北京市西城区2012届高三第二次高考模拟 理综化学部分(2012西城二模)

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北京市西城区2012年高三二模试卷政治试题及答案

北京市西城区2012年高三二模试卷政治试题及答案

北京市西城区2012年高三二模试卷政治2012.5 24.在以“我国的国家利益”为题的研究性学习中,高一(2)班同学收集到了以下信息:维✧国家统一、民族团结,是中华民族的最高利益。

✧欧盟强征航空业碳排放税是借环保之名牺牲发展中国家的利益。

✧某国企图对钓鱼岛附属岛屿命名,是损害中国核心利益之举。

✧我国将不断拓展新的开放领域和空间,扩大和深化与各方利益的汇合点。

护我国的国家利益,应①维护好发展好广大人民的根本利益②把维护世界和平发展放在首位③维护我国的安全、政治、经济利益④维护好各国复杂的国家利益A.①③B.②④C.①④D.②③25.“中国的和平发展:战略的选择,郑重的承诺”,作为世界第二大经济体,中国将继续坚持和平发展之路。

文化学者认为,中国选择走和平发展之路,体现了对中华文化优秀传统的继承,因为①“海纳百川,有容乃大”,中华民族友好的吸收一切外来文化②“以和为贵”的和谐文化培育了中国人民热爱和平的民族禀性③中华文化崇尚“己所不欲,勿施于人”,不将自己意志强加于人④崇尚“和而不同”的中华文化,深深植根于中华民族精神之中A.①③B.①④C.②③D.②④26.“买船出海,扬帆中国梦”,某传媒股份有限公司成功收购了一家美国当地的传媒企业后,两年建起了16个频道,收视人群超7000万。

中国传媒海外并购①有利于中华文化“走出去”②推动了科学技术与文化的有效结合③体现了文化与政治的相互交融④有利于中美文化的沟通、传递和共享A.①③B.②④C.①④D.②③27.“您还在为孩子的成绩烦恼吗?**培训为您解忧。

”自从小航妈妈在培训机构咨询时留下了个人信息后,手机每天都会收到十多条培训广告,不堪其扰。

针对小广告的骚扰A.公众应增强义务意识,寻求有关部门的帮助B.政府应做好市场监管,加强个人信息的保护C.培训机构应依法经营,收集散布个人的信息D.人大代表应履行职责,监督管理好培训机构28.北京市某区区委用图片展的方式,向社会公开共产党中层组织的“权力清单”:区党代会职权3项、区委全委会职权8项、区委常委会职权36项、区委常委会成员职权109项、区委各部门职权139项。

2012年北京市西城区高三二模理综物理试题及答案(word版)

2012年北京市西城区高三二模理综物理试题及答案(word版)

1北京市西城区2012年高三二模试卷物 理 试 题 2012.513.一束单色光从空气射入玻璃中,下列说法正确的是A .若入射角足够大,则能发生全反射B .光在玻璃中的波长小于在空气中的波长C .光子在玻璃中的能量大于在空气中的能量D .光在玻璃中的传播速度大于在空气中的传播速度 14.下列过程吸收能量的是A .重核裂变B .轻核聚变C .原子从较高能级跃迁到较低能级D .原子从较低能级跃迁到较高能级15.如图所示,在两个水平放置的平行金属板之间,电场和磁场的方向相互垂直。

一束带电粒子(不计重力)沿着直线穿过两板间的空间而不发生偏转。

则这些粒子一定具有相同的A .质量mB .电量qC .运动速度vD .比荷mq16.已知甲、乙两个绕月飞行器的圆形轨道距月球表面分别约为r 1和r 2,月球半径为R 。

甲、乙的运动速度大小分别用v 1和v 2表示。

则v 1和v 2的比值为 A .21r r B .12r rC .21r R r R ++ D .12r R r R ++17.一简谐横波沿x 轴正方向传播。

波源的位移y 随时间t 的变化规律可以用表达式t y π4sin 2.0=表示,式中位移y 的单位是m ,时间t 的单位是s 。

该简谐横波的波速为v =4.0m/s 。

则 A .这列波的波长λ=2.0mB .这列波的波长λ=0.20mC .介质中任意一点开始振动后,在一个周期内运动的路程s =0.2mD .介质中任意一点开始振动后,在一个周期内运动的路程s =0.4m218.如图所示,P 、Q 、A 、B 四个点在同一条直线上,分别把两个正、负点电荷置于P 、Q 两点。

A 、B 两点间的电势差用U 表示,A 点的电场强度用E 表示。

若把Q 点的点电荷的电荷量减半,则 A .U 变大,E 变大 B .U 变小,E 变小 C .U 变小,E 变大 D .U 变大,E 变小19.如图1所示,矩形导线框ABCD 固定在匀强磁场中,磁感线垂直于线框所在平面向里。

2012二模试题答案0420

2012二模试题答案0420

北京市西城区2012年高三二模试卷物理试题参考答案 2012.513.B 14.D 15.C 16.D 17.A 18.B 19.B 20.C21.(18分)(1)①匀速直线 远小于②0.343③A(2)①如图所示②增大 增大③0.81(0.80—0.82)0.62(0.60—0.64)评分说明:本题共18分。

第(1)题中第①小题每空1分,第②和③小题各2分。

第(2)题中第①小题3分;第②小题中每空2分;第③小题中第一个空2分,第二个空3分。

22.(16分)(1)小球所受的电场力mg Eq F 43==(2)根据平行四边形定则 mg Eq mg F 45)()22=+=(合 根据牛顿第二定律 ma F =合图2所以,小球的加速度g a 45=(3)根据动能定理 0212-=-mv Eql mgl 解得 22glv =评分说明:本题共16分。

