已颇成气候了,秦砖汉瓦,雕梁..画栋..,虽没有皇家气象,却也称得上是美轮美奂....。
在最前面靠近巷口的地方,还立有一个牌坊,上书一副对联,“市井里巷尽染六朝烟水气,布衣将相共写千古大文章”。
此联内容很好,有巧夺天工....之妙。
但对得不甚工整,以我之见,不如将“大文章”改成“风情画”,尚可差强人意....。
②我上初中的时候,在杭州西湖看到过那副著名的对联,“青山有幸埋忠骨,白铁无辜铸佞臣”。
当时我心中引发了强烈的震动。
那时正看着《说岳全传》,热血沸腾着,一看这对联真是绝了,其,真可以说是独步天下。
③我还曾在广西看到过一副咏竹楹联,一目之后就永远忘不了,我以为那是最好的咏竹楹联。
内容是:“一寸在土已有节,”。
由于年代久远,我在什么地方看到的已想不起来了,但这副咏竹联却早已成了我的座右铭。
1.文段中加点成语使用不恰当...的一项是 A.已颇成气候了,秦砖汉瓦,雕梁画栋....B.却也称得上是美轮美奂....C.此联内容很好,有巧夺天工....之妙 D.不如将“大文章”改成“风情画”,尚可差强人意....2.第②段中空格处与上下文衔接最恰当的一项是A.回味之无穷,概括之全面,含义之深刻,对仗之工整B.概括之全面,含义之深刻,对仗之工整,回味之无穷C.回味之无穷,对仗之工整,含义之深刻,概括之全面D.概括之全面,含义之深刻,回味之无穷,对仗之工整3.第③段中的咏竹联最恰当的下联是A.万丈凌云无止心B.万丈凌云犹心虚C.万尺凌云仍虚心D.万尺凌云志永存4.下面文段中加点词语的注音和书写正确的一项是2013年12月,南非前总统曼德拉与世长辞....。
[最新推荐]北京朝阳区高三上学期期末英语试题
北京市朝阳区2013—2014学年度高三年级第一学期期末统一考试英语学科试卷(考试时间120分钟满分150分)本试卷共12页,共150分。
考试时长120分钟。
考生务必将答案答在答题卡上,在试卷上作答无效。
考试结束后,将本试卷和答题卡一并交回。
第一部分:听力理解(共三节,30分)第一节(共5小题;每小题1.5分,共7.5分)听下面5段对话。
每段对话后有一道小题,从每题所给的A、B、C三个选项中选出最佳选项。
听完每段对话后,你将有10秒钟的时间回答有关小题和阅读下一小题。
每段对话你将听一遍。
例:What is the man going to read?A. A newspaper.B. A magazine.C. A book.答案是A。
1. Where is the man?A. At a repair shop.B. At the cleaner’s.C. At the post office.2. What is the woman trying to do?A. Get some small change.B. Find a shoppingcenter.C. Find a parking center.3. What is the man doing?A. Asking for permission.B. Offering information.C. Making an invitation.4. How does the man feel about the news?A. Pleased.B. Uninterested.C. Doubtful.5. What are the speakers talking about?A. A vacation abroad.B. An excitingexperience. C. An imaginary situation.第二节(共10小题;每小题1.5分,共15分)听下面4段对话或独白。
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北京市朝阳区2013~2014学年度高三年级第一学期期末统一考试化学试卷2014.1(考试时间:90分钟总分:100分)可能用到的相对原子质量:H 1 C 12 N 14 O 16 Na 23 Cl 35.5 Cu 64Ag 108 I 127第一部分(选择题共42分)本部分共14小题,每小题3分,共42分。
在每小题列出的四个选项中,选出最符合题目要求的一项。
