河南省洛阳市八中2013-2014学年高二下学期第二次月考(数学文)
河南省洛阳八中1415学年度高二上学期10月月考——数学

河南省洛阳八中2014—2015学年度上学期10月月考高二数学文试题一、选择题:本大题共12小题,每小题4分,共48分。
1、在△ABC 中,若sin A sin B <cos A cos B ,则△ABC 是( )A.钝角三角形B.锐角三角形C.直角三角形D.形状无法确定2、已知△ABC 中,AB =6,∠A =30°,∠B =120°,则△ABC 的面积( )A .9B .18C .9D .183、在△ABC 中,若三个内角A ,B ,C 满足C C B B A 222sin sin sin 3sin sin ++=,则角A 等于( )A. B. C. D.4、在△ABC 中,316,38,8===∆ABC S c b ,则等于( )A. B. C.或 D.或5、等差数列{a n }中,S 10=120,那么a 1+a 10的值是( ) A.12 B.24 C.36 D.486、在等比数列{a n }中,已知,,则( )A.1B.3C.±1D.±37、若是等比数列,124,5128374=+-=a a a a 且公比为整数,则等于( )A 、-256B 、256C 、-512D 、5128、如图所示,从气球A 上测得正前方的河流的两岸B ,C 的俯角分别为75°,30°,此时气球的高度是60 m ,则河流的宽度BC 等于( )A .240(3-1)mB .180(2-1)mC .120(3-1)mD .30(3+1)m9、若是等差数列前n 项和,若=,则=A . B. C. D.10、在中,,三边长a ,b ,c 成等差数列,且,则b 的值是A .B .C . D.11、在数列中,*1+12,2=2+1,,n n a a a n N =∈则的值为A. 49B. 52C. 51D.5012、已知方程(x 2-2x +m )(x 2-2x +n )=0的四个根组成一个首项为的等差数列,等于A.1B.C.D.二.填空题:本大题共4小题,每题4分,共16分。
河南省洛阳八中高二化学下学期第二次月考试卷(含解析)-人教版高二全册化学试题

2013-2014学年河南省洛阳八中高二(下)第二次月考化学试卷一、单项选择题(本题共10小题,每小题2分,共20分.每小题只有一个正确选项)1.(2分)(2014春•洛龙区校级月考)多电子原子中,3s、3d、4p轨道能级次序为()A.3s<3d<4p B.3s>3d>4p C.3s<4p<3d D.无法确定2.(2分)(2014春•洛龙区校级月考)在d轨道中电子排布成,而不排成,最直接的根据是()A.能量最低原理B.泡利原理C.构造原理示意图D.洪特规则3.(2分)(2014春•洛龙区校级月考)下列分子或离子中,含有孤电子对最多的是()A.H2O B.BeCl2C.SiH4D.NH4+4.(2分)(2012春•武汉校级期末)下列说法中正确的是()A.乙烯中C=C的键能是乙烷中C﹣C的键能的2倍B.氮气分子中含有1个σ键和2个π键C.N﹣O键的极性比C﹣O键的极性大D.NH4+中4个N﹣H键的键能不相同5.(2分)(2011春•望江县期中)主族元素原子失去最外层电子形成阳离子,主族元素的原子得到电子填充在最外层形成阴离子.下列各原子或离子的电子排布式错误的是()A.Ca2+:1s22s22p63s23p6B.Ar:1s22s22p63s23p6C.Cl﹣:1s22s22p63s23p6D.O2﹣:1s22s22p46.(2分)(2011春•兖州市期中)元素X的基态原子最外层电子排布为ns n﹣1np n+2,则X元素的原子序数为()A.9 B.10 C.17 D.187.(2分)(2014春•洛龙区校级月考)对H3O+的说法正确的是()A.氧原子采取sp2杂化B.离子是正四面体形C.离子中存在配位键D.离子中存在非极性键8.(2分)(2014春•洛龙区校级月考)下列哪种物质本身所具有的能量最低()A.HI B.HBr C.HCl D.HF9.(2分)(2014春•洛龙区校级月考)铵根离子中存在的化学键类型按离子键、共价键和配位键分类,应含有()A.离子键和共价键B.离子键和配位键C.配位键和共价键D.离子键10.(2分)(2014春•洛龙区校级月考)下列变化中,不需要破坏化学键的是()A.干冰气化B.氯化氢溶于水C.水通电分解成氢气和氧气D.加热使氯化钠熔化二、单项选择题(本题共10小题,每小题3分,共30分.每小题只有一个正确选项)11.(3分)(2014春•洛龙区校级月考)下列说法不正确的是()A.N、O间形成的共价键是极性键B.SiH4的沸点高于CH4,可推测PH3的沸点高于NH3C.NH4+为正四面体,可推测出PH4+也为正四面体结构D.固体分子中一定存在分子间作用力,不一定存在化学键12.(3分)(2014春•新疆校级期末)下列各元素,最易形成离子化合物的是()①第三周期第一电离能最小的元素②外围电子构型为2s22p6的原子③2p轨道为半满的元素④电负性最大的元素.A.①②B.③④C.②③D.①④13.(3分)(2014春•洛龙区校级月考)下列各组物质中,酸性由强到弱排列顺序错误的是()A.HClO4H2SO4H3PO4B.HClO4HClO3HClO2C.HClO HBrO4HIO4D.H2SO4H2SO3H2CO314.(3分)(2011秋•巴中期末)当一个碳原子所连四个原子或原子团不同时,该碳原子叫“手性碳原子”.下列化合物中含有2个手性碳原子的是()A.B.C.D.15.(3分)(2013春•历下区校级期中)DNA分子的两条链之间通过氢键结合.DNA分子复制前首先将双链解开,则DNA分子复制将双链解开的过程可视为()A.化学变化B.物理变化C.既有物理变化又有化学变化D.是一种特殊的生物变化16.(3分)(2013秋•启东市校级期中)科学家发现铂的两种化合物a和b,实验测得a和b 具有不同的特性.a具有抗癌作用,而b没有,则下列关于a、b的叙述正确的是()A.a和b属于同一种物质B.a和b互为同分异构体C.a和b属于手性异构体D.a和b的空间构型是四面体17.(3分)(2014春•洛龙区校级月考)下列关于砷(As)元素的叙述中,正确的是()A.在AsCl3分子中,砷原子最外层电子数为8B.Na3AsO4溶液的pH等于7C.砷的氢化物的化学式为AsH3,其还原性比NH3的弱D.第一电离能:As<Se18.(3分)(2014春•洛龙区校级月考)如图为元素周期表的一部分.X 、Y 、Z 、W 均为短周期元素,若W 原子的最外层电子数是其次外层电子数的.则下列说法中正确的是( ) X Y ZWA . Y 单质可与Z 的氢化物的水溶液反应,使溶液pH 升高B . 含氧酸的酸性:W >ZC . 原子半径由大到小的排列顺序是Z >Y >XD . X 的单质中有一种为白色蜡状固体19.(3分)(2014春•涪陵区校级期末)下列有关物质性质、结构的表述均正确,且存在因果关系的是( ) 表述Ⅰ表述ⅡA在水中,NaCl 的溶解度比I 2的溶解度大NaCl 晶体中Cl ﹣与Na +间的作用力大于碘晶体中分子间的作用力B 通常条件下,CH 4分子比SnH 4分子稳定性大Sn 的原子半径比C 的大,Sn 与H 之间的键能比C 与H 间的键能小C 在形成化合物时,同一主族元素的化合价相同同一主族元素原子的最外层电子数相同 D P 4O 10、C 6H 12O 6溶于水后均不导电 P 4O 10、C 6H 12O 6均属于共价化合物A . AB . BC . CD . D20.(3分)(2012春•武汉校级期末)某物质的实验式为PtCl 4•2NH 3,其水溶液不导电,加入AgNO 3溶液反应也不产生沉淀,以强碱处理并没有NH 3放出,则关于此化合物的说法中正确的是( )A . 配合物中中心原子的电荷数和配位数均为6B . 该配合物可能是平面正方形结构C. Cl﹣和NH3分子均与Pt4+配位D.配合物中Cl﹣与Pt4+配位,而NH3分子不配位二、非选择题21.(6分)(2014春•洛龙区校级月考)(1)元素的第一电离能:Al C(填“>”或“<”).(2)元素的电负性N O(填“>”或“<”).(3)基态Mn2+的核外电子排布式为.(4)硅烷(Si n H2n+2)的沸点与其相对分子质量的变化关系如图所示,呈现这种变化关系的原因是.22.(12分)(2014春•洛龙区校级月考)金属镍在电池、合金、催化剂等方面应用广泛.(1)金属Ni2+电子排布式是.(2)Ni是元素周期表中第28号元素,第2周期基态原子未成对电子数与Ni相同且电负性最小的元素是.(3)过渡金属配合物Ni(CO)n的中心原子价电子数与配体提供电子总数之和为18,则n= .CO与N2结构相似,CO分子内σ键与π键个数之比为.(4)甲醛(H2C=O)在Ni催化作用下加氢可得甲醇(CH3OH).甲醇分子内C原子的杂化方式为,甲醇分子内的O﹣C﹣H键角(填“大于”“等于”或“小于”)甲醛分子内的O﹣C﹣H键角.23.(10分)(2014春•洛龙区校级月考)如图为周期表的一部分,其中的编号代表对应的元素.请回答下列问题:(1)表中属于d区的元素是(填编号).(2)写出元素⑨的基态原子的电子排布式.(3)某元素的特征电子排布式为ns n np n+1,该元素原子的核外最外层电子的成对电子为对.(4)②和③相比,第一电离能较大的是,⑥和⑦相比,电负性较大的是(均填元素符号).24.(12分)(2014春•鼓楼区校级月考)W、X、Y、Z是周期表前36号元素中的四种常见元素,其原子序数依次增大.W、Y的氧化物是导致酸雨的主要物质,X的基态原子核外有7个原子轨道填充了电子,Z能形成红色(或砖红色)的Z2O和黑色的ZO两种氧化物.(1)W位于元素周期表第周期第族.W的气态氢化物稳定性比H2O(g)(填“强”或“弱”).(2)Y的基态原子核外电子排布式是,X的价电子轨道排布式为.(3)Y的最高价氧化物对应水化物的浓溶液与Z的单质反应的化学方程式是.25.(10分)(2013•四川)X、Y、Z、R为前四周期元素且原子序数依次增大.X的单质与氢气可化合生成气体G,其水溶液pH>7;Y的单质是一种黄色晶体;R基态原子3d轨道的电子数是4s轨道电子数的3倍.Y、Z分别与钠元素可形成化合物Q和J,J的水溶液与AgNO3溶液反应可生成不溶于稀硝酸的白色沉淀L;Z与氢元素形成的化合物与G反应生成M.请回答下列问题:(1)M固体的晶体类型是.(2)Y基态原子的核外电子排布式是;G分子中X原子的杂化轨道类型是.(3)L的悬浊液中加入Q的溶液,白色沉淀转化为黑色沉淀,其原因是.(4)R的一种含氧酸根RO42﹣具有强氧化性,在其钠盐溶液中加入稀硫酸,溶液变为黄色,并有无色气体产生,该反应的离子方程式是.2013-2014学年河南省洛阳八中高二(下)第二次月考化学试卷参考答案与试题解析一、单项选择题(本题共10小题,每小题2分,共20分.每小题只有一个正确选项)1.(2分)(2014春•洛龙区校级月考)多电子原子中,3s、3d、4p轨道能级次序为()A.3s<3d<4p B.3s>3d>4p C.3s<4p<3d D.无法确定考点:原子核外电子的能级分布.专题:原子组成与结构专题.分析:多电子原子中,轨道能级次序:1s、2s、2p、3s、3p、4s、3d、4p、5s、4d、5p、6s、4f…,排列电子时先排能量低的后排能量高的.解答:解:电子原子中,3s、3d、4p轨道能级次序为3s<3d<4p,故选A.点评:本题考查了原子结构的构造原理,明确轨道能级次序是解本题关键,难度不大.2.(2分)(2014春•洛龙区校级月考)在d轨道中电子排布成,而不排成,最直接的根据是()A.能量最低原理B.泡利原理C.构造原理示意图D.洪特规则考点:原子结构的构造原理.专题:原子组成与结构专题.分析:洪特规则是:当电子排布在同一能级的不同轨道时,基态原子中的电子总是优先单独占据一个轨道,且自旋状态相同,据此判断.解答:解:当电子排布在同一能级的不同轨道时,基态原子中的电子总是优先单独占据一个轨道,且自旋状态相同,称为洪特规则,根据图片知,4个电子占据不同的轨道且自旋方向相同,所以其根据是洪特规则,故选D.点评:本题考查了洪特规则的应用,根据定义来分析解答即可,难度不大.3.(2分)(2014春•洛龙区校级月考)下列分子或离子中,含有孤电子对最多的是()A.H2O B.BeCl2C.SiH4D.NH4+考点:化学键.专题:化学键与晶体结构.分析:分子中孤电子对个数=(中心原子价电子数﹣配原子个数×配原子形成稳定结构需要的电子数),阳离子中孤电子对个数=(中心原子价电子数﹣电荷数﹣配原子个数×配原子形成稳定结构需要的电子数),阴离子中孤电子对个数=(中心原子价电子数+电荷数﹣配原子个数×配原子形成稳定结构需要的电子数),据此分析解答.解答:解:A.H2O分子中孤电子对个数=(6﹣2×1)=2;B.BeCl2分子中孤电子对个数=(4﹣2×1)=1;C.SiH4中孤电子对个数=(4﹣4×1)=0;D.铵根离子中孤电子对个数=(5﹣1﹣4×1)=0;所以孤电子对个数最多的是H2O,故选A.点评:本题考查了化合物中孤电子对个数的计算方法,根据价层电子对互斥理论计算即可,注意其阴阳离子孤电子对个数的计算方法,为易错点,题目难度不大.4.(2分)(2012春•武汉校级期末)下列说法中正确的是()A.乙烯中C=C的键能是乙烷中C﹣C的键能的2倍B.氮气分子中含有1个σ键和2个π键C.N﹣O键的极性比C﹣O键的极性大D.NH4+中4个N﹣H键的键能不相同考点:共价键的形成及共价键的主要类型.专题:原子组成与结构专题.分析:A.乙烯分子中碳碳双键的键能小于乙烷中碳碳单键键能的2倍;B.共价三键中1个σ键和2个π键;C.二者非金属性差距越大极性越大;D.铵根离子中四个N﹣H键键能相同.解答:解:A.乙烯分子中碳碳双键的键能小于乙烷中碳碳单键键能的2倍,所以导致乙烯性质较活泼,故A错误;B.氮气分子中氮原子之间存在氮氮三键,共价三键中1个σ键和2个π键,故B 正确;C.二者非金属性差距越大极性越大,所以N﹣O键的极性比C﹣O键的极性小,故C 错误;D.铵根离子中四个N﹣H键键能相同,键长相等,键角相等,故D错误;故选B.点评:本题考查了化学键,根据杂化轨道理论、化学极性的判断方法进行分析解答即可,易错选项是C,注意化学键极性的判断方法.5.(2分)(2011春•望江县期中)主族元素原子失去最外层电子形成阳离子,主族元素的原子得到电子填充在最外层形成阴离子.下列各原子或离子的电子排布式错误的是()A.Ca2+:1s22s22p63s23p6B.Ar:1s22s22p63s23p6C.Cl﹣:1s22s22p63s23p6D.O2﹣:1s22s22p4考点:原子核外电子排布.专题:原子组成与结构专题.分析:主族元素原子失去电子变成阳离子时,核外电子数、电子层数、最外层电子数改变;主族元素原子得到电子变成阴离子时,核外电子数和最外层电子数改变,但电子层数不变.解答:解:A、钙原子失去2个电子变成钙离子,使次外层变成最外层,所以钙离子核外有18个电子,故A正确.B、氩是18号元素,原子核外有18个电子,故B正确.C、氯原子核外有17个电子,氯原子得一个电子变成氯离子,最外层由7个电子变成8个电子,所以氯离子核外有18个电子,故C正确.D、氧原子核外有8个电子,氧原子得2个电子变成氧离子,最外层电子数由6个变成8个,所以氧离子核外有10电子,故D错误.故选D.点评:本题考查了原子或离子的核外电子排布,难度不大,明确原子变成阴、阳离子时变化的量是解本题的关键.6.(2分)(2011春•兖州市期中)元素X的基态原子最外层电子排布为ns n﹣1np n+2,则X元素的原子序数为()A.9 B.10 C.17 D.18考点:原子核外电子排布.专题:原子组成与结构专题.分析:根据排布规律可知ns n﹣1应排满,为2个电子,故n=3,元素X的基态原子最外层电子排布为3s2np5.解答:解:ns n﹣1应排满,为2个电子,故n=3,元素X的基态原子最外层电子排布为3s2np5,为Cl元素,故选C.点评:本题考查原子结构与元素的性质,难度不大,注意根据构造原理,先排能量低的再排能量高的.7.(2分)(2014春•洛龙区校级月考)对H3O+的说法正确的是()A.氧原子采取sp2杂化B.离子是正四面体形C.离子中存在配位键D.