第(1)问4分;第(2)问6分;第(3)问6分23.(18分)(1)总效率%100⨯=总有用E E η71%% 1001410=⨯= (2)能用于发电的水的总质量V m ρ= 所以,能用于发电的水的最大重力势能)2(P d H Vg mgh E -==ρ (3)a .当输电电压为U 时,输电电流U P I =所以,损失功率R UP R I P 22)(==∆ 所以,输电电压的最小值P R PU ∆= b .增大输电导线的横截面积;改用电阻率小的输电导线;提高输电电压。

评分说明:本题共18分。

第(1)问4分;第(2)问6分;第(3)问8分。

24.(20分)(1)对物体B 受力分析如图1所示,根据共点力平衡条件 T 1=m 3g ① 对物体A 和木板组成的整体受力分析如图2所示 根据共点力平衡条件得 F 1=T 1 ② 代入数据,由①、②得 F 1=10N(2)运动过程中,三个物体的加速度大小相等,设加速度大小为a 。

对物体B 受力分析如图3所示,根据牛顿第二定律 T 2–m 3g = m 3a ③ 对物体A 受力分析如图4所示, 根据牛顿第二定律 f –T 2 = m 2a ④ 此时,f =μm 2g ⑤ 代入数据,由③、④、⑤式得a =2.0m/s 2 对木板受力分析如图5所示,T 1 m 3g B图1 图2图4 T 2 m 3g B 图3 fF 2 图5a根据牛顿第二定律 F 2–f = m 1a ⑥将加速度代入⑥式得 F 2= 60N(3)由于木板与物体A 之间的最大静摩擦力等于滑动摩擦力,物体A 、B 运动的加速度与(2)中的加速度相等。

2012年北京市东城、西城、海淀三区理综二模化学试题汇编

2012年北京市东城、西城、海淀三区理综二模化学试题汇编

东城区二模---化学6.下列说法正确的是( ) A. 碘、铁都是人体必需的微量元素;B. 淀粉和纤维素互为同分异构体,均可水解得到葡萄糖;C. 碳酸钡、碳酸氢钠、氢氧化镁等均可作为抗酸药物使用;D. 聚氯乙烯塑料制品可用于食品包装。

7.下列说法不正确...的是( ) A.46 g C 2H 6O 中共用电子对数为8×6.02×1023; B. 20 g 重水(D 2O)中含有的电子数为10×6.02×1023;C. 100 mL 2.0 mol·L -1 NH 4HCO 3溶液中NH 4+ 数为0.2×6.02×1023;D. 标准状况下,22.4 L NO 与CO 的混合气体中含有的原子数为2×6.02×1023。

8.下列事实可以用同一原理解释的是( ) A. 漂白粉和明矾都常用于自来水的处理; B. 乙烯可使溴水或酸性高锰酸钾溶液褪色; C. 铁片和铝片置于冷的浓硫酸中均无明显现象; D. 苯酚和氢氧化钠溶液在空气中久置均会变质。

9. 模拟铁的电化学防护的实验装置如右图所示,下列说法不正确...的是( ) A. 若X 为碳棒,开关K 置于A 处可减缓铁的腐蚀; B. 若X 为锌棒,开关K 置于A 或B 处均可减缓铁的腐蚀;C. 若X 为锌棒,开关K 置于B 处时,铁电极上发生的反应为:2H ++2e —=H 2↑;D. 若X 为碳棒,开关K 置于A 处时,铁电极上发生的反应为2H ++2e —=H 2↑。

10. 氢化热是指一定条件下,1 mol 不饱和化合物加氢时放出的热量。

表中是环己烯)、下列说法正确的是( )A. 环己二烯与H 2的反应最剧烈;B. 环己烯、环己二烯和苯有相同的官能团;K AB 食盐水XFeC. 三种化合物中环己二烯的稳定性最强;D. 上述条件下,1 mol转变为时放热113 kJ。

2012北京西城中考化学二模

2012北京西城中考化学二模

2012北京西城中考化学二模
备考期间,中考生可通过以下方法复习化学:1、注重习题训练:习题训练要突出知识与问题的整合,即做到“以知识引问题”和“以问题带知识”相结合,弄清哪些知识宜用怎样的问题呈现,问题中包含了哪些知识。