1.下列环境污染与其产生的原因不相关...的是2. 实验室保存下列试剂的方法不正确...的是A.钠保存在煤油中B.用棕色试剂瓶盛放新制的氯C.用带玻璃塞的试剂瓶盛放NaOH溶液D.向盛放氯化亚铁溶液的试剂瓶中加少量铁粉3. 右图是一个盐桥中充满饱和KCl溶液的锌铜原电池装置,下列分析正确的是A.Cu片上发生氧化反应B.电子由Cu片经外电路流向Zn片C.盐桥中的Cl―移向ZnSO4溶液D.一段时间后烧杯中c(Zn2+)、c(Cu2+)均减小4. 下列关于第IV A族元素的说法中,正确的是A.原子半径:14Si>32GeB.稳定性:CH4<SiH4C.酸性:H2CO3>H2SiO3D.碱性:32Ge(OH)4>50Sn(OH)4>82Pb(OH)45. 关于钢铁腐蚀与防护的说法不正确...的是 A .钢铁的吸氧腐蚀和析氢腐蚀的负极反应式均为:Fe -2e -== Fe 2+B .钢铁发生吸氧腐蚀时,正极反应式为:O 2+2H 2O +4e -== 4OH -C .地下钢管连接镁块是采用牺牲阳极的阴极保护法D .用外加电流的阴极保护法防止钢铁腐蚀时,钢铁接电源的正极6.向10 mL 含等浓度的I -和Cl -的溶液中逐滴加入0.1 mol·L -1的AgNO 3溶液,沉淀的质量与加入AgNO 3溶液体积的关系如右图所示。
下列说法不正确...的是 A .该实验可以证明AgI 比AgCl 更难溶 B .加入V 2 mL AgNO 3溶液后,溶液中不含I -C .V 1= V 2-V 1D .向最终的沉淀中加入Na 2S 溶液,沉淀变成黑色7. 右图是模拟工业电解饱和食盐水的装置图,下列叙述正确的是 A .a 为电源的正极B .通电一段时间后,石墨电极附近溶液先变红C .Fe 电极的电极反应是4OH ――4e -==2H 2O +O 2↑ D .电解饱和食盐水的总反应是: 2NaCl + 2H 2O ===2NaOH + H 2↑+ Cl 2↑8. 室温下,对于0.10 mol·L -1的氨水,下列判断正确的是 A .其溶液的pH=13B .加入少量NaOH ,溶液中c (NH 4+)减小,K w 减小C .与AlCl 3溶液反应的离子方程式为 Al 3++3OH ―=Al(OH)3↓D .滴加0.10 mol·L -1HNO 3溶液到pH=7,溶液中离子浓度关系为: c (NO 3―) = c (NH 4+)> c (H +)=c (OH ―)9. 下列说法正确的是A. 丙三醇不是乙醇的同系物B. 硫酸铵和醋酸铅溶液均可使鸡蛋清溶液中的蛋白质变性C. 麦芽糖与蔗糖的水解产物均含葡萄糖,故二者均为还原型二糖 D .天然植物油常温下一般呈液态,难溶于水,有恒定的熔点、沸点10.下列方法不能..用于鉴别Na 2CO 3和NaHCO 3固体的是 A . 分别加热两种固体,将放出的气体通入澄清石灰水B. 分别取两种固体溶于水,滴加Ba(OH)2溶液,观察是否生成沉淀C. 分别取两种固体各 1 g ,滴入几滴水振荡,用手触摸试管底部D. 分别取等质量的固体与足量稀盐酸充分反应,加热、蒸干、灼烧称重电解11. 某离子反应中涉及H 2O 、ClO —、NH 4+、H +、N 2、Cl —六种微粒。
其中N 2的物质的量随时间变化的曲线如右图所示。
下列判断正确的是 A .该反应的还原剂是Cl—B .消耗1 mol 还原剂,转移6 mol 电子C .氧化剂与还原剂的物质的量之比为2:3D .反应后溶液的酸性明显增强12.下列陈述Ⅰ、Ⅱ均正确且有因果关系的是13.下列事实、离子方程式及其对应关系均正确的是 A .铁溶于稀硝酸,溶液变为浅绿色:Fe + 4H + + NO 3—== Fe 3+ + NO ↑ + 2H 2OB .向K 2Cr 2O 7溶液中滴加少量浓H 2SO 4,溶液变为黄色: Cr 2O 72-(橙色) + H 2O2CrO 42-(黄色) +2H +C .向淀粉碘化钾溶液中滴加稀硫酸,在空气中放置一段时间后溶液变蓝:4H + + 4I - + O 2 ==2I 2 + 2H 2OD .向水杨酸()中滴加NaHCO 3溶液,放出无色气体: + 2HCO3-→ + 2CO 2↑ + 2H 2O14.下列实验中,为实现实验目的而必须除杂的是A.只有①②③B.只有①②④C.只有②③④D. ①②③④OHCOOH OHCOOH O -COO -第二部分(非选择题共58分)15. (11分)SO2是一种重要的化工原料,也是一种环境污染物。
(1)SO2可用于工业制Br2过程中吸收潮湿空气中的Br2,反应的离子方程式是。
(2)直接排放含SO2的烟气会形成酸雨,危害环境。
用化学方程式表示SO2形成硫酸型酸雨的反应:。
(3)工业上用Na2SO3溶液吸收烟气中的SO2。
将烟气通入1.0 mol•L-1的Na2SO3溶液,溶液pH不断减小。
当溶液pH约为6时,吸收SO2的能力显著下降,应更换吸收剂。
①此时溶液中c(SO32-)的浓度是0.2 mol•L-1,则溶液中c(HSO3-)是_________mol•L-1,由此说明NaHSO3溶液显性,用化学平衡原理解释:。
②向pH约为6的吸收剂中通入足量的O2,可将其中的NaHSO3转化为两种物质,反应的化学方程式是。
氨在国民经济中占有重要地位。