离子中存在非极性键考点:配合物的成键情况;原子轨道杂化方式及杂化类型判断.专题:化学键与晶体结构.分析:根据价层电子对互斥理论确定其空间构型,价层电子对数=σ 键个数+(a﹣xb);H3O+离子中不存在非极性键,存在的都是H﹣O极性共价键;解答:解:H3O +中,价层电子对数=3+(6﹣1﹣3×1)=4,在H3O+中O原子成3个σ键,其中含有1个配位键,有一对未成键的孤对电子,杂化轨道数为4,采取sp3型杂化杂化,孤对电子对成键电子的排斥作用较强,H3O+空间构型是三角锥形,H3O+离子中不存在非极性键,存在的都是H﹣O极性共价键,故选:C.点评:本题考查了分子空间构型的判断,难度中等,注意理解价层电子对互斥理论与杂化轨道理论.8.(2分)(2014春•洛龙区校级月考)下列哪种物质本身所具有的能量最低()A.HI B.HBr C.HCl D.HF考点:反应热和焓变.专题:化学键与晶体结构.分析:同主族元素形成的氢化物结构相似,物质所含的能量最低,越稳定.解答:解:在氟化氢、氯化氢、溴化氢以及碘化氢中,氟化氢最稳定,物质所含的能量越低,所以氟化氢的能量最低.故选D.点评:本题考查物质的能量与稳定性的关系,题目难度不大,注意相关基础知识的积累.9.(2分)(2014春•洛龙区校级月考)铵根离子中存在的化学键类型按离子键、共价键和配位键分类,应含有()A.离子键和共价键B.离子键和配位键C.配位键和共价键D.离子键考点:共价键的形成及共价键的主要类型.专题:化学键与晶体结构.分析:铵根离子中存在共价键和配位键,据此分析.解答:解:铵根离子是由NH3和H+以配位键结合而成,所以离子中存在共价键和配位键,故选:C.点评:本题考查了化学键的类型,题目比较简单.10.(2分)(2014春•洛龙区校级月考)下列变化中,不需要破坏化学键的是()A.干冰气化B.氯化氢溶于水C.水通电分解成氢气和氧气D.加热使氯化钠熔化考点:不同晶体的结构微粒及微粒间作用力的区别.专题:化学键与晶体结构.分析:发生化学反应时物质中的化学键被破坏,离子化合物在熔化及电离过程中化学键被破坏,共价化合物在电离时破坏化学键,以此来分析.解答:解:A.干冰气化时只是状态发生变化,破坏分子间作用力,没有发生化学键破坏,故A选;B.氯化氢溶于水,氯化氢在水分子作用下电离出阴阳离子而破坏化学键,故B不选;C.化学反应中有旧化学键的断裂,所以水通电分解成氢气和氧气一定有化学键破坏,故C不选;D.加热使氯化钠熔化,氯化钠电离出钠离子和氯离子而破坏化学键,故D不选;故选A.点评:本题考查化学键,熟悉化学反应中、熔化、电离过程中的化学键变化是解答本题的关键,并注意利用分子间作用力不属于化学键来解答.二、单项选择题(本题共10小题,每小题3分,共30分.每小题只有一个正确选项)11.(3分)(2014春•洛龙区校级月考)下列说法不正确的是()A.N、O间形成的共价键是极性键B.SiH4的沸点高于CH4,可推测PH3的沸点高于NH3C.NH4+为正四面体,可推测出PH4+也为正四面体结构D.固体分子中一定存在分子间作用力,不一定存在化学键考点:极性键和非极性键;判断简单分子或离子的构型;氢键的存在对物质性质的影响.专题:化学键与晶体结构.分析:A、同种元素之间形成非极性共价键,不同元素之间形成极性共价键;B、利用相对分子质量分析分子间作用力,并注意氨气分子中有氢键;C、N、P是同主族元素,形成的离子NH4+和PH4+结构类似;D、稀有气体不存在化学键.解答:解:A、N、O间形成的共价键是极性键,故A正确;B、因结构相似时,相对分子质量越大,分子间作用力越大,因此SiH4的沸点高于CH4;但氨气分子间还存在氢键,则NH3的沸点高于PH3,故B错误;C、N、P是同主族元素,形成的离子NH4+和PH4+结构类似都是正四面体构型,故C正确;D、固体分子中一定存在分子间作用力,不一定存在化学键,如稀有气体,故D正确;故选B.点评:本题主要考查了化学键的分类、存在以及物质沸点的比较等,难度不大,注意特例的存在.12.(3分)(2014春•新疆校级期末)下列各元素,最易形成离子化合物的是()①第三周期第一电离能最小的元素②外围电子构型为2s22p6的原子③2p轨道为半满的元素④电负性最大的元素.A.①②B.③④C.②③D.①④考点:离子键的形成.专题:化学键与晶体结构.分析:活泼金属和活泼非金属之间易形成离子键,非金属元素之间易形成共价化合物;同一周期元素的第一电离能随着原子序数的增大而呈增大的趋势;同一周期,元素的电负性随着原子序数的增大而增大,同一主族,元素的电负性随着原子序数的增大而减小,据此分析.解答:解:①同一周期元素的第一电离能随着原子序数的增大而呈增大的趋势,所以第三周期第一电离能最小的元素是钠;②外围电子构型为2s22p6的原子是氖;③2p轨道上最多排6个电子,所以2p轨道为半满的元素是氮元素;④同一周期,元素的电负性随着原子序数的增大而增大,同一主族,元素的电负性随着原子序数的增大而减小,所以电负性最大的元素是氟元素.活泼金属和活泼非金属之间易形成离子键,非金属元素之间易形成共价化合物.通过以上分析可知,金属性最强的是钠元素,非金属性最强的是氟元素,所以最易形成离子化合物的是钠元素和氟元素,故选D.点评:本题以离子化合物为载体考查了电负性、电离能、外围电子构型等知识点,难度不大,注意同一周期元素的第一电离中,第ⅡA族元素的第一电离能大于第ⅢA族的第一电离能,第ⅤA族元素的第一电离能大于第ⅥA族的第一电离能.13.(3分)(2014春•洛龙区校级月考)下列各组物质中,酸性由强到弱排列顺序错误的是()A.HClO4H2SO4H3PO4B.HClO4HClO3HClO2C.HClO HBrO4HIO4D.H2SO4H2SO3H2CO3考点:非金属在元素周期表中的位置及其性质递变的规律.专题:元素周期律与元素周期表专题.分析:非金属元素的最高价含氧酸中,元素的非金属性越强其最高价含氧酸的酸性越强;对于同一种元素的含氧酸来说,该元素的化合价越高,其含氧酸的酸性越强.解答:解:A.P、S、Cl元素处于同一周期,且非金属性逐渐增强,且这几种酸都是其相应的最高价含氧酸,所以HClO4H2SO4H3PO4酸性逐渐减弱,故A不选;B.这几种酸都是氯元素的不同含氧酸,氯元素的化合价越高其酸性越强,所以HClO4 H2SO4H3PO4的酸性逐渐减弱,故B不选;C.高溴酸的酸性比高碘酸强,且高溴酸和高碘酸都是强酸,次氯酸是弱酸,所以酸性由强到弱的顺序是HBrO4 HIO4 HClO,故C选;D.硫酸的酸性比亚硫酸强,亚硫酸的酸性比碳酸的强,所以这几种酸的酸性逐渐减弱,故D不选;故选C.点评:本题考查酸性强弱的比较,注意非金属的非金属性强弱决定其最高价含氧酸的酸性强弱,但不决定其低价含氧酸的酸性强弱,为易错点,题目难度不大.14.(3分)(2011秋•巴中期末)当一个碳原子所连四个原子或原子团不同时,该碳原子叫“手性碳原子”.下列化合物中含有2个手性碳原子的是()A.B.C.D.考点:“手性分子”在生命科学等方面的应用;常见有机化合物的结构.专题:有机化学基础.分析:手性碳原子指连有四个不同基团的碳原子,手性碳原子判断注意:1、手性碳原子一定是饱和碳原子;2、手性碳原子所连接的四个基团要是不同的.解答:解:A .只有中间的碳为手性碳,故A错误;B .只有最下面的碳为手性碳,故B错误;C .从上到下第二和第四个碳为手性碳,故C正确;D.只有最上面的碳为手性碳,故D错误.故选C.点评:本题考查手性碳原子的判断,比较基础,手性碳原子判断注意:1、手性碳原子一定是饱和碳原子;2、手性碳原子所连接的四个基团要是不同的.15.(3分)(2013春•历下区校级期中)DNA分子的两条链之间通过氢键结合.DNA分子复制前首先将双链解开,则DNA分子复制将双链解开的过程可视为()A.化学变化B.物理变化C.既有物理变化又有化学变化D.是一种特殊的生物变化考点:物理变化与化学变化的区别与联系.专题:物质的性质和变化专题.分析:判断物理变化与化学变化的依据是:是否有新物质生成.解答:解:DNA分子的两条链之间通过氢键结合,DNA分子复制将双链解开的过程,破坏的只是氢键,没有新物质的生成,属于物理变化,故选:B.点评:本题考查了物理变化与化学变化的判断,题目难度不大,把握题干的涵义,氢键属于分子间作用力的一种,不是化学键.16.(3分)(2013秋•启东市校级期中)科学家发现铂的两种化合物a和b,实验测得a和b 具有不同的特性.a具有抗癌作用,而b没有,则下列关于a、b的叙述正确的是()A.a和b属于同一种物质B.a和b互为同分异构体C.a和b属于手性异构体D.a和b的空间构型是四面体考点:同分异构现象和同分异构体;常见有机化合物的结构.专题:同系物和同分异构体.分析:因为a与b具有不同的特性,所以a和b一定不是同一种物质,性质不同说明结构不同,而a与b分子式是相同的,所以a和b互为同分异构体,a和b的空间构型若是四面体,两个氯原子就不存在相邻和相间之分,手性异构必须镜象对称,a、b并不符合这一点.解答:解:A.a、b分子式相同,具有不同的特性,属于不同物质,故A错误;B.a、b分子式相同,具有不同的特性,说明结构不同,二者互为同分异构体,故B 正确;C.a、b不是镜象对称,所以a、b不是手性异构,故C错误;D.a和b的空间构型若是四面体,两个氯原子就不存在相邻和相间之分,故D错误,故选B.点评:本题考查同分异构体、分子结构等,注意对同分异构体的理解,充分体现结构决定性质,性质反映结构的理念.17.(3分)(2014春•洛龙区校级月考)下列关于砷(As)元素的叙述中,正确的是()A.在AsCl3分子中,砷原子最外层电子数为8B.Na3AsO4溶液的pH等于7C.砷的氢化物的化学式为AsH3,其还原性比NH3的弱D.第一电离能:As<Se考点:元素周期律和元素周期表的综合应用;位置结构性质的相互关系应用.专题:元素周期律与元素周期表专题.分析:A、As最外层有5个电子,AsCl3分子中砷原子成3对共用电子对;B、磷酸的酸性强于砷酸,磷酸钠为强碱弱酸盐,砷酸也为强碱弱酸盐;C、N的非金属性强于As,故其阴离子的还原性As3﹣>N3﹣;D、依据As的p轨道为半充满状态回答.解答:解:A、As最外层有5个电子,AsCl3分子中砷原子成3对共用电子对,形成了8个电子的稳定结构,故A正确;。
河南省洛阳市2013-2014学年高二下学期期中考试试题 数学(文) Word版含答案

洛阳市2013--2014学年第二学期期中考试高二数学试卷(文A )本试卷分第I 卷(选择题)和第Ⅱ卷(非选择题)两部分.第I 卷1至2页,第Ⅱ卷3至4页,共150分.考试时间120分钟.第I 卷(选择题,共60分)注意事项:1.答卷前,考生务必将自己姓名,考号填写在答题卷上.2.考试结束,将答题卷交回.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,只有一个是符合题目要求的.1.已知i 为虚数单位.z 为复数,下面叙述正确的是?A. z z -为纯虚数 B .任何数的偶数次幂均为非负数C .i+1的共轭复数为i-l D. 2+3i 的虚部为32.复平面内与复数 512i i-对应的点所在的象限是 A.第一象限 B .第二象限 C .第三象限 D .第四象限3.已知回归直线的斜率的估计值是2,样本点的中心为(4,12),则回归直线的方程是A. 24y x =+B. 522y x =+ C . 220y x =- D . 126y x =+ 4.若用独立性检验的方法,我们得到能有99%的把握认为变量X 与Y 有关系,则 A. 2 2.706K ≥ B. 26.635K ≥ C. 2 2.706K < D. 2 6.635K <5.复数a 十bi(a ,b ∈R)的平方为实数的充要条件是A. 220a b += B .ab=0 C .a=0,且b ≠0 D.a ≠0,且b=06.观察下面的演绎推理过程,判断正确的是大前提:若直线a ⊥直线 l ,且直线b ⊥直线 l ,则a ∥b .小前提:正方体 1111ABCD A BC D -中, 111A B AA ⊥.且1AD AA ⊥结论: 11//A B ADA. 推理正确 B .大前提出错导致推理错误C .小前提出错导致推理错误D .仅结论错误7. 232014i i i i +++⋅⋅⋅+=A. 1+iB. -1-iC. 1-iD. - l+i8.执行如图程序框图,若输出的 1112T =,则判断框内应填人 的条件是A .i>9?B .i>10?C .i>ll?D .i>12?9.A ,B ,C 是△ABC 的三个内角,下面说法:①至多有一个角大于60; ②至少有两个角大于或等于60 ;③至少有一个角小于60 ;④至多有两个角小于60 .其中正确的个数是A .3B .2C .1 D.010.锐角△ABC 中,三个内角分别为A ,B ,C ,设m= sin A+sinB+sinC,n=cosA+cosB+cosC 则m 与n 的大小关系是A. m>n B .m<n C. m-n D.以上都有可能11.已知△ABC 的三边a ,b ,c 满足 (,2)n n n a b c n N n +=∈>.则△ABC 为A .锐角三角形B .钝角三角形C. 直角三角形D. 不能确定12.对两个变量x 与y 进行回归分析,得到一组样本数据:(1,1),(2,1.5),(4,3), (5.4.5),若甲同学根据这组数据得到的回归模型 1:1y x =-,乙同学根据这组数据得到的回归模型 112:22y x =+,则 A .型1的拟合精度高 B .模型2的拟合精度高C .模型1和模型2的拟合精度一样 D.无法判断哪个模型的拟合精度高第Ⅱ卷(非选择题,共90分)二、填空题:本大题共4小题,每小题5分,共20分.1 3.用解释变量对预报变量的贡献率来刻蜮回归效果,若回归模型A 与回归模型B 的解释变量对预报变量的贡献率分别为 220.32,0.91A B R R ==,则这两个回归模型相比较,拟合效果较好的为模型__________.14.若等差数列 {}n a 的公差为d ,前n 项和为 n S 。
河南省洛阳市八中2013-2014学年高一下学期第二次月考数学(文)试题