2、做好变式拓展和科学探究训练:变式拓展即探讨一题多法,有助于强化反思性学习,优化知识结构。

科学探究主要包括化学实验基础知识和利用实验手段进行问题探究。

3、掌握命题意图:要在已经做过的练习中找出命题的意图,考查的知识点和解题的思路以及自己解本题的障碍在哪些地方,以提高自己的解题能力。

4、结合实际针对性训练:(1)选择近几年的期末试题进行分析和练习,要从中总结经常涉及的知识点和重点复习。

(2)选择有代表性的题目进行训练,分层突破,逐步提高。

(3)将答过的错题重新看一遍,检查自己是否已经会做,不留后遗症。

良好的解题习惯是取得高分的基础。

因此,在平时的学习中要重视训练自己良好的学习习惯,读题要认真仔细,答题要规范严谨,避免因非智力因素造成无谓的失分。

北京市区县2012年高考化学二模试题分类汇编7 化学实验

北京市区县2012年高考化学二模试题分类汇编7 化学实验

2012年北京市区县二模试题分类汇编7化学实验2012西城二模-9. 下列实验结论不.正确..的是2012西城二模-10.某无色溶液中若含有大量Na2SO4、Na2CO3、NaOH,为验证其中所含的阴离子,若限定只取一次待测液,加入试剂顺序正确的是A.盐酸、BaCl2、酚酞B.BaCl2、盐酸、酚酞C.BaCl2、酚酞、盐酸D.酚酞、盐酸、BaCl22012昌平区二模-9.下列说法中正确的是A.除去甲苯中混有的苯酚,可先加入NaOH溶液,再进行过滤B.对苯二甲酸和1,4-丁二醇作用形成的聚合物的链节中只含有一个苯环C.制作豆腐及淀粉水解均与蛋白质变性有关D.蔗糖及其水解产物均可发生银镜反应-10.下列实验操作与预期实验目的或所得实验结论一致的是2012昌平区二模2012丰台二模-8.下列实验方案不能..达到预期目的的是2012海淀二模-10.孔雀石的主要成分为xCuCO3·yCu(OH)2·zH2O,为测定其中CuCO3的质量分数,称取a g样品进行实验。

下列实验方案可行的是A. 充分加热样品,用碱石灰吸收逸出气体,增重b gB. 加热至样品质量不再发生变化,称得其质量为b gC. 向样品中加入足量的稀盐酸,用排水法收集逸出气体,得b mL气体D. 向样品中加入足量的稀盐酸,充分反应,将生成的气体全部通入到足量Ba(OH)2溶液中,过滤、洗涤、烘干,得b g固体2012-顺义二模-8.下列说法不正确...的是图Ⅰ 图Ⅱ 图Ⅲ 图Ⅳ A.图Ⅰ所示装置可制备氢氧化亚铁B.图Ⅱ所示装置可电解制氯气和氢气C.图Ⅲ所示装置可验证氨气在水中的溶解性D.图Ⅳ所示装置和操作可从苯酚中分离出苯2012-顺义二模-10.下述实验能达到预期目的的是2012海淀二模-27.(12分)某同学欲在实验室中对Fe3+与I-的反应进行探究,实现Fe2+与Fe3+的相互转化。

(1)该同学最初的实验操作和现象如下:编号操作现象I 先向2 mL 0.1 mol/L FeCl2溶液中滴加KSCN溶液,再滴加新制氯水II 先向2 mL 0.1 mol/L FeCl3溶液中滴加KSCN 溶液,再滴加0.1 mol/L KI溶液滴加KSCN溶液后,溶液变成红色;滴加KI溶液后,红色无明显变化①实验I的现象为。

