河北省衡水中学2019届高三上学期二调考试英语试题2
河北省衡水中学2016届高三上学期第二次调研考试化学试题解析(原卷版)

河北省衡水中学2016届高三上学期第二次调研考试化学试题本试卷分第I卷(选择题)和第Ⅱ卷(非选择题)两部分。
共100分。
考试时间110分钟。
可能用到的原子量:H 1 C 12 N 14 0 16 Na 23 Al 27 S 32 Cl 35.5 K 39 Ca 40V 51 Cr 52 Mn 55 Fe 56 Cu 64 Zn 65 Br 80 Ba 137第I卷(选择题共50分)一、单项选择题(1~10题每小题1分,共10分)1.海水是巨大的资源宝库,下列说法正确的是( )A.碘元素又称“海洋元素”B.镁是海水中含量最多的金属元素C.从海水中提取食盐和碘的过程都是物理变化D.氯碱工业和纯碱工业的原料都有食盐2.合金是指两种或两种以上的金属(或金属与非金属)熔合而成的具有金属特性的物质。
分析下表数据,不能形成合金的是( )A.Cu和Al B.Fe和Na C.Fe和Cu D.Al和Na3.下列说法中不正确的是( )A.在燃煤中加入石灰石可减少SO2排放,发生的反应为2CaCO3 +2SO2 +O△2CO2 +2CaSO4B.C02通入水玻璃可以得到硅酸沉淀C.硅主要以单质、氧化物、硅酸盐的形式存在于自然界中D.氢氟酸能够雕刻玻璃,故不能用玻璃瓶来盛装氢氟酸4.下列关于硫及其化合物的说法中正确的是( )A.自然界中不存在游离态的硫B.二氧化硫的排放会导致光化学烟雾和酸雨的产生C.二氧化硫能使滴有酚酞的氢氧化钠溶液褪色,体现了其漂白性D.浓硫酸可用来干燥S02、CO、Cl2等气体5.下列反应中,反应后固体物质的质量不变的是A .氢气通过灼热的Cu 0粉末B .二氧化碳通过Na 202粉末C .铝与Fe 203发生铝热反应D .将锌粒投入Cu(N03)2溶液6.下列解释物质用途或现象的反应方程式不准确的是A .硫酸型酸雨的形成会涉及反应2H 2SO 3 +O 2催化剂2H 2SO 4B .工业上制取粗硅的化学方程式:SiO 2+C高温Si+CO 2↑ C .Na 2S 203溶液中加入稀硫酸:S 2O 32-+2H +=SO 2+S↓+H 2OD .成分为盐酸的洁厕灵与84消毒液混合使用易中毒:Cl -+ClO -+2H +=Cl 2↑+H 2O7.下列离子方程式的书写正确的是A .水玻璃中通人过量二氧化碳:Na 2SiO 3+CO 2+H 2O =2Na ++CO 32-+H 2SiO 3↓B .Na 202加入H 2180中:2Na 2O 2+2H 218O=4Na ++4OH -+18O 2↑C .硅与氢氟酸的反应:Si+4H ++4F -=SiF 4↑+2H 2↑D .过量C02通入氢氧化钙溶液中:CO 2+OH -=HCO 3-8.在某澄清、透明的浅黄色溶子中的几种,在检验方案设计时初步分析其溶液中最多可含的离子(不包括OH -)有( )A .5种B .6种C .7种D .8种9.室温下,下列各组离子能大量共存的是 ( )A .稀硫酸中:K +、Mg 2+、AlO 2-、S 2O 32-B .Na 2S 溶液中:SO 42-、K +、Cl -、Cu 2+C .K wD .通人大量CO 2的溶液中:Na +、ClO -、CH 3COO -、HCO 3-10.X 、Y 、Z 是中学化学常见的三种有色物质(其组成的元素均属短周期元素),摩尔质量依次增大,它们 均能与水发生氧化还原反应,但水既不是氧化剂也不是还原剂,下列说法正确的是( )A .X 、Y 、Z 中,只有Y 能使湿润的淀粉碘化钾试纸变蓝B .1 mol Y 或Z 与足量水完全反应时,均转移2 mol 电子C .Z 为离子化合物,但含有非极性键,阴、阳离子个数比为1:2D.X和Y均能用向上排空气法和排水法收集二、单项选择题(11~30题每小题2分,共40分)11.下表各组物质中,物质之间不可能实现如图所示转化的是12.用N A表示阿伏加德罗常数的值。
【名师解析】河北省衡水中学2015届高三上学期二调考试数学(文)试题(解析版)