河南省洛阳市八中2013-2014学年高一下学期第二次月考数学(文)试题一、选择题(每题5分,共60分)1.如果角α的终边过点(2sin 60,2cos60)︒-︒,则sin α的值等于( )11. . . .22A B C D - 2.已知1sin 1cos 2αα+=-,则cos 1-sin αα的值是 ( ) A .12 B .12- C .2 D .-2 3.函数y =cosx 1-sin 2x +sinx 1-cos 2x +tanx tan 2x的值域是( ) A.{3,-1 } B.{ 1,3} C.{-3,-1,1} D.{-1,1, 3}4.已知角α是第二象限角,且|2cos α|=— cos 2α,则角2α是( ) A .第一象限角 B. 第二象限角 C.第三象限角 D.第四象限角5.若1sin 63πθ⎛⎫-= ⎪⎝⎭,则cos 3πθ⎛⎫+= ⎪⎝⎭( ) A .-79 B .-13 C.13 D.796.下列四个函数中,既是(0,)2π上的增函数,又是以π为周期的偶函数的是( ) A.y =tanx B. |sin |y x = C. cos y x = D. |cos |y x = 7.为得到函数)32cos(π+=x y 的图象, 只需要将函数x y 2sin =的图象向( ) 个单位A. 左平移125πB. 右平移125πC. 左平移65πD. 右平移65π 8.已知()sin()cos()4f x a x b x παπβ=++++(,,,a b αβ为非零实数),(2013)5f =,则(2014)f =( ) A .1 B .3 C .5 D .不能确定9.函数)23sin(x y -=π的单调递减区间是( ) A .2,,;63k k k Z ππππ⎡⎤-+-+∈⎢⎥⎣⎦ B .52,2,;1212k k k Z ππππ⎡⎤-+∈⎢⎥⎣⎦C .,,;63k k k Z ππππ⎡⎤-+∈⎢⎥⎣⎦ D .5,,;1212k k k Z ππππ⎡⎤-+∈⎢⎥⎣⎦10.函数y =- 52sin(4x +2π3)的图象与x 轴的多个交点中,离原点最近的一个是( ) A. (- π6,0) B. (- π12,0) C. (π12,0) D. (π6,0) 11.函数)sin(ϕω+=x A y 在一个周期内的图象如下,此函数的解析式为( ) A.)322sin(2π+=x y B .)32sin(2π+=x y C .)32sin(2π-=x y D .)32sin(2π-=x y12. 关于函数()4sin(2),()3f x x x R π=+∈有下列命题:①由12()()0f x f x ==可得12x x -必是π的整数倍;②()f x 的表达式可改写为()4cos(2)6f x x π=-;③()f x 的图象关于点(,0)6π-对称;④()f x 的图象关于直线3x π=对称;⑤()f x 在区间,312ππ⎛⎫- ⎪⎝⎭上是增函数;其中正确的是( ) A .②③⑤ B .①②③ C .②③④ D .①③⑤二、填空(每题5分,共20分)13.扇形的周长是4,面积是1,则扇形的圆心角α的弧度数是________.14.在区间[2,2]ππ-上满足2cos sin x x =的x 的值有 个 15.__________.16.当7,66x ππ⎡⎤∈⎢⎥⎣⎦时,函数23sin 2cos y x x =--的值域为__________. 答案:13. 14.15. 16.三、简答题(共40分).17.(8分)已知tan()=2πα-,计算(1)ααααcos 2sin cos 2sin -+ (2) ()()()()22223sin 2cos sin 2cos 12sin cos παπαπαπααα+--+-+++.18.(10分)已知α∈(0,π),sin α+cos α= 31 计算(1)sinαcos α (2)sin α-cos α19(10分)已知函数cos 2(0)6y a b x b π=-+>⎛⎫ ⎪⎝⎭的最大值为23,最小值为21- (1)求b a ,的值;(2)已知函数)3sin(4)(π--=bx a x g ,当1)(-≥x g 时求自变量x 的集合.20(本题12分)已知函数R x x x f ∈-=),32sin(3)(π(1)在给定的平面直角坐标系中,利用五点法画函数)32sin(3)(π-=x x f 在以一个周期内的简图;(2)求),32sin(3)(π-=x x f []0,π-∈x 的单调增区间;(3)若方程()f x m=在]0,2-[π上有实根,求m 的取值范围.16、BBACC BABDC AA17、(1)0(2)18、(1)(2)19、(1)(2)20、(1) 略(2)(3)。
河南省洛阳八中高二数学下学期第一次月考试题 文(含解

河南省洛阳八中2013-2014学年高二下学期第一次月考数学(文)试题第Ⅰ卷(共40分)一、选择题:本大题共10个小题,每小题4分,共40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.若复数3z i =-,则z 在复平面内对应的点位于( ) A .第一象限B .第二象限C .第三象限D .第四象限2.用演绎法证明函数3y x =是增函数时的小前提是( )A .增函数的定义B .函数3y x =满足增函数的定义C .若12x x <,则12()()f x f x <D .若12x x >,则12()()f x f x >3.用火柴棒摆“金鱼”,如图所示:按照上面的规律,第n 个“金鱼”图需要火柴棒的根数为( ) A .62n - B .82n -C .62n +D .82n +【答案】C 【解析】4.有下列关系:①人的年龄与他(她)拥有的财富之间的关系;②曲线上的点与该点的坐标之间的关系;③苹果的产量与气候之间的关系;④森林中的同一种树木,其横断面直径与高度之间的关系,其中有相关关系的是( )A.①②③B.①② C.②③ D.①③④=++中,下列说法正确的是( )5.在线性回归模型y bx a e=++是一次函数A.y bx a eB.因变量y是由自变量x唯一确定的C.因变量y除了受自变量x的影响外,可能还受到其它因素的影响,这些因素会导致随机误差e的产生D.随机误差e是由于计算不准确造成的,可以通过精确计算避免随机误差e的产生考点:回归分析.︒)之间的关系,随机统计了某4天的用电量与当天气温,6.某单位为了了解用电量y(千瓦时)与气温x(C并制作了对照表:气温x (C ︒) 18 13 10 1-用电量y (千瓦时)243438644C -︒时,用电量约为( ) A .58千瓦时B . 66千瓦时C .68千瓦时D .70千瓦时7.类比平面内 “垂直于同一条直线的两条直线互相平行”的性质,可推出空间下列结论: ①垂直于同一条直线的两条直线互相平行 ②垂直于同一个平面的两条直线互相平行 ③垂直于同一条直线的两个平面互相平行④垂直于同一个平面的两个平面互相平行,则正确的结论是( ) A .①②B .②③C .③④D .①④8.若定义运算:()()a a b a b b a b ≥⎧⊗=⎨<⎩,例如233⊗=,则下列等式不能成立....的是( ) A .a b b a ⊗=⊗B .()()a b c a b c ⊗⊗=⊗⊗C .222()a b a b ⊗=⊗D .()()()c a b c a c b ⋅⊗=⋅⊗⋅(0c >)9.以下是解决数学问题的思维过程的流程图:在此流程图中,①②两条流程线与“推理与证明”中的思维方法匹配正确的是( ) A .①—综合法,②—分析法 B .①—分析法,②—综合法 C .①—综合法,②—反证法 D .①—分析法,②—反证法 【答案】A 【解析】试题分析:对于①,是由已知⇒可知(即结论),执因导果,属于综合法;对于②,是由未知⇐需知,执果索因,为分析法,故选A.考点:1.流程图;2.综合法与分析法的定义.10.已知(0,)x ∈+∞有下列各式:34224,2122≥++=+≥+x x x x x x x ,4273332733≥+++=+x x x x xx 成立,观察上面各式,按此规律若45ax x+≥,则正数a = ( ) A .4 B .5 C .44 D .55【答案】C 【解析】试题分析:观察给出的各个不等式,不难得到112x x +≥,2223x x +≥,3334x x +≥,从而第4个不等式为4445x x +≥,所以当45ax x+≥时,正数44a =,选C.考点:归纳推理.第Ⅱ卷(共60分)二、填空题(每题4分,满分16分,将答案填在答题纸上)11.若复数2(32)(1)a a a i -++-是纯虚数,则实数a 的值为__ __ .‘12.计算:2(21)122++=,3(31)1232+++=,4(41)12342++++=,……,(1)1232n n n +++++=L .以上运用的是什么形式的推理?__ __ . 【答案】归纳推理 【解析】试题分析:因为归纳推理是指:由某类事物的部分对象具有某些特征,推出该类事物的全部对象具有这些特征的推理,或者由个别事实概括出一般结论的推理,称为归纳推理,归纳推理是由部分到整体,由个别到一般的推理;所以由上面的推理过程,可知,应用的推理形式为归纳推理. 考点:归纳推理.13.下列表述:①综合法是执因导果法;②分析法是间接证法;③分析法是执果索因法;④反证法是直接证法.正确的语句是__ __ .14.观察下列式子:224 1+=,313422+=,414533+=,515644+=,……,归纳得出一般规律为.三、解答题(本大题共4小题,共44分.解答应写出文字说明、证明过程或演算步骤.)15.(本题满分10分)第17届亚运会将于2014年9月18日至10月4日在韩国仁川进行,为了搞好接待工作,组委会招募了16名男志愿者和14名女志愿者,调查发现,男、女志愿者中分别有10人和6人喜爱运动,其余不喜爱.(1)根据调查数据制作2×2列联表;(2)根据列联表的独立性检验,能否认为性别与喜爱运动有关?参考数据当2 2.706χ≤时,无充分证据判定变量A B、有关联,可以认为两变量无关联;当2 2.706χ>时,有90%把握判定变量A B、有关联;当2 3.841χ>时,有95%把握判定变量A B、有关联;当2 6.635χ>时,有99%把握判定变量A B、有关联.(参考公式:22()()()()()n ad bca b c d a c b dχ-=++++,其中n a b c d=+++.)【答案】(1)2×2列联表如下喜爱运动不喜爱运动合计男10 6 16女 6 8 14【解析】试题分析:(1)根据所给条件中的数据,列出2×2列联表即可;(2)根据列联表中的数据,代入公式计算出2χ,进而比较数据,得到结论. 试题解析:(1)2×2列联表如下(2)根据列联表中的数据,代入公式2()()()()()n ad bc a b c d a c b d χ-=++++可得2230(10866) 1.1575 2.706(106)(68)(106)(68)χ⨯-⨯=≈<++++所以不能认为性别与喜爱运动有关. 考点:独立性检验.16.(本小题满分10分)已知z 为复数,且23||()2iz z z i i-++=+(i 为虚数单位),求z .【答案】12z =-±. 【解析】17.(本题满分12分)(1)用反证法证明:在一个三角形中,至少有一个内角大于或等于60︒; (2)已知0n ≥,试用分析法证明:211n n n n +-+<+-.只需证10>因为10>显然成立,所以原命题成立.考点:1.反证法;2.分析法.18.(本小题满分12分)如图,四棱锥P ABCD -中,PD ⊥平面ABCD ,底面ABCD 为矩形,4,2,DC AD E ==为PC 的中点.(1)求证:AD PC ⊥;(2)在线段AC 上是否存在一点M ,使得//PA 平面EDM ?若存在,求出AM 的长;若不存在,请说明理由.此时2222111425222AM AC DC AD ==+=+= 即在AC 边上存在一点M ,使得//PA 平面EDM ,AM 512分.考点:1.空间中的垂直关系;2.空间中的平行关系.。
河南省洛阳市八中2013-2014学年下学期高二年级第二次月考英语试卷

河南省洛阳市八中2013-2014学年下学期高二年级第二次月考英语试卷一卷(满分70分)一阅读理解(满分30分)AEven small cuts can become infected if they are left untreated. Any break in the skin can let bacteria (细菌) enter the body. But taking good care of any injury that breaks the skin can help prevent an infection.Medical experts say the first step in treating a wound is to use clean water. Lake or ocean water should not be used. To clean the area around the wound, experts suggest using a clean cloth and soap. They say there is no need to use products like peroxide (过氧化氢).It is important to remove all dirt and other material from the wound. After the wound is clean, use a small amount of antibiotic (抗生素的) cream. They also help to keep the surface of the wound from becoming dry. Finally, cover the cut with a clean bandage while it heals. Change the bandage daily and keep the wound clean. As the wound heals, inspect for signs of infection including increased pain, redness and fluid around the cut. A high body temperature is also a sign of infection. If a wound seems infected, let the victim rest. Physical activity can spread the infection. Seek help from a doctor.For larger wounds, or in case bleeding does not stop quickly, use direct pressure. Place a clean piece of cloth on the area and hold it firmly in place until the bleeding stops or medical help arrives. Direct pressure should be kept on a wound for about twenty minutes. Do not remove the cloth if the blood drips through it. Instead, put another cloth on top and continue pressure. Use more pressure if the bleeding has not stopped after twenty minutes. If the bleeding still does not stop, send for a doctor immediately.1. To treat a wound, you should NOT ______.A. clean it with sea waterB. clean the dirt around itC. cover it with a clean clothD. use peroxide2. What should a patient with a wound do if he has a high body temperature?A. Change the bandage daily and keep the wound clean.B. Put a small amount of antibiotic cream onto the wound.C. Do nothing as it’s not serious.D. See a doctor as soon as possible.3. The underlined word “victim” in Paragraph 3 probably refers to “______”.A. woundB. painC. bandageD. patient4. Which is the RIGHT order in dealing with large wounds or bleeding?a. Put another cloth on top.b. Cover the wound with a clean cloth.c. Hold the wound tightly.d. Wash the cut with running water.e. Send for a doctor if it is needed.A. a, b, c, dB. b, c, a, eC. d, b, c, aD. c, b, a, eBThe US space shuttle Discovery’s safe landing is an obvious comfort to NASA, which wa s forced to pause construction of the half-built space station three years ago when the shuttle Columbia broke up upon re-entry into the atmosphere.After landing, shuttle commander Steve Lindsey inspected the spacecraft and declared it free of damage after its long journey. “This is my fourth flight, and I’ve never seen a vehicle that looked as clean as this one did.”That is important to NASA, because it worked more than three years to ensure that shuttles suffer as little damage as possible.NASA chief Michael Griffin attributes Discovery’s success to the new measures they had taken and a bit of luck.