2西城12二模理

2西城12二模理

北京市西城区2012年高三二模试卷数学(理科)2012.5第Ⅰ卷(选择题 共40分)一、选择题共8小题,每小题5分,共40分. 在每小题列出的四个选项中,选出符合题目要求的一项.1.已知集合,,其中.若,则的取值范围是()(A)(B)(C)(D)2.执行如图所示的程序框图,若输入如下四个函数:①;②;③;④.则输出函数的序号为()(A)① (B)②(C)③ (D)④3.椭圆是参数的离心率是()(A)(B)(C)(D)4.已知向量,,其中.则“”是“”的()(A)充分而不必要条件(B)必要而不充分条件(C)充要条件(D)既不充分又不必要条件5.右图是,两组各名同学体重(单位:)数据的茎叶图.设,两组数据的平均数依次为和,标准差依次为和,那么( )(注:标准差,其中为的平均数)(A),(B),(C),(D),6.已知函数,其中实数随机选自区间.对,的概率是()(A)(B)(C)(D)7.某大楼共有层,有人在第层上了电梯,他们分别要去第至第层,每层人.因特殊原因,电梯只允许停次,只可使人如愿到达,其余人都要步行到达所去的楼层.假设这位乘客的初始“不满意度”均为,乘客每向下步行层的“不满意度”增量为,每向上步行层的“不满意度”增量为,人的“不满意度”之和记为,则的最小值是()(A)(B)(C)(D)8.对数列,如果及,使成立,其中,则称为阶递归数列.给出下列三个结论:1 若是等比数列,则为阶递归数列;2 若是等差数列,则为阶递归数列;3 若数列的通项公式为,则为阶递归数列.其中,正确结论的个数是()(A)(B)(C)(D)第Ⅱ卷(非选择题 共110分)二、填空题共6小题,每小题5分,共30分.9.在△中,,,,则 _____.10.已知复数满足,则_____.11.如图,△是⊙的内接三角形,是⊙的切线,交于点,交⊙于点.若,,,,则_____;_____.12.已知函数是上的偶函数,则实数_____;不等的解集为_____.13.一个几何体的三视图如图所示,其中正视图和侧视图是腰长为的两个全等的等腰直角三角形,该几何体的体积是_____;若该几何体的所有顶点在同一球面上,则球的表面积是_____.14.曲线是平面内到定点和定直线的距离之和等于的点的轨迹,给出下列三个结论:① 曲线关于轴对称;② 若点在曲线上,则;③ 若点在曲线上,则.其中,所有正确结论的序号是____________.三、解答题共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.(本小题满分13分)已知函数.(Ⅰ)求的值;(Ⅱ)若对于任意的,都有,求实数的取值范围.16.(本小题满分14分)如图,直角梯形与等腰直角三角形所在的平面互相垂直.∥,,,.(Ⅰ)求证:;(Ⅱ)求直线与平面所成角的正弦值;(Ⅲ)线段上是否存在点,使// 平面?若存在,求出;若不存在,说明理由.17.(本小题满分13分)甲、乙两人参加某种选拔测试.在备选的道题中,甲答对其中每道题的概率都是,乙能答对其中的道题.规定每次考试都从备选的道题中随机抽出道题进行测试,答对一题加分,答错一题(不答视为答错)减分,至少得分才能入选.(Ⅰ)求乙得分的分布列和数学期望;(Ⅱ)求甲、乙两人中至少有一人入选的概率.18.(本小题满分13分)已知抛物线的焦点为,过点的直线交抛物线于,两点.(Ⅰ)若,求直线的斜率;(Ⅱ)设点在线段上运动,原点关于点的对称点为,求四边形面积的最小值.19.(本小题满分14分)已知函数,其中.(Ⅰ)当时,求曲线在原点处的切线方程;(Ⅱ)求的单调区间;(Ⅲ)若在上存在最大值和最小值,求的取值范围.20.(本小题满分13分)若或,则称为和的一个位排列.对于,将排列记为;将排列记为;依此类推,直至.对于排列和,它们对应位置数字相同的个数减去对应位置数字不同的个数,叫做和的相关值,记作.例如,则,.若,则称为最佳排列.(Ⅰ)写出所有的最佳排列;(Ⅱ)证明:不存在最佳排列;(Ⅲ)若某个是正整数为最佳排列,求排列中的个数.北京市西城区2012年高三二模试卷数学(理科)参考答案及评分标准2012.5一、选择题:本大题共8小题,每小题5分,共40分.1.D; 2.D; 3.B; 4.A; 5.C; 6.C; 7.C; 8.D.二、填空题:本大题共6小题,每小题5分,共30分.9.;10.;11.,;12.,13.,;14.① ② ③.注:11、12、13第一问2分,第二问3分;14题少填不给分.三、解答题:本大题共6小题,共80分.15.(本小题满分13分)(Ⅰ)解:. ………………5分(Ⅱ)解:………………7分………………8分.………………9分因为,所以,………………10分所以当,即时,取得最大值.………………11分所以 , 等价于 .故当 ,时,的取值范围是.………………13分16.(本小题满分14分)(Ⅰ)证明:取中点,连结,.因为,所以.………………1分因为四边形为直角梯形,,,所以四边形为正方形,所以.……………2分所以平面.………………3分所以 . ………………4分(Ⅱ)解:因为平面平面,且,所以平面,所以.由两两垂直,建立如图所示的空间直角坐标系.…………5分因为三角形为等腰直角三角形,所以,设,所以.所以,平面的一个法向量为.………………7分设直线与平面所成的角为,所以,即直线与平面所成角的正弦值为.………………9分(Ⅲ)解:存在点,且时,有// 平面.………………10分证明如下:由,,所以.设平面的法向量为,则有所以 取,得. ………………12分 因为,且平面,所以 // 平面.即点满足时,有// 平面.………………14分17.(本小题满分13分)(Ⅰ)解:设乙答题所得分数为,则的可能取值为.………………1分;;;. ………………5分乙得分的分布列如下:………………6分. ………………7分(Ⅱ)由已知甲、乙至少答对题才能入选,记甲入选为事件,乙入选为事件.则,………………10分. ………………11分故甲乙两人至少有一人入选的概率.……13分18.(本小题满分13分)(Ⅰ)解:依题意,设直线方程为.………………1分将直线的方程与抛物线的方程联立,消去得.…………3分设,,所以,. ① ………………4分因为 ,所以. ② ………………5分联立①和②,消去,得. ………6分所以直线的斜率是. ………………7分(Ⅱ)解:由点与原点关于点对称,得是线段的中点,从而点与点到直线的距离相等,所以四边形的面积等于. ………………9分因为 ………………10分↘↗↘↗↘↗, ………………12分所以 时,四边形的面积最小,最小值是.………………13分19.(本小题满分14分)(Ⅰ)解:当时,,. ………………2分由 , 得曲线在原点处的切线方程是.…………3分(Ⅱ)解:. ………………4分① 当时,.所以在单调递增,在单调递减. ………………5分当,.② 当时,令,得,,与的情况如下:故的单调减区间是,;单调增区间是. ………7分③ 当时,与的情况如下:所以的单调增区间是;单调减区间是,.………………9分(Ⅲ)解:由(Ⅱ)得, 时不合题意. ………………10分当时,由(Ⅱ)得,在单调递增,在单调递减,所以在上存在最大值.设为的零点,易知,且.从而时,;时,.若在上存在最小值,必有,解得.所以时,若在上存在最大值和最小值,的取值范围是.………………12分当时,由(Ⅱ)得,在单调递减,在单调递增,所以在上存在最小值.若在上存在最大值,必有,解得,或.所以时,若在上存在最大值和最小值,的取值范围是.综上,的取值范围是.………………14分20.(本小题满分13分)(Ⅰ)解:最佳排列为,,,,,.………………3分(Ⅱ)证明:设,则,因为 ,所以,,,,之中有个,个.按的顺序研究数码变化,由上述分析可知有次数码不发生改变,有次数码发生了改变.但是经过奇数次数码改变不能回到自身,所以不存在,使得,从而不存在最佳排列.………………7分(Ⅲ)解:由或,得,,……,.因为,所以与每个有个对应位置数码相同,有个对应位置数码不同,因此有,,……,,.以上各式求和得,.………………10分另一方面,还可以这样求和:设中有个,个,则.………………11分所以解得或所以排列中的个数是或.………………13分。