河北省衡水中学2015届高三上学期二调考试数学(文)试题(解析版)【试卷综析】本试卷是高三复习阶段第二次测试文史类数学试卷,目的是对高三第二阶段的复习情况做一个了解。
命题范围是人教A 版必修一、必修四全部,必修五第一章解三角形,第二章数列,选修1-1第三章导数及其应用等内容,是高考复习专题中的函数专题、三角函数专题、数列专题、平面向量专题、导数专题的综合考察。
突出考查考纲要求的基本能力,知识考查注重基础、注重常规,注重知识间的联系及综合运用,选择题的1~9题,填空题中的13~15题,解答题中的17~20题都是基础题,难度不大,其余题目有些难度,兼顾了试卷的区分度问题。
试卷涉及到的基本数学思想有函数与方程、转化与化归、数形结合等。
本试卷分第I 卷(选择题)和第II 卷(非选择题)两部分。
满分150分,考试时间为120分钟。
第I 卷(选择题共60分)一、选择题(每小题5分,共60分.下列每小题所给选项只有一项符合题意.请将正确答案的序号填涂在答题卡上)【题文】1.设a = 30. 5, b = log 32, c=cos 2,则 A.c<b <a B. c <a<b C. a <b <c D. b<c<a 【知识点】指数、对数比较大小;三角函数的符号 B6 B7 C1 【答案解析】A 解析:由指数函数的单调性知:0.50331a =>=, 由对数函数的单调性知:33log 2log 31b =<=,∵2是第二象限角,∴ c=cos 2<0, ∴c<b<a , 故答案为:A【思路点拨】利用指数函数、对数函数及三角函数的性质即可判断大小.【题文】2.设α是第二象限角,P (x,4)为其终边上的一点,且1cos 5x α=,则tan α= A.43B.34C.34-D.43-【知识点】任意角的三角函数的定义 C1【答案解析】B 解析:由题意知:0x <,cos x r rα==故,又1cos5x α=,15x =,解之得:3x =-,4tan 3y x α∴==- 【思路点拨】根据任意角α的余弦的定义和已知条件可得x 的值,再由tan α的定义求得结果。
精品解析:河北省衡水中学2019届高三(上)第一次调研物理试题(原卷和答案版)

河北省衡水中学2019届高三(上)第一次调研物理试题一、选择题1. 物理学的发展极大地丰富了人类对物质世界的认识,推动了科学技术的创新和革命,促进了人类文明的进步,关于物理学中运动与力的发展过程和研究方法的认识,下列说法中正确的是()A. 亚里士多德首先提出了惯性的概念B. 伽利略对自由落体运动研究方法的核心是:把实验和逻辑推理(包括数学演算)结合起来,从而发展了人类的科学思维方式和科学研究方法C. 牛顿三条运动定律是研究动力学问题的基石,牛顿的三条运动定律都能通过现代的实验手段直接验证D. 力的单位“N“是基本单位,加速度的单位“m/s2”是导出单位2. 一质点位于x=﹣1m处,t=0时刻沿x轴正方向做直线运动,其运动的v﹣t图象如图所示.下列说法正确的是()学¥科¥网...学¥科¥网...A. 0~2s内和0~4s内,质点的平均速度相同B. t=4s时,质点在x=2m处C. 第3s内和第4s内,质点位移相同D. 第3s内和第4s内,质点加速度的方向相反3. 如图所示,小球A、B通过一条细绳跨过定滑轮连接,它们都穿在一根竖直杆上.当两球平衡时,连接两球的细绳与水平方向的分别为θ和2θ.假设装置中的各处摩擦均不计,则A、B球的质量之比为()A. 2cosθ:1B. 1:2cosθC. tanθ:1D. 1:2sinθ4. 如图所示,一个半径为R的圆球,其重心不在球心O上,将它置于水平地面上,则平衡时球与地面的接触点为A;若将它置于倾角为30°的粗糙斜面上,则平衡时(静摩擦力足够大)球与斜面的接触点为B.已知AB段弧所对应的圆心角度数为60°,对圆球重心离球心O的距离以下判断正确的是()A. B. C. D.5. 如图所示,光滑的大圆环固定在竖直平面上,圆心为O点,P为环上最高点,轻弹簧的一端固定在P点,另一端栓连一个套在大环上的小球,小球静止在图示位置平衡,则()A. 弹簧可能处于压缩状态B. 