“This is as good a mission as we’ve ever flown, but we’re not going to get overconfident,” he said. “We have to take it flight by flight.”During Discovery’s two-week flight, the orbiter carried a third crew member to the space station, which has had only two since Columbia’s accident. It also hauled up new supplies and equipment, and its crew members made repairs to station systems critical to continuing the outpost’s construction. Michael Griffin said, “So with this flight, we are ready to get on with construction, and we will do just that.”Station construction restarts late next month, when the shuttle Atlantis is to deliver a pair of solar energy panels, new batteries and other components.Griffin points out that shuttle flights are always risky and that station assembly (装配) missions are the most complicated that shuttles fly. He says only 16 shuttle flights remain before t he fleet is retired in 2010, and more orbiter troubles could be ruinous for the space station’s construction schedule.“We don’t have any leeway (松懈),” he said. “We have just enough shuttle flights left to do the job. So, we can’t afford to mess up.”5. From the passage, we learn that __________.A Steve Lindsey has travelled four times in spaceB. it took NASA less than three years to ensure that shuttles would suffer little damageC the shuttle Discovery forced NASA to pause construction of the space stationD. Discovery’s successful flight was due to luck6. What do we know about the shuttle Discovery from the passage?A. It broke into pieces on re-entry into the atmosphere.B. Its successful flight means NASA can continue constructing the space station.C. It sent solar energy panels and new batteries to the station.D. It carried two crew members to the space station.7. It can be inferred from the passage that ______.A. Discovery is the worst damaged shuttle after a flight that Michael Griffin has ever seenB. there will be many other shuttle flights in the near futureC. the space station construction will be continued soonD. the crew members haven’t repaired the space station8. What would be the best title for this passage?A. Space station construction to be continued.B. Space flight accident avoided again.C. Space shuttle Discovery lands safely.D. The space shuttle Discovery’s two-week flight.CBurns can be caused by fire, the sun, chemicals, heated objects or fluids, and electricity. They can be minor problems or life-threatening emergencies. Distinguishing a minor burn from a more serious burn involves determining the degree of damage to the tissues of the body. If you are not sure how serious the burn is, seek emergency medical help.First-degree burns are those in which only the outer layer of skin is burned. The skin isusually red and some swelling (肿大) and pain may occur. Unless the burn involves large portions of the body, it can be treated at home.Second-degree burns are those in which the first layer of skin has been burned through and the second layer of skin is also burned. In these burns, the skin reddens intensely and blisters (水泡) develop. Severe pain and swelling also occur. Second-degree burns require medical treatment.Third-degree burns are the most serious and involve all layers of skin. Fat, nerves, muscles, and even bones may be affected. Areas may be charred black or appear a dry white. If nerve damage is substantial, there may be no pain at all. These burns require emergency medical attention.Follow these steps when treating minor burns at home1) If the skin is not broken, run cool water over the burn for several minutes.2) Cover the burn with a sterile (消过毒的) bandage or clean cloth.3) Take aspirin to relieve any swelling or pain.Seek emergency treatment immediately for major burns. Before an emergency unit arrives, follow these steps1) Remove the person from the source of the burn (fire, electrical current, etc.).2) If the person is not breathing, begin mouth-to-mouth resuscitation (人工呼吸) immediately.3) Remove all clothing to stop further burning. If the clothing is stuck to the burn, do not attempt to remove it.4) Cover the burned area with a cool, moist, sterile bandage or clean cloth. Do not place any creams, ointments (药膏) or ice on the burned area or break blisters.5) Monitor the patient for signs of shock, and treat accordingly.9. The underlined sentence in the first paragraph probab ly means “______”.A. They can be dangerous if you don’t treat them seriouslyB. They range from slight burns to deadly onesC. They seldom cause deaths even if not treated properlyD. They usually cause deaths if not treated properly10. Burns are divided into different degrees according to _______.A. what kind of treatment they needB. what kind of tissue of the body is damagedC. whether there is pain and what degree of pain there isD. which layer of skin is burned11. From the passage we learn that _______.A. if there is severe pain, then you need medical treatmentB. first-degree burns don’t require medical treatmentC. burns without pains can be treated at homeD. the larger the swelling is, the more serious it is12. It can be inferred from the passage that ______.A. you shouldn’t cover the burn with a bandage or cloth if it is severeB. you shouldn’t move the person unless you know how to do first aidC. you shouldn’t run cool water over the burn if the skin is brokenD. you shouldn’t place any w et towels on the burned areaDFarmers use different kinds of soil conservation methods to protect their land from damage by farming and the forces of nature. One important form of soil conservation is the use of windbreaks.Windbreaks are barriers (屏障) formed by trees and other plants with many leaves. Farmers plant them in lines around their fields. Windbreaks stop the wind from blowing soil away. They also keep the wind from destroying or damaging crops. They are very important for growing grains, such as wheat.There have been studies done on windbreaks in parts of West Africa, for example. They found that grain harvests can be twenty percent higher in fields protected by windbreaks compared to fields without such protection.However, windbreaks seem to work best when they allow a little wind to pass through. If the wall of trees and plants stops wind completely, then violent air motions will take place close to the ground. These motions will lift soil into the air where it will be blown away.For this reason, a windbreak is best if it has only sixty to eighty percent of the trees and plants needed to make a solid line.There should be at least two lines in each windbreak. One line should be large trees. The second line, right next to it, can be shorter trees and other plants with leaves. Locally grown trees and plants are best for windbreaks.13. What is a windbreak according to the passage?A. A windbreak is a concrete wall to prevent the strong winds.B. A windbreak is a wood with different kinds of trees.C. A windbreak is a wall of trees to hold soil in place.D. A windbreak is a wall of wind to fight wind from the opposite way.14. When can windbreaks be most effective?A. The trees are planted one by one.B. The trees and plants grow in a line.C. The trees grow as high as they can.D. Windbreaks allow a little wind to blow through.15. Which of the following statements is NOT true?A. A windbreak is one of the best forms of soil conversation.B. A windbreak is very good for growing grains such as wheat.C. One line of trees is enough for soil protection.D. Locally grown trees and plants are the top choice for a windbreak.