2012西城二模

2012西城二模

北京市西城区2012年高三二模试卷2012.5第二部分:知识运用(共两节,45分)21. I have watched you two for the past ten minutes and ___ of you has done any work in that time.A. neitherB. eitherC. noneD. both22. —Do you think he will send you a card?—Yes, if he _____ on holiday.A. goB. goesC. will goD. went23. What we can learn from the story is _____ you mustn‘t blame children for the mistakes of their parents.A. whereB. whatC. whetherD. that24._____ power, turn off the hot water after you are done showering.A. SaveB. SavingC. SavedD. To save25. Builders use soft wood in the construction of small boats ____ it is flexible.A. afterB. unlessC. becauseD. while26. The baby bird is at the stage ______ it is ready to leave the nest.A. thatB. whichC. whenD. what27.—How long did you own your first car?—We ____ it for six months before it was stolen.A. had ownedB. ownedC. has ownedD. would own28. Tom called customer service to question ______ his credit card bill was so high.A. whetherB. whyC. howD. when29. A person, when ______, can often do what is normally beyond his ability.A. challengedB. challengesC. challengingD. to challenge30. —Did you hear about the hero who rescued the child from the burning building?—Yes. What do you think most people ______ if they were in a similar situation?A. will do B will have done. C. would do D. would have done31. _____ this advertisement several times, I decided to apply for the marketing manager position.A. ReadB. ReadingC. To readD. Having read32. —You may hear some complaining, but you must deal with it.—Yes, I am fully prepared for whatever anyone ______ say.A. canB. mightC. mustD. should33. The meeting began two hours ago and because no decision ______, we will continue our discussion tomorrow.A. has madeB. had madeC. has been madeD. had been made34. Engineering is ________ challenging course of study that requires ________ thorough understanding of mathematicsand science.A. the; aB. a; theC. 不填; 不填D. a; a35. —Can I have your business number?—You can call me, free of charge, ______66887790.A. atB. byC. withD. for第二节完形填空(共20小题;每小题1.5分,共30分)There‘s always been a debate on whether human beings are born good or bad. Depending on how you view the world, you can think of all t he crimes and injustice and conclude that we‘re bad, so we need a system of laws to keep us in check. However, there are also a lot of stories of good deeds. I think we‘re all born good.Today, I took a trip to South Bend to attend my friends‘ wedding rece ption. I had 36 the night before at the forecast and it said we were going to get about 3 inches of snow, so I thought, ―That‘s not so 37 .‖ I set out on my journey and it was completely clear until I 38 to get towards Niles, M1…I was 39 with this ominous (不祥的)cloud. I thought to myself, ―Hmm, this can‘t be a good 40 .‖ Soon enough, the highway became a snow-packed wall of white. I should have remembered that such severe changes in ____41____ are common in this part of America.I then tried to get to the populous area of South Bend and got 42 in the snow, 43 to turn left onto a street. I 44 for 20 minutes to dig myself out with only a scraper(刮刀).It wasn‘t a very 45 street, so I didn‘t see many people. Just as I was starting to give up, a few people stopped by my car and then helped push me out of the snow bank. It was one person at first, and then a few others.Then, on the way to my destination, another lady got stuck. 46 , I got out and was 47 to offer the same help that I had received. At least five others joined me in my 48 to get her car unstuck. It is kind of storm that makes roads undrivable. South Bend 49 up getting over 3 feet of snow.In these 50 of kindness though, I was once again 51 of my belief that that all people are born good. These people didn‘t have to stop and help me out. They ran the 52 of having their own cars stuck. Even for myself, it was a(an) 53 reaction to get out and push the lady‘s car out too. I didn‘t think about it 54 a second.I believe these situations really helped remind me that this world is a good place. Real life situations can 55AIt's still there, the Vietnamese school where my brother and I used to go. Even with a new coat of paint and the high wire fence, the school I knew ten years ago remains the same.Every day at 5 p.m., instead of flying kites with our friends, my brother and I had to go to Vietnamese school. No amount of kicking, screaming, or arguing could stop my mother, who was determined to have us learn the language of our culture. She held us by the collar and walked with us the seven long, hilly blocks from our home to school, leaving our tearful faces before the front of the school.We all sat in little chairs in a big empty room, which had a slight smell of old clothes that had been stored for a long time. I hated that smell. There was a stage far to the right, with an American flag on one side and the flag of the Republic of Vietnam on the other side.Although the school mainly taught language - speaking, reading, dictation - the lessons always began with an exercise in politeness. With the entrance of the teacher, the best student would tap a bell and everyone would get up, and say inVietnamese, "How are you, teacher?"The language always made me embarrassed. More often than not, I had tried to separate myself from the loud voice that followed me whenever I went to the American supermarket outside our area. The voice belonged to my grandmother, a small old woman who could shout louder than anyone on the street. Her Vietnamese was quick, it was loud, it was not beautiful.In our area, the comings and goings of hundreds of Vietnamese on their daily tasks sounded crazy. I did not want to be thought of as being mad, as talking stupid. When I spoke English, people nodded at me, smiled and encouraged me. Even Vietnamese people would laugh and say that I'd do well in life.My brother was even stricter than I about speaking English. He was especially cruel towards my mother, scolding her for her poor English. Bits of Vietnamese were often mixed in her conversation.After two years of struggle, I finally divorced my culture. I was permitted to stop Vietnamese school. I thought of myself as American. At last, I thought I was one of you; I wasn't one of them.Sadly, I am only an American.56.What can be learned from the passage?A.The author‘s brother liked learning Vietnamese.B.The author‘s mother taught him English at home.C.The author didn‘t like learning Vietnamese when he was young.D.The author‘s mother put her sons in a language school in Vietnam.57.The author often felt embarrassed because ________.A.his Vietnamese was not beautiful enoughB.he could not fly kites like other kids at schoolC.his grandma spoke Vietnamese loudly in publicD.his mother always treated him rudely in the market58. It can be inferred from the last paragraph that the author feels ________.A. scaredB. peacefulC. satisfiedD. regretful59. What‘s the theme of the passage?A. It is important to adapt to a new environment.B. It is important to appreciate your own culture.C. It is important to remember your childhood.D. It is important to learn a foreign language.BDear Bobby Brune:Children learn best when they‘re having fun. ―Jungle Gym Jimmy‖ is an article for parents and children that teaches playground safety and shows how simply playing can promote good health and fitness. The tips are given through the funny voice of the ―tour