(1)工业合成氨时,合成塔中每产生1 mol NH 3,放出46.1 kJ 的热量。
① 工业合成氨的热化学方程式是 。
② 已知:N 2 (g) 2N (g) H 2 (g) 2H (g)则断开1 mol N -H 键所需的能量是_______kJ 。
(2)下表是当反应器中按n (N 2):n (H 2)=1:3投料后,在200℃、400℃、600℃下,反应达到平衡时,混合物中NH 3的物质的量分数随压强的变化曲线。
① 曲线a 对应的温度是 。
② 关于工业合成氨的反应,下列叙述正确的是 (填字母)。
A. 及时分离出NH 3可以提高H 2的平衡转化率 B. 加催化剂能加快反应速率且提高H 2的平衡转化率C. 上图中M 、N 、Q 点平衡常数K 的大小关系是K (M)= K (Q) >K (N) ③ M 点对应的H 2转化率是 。
(3)氨是一种潜在的清洁能源,可用作碱性燃料电池的燃料。
电池的总反应为:4NH 3(g) + 3O 2(g) == 2N 2(g) + 6H 2O(g)。
则该燃料电池的负极反应式是 。
压强/MPaNH 3的物质的量分数/%945.8 kJ ·mol -1436.0 kJ ·mol -1用含有Al2O3及少量Fe2O3和SiO2的铝土矿制备净水剂——液体聚合硫酸铝铁,工艺流程如下(部分操作和条件略):I.向铝土矿中加入过量H2SO4后,加热、搅拌、过滤。
II.向滤液中加入一定量的FeSO4·7H2O和双氧水。
III.向溶液中加入Ca(OH)2固体,调节溶液的pH约为1,过滤。
IV.加入稳定剂,加热,得到产品。
(1)Fe2O3与H2SO4反应的离子方程式是___________。
(2)步骤I中过滤得到的滤渣成分是________(填化学式)。
(3)步骤I 中H2SO4的浓度与反应温度会影响铁与铝的浸出率。
根据下图分析,步骤I 中H2SO4浓度的适宜范围是__________,反应的适宜温度是_________。
(4)步骤II中增大n(Fe3+)的离子方程式是_________。
(5)步骤III得到碱式硫酸铝铁[AlFe(OH)n(SO4)m]的溶液,则步骤II中应增大n(Fe3+)到n(Al3+)﹕n(Fe3+)= 。
(6)研究表明,液体聚合硫酸铝铁的纯度越高,净水效果越好。
已知:一些物质在20℃时的溶解度属Al的表面生成致密坚硬的氧化膜,其电极反应式是_________。
18.(12分)以A 为原料合成安眠药——苯巴比妥的路线如下:已知:(1)A 中官能团的名称是 。
(2)B →C 的化学方程式是 。
(3)写出一种与D 互为同分异构体,且苯环上只有一个取代基的酯的结构简式 。
(4)F 为酯,其结构简式是 。
(5)F →G 的反应类型是 。
(6)H 的结构简式是 。
(7)G 与CO(NH 2)2在一定条件下合成的高分子结构简式是 。
苯巴比妥DGi. CH 3COOH+SOCl 2 CH 3C -Cl + SO 2+HCl CH 3CH 2OHCO(OCH 2CH 3)2 —COOCH 2CH 3CH 3CH 2Br CO(NH 2)2 CH 2COOHSOCl 2 氧化 COOCH 2CH 3COOCH 3COOCH 3 ii. + CO(NH 2)2 C -NH C -NHC=O + 2CH 3OH (R 、R′为H 原子或烃基) O R R ′ C O O R R ′ C19. (11分)甲、乙两同学研究Na 2SO 3溶液与FeCl 3溶液反应的情况。
(1)常温下,FeCl 3溶液的pH_______7(填“<”、“>”或“=”)。
(2)分析红褐色产生的原因。
① 甲同学认为步骤I 中溶液呈红褐色是因为生成了Fe(OH)3,用化学平衡移动原理解释溶液呈红褐色的原因:________。
② 乙同学认为可能是发生了氧化还原反应,完成并配平其反应的离子方程式:Fe 3+SO 32- 2+ + + 乙同学查阅资料得知:(3)甲同学为了确认溶液呈红褐色的原因是生成了Fe(OH)3,设计并完成了如下实验: 甲同学因此得出结论:溶液呈红褐色是因为生成了Fe(OH)3。
而乙同学认为甲同学得出结论的证据仍然..不足,乙同学的理由是________。
(4)为进一步确认Na 2SO 3溶液与FeCl 3溶液反应的情况,乙同学设计并完成了如下实验: ① 经检验步骤III 中红褐色溶液含有Fe 2+,检验Fe 2+选用的试剂是_________(填字母)。
a .K 3[Fe(CN)6] 溶液 b .KSCN 溶液 c .KMnO 4溶液② 已知H 2SO 3是弱酸,请结合电离方程式说明步骤III 中出现红褐色的原因: 。
(5)结论:由上述实验得知,甲、乙两同学所持观点均正确。