大圆环对小球的弹力方向可能指向O点C. 小球受到弹簧的弹力与重力的合力一定指向O点D. 大圆环对小球的弹力大小可能小于球的重力,也可能大于球的重力6. 如图所示,a、b、c三根轻细绳悬挂两个质量相同的小球A、B保持静止,细绳a是水平的,现对B球施加一个水平向有的力F,将B缓缓拉到图中虚线位置,A球保持不动,这时三根细绳张力F a、F b、F c的变化情况是()A. 都变大B. 都不变C. F b不变,F a、F c变大D. F a、F b不变,F c变大7. 半圆柱体P放在粗糙的水平面上,有一挡板MN,其延长线总是过半圆柱体的轴心O,但挡板与半圆柱体不接触,在P和MN之间放有一个光滑均匀的小圆柱体Q(P的截面半径远大于Q的截面半径),整个装置处于静止状态,如图是这个装置的截面图,若用外力使MN绕O点缓慢地逆时针转动,在Q到达最高位置前,发现P始终保持静止,在此过程中,下列说法正确的是()A. MN对Q的弹力大小逐渐减小B. P、Q间的弹力先增大后减小C. 桌面对P的摩擦力先增大后减小D. P所受桌面的支持力保持不变8. 如图所示,n个质量为m的相同木块并列放在水平面上,木块跟水平面间的动摩擦因数为μ,当对1木块施加一个水平向右的推力F时,木块加速运动,木块5对木块4的压力大小为()A. FB.C.D.9. 如图所示,一根弹簧一端固定在左侧竖直墙上,另一端连着A小球,同时水平细线一端连着A球,另一端固定在右侧竖直墙上,弹簧与竖直方向的夹角是60°,A、B两小球分别连在另一根竖直弹簧两端.开始时AB两球都静止不动,A、B两小球的质量相等,重力加速度为g,若不计弹簧质量,在水平细线被剪断瞬间,A、B两球的加速度分别为()A. a A=a B=gB. a A=2g,a B=0C. a A=g,a B=0D. a A=2g,a B=010. 如图所示,质量为M足够长的斜面体始终静止在水平地面上,有一个质量为m的小物块在受到沿斜面向下的力F的作用下,沿斜面匀加速下滑,此过程中斜面体与地面的摩擦力为0.已知重力加速度为g,则下列说法正确的是()A. 斜面体给小物块的作用力大小等于mgB. 斜面体对地面的压力小于(m+M)gC. 若将力F的方向突然改为竖直向下,小物块仍做加速运动D. 若将力F撤掉,小物块将匀速下滑11. 如图所示,A、B两物体的质量分别为2m和m,静止叠放在水平地面上.A、B间的动摩擦因数为μ,B 与地面间的动摩擦因数为μ.最大静摩擦力等于滑动摩擦力,重力加速度为g.现对A施加一水平拉力F,则()A. 当F<2μmg时,A、B都相对地面静止B. 当F=μmg时,A的加速度为μgC. 当F>3μmg时,A相对B滑动D. 无论F为何值,B的加速度不会超过μg12. 如图所示,M为定滑轮,一根细绳跨过M,一端系着物体C,另一端系着一动滑轮N,动滑轮N两侧分别悬挂着A、B两物体,已知B物体的质量为3kg,不计滑轮和绳的质量以及一切摩擦,若C物体的质量为9kg,则关于C物体的状态下列说法正确的是()A. 当A的质量取值合适,C物体有可能处于平衡状态B. 无论A物体的质量是多大,C物体不可能平衡C. 当A的质量足够大时,C物体不可能向上加速运动D. 当A的质量取值合适,C物体可以向上加速也可以向下加速运动13. 如图所示,一劲度系数为k的轻质弹簧,上端固定,下端连一质量为m的物块A,A放在质量也为m的托盘B上,初始时,在竖直向上的力F作用下系统静止,且弹簧处于原长状态.以N表示B对A的作用力,x表示弹簧的伸长量,现改变力F的大小,使B以的加速度匀加速向下运动(g为重力加速度,空气阻力不计),此过程中N或F的大小随x变化的图象正确的是()A. B.C. D.14. 如图甲所示,用粘性材料粘在一起的A、B两物块静止于光滑水平面上,两物块的质量分别为m A=lkg、m B=2kg,当A、B之间产生拉力且大于0.3N时A、B将会分离.t=0时刻开始对物块A施加一水平推力F1,同时对物块B施加同一方向的拉力F2,使A、B从静止开始运动,运动过程中F1、F2方向保持不变,F1、F2的大小随时间变化的规律如图乙所示.