guide‖ on the playground, seven-year-old Jimmy. By listening to Jimmy, children learn how to use the equipment safely and how to get the most fun out of a day on the playground.As a Kid Talk subscriber for the last seven years, I am very familiar with your publication, and feel this article would be a positive addition to the ―I Can Do It‖ section of the magazine. The article is 2,114 words, and has been divided into categories in a way that holds children‘s interest. Being a mother of four children and using our home as a meeting place for most of the neighborhood, I‘ve had the opportunity to test and confirm that the fun and easy ―exercises‖ offered here are not only effective but are los of fun for kids.I‘ve been writing children‘s stories and articles for several years and have had many of my stories published in Kids Know Best, a small newspaper that the Cinder Primary School publishes each month. I‘m also a founding member of the ―Right On Baby‖ editorial group which publishes a monthly e-zine for parents with newborns, and I‘m a contributing editor to ―Write Now,‖ an online site that teaches creative writing.Thank you for your time.Sincerely,Claudia Parker60. The author has written this letter to a ______________.A.magazineB. websiteC. newspaperD. primary school61. By writing the third paragraph, the writer wants to show that she______.A.is experienced in writing articles for childrenB.writes lots of articles about her own childrenC.often reads different stories for her childrenD.is good at designing activities for children.62. The purpose of the letter is to _______________.A.open a new section in a publication for parentsB.start a game to promote good health and fitnessanize a class teaching children how to play safelyD.recommend an article on how to have fun on the playgroundCMovie ExtrasWould you mind lying in a coffin(棺材)? Would you shave your head? Are you willing to take out your false teeth?These are just a few of the questions Anne Marie Stewart and her staff sometimes ask the "talent" who serve as non-speaking "extras" in special films, television series, and made-for-TV movies produced in Toronto.Of course, the majority of extra calls are for more ordinary people, and Stewart has a list of about 650 registered extras. Crowd scenes, which are common, call for everyday people of all ages, ethnic backgrounds, and sizes.Over at Movie People, last-minute requests are not unusual. "We got a request once for an entire brass band of 30 people. They wanted it within the hour," said manager Yvonne McCartney. Another time, the company got a last-minute request for a newborn baby. "We found a baby that was three weeks premature," said Jonathan Aiken, an owner of the company.Then there was the worried call from a casting director whose "Star" got doggone stubborn one day and decided to just lie down and not work. The director needed a replacement dog, fast. "We got them two in one hour." said Aiken. "It was a matter of good connections and fast phone work." The eight phone lines needed to make 350 to 400 calls a day are one of Movie People's major expenses.Phone lines are the only way to stay in touch with casting directors and extras; but the latter are a group not necessarily interested in a long-term relationship. Most extra jobs pay only $7 an hour (with a six-hour minimum), while most agencies charge an annual $75 registration fee and get 10 to 15 per cent of extras‘ earnings. It's no wonder that the turnover rate is fairly high.Some people who are between jobs do extra work as a temporary measure, said McCartney. But professionals, such as lawyers, also do the work because it's interesting. Others with flexible jobs have a desire to do something different. Some homemakers want to get out of the house and onto a movie set. Money's not the motivating reason."One of the first things I say to people who walk in and ask about being an extra is, ‗You have to be available,' "saida person at Karen Clifton Agency. Inc. "The next thing I say is, 'You can't make a living at this.' ‖63. What kind of people are movie extras?A. TV series makers.B. Casting directors.C. Non-professional movie actors.D. Agents for movie stars.64. According to the passage, movie extras should ________.A. have special talentsB. have a flexible scheduleC. make good connectionsD. make hundreds of phone calls daily65. Why do white collar workers most probably like to be movie extras?A.They want to make more money.B.They want to start a career in acting.C.They think their regular job is boring.D.They think being on the stage is enjoyable.66. The underlined word ―turnover‖ in the sixth paragraph probably means ____________.A.business profitB. the loss of staffC. market demandD. operation expensesDIn the face of tragedy(悲剧), you must of course let yourself feel: Cry without holding back, shake with fear, yell out in anger, accept and follow your feelings. This is part of the wise approach to tragedy: The Upward Path –the feeling of emotions(情感), the acceptance of them, and the coupling of the emotional mind with wisdom. Along this path, you‘ll take the experience – no matter how sad or upsetting – as a learning event, just as all other points on your journey will prove to be. While tragic, you must recognize this is still a chance for all involved to grow. You should let both sadness and joy, fear and courage, dark and light fill your world, and learn to find your steady, calm center in the midst of the opposing forces. This is the Upward Path. Use the event as a chance to gain balance and discover wisdom – the wisdom of love and of letting go, of non-attachment and non-resistance, and using this experience to eventually help others in need of guidance.Being able to relate to others who have also experienced tragedy and inspire in them hope –of recovery, and of moving forward – is perhaps the greatest gift you can receive from tragedy. Turn the negative into positive, the pain into connection. After you‘ve taken appropriat e time to be sad, to feel your own pain, you should make it your work, your goal, your purpose to connect with others who need help. Show them how you‘ve experienced feelings, achieved balance, and gained wisdom that you would never have otherwise had the chance to learn.Feel, but do not Feed on tragedy. Rather, let it inspire you to go beyond the person who you were before. With demise comes renewal, so let this loss be also your rebirth. No matter how hopeless it seems, no matter how difficult this becomes, you have the power to transform yourself into someone greater than you ever knew you could be.67. When following the Upward Path, the person facing tragedy should _______.A. free his emotionsB. hold back all his feelingsC. fill his world with positive ideasD. give in to tragedy and all opposing forces68. According to the author, the greatest gift one gets from tragedy is being able to _______.A. seek solutions from othersB. understand and help othersC. stay calm and resist changeD. forgive others and move on69. The underlined word ―demise‖ in the last paragraph probably means _____.A. sorrowB. problemC. difficultyD. death70. The purpose of the passage is to ___________.A. analyze the causes of tragedyB. tell people how to prevent tragedyC. suggest a way of dealing with tragedyD. encourage people to build friendship after tragedy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。