二完形填空(满分30分)Sometimes I really doubt whether there is love between my parents. Every day they are very busy trying to __16__ in order to pay the high tuition for my brother and me. They don’t act in the __17__ ways that I read in books or I see on TV. In their opinion, “I love you” is too __18__ for them to say. Sending flowers to each other on Valentine’s Day is even more out of __19__.One day, my mother was sewing(缝制)a quilt. I sat down beside her. “Mom, I have a question to ask you. Is there __20__ between you and Dad?” I asked her in a very low voice. She didn’t answer immediately. She __21__ her head and continued to sew the quilt.I was very worried because I thought I had _22_ her. I was _23__ and I didn’t know what I should do. But at last I heard my mother say the following words“Susan,” she said thoughtfully, “Look at this thread.Sometimes it __24_, but most of it disappears in the quilt. The thread really makes the quilt __25__. If life is a quilt, then love should be a thread.It can hardly be seen __26_, but it’s really there. Love is __27__.”I listened carefully but I __28__ her until the next spring. At that time, my fathersuddenly __29_seriously. My mother had to stay with him in the hospital for a month. When they returned from the hospital, they both looked __30 _. It seemed both of them had had a serious illness. After they were back, every day in the morning and dusk, my mother helped my father__31__ on the country road.“Dad, how are you feeling now?” I asked him one day.“Susan, don’t __32__ me.” he said gently. “To tell you the truth, I just like walking with your mom.”__33__ his eyes, I know he loves my mother deeply.Once I thought love meant flowers, gifts and __34__. But from this experience, I understand that love is just __35__ in the quilt of our life. Love is inside, making life strong and warm. 16.A.keep fit B.rise early C.earn money D.collect fortune 17.A.magic B.romantic C.fantastic D.attractive18.A.simple B.easy C.relaxing D.luxurious19.A.the question B.question C.reach D.control20.A.feeling B.love C.quarrel D.smile21.A.raised B.shook C.nodded D.bowed22.A.hurt B.injured C.wounded D.harmed23.A.in great surprise B.in a great embarrassmentC.with deep depression D.at extreme sorrow24.A.happens B.comes about C.appears D.occurs 25.A.warm and soft B.hot and hardC.thin and cool D.strong and durable26.A.somewhere and sometime B.anywhere or anytimeC.more or less D.here and there27.A.inside B.outside C.faraway D.nearby28.A.could believe B.couldn’t understandC.wouldn’t recog nize D.might know29.A.got sick B.got stuck C.threw up D.became disabled 30.A.quite healthy B.very pale C.fairly red D.much surprised31.A.jump high B.go hurriedly C.run fast D.walk slowly32.A.think about B.talk with C.worry about D.laugh at33.A.Reading B.Seeing C.Saying D.Writing34.A.fresh roses B.gold ring C.sweet kisses D.beautiful jewelry35.A.a thread B.a needle C.the cloth D.the cotton三七选五(满分10分)Everyone knows that the Frenchmen are romantic, the Italians are fashionable and the Germans are serious. Are these just stereotypes or is there really such a thing as national character?And if there is, can it affect how a nation succeed or fail?At least one group of people is certain that it can. A recent survey of the top 500 entrepreneurs (企业家) in the UK found that 70% felt that their efforts were not appreciated by the British public. Britain is hostile (敌意的) to success, they said. It has a culture of jealousy(嫉妒).1 Jealousy is sometimes known as the “green –eyed monster” and the UK is its home.Scientists at Warwich University in the UK recently tested this idea. They gathered a group of people together and gave each an imaginary amount of money. 2 Those given a little were given the chance to destroy the large amount of money given to others – but at the cost of losing their own. Two thirds of the people tested agreed to do this.3 . But there is also opposite evidence. The Organization for Economic Cooperation and Development recently reported that the UK is now the world’s fourth largest economy. That is not bad for people who are supposed to hate success. People in the UK also work longer hours than anyone else in Europe. So the British people are not lazy, either.“It is not really success that the British dislike,” says Carey Cooper, a professor of management at the University of Manchester Institute of Science and Technology. “It’s people using their success in a way that seems proud or unfair or which separates them from their roots.”4 They set out to do things in their way. They work long hours. By their own efforts they become millionaires.5 .It hardly seems worth following their example. If they were more friendly, people would like them more. And more people want to be like them.A. This seems to prove that the entrepreneurs were right to complain.B.The one who owns most money in the end is the winner.C.As a result, the survey said, entrepreneurs were “unloved,unwanted and misunderstood.”D.It is not true that British people are born jealous of others` success.E. Some were given a little, others a great deal.F. But instead of being happy they complain that nobody loves them.G. Perhaps it is the entrepreneurs who are the problem.二卷(满分50分)四语法填空(每空1.5分,满分15分)One Sunday morning in August I went to local music festival. I left it early because I had an appointment__1__(late) that day. My friends walked me to the bus stop and waited with me__2__the bus arrived. I got on the bus and found a seat near the back, and then I noticed a man__3__(sit) at the front. He__4__(pretend) that a tiger toy was real and giving it a voice. Hemust be__5__(mental) disabled.Behind him were other people to__6__he was trying to talk, but after some minutes__7__walked away and sat near me, looking annoyed.I didn’t want to be laughed at for talking to him but I didn’t like leaving him__8__his own either. After a while I rose from my seat and walked to the front of the bus. I sat next to the man and introduced myself. We had__9__amazing conversation. He got off the bus before me and I felt very happy the rest of the way home. I’m glad I made a choice. It made__10__of us feel good.答案:1. __________2. __________ 3. __________4. ___________ 5. __________6. __________7. __________8. __________9. __________ 10. __________五短文改错(满分10分;严格按照规范格式作答。