则下列关于A、B两物块受力及运动情况的分析,正确的是()A. t=2.0s时刻A、B之间作用力大小为0.6NB. t=2.0s时刻A、B之间作用力为零C. t=2.5s时刻A对B的作用力方向向左D. 从t=0时刻到A、B分离,它们运动的位移为5.4m15. 如图,穿在水平直杆上质量为m的小球开始时静止.现对小球沿杆方向施加恒力F0,垂直于杆方向施加竖直向上的力F,且F的大小始终与小球的速度成正比,即F=kv(图中未标出).已知小球与杆间的动摩擦因数为μ,小球运动过程中未从杆上脱落,且F0>μmg.下列关于运动中的速度﹣时间图象正确的是()A. B. C. D.二、非选择题.16. 现要测量滑块与木板之间的动摩擦因数,实验装置如图1所示.表面粗糙的木板一端固定在水平桌面上,另一端抬起一定高度构成斜面;木板上有一滑块,其后端与穿过打点计时器的纸带相连,打点计时器固定在木板上,连接频率为50Hz的交流电源.接通电源后,从静止释放滑块,滑块带动纸带上打出一系列点迹.(1)图2给出的是实验中获取的一条纸带的一部分:0、1、2、3、4、5、6是实验中选取的计数点,每相邻两计数点间还有4个打点(图中未标出),2、3和5、6计数点间的距离如图2所示.由图中数据求出滑块的加速度a=__m/s2(结果保留三位有效数字).(2)已知木板的长度为l,为了求出滑块与木板间的动摩擦因数,还应测量的物理量是________.A.滑块到达斜面底端的速度v B.滑块的质量mC.滑块的运动时间t D.斜面高度h和底边长度x(3)设重力加速度为g,滑块与木板间的动摩擦因数的表达式μ=__(用所需测量物理量的字母表示)17. 如图所示,放在粗糙的固定斜面上的物块A和悬挂的物体B均处于静止状态.轻绳AO绕过光滑的定滑轮与轻弹簧的右端及轻绳BO的上端连接于O点,轻弹簧中轴线沿水平方向,轻绳的OC段与竖直方向的夹角θ=53°,斜面倾角α=37°,物块A和B的质量分别为m A=5kg,m B=1.5kg,弹簧的劲度系数k=500N/m,(sin37°=0.6,cos37°=0.8,重力加速度g=10m/s2),求:(1)弹簧的伸长量x;(2)物块A受到的摩擦力.18. 如图所示,电动机带动滚轮做逆时针匀速转动,在滚轮的摩擦力作用下,将一金属板从斜面底端A送往上部,已知斜面光滑且足够长,倾角θ=30°,滚轮与金属板的切点B到斜面底端A距离L=6.5m,当金属板的下端运动到切点B处时,立即提起滚轮使它与板脱离接触.已知板的质量m=1kg,滚轮边缘线速度恒为v=4m/s,滚轮对板的正压力F N=20N,滚轮与金属板间的动摩擦因数为μ=0.35,取重力加速度g=10m/s2.求:(1)板加速上升时所受到的滑动摩擦力大小;(2)板加速至与滚轮边缘线速度相同时前进的距离;(3)板匀速上升的时间.19. 在铁路与公路交叉点上,由于司机粗心、判断失误或车况等原因常常造成交通事故.现有一辆长为5m 的汽车以v1=15m/s的速度行驶,在离铁路与公路交叉点175m处,汽车司机突然发现离交叉点200m处有一列长300m的列车以v2=20m/s的速度行驶过来,为了避免事故的发生,汽车司机如果立刻刹车作匀减车运动,则最小加速度为多少?汽车司机如果立刻作匀加速运动,则最小加速度应多大?20. 如图所示,质量M=10kg、上表面光滑的足够长的木板在F=50N的水平拉力作用下,以初速度v0=5m/s 沿水平地面向右匀速运动.现有足够多的小铁块,它们的质量均为m=1kg,将一铁块无初速地放在木板的最右端,当木板运动了L=1m时,又无初速度地在木板的最右端放上第2块铁块,只要木板运动了L就在木板的最右端无初速度放一铁块.(取g=10m/s2)试问:(1)木板与地面之间的滑动摩擦系数多大?(2)第1块铁块放上后,木板运动了L时,木板的速度多大?(3)最终木板上放有多少块铁块?河北省衡水中学2019届高三(上)第一次调研物理试题一、选择题1. 物理学的发展极大地丰富了人类对物质世界的认识,推动了科学技术的创新和革命,促进了人类文明的进步,关于物理学中运动与力的发展过程和研究方法的认识,下列说法中正确的是()A. 亚里士多德首先提出了惯性的概念B. 