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27.(16分)某小组同学欲探究NH3催化氧化反应,按下图装置进行实验。
A、B装置可选药品:浓氨水、H2O2、蒸馏水、NaOH固体、MnO2
(1)NH3催化氧化的化学方程式是。
(2)装置B中产生气体的原因有(结合化学用语解释)。
(3)甲乙两同学分别按上述装置进行实验。一段时间后,装置G中溶液都变成蓝色。
9.下列实验结论不正确的是
实验操作
现象
结论
A
某有机物与溴的四氯化碳溶液混合
溶液褪色
有机物含碳碳双键
B
乙醇与重铬酸钾(K2Cr2O7)溶液混合
橙色溶液变为绿色
乙醇具有还原性
C
常温下,将二氧化碳通入苯酚钠溶液
溶液变浑浊
酸性:碳酸>苯酚
D
苯和苯酚稀溶液分别与浓溴水混合
后者产生白色沉淀
羟基影响了苯环的活性
10.某无色溶液中若含有大量Na2SO4、Na2CO3、NaOH,为验证其中所含的阴离子,若限定只取一次待测液,加入试剂顺序正确的是
(4)用平衡移动的原理解释步骤⑤中加乳酸能得到乳酸亚铁的原因。
(5)步骤④的离子方程式是。
(6)步骤⑥必须控制一定的真空度,原因是有利于蒸发水以及。
(7)为测定步骤②中所得晶体中FeSO4·7H2O的质量分数,取晶体样品a g,溶于稀硫酸配成100.00 mL溶液,取出20.00 mL溶液,用KMnO4溶液滴定(杂质与KMnO4不反应)。若消耗0.1000 mol•L-1KMnO4溶液20.00 mL,所得晶体中FeSO4·7H2O的质量分数为(用a表示)。
选择题(20个小题每题6分共120分)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
C
D
C
B
B
C
B
D
A
C
A
D
B
D
C
D
A
B
B
C
非选择题(共11题共180分)
化学说明:除已注明外,每空2分,其它合理答案均给分。
25.(12分)
(1)C(s)+H2O(g)=CO(g)+H2(g) ΔH=+131.6 kJ•mol—1
已知:TiOSO4可溶于水,在水中可以电离为TiO2+和SO42—。
请回答:
(1)步骤①中分离硫酸亚铁溶液和滤渣的操作是。
(2)滤渣的主要成分为TiO2•xH2O,写出TiOSO4水解生成TiO2•xH2O的化学方程式。
(3)硫酸亚铁在空气中煅烧生成铁红和三氧化硫,该反应中氧化剂和还原剂的物质的量之比为。
X
Y
Z
W
7.短周期元素X、Y、Z、W在元素周期表中的位置如下图所示,其中W为无机非金属材料的主角,下列说法正确的是
A.W位于第三周期IV族B.Y的气态氢化物分子中含极性共价键
C.X的最高价氧化物的电子式是
D.常温下不能用Z单质制成的容器盛放Y的最高价氧化物对应的水化物的浓溶液
8.下列化学(或离子)方程式不正确的是
北京市西城区2012年高三二模试卷理科综合能力测试2012.5
可能用到的相对原子质量:H1C12 O 16 S 32 K 39 Fe 56 Mn 55
6.下列叙述不正确的是
A.用熟石灰可处理酸性废水B.用丁达尔效应可区分溶液和胶体
C.焊锡(锡铅合金)熔点比金属锡高
D.用CaSO4可降低盐碱地(含Na2CO3、NaCl)土壤的碱性
①甲观察到装置F中有红棕色气体,生成红棕色气体的化学方程式是。
②乙观察到装置F中只有白烟生成,白烟的成分是(写化学式)。
③用离子方程式解释装置G中溶液变成蓝色的原因:。
(4)为帮助乙实现在装置F中也观察到红棕色气体,可在原实验的基础上进行改进。
①甲认为可调节K1和K2控制A、B装置中的产气量,应(填“增加”或“减少”)
A.盐酸、BaCl2、酚酞
B.BaCl2、盐酸、酚酞
C.BaCl2、酚酞、盐酸
D.酚酞、盐酸、BaCl2
11.下列叙述正确的是
A.K与N连接时,X为硫酸,一段时间后溶液的pH增大
B.K与N连接时,X为氯化钠,石墨电极反应:2H++2e—=H2↑
C.K与M连接时,X为硫酸,一段时间后溶液的pH增大
D.K与M连接时,X为氯化钠,石墨电极反应:
物质
T/℃n/mol
T/℃
活性炭
NO
E
F
初始
2.030
0.100
0
0
T1
2.000
0.040
0.030
0.030
T2
2.005
0.050
0.025
0.025
①请结合上表数据,写出NO与活性炭反应的化学方程式。
②上述反应T1℃时的平衡常数为K1,T2℃时的平衡常数为K2。