河南省洛阳市八中2013-2014学年高二物理下学期第二次月考试题新人教版

河南省洛阳市八中2013-2014学年高二下学期第二次月考物理试题须知事项:1. 答题前答题卡内填写好自己的姓名、班级、考号等信息2. 请将答案正确填写在答题卡上分卷I分卷I 注释一、选择题(每一小题3分,1-19是单项选择题;20题是不定项选择题。
)1、如下关于静电除尘的说法中正确的答案是( )A.进入除尘器后,烟雾中的颗粒被强电场电离而带正电,颗粒向电源负极运动B.除尘器中的空气被电离,烟雾颗粒吸附电子而带负电,颗粒向电源正极运动C.烟雾颗粒带电后,受到竖直向下的电场力而向下运动D.烟雾颗粒被强电场粉碎成更小的颗粒,排到大气中人眼看不到2、关于元电荷和点电荷,如下说法中正确的答案是〔〕A.元电荷实质上是指电子和质子本身B.所有带电体的电荷量一定等于元电荷的整数倍C.体积很大的带电体一定不能看做点电荷D.点电荷一定是电量很小的电荷3、两个完全一样的金属小球带有电量相等的电荷,相距一定的距离,相互作用力为F,现在用第三个完全一样不带电的小金属球C先跟A接触,再和B接触,然后移去C,如此A、B 间的相互作用力为:A. F/8B. F/4C.F3/8 D. F/34、一带负电荷的质点,在电场力作用下沿曲线abc从a运动到c,质点的速率是递减的.关于b点电场强度E的方向,如下图示中可能正确的答案是(虚线是曲线在b点的切线)A.B.C.D.5、如下各图中,正确描绘两个等量正电荷电场线的是〔〕6、一充电后的平行板电容器保持两极板的正对面积、间距和电荷量不变,在两极板间插入一电介质,其电容量C和两极板间的电势差U的变化情况是A.C增大B.C减小C.U增大D.U减小7、磁敏电阻在没有磁场时电阻很小,有磁场时电阻变大,并且磁场越强阻值越大.为探测磁场的有无,利用磁敏电阻作为传感器设计了如下列图电路,电源的电动势E和内阻r不变,在没有磁场时调节变阻器R使灯泡L正常发光.假设探测装置从无磁场区进入强磁场区〔灯泡不会烧坏〕,如此 ( )A.灯泡L变亮B.灯泡L变暗C.电流表的示数变小D.电流表的示数变大8、在如下列图电路中,当滑动变阻器滑片P向下移动时,如此〔〕A.A灯变亮、B灯变亮、C灯变亮B.A灯变亮、B灯变亮、C灯变暗C.A灯变亮、B灯变暗、C灯变暗D.A灯变亮、B灯变暗、C灯变亮9、两电阻R1、R2中的电流I和电压U的关系图线如下列图,可知两电阻的大小之比R1:R2等于〔〕A.1:3 B.3:1 C.1:D.:110、关于磁感应强度的如下说法中,正确的答案是〔〕A.通电导线在磁场中受到安培力越大的位置,如此该位置的磁感应强度越大B.磁感线上某一点的切线方向就是该点磁感应强度的方向C.垂直磁场放置的通电导线的受力方向就是磁感应强度方向D.磁感应强度的大小、方向与放入磁场的导线的电流大小、导线长度、导线取向等均无关11、关于通电直导线周围磁场的磁感线分布,如下示意图正确的答案是12、如下列图,固定的水平长直导线中通有向右电流I,闭合的矩形线框与导线在同一竖直平面内,且一边与导线平行.线框由静止释放,在下落过程中〔〕A.穿过线框的磁通量保持不变B.线框所受安培力的合力为零C.线框中产生顺时针方向的感应电流D.线框的机械能不断增大13、如下关于磁通量的说法,正确的答案是〔〕A.在匀强磁场中,穿过某一个面的磁通量等于磁感应强度与该面面积的乘积B.磁通量是矢量,其正负表示方向C.磁通量是形象描述穿过某一个面的磁感线条数的物理量D.磁通量越大,磁通量的变化就越快14、如下列图,闭合线圈上方有一竖直放置的条形磁铁,磁铁的N极朝下,当磁铁向下运动时(但未插入线圈内部)( )A.线圈中感应电流的方向与图中箭头方向一样,磁铁与线圈相互吸引B.线圈中感应电流的方向与图中箭头方向一样,磁铁与线圈相互排斥C.线圈中感应电流的方向与图中箭头方向相反,磁铁与线圈相互吸引D.线圈中感应电流的方向与图中箭头方向相反,磁铁与线圈相互排斥15、如下列图,足够长平行金属导轨倾斜放置,倾角为370,宽度为0.5m,电阻忽略不计,其上端接一小灯泡,电阻为1Ω。
河南省洛阳市八中2013-2014学年高二英语下学期第二次月考试题新人教版

河南省洛阳市八中2013-2014学年高二下学期第二次月考英语试题一卷〔总分为70分〕一阅读理解〔总分为30分〕AEven small cuts can become infected if they are left untreated. Any break in the skin can let bacteria (细菌) enter the body. But taking good care of any injury that breaks the skin can help prevent an infection.Medical experts say the first step in treating a wound is to use clean water. Lake or ocean water should not be used. To clean the area around the wound, experts suggest using a clean cloth and soap. They say there is no need to use products like peroxide (过氧化氢).It is important to remove all dirt and other material from the wound. After the wound is clean, use a small amount of antibiotic (抗生素的) cream. They also help to keep the surface of the wound from becoming dry. Finally, cover the cut with a clean bandage while it heals. Change the bandage daily and keep the wound clean. As the wound heals, inspect for signs of infection including increased pain, redness and fluid around the cut. A high body temperature is also a sign of infection. If a wound seems infected, let the victim rest. Physical activity can spread the infection. Seek help from a doctor.For larger wounds, or in case bleeding does not stop quickly, use direct pressure. Place a clean piece of cloth on the area and hold it firmly in place until the bleeding stops or medical help arrives. Direct pressure should be kept on a wound for about twenty minutes. Do not remove the cloth if the blood drips through it. Instead, put another cloth on top and continue pressure. Use more pressure if the bleeding has not stopped after twenty minutes. If the bleeding still does not stop, send for a doctor immediately.1. To treat a wound, you should NOT ______.A. clean it with sea waterB. clean the dirt around itC. cover it with a clean clothD. use peroxide2. What should a patient with a wound do if he has a high body temperature?A. Change the bandage daily and keep the wound clean.B. Put a small amount of antibiotic cream onto the wound.C. Do nothing as it’s not serious.D. See a doctor as soon as possible.3. The underlined word “victim〞in Paragraph 3 probably refers to “______〞.A. woundB. painC. bandageD. patient4. Which is the RIGHT order in dealing with large wounds or bleeding?a. Put another cloth on top.b. Cover the wound with a clean cloth.c. Hold the wound tightly.d. Wash the cut with running water.e. Send for a doctor if it is needed.A. a, b, c, dB. b, c, a, eC. d, b, c, aD. c, b, a, eBThe US space shuttle Discovery’s safe landing is an obvious com fort to NASA, which was forced to pause construction of the half-built space station three years ago when the shuttle Columbia broke up upon re-entry into the atmosphere.After landing, shuttle commander Steve Lindsey inspected the spacecraft and decla red it free of damage after its long journey. “This is my fourth flight, and I’ve never seen a vehicle that looked as clean as this one did.〞That is important to NASA, because it worked more than three years to ensure that shuttles suffer as little damage as possible.NASA chief Michael Griffin attributes Discovery’s success to the new measures they had taken and a bit of luck.“This is as good a mission as we’ve ever flown, but we’re not going to get overconfident,〞he said. “We have to take it flight by flight.〞During Discovery’s two-week flight, the orbiter carried a third crew member to the space station, which has had only two since Columbia’s accident. It also hauled up new supplies and equipment, and its crew members made repairs to station systems critical to continuing the outpost’s construction. Michael Griffin said, “So with this flight, we are ready to get on with construction, and we will do just that.〞Station construction restarts late next month, when the shuttle Atlantis is to deliver a pair of solar energy panels, new batteries and other components.Griffin points out that shuttle flights are always risky and that station assembly (装配) missions are the most complicated that shuttles fly. He says only 16 shuttle flights remain before the fleet is retired in 2010, and more orbiter troubles could be ruinous for the space station’s construction schedule.“We don’t have any leeway (松懈),〞 he said. “We have just enough shuttle flights left to do the job. So, we can’t afford to mess up.