Ⅰ.计算K1=。
Ⅱ.根据上述信息判断,温度T1和T2的关系是(填序号)__________。
装置A中的产气量,或(填“增加”或“减少”)装置B中的产气量。
②乙认为可在装置E、F间增加一个装置,该装置可以是(填序号)。
(5)为实现该反应,也可用右图所示的装置替换上述
装置中虚线框部分,化合物X为。
NH4HCO3的作用是。
28.(16分)姜黄素具有抗突变和预防肿瘤的作用,其合成路线如下:
已知:
i.1 mol G最多能消耗Na、NaOH、NaHCO3的物质的量分别为3 mol、2 mol、1 mol。
4OH—-4e—=2H2O+O2↑
12.有3种溶液①0.01 mol•L—1醋酸;②0.02 mol•L—1醋酸与0.02 mol•L—1NaOH等体积混合后的溶液;③0.04 mol•L—1醋酸与0.02 mol•L—1NaOH等体积混合后的溶液。下列说法不正确的是
A.3种溶液中pH最小的是①
B.②和③溶液中所含微粒种类相同
C.3种溶液中c(CH3COO—)大小顺序是③>②>①
D.向②中加少量的CH3COONa固体则减小
25.(12分)碳单质在工业上有多种用途。
(1)焦炭可用于制取水煤气。测得12 g碳与水蒸气完全反应生成水煤气时,吸收了131.6 kJ热量。该反应的热化学方程式是。
(2)活性炭可处理大气污染物NO。在2 L密闭容器中加入NO和活性炭(无杂质),生成气体E和F。当温度分别在T1和T2时,1>T2b.T1<T2c.无法比较
③在T1温度下反应达到平衡后,下列措施不能改变NO的转化率的是。
a.增大c(NO) b.增大压强c.升高温度d.移去部分F
(3)工业上可用焦炭冶炼金属。若0.5 mol碳完全与赤铁矿反应,得到0.6 mol铁,同时生成2种常见气体,则该反应的化学方程式是。
26.(14分)利用酸解法制钛白粉产生的废液[含有大量FeSO4、H2SO4和少量Fe2(SO4)3、TiOSO4],生产铁红和补血剂乳酸亚铁。其生产步骤如下:
(2)①C+2NON2+CO2(不写可逆号扣1分)
②Ⅰ.9/16Ⅱ.c
③a b(漏选得1分,错选不得分)
(3)5C+3Fe2O3====4CO2↑+CO↑+6Fe
26.(14分)
(1)过滤
(2)TiOSO4+(x+1)H2O ==TiO2•xH2O↓+H2SO4(写可逆号也得分)
(3)1: 4
(4)FeCO3(s) Fe2+(aq)+CO32-(aq)CO32-与乳酸反应浓度降低,平衡向右移动,使碳酸亚铁溶解得到乳酸亚铁溶液
c.1 mol香兰醛最多能与3 molH2发生加成反应
(5)写出一种符合下列条件的香兰醛的同分异构体的结构简式。
①苯环上的一硝基取代物有2种
②1 mol该物质水解,最多消耗3 molNaOH
(6)姜黄素的分子中有2个甲基,其结构简式是。
(7)可采用电解氧化法由G生产有机物J,则电解时的阳极反应式是。
ii.
iii.
(R1、R2、R3为烃基或氢原子)
请回答:
(1)B→C的反应类型是。
(2)C→D反应的化学方程式是。
(3)E的核磁共振氢谱中有两个峰,E中含有的官能团名称是。
E→G反应的化学方程式是。
(4)下列有关香兰醛的叙述不正确的是。
a.香兰醛能与NaHCO3溶液反应
b.香兰醛能与浓溴水发生取代反应
(5)Fe2++2HCO3—==FeCO3↓+H2O+CO2↑
(6)防止Fe2+被氧化
(7)13.9/a
27.(16分)
(1)4NH3+5O2 4NO+6H2O
(2)在氨水中存在平衡:NH3+ H2O NH3·H2O NH4++ OH—,加入NaOH固体,OH—浓度增加,平衡向左移动,NaOH固体溶于水放出大量热,均有利于NH3逸出
(3)①2NO+O2==2NO2(1分)②NH4NO3(1分)
③3Cu+ 8H++2NO3—=3Cu2++2NO↑+4H2O
(4)①增加(1分)减少(1分)②abc(选2个得1分,选1个不得分)
(5)Na2O2
NH4HCO3分解放出NH3;同时放出的CO2和H2O与Na2O2反应生成O2
28.(16分)
(1)取代反应
(2)HOCH2-CH2OH + O2 OHC-CHO + 2H2O
(3)醛基、羧基(各1分)
(4)ac(漏选得1分,错选不得分)
(5)
(6)
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