〞5. From the passage, we learn that __________.A Steve Lindsey has travelled four times in spaceB. it took NASA less than three years to ensure that shuttles would suffer little damageC the shuttle Discovery forced NASA to pause construction of the space stationD. Discovery’s successful flight was due to luck6. What do we know about the shuttle Discovery from the passage?A. It broke into pieces on re-entry into the atmosphere.B. Its successful flight means NASA can continue constructing the space station.C. It sent solar energy panels and new batteries to the station.D. It carried two crew members to the space station.7. It can be inferred from the passage that ______.A. Discovery is the worst damaged shuttle after a flight that Michael Griffin has ever seenB. there will be many other shuttle flights in the near futureC. the space station construction will be continued soonD. the crew members haven’t repaired the space station8. What would be the best title for this passage?A. Space station construction to be continued.B. Space flight accident avoided again.C. Space shuttle Discovery lands safely.D. The space shuttle Discovery’s two-week flight.CBurns can be caused by fire, the sun, chemicals, heated objects or fluids, and electricity.They can be minor problems or life-threatening emergencies. Distinguishing a minor burn from a more serious burn involves determining the degree of damage to the tissues of the body. If you are not sure how serious the burn is, seek emergency medical help.First-degree burns are those in which only the outer layer of skin is burned. The skin is usually red and some swelling (肿大) and pain may occur. Unless the burn involves large portions of the body, it can be treated at home.Second-degree burns are those in which the first layer of skin has been burned through and the second layer of skin is also burned. In these burns, the skin reddens intensely and blisters (水泡) develop. Severe pain and swelling also occur.Second-degree burns require medical treatment.Third-degree burns are the most serious and involve all layers of skin. Fat, nerves, muscles, and even bones may be affected. Areas may be charred black or appear a dry white. If nerve damage is substantial, there may be no pain at all. These burns require emergency medical attention.Follow these steps when treating minor burns at home1) If the skin is not broken, run cool water over the burn for several minutes.2) Cover the burn with a sterile (消过毒的) bandage or clean cloth.3) Take aspirin to relieve any swelling or pain.Seek emergency treatment immediately for major burns. Before an emergency unit arrives, follow these steps1) Remove the person from the source of the burn (fire, electrical current, etc.).2) If the person is not breathing, begin mouth-to-mouth resuscitation (人工呼吸) immediately.3) Remove all clothing to stop further burning. If the clothing is stuck to the burn, do not attempt to remove it.4) Cover the burned area with a cool, moist, sterile bandage or clean cloth. Do not place any creams, ointments (药膏) or ice on the burned area or break blisters.5) Monitor the patient for signs of shock, and treat accordingly.9. The underlined sentence in the first paragraph probably means “______〞.A. They can be dangerous if you don’t treat them seriouslyB. They range from slight burns to deadly onesC. They seldom cause deaths even if not treated properlyD. They usually cause deaths if not treated properly10. Burns are divided into different degrees according to _______.A. what kind of treatment they needB. what kind of tissue of the body is damagedC. whether there is pain and what degree of pain there isD. which layer of skin is burned11. From the passage we learn that _______.A. if there is severe pain, then you need medical treatmentB. first-degree burns don’t require medical treatmentC. burns without pains can be treated at homeD. the larger the swelling is, the more serious it is12. It can be inferred from the passage that ______.A. you shouldn’t cover the burn with a bandage or cloth if it is severeB. you shouldn’t move the person unless you know how to do first aidC. you shouldn’t run cool water over the burn if the skin is brokenD. you shouldn’t place any wet towels on the burned ar eaDFarmers use different kinds of soil conservation methods to protect their land from damage by farming and the forces of nature. One important form of soil conservation is the use of windbreaks.Windbreaks are barriers (屏障) formed by trees and other plants with many leaves. Farmers plant them in lines around their fields. Windbreaks stop the wind from blowing soil away. They also keep the wind from destroying or damaging crops. They are very important for growing grains, such as wheat.There have been studies done on windbreaks in parts of West Africa, for example. They found that grain harvests can be twenty percent higher in fields protected by windbreaks compared to fields without such protection.However, windbreaks seem to work best when they allow a little wind to pass through. If the wall of trees and plants stops wind completely, then violent air motions will take place close to the ground. These motions will lift soil into the air where it will be blown away.For this reason, a windbreak is best if it has only sixty to eighty percent of the trees and plants needed to make a solid line.There should be at least two lines in each windbreak. One line should be large trees. The second line, right next to it, can be shorter trees and other plants with leaves. Locally grown trees and plants are best for windbreaks.13. What is a windbreak according to the passage?A. A windbreak is a concrete wall to prevent the strong winds.B. A windbreak is a wood with different kinds of trees.C. A windbreak is a wall of trees to hold soil in place.D. A windbreak is a wall of wind to fight wind from the opposite way.14. When can windbreaks be most effective?A. The trees are planted one by one.B. The trees and plants grow in a line.C. The trees grow as high as they can.D. Windbreaks allow a little wind to blow through.15. Which of the following statements is NOT true?A. A windbreak is one of the best forms of soil conversation.B. A windbreak is very good for growing grains such as wheat.C. One line of trees is enough for soil protection.D. Locally grown trees and plants are the top choice for a windbreak.二完形填空〔总分为30分〕Sometimes I really doubt whether there is love between my parents. Every day they are very busy trying to __16__ in order to pay the high tuition for my brother and me. They don’t act in the __17__ ways that I read in books or I see on TV. In their opinion, “I love you〞 is too __18__ for them to say. Sending flowers to each other on Valentine’s Day is even more out of __19__.One day, my mother was sewing〔缝制〕a quilt. I sat down beside her. “Mom, I have a question to ask you. Is there __20__ between you and Dad?〞 I asked her in a very low voice. She didn’t answer immediately. She __21__ her head and continued to sew the quilt.I was very worried because I thought I had _22_ her. I was _23__ and I didn’t know what I should do. But at last I heard my mother say the following words“Susan,〞she said thoughtfully, “Look at this thread.Sometimes it __24_, but most of it disappears in the quilt. The thread really makes the quilt __25__. If life is a quilt, then love should be a thread.It can hardly be seen __26_, but it’s really there. Love is __27__.〞I listened carefully but I __28__ her until the next spring. At that time, my father suddenly __29_seriously. My mother had to stay with him in the hospital for a month. When they returned from the hospital, they both looked __30 _. It seemed both of them had had a serious illness. After they were back, every day in the morning and dusk, my mother helped my father __31__ on the country road.“Dad, how are you feeling now?〞I asked him one day.“Susan, don’t __32__ me.〞he said gently. “To tell you the truth, I just like walking with your mom.〞__33__ his eyes, I know he loves my mother deeply.Once I thought love meant flowers, gifts and __34__. But from this experience, I understand that love is just __35__ in the quilt of our life. Love is inside, making life strong and warm.16.A.keep fit B.rise early C.earn money D.collect fortune17.A.magic B.romantic C.fantasticD.attractive18.A.simple B.easy C.relaxingD.luxurious19.A.thequestion B.question C.reachD.control20.A.feeling B.love C.quarrelD.smile21.A.raised B.shook C.noddedD.bowed22.A.hurt B.injured C.wounded D.harmed23.A.in great surprise B.in a great embarrassmentC.with deep depression D.at extreme sorrow24.A.happens B.comesaboutC.appears D.occurs25.A.warm and soft B.hot and hardC.thin and cool D.strong and durable26.A.somewhere and sometime B.anywhere or anytimeC.more orlessD.here and there27.A.inside B.outside C.farawayD.nearby28.A.could believe B.couldn’t understandC.wouldn’t recogniz e D.might know29.A.got sick B.got stuck C.threw up D.became disabled30.A.quite healthy B.very pale C.fairly red D.much surprised31.A.jump high B.go hurriedly C.run fast D.walk slowly 32.A.think about B.talk with C.worry about D.laugh at 33.A.Reading B.Seeing C.SayingD.Writing34.A.fresh roses B.gold ring C.sweet kisses D.beautiful jewelry35.A.a thread B.a needle C.the cloth D.the cotton三七选五〔总分为10分〕Everyone knows that the Frenchmen are romantic, the Italians are fashionable and the Germans are serious. Are these just stereotypes or is there really such a thing as national character? And if there is, can it affect how a nation succeed or fail?At least one group of people is certain that it can. A recent survey of the top 500 entrepreneurs (企业家) in the UK found that 70% felt that their efforts were not appreciated by the British public. Britain is hostile (敌意的) to success, they said. It has a culture of jealousy(嫉妒). 71 Jealousy is sometimes known as the “green – eyed monster〞 and the UK is its home.Scientists at WarwichUniversity in the UK recently tested this idea. They gathered a group of people together and gave each an imaginary amount of money. 72 Those given a little were given the chance to destroy the large amount of money given to others – but at the cost of losing their own. Two thirds of the people tested agreed to do this.73 . But there is also opposite evidence. The Organization for Economic Co operation and Development recently reported that the UK is now the world’s fourth largest economy. That is not bad for people who are supposed to hate success. People in the UK also work longer hours than anyone else in Europe. So the British people are not lazy, either.“It is not really success that the British dislike,〞 says Carey Cooper, a professor of management at the University of Manchester Institute of Science andTechnology. “It’s people using their success in a way that seems proud or unfair or which separates them from their roots.〞74 They set out to do things in their way. They work long hours. By their own efforts they become millionaires. 75 .It hardly seems worth following their example. If they were more friendly, people would like them more. And more people want to be like them.A. This seems to prove that the entrepreneurs were right to complain.B.The one who owns most money in the end is the winner.C.As a result, the survey said, entrepreneurs were “unloved, unwanted and misunderstood.〞D.It is not true that British people are born jealous of others` success.E. Some were given a little, others a great deal.F. But instead of being happy they complain that nobody loves them.G. Perhaps it is the entrepreneurs who are the problem.二卷〔总分为50分〕班级:_________ 姓名:___________ 考号:___________四语法填空(每空1.5分,总分为15分)One Sunday morning in August I went to local music festival. I left it early because I had an appointment__1__(late) that day. My friends walked me to the bus stop and waited with me__2__the bus arrived. I got on the bus and found a seat near the back, and then I noticed a man__3__(sit) at the front. He__4__(pretend) that a tiger toy was real and giving it a voice. He must be__5__(mental) disabled.Behind him were other people to__6__he was trying to talk, but after some minutes__7__walked away and sat near me, looking annoyed.I didn’t want to be laughed at for talking to him but I didn’t like leaving him__8__his own either.After a while I rose from my seat and walked to the front of the bus. I sat next to the man and introduced myself. We had__9__amazing conversation. He got off the bus before me and I felt very happy the rest of the way home.I’m glad I made a choice. It made__10__of us feel good.答案:1. __________2. __________ 3. __________4. ___________ 5. __________6. __________7. __________8. __________9. __________ 10. __________五短文改错〔总分为10分;严格按照规范格式作答。
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河南省洛阳市八中2013-2014学年高二下学期第二次月考数学(文)试题
一、选择题(每小题4分,共40分)
1.曲线的极坐标方程θρsin 4=化为直角坐标为( ).
A.4)2(22=++y x
B.4)2(22=-+y x
C.4)2(22=+-y x
D.4)2(22=++y x
2.已知点P 的极坐标是),1(π,则过点P 且垂直极轴的直线方程是
( ).
A.1=ρ
B.θρcos =
C.θρcos 1-=
D.θρcos 1= 3.已知点M 的极坐标为⎪⎭⎫ ⎝⎛35π
,,下列所给四个坐标中能表示点M 的坐标
是( ).
A.53,-⎛⎝ ⎫⎭⎪π
B.543,π⎛⎝ ⎫⎭⎪
C.523,-⎛⎝ ⎫⎭⎪π
D.⎪⎭
⎫ ⎝⎛-355π, 4.若直线的参数方程为12()23x t t y t =+⎧⎨=-⎩
为参数,则直线的斜率为( ). A.23 B.23- C.32 D.32
- 5.直线3x-4y-9=0与圆:⎩
⎨⎧==θθsin 2cos 2y x ,(θ为参数)的位置关系是( ). A.相切 B.相离 C.直线过圆心 D.相交但直线不过圆心
6.在参数方程⎩
⎨⎧+=+=θθsin cos t b y t a x (t 为参数)所表示的曲线上有B 、C 两点,它们对应的参数值分别为t 1、t 2,则线段BC 的中点M 对应的参数
值是( ).
7.实数x 、y 满足3x 2+2y 2=6x ,则x 2+y 2的最大值为( ).
A.27
B.4
C.29
D.5
8.直线()的倾斜角为为参数t l t x t y ︒
︒+-=+=20sin 220cos 5{:( )
A.200
B.700
C.1600
D.1200.
率为
相切,则双曲线的离心为参数)的渐近线与曲线、已知双曲线θθθ({)0,0(19cos 2sin y 22
22+==>>=-x b a b
y a x A 、2 B 、2 C 、23 D 、3
32
A(,))C(,)310、在极坐标系中,2、、00则ABC 为24
ππ--∆( ) A 、正三角形 B 、直角三角形
C 、锐角等腰三角形
D 、直角等腰三角形
二、填空题(每小题4分,共16分)
11、圆锥曲线()为参数θθθ⎩
⎨⎧==sec 3tan 2y x 的离心率是 。
12、直线l 过点()5,10M ,倾斜角是3
π,且与直线032=--y x 交于M , 则0MM 的长为
13、 在极坐标系中,以)2,2(πa 为圆心,2
a 为半径的圆的 极坐标方程是 。
14、 在极坐标中,若过点)0,3(且与极轴垂直的直线交曲线θρcos 4=于
A 、
B 两点,则AB = 。
答题卷
二、填空题(每小题4分,共16分)
11、 12、 13、 14、
三、解答题(每小题11分共44分)
15.在极坐标系下,已知圆O :cos sin ρθθ=+
和直线:sin()42
l πρθ-=, (1)求圆O 和直线l 的直角坐标方程;
(2)当()0,θπ∈时,求直线l 与圆O 公共点的一个极坐标.
16.已知直线l 的参数方程为: {
x t
y ==(t 为参数),曲线C 的极坐标方程为:12cos 2=θρ.
(1)求曲线C 的普通方程;
(2)求直线l 被曲线C 截得的弦长.
17、已知直线l 经过点)1,1(P ,倾斜角6π
α=。
(1)写出直线l 的参数方程;
(2)设l 与圆422=+y x 相交于两点A 、B,求点P 到A 、B 两点的距离之积。
18、已知曲线C 1的参数方程为{
x cos t t y sin t 45(为参数)55=+=+,以坐标原点为
极点,x 轴的正半轴为极轴建立极坐标系,曲线C 2的极坐标方程为.sin 2θρ=
(1)把C 1的参数方程化为极坐标方程;
(2)求C 1与C 2交点的极坐标()πθρ20,0<≤≥。