伽利略对自由落体运动研究方法的核心是:把实验和逻辑推理(包括数学演算)结合起来,从而发展了人类的科学思维方式和科学研究方法C. 牛顿三条运动定律是研究动力学问题的基石,牛顿的三条运动定律都能通过现代的实验手段直接验证D. 力的单位“N“是基本单位,加速度的单位“m/s2”是导出单位【答案】B【解析】牛顿首先提出了惯性的概念,选项A错误;伽利略对自由落体运动研究方法的核心是:把实验和逻辑推理(包括数学演算)结合起来,从而发展了人类的科学思维方式和科学研究方法,选项B正确;牛顿三条运动定律是研究动力学问题的基石,牛顿第一定律步能通过现代的实验手段直接验证,选项C错误;力的单位“N”和加速度的单位“m/s2”都是导出单位,选项D正确;故选B.2. 一质点位于x=﹣1m处,t=0时刻沿x轴正方向做直线运动,其运动的v﹣t图象如图所示.下列说法正确的是()A. 0~2s内和0~4s内,质点的平均速度相同B. t=4s时,质点在x=2m处C. 第3s内和第4s内,质点位移相同D. 第3s内和第4s内,质点加速度的方向相反【答案】B【解析】根据图象与坐标轴围成的面积表示位移,在时间轴上方的位移为正,下方的面积表示位移为负,则知0~2s内和0~4s内,质点的位移相同,但所用时间不同,则平均速度不同,故A错误.0-2s内质点的位移为△x=×(1+2)×2m=3m,2-4s内位移为零,则t=4s时质点的位移是3m,t=0时质点位于x=-1m处,则t=2s时,质点在x′=x+△x=2m处,故B正确.第3s内和第4s内,质点位移大小相同,但方向不同,选项C错误;速度图线的斜率表示加速度,直线的斜率一定,加速度是一定的,则知第3s内和第4s 内,质点加速度的方向相同,故D错误.故选B.点睛:本题是速度图象问题,考查理解物理图象意义的能力,关键要抓住速度图象“斜率”表示加速度,“面积”表示位移.3. 如图所示,小球A、B通过一条细绳跨过定滑轮连接,它们都穿在一根竖直杆上.当两球平衡时,连接两球的细绳与水平方向的分别为θ和2θ.假设装置中的各处摩擦均不计,则A、B球的质量之比为()A. 2cosθ:1B. 1:2cosθC. tanθ:1D. 1:2sinθ【答案】B【解析】分别对AB两球分析,运用合成法,如图:由几何知识得:T sinθ=m A g,T sin2θ=m B g,故m A:m B=sinθ:sin2θ=1:2cosθ,故选B.【点睛】本题考查了隔离法对两个物体的受力分析,关键是抓住同一根绳子上的拉力处处相等结合几何关系将两个小球的重力联系起来.4. 如图所示,一个半径为R的圆球,其重心不在球心O上,将它置于水平地面上,则平衡时球与地面的接触点为A;若将它置于倾角为30°的粗糙斜面上,则平衡时(静摩擦力足够大)球与斜面的接触点为B.已知AB段弧所对应的圆心角度数为60°,对圆球重心离球心O的距离以下判断正确的是()A. B. C. D.【答案】D【解析】将球置于水平地面上,球受重力和支持力,二力平衡,故重力的作用点在OA连线上,将球放在斜面上,以B为支点,根据力矩平衡条件,合力矩为零,故重力的力矩一定为零,故重心也在过B的竖直线上,一定是该线与OA的交点,如图所示:,故选项D正确。
河北省衡水中学2023届高三上学期三调考试数学试卷及答案

数 学本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。
共4页,总分150分,考试时间120分钟。
第Ⅰ卷(选择题 共60分)一、选择题:本题共8小题,每小题5分,共40分。
在每小题给出的四个选项中,只有一项是符合题目要求的。
1.已知集合==−M x y x {|ln(1)},集合==∈xN y y e x R {|,}(e 为自然对数的底数),则 M N = A .x x <{|1}B .x x >{|1}C .x x <<{|01}D .x x >{|0}2.已知角α的终边与单位圆交于点13,223−⎛⎝ ⎫⎭⎪⎪,则cos2α= A .-1B .−79C .−49D .793.若曲线()ln =−f x a x bx在点f (1,(1))处的切线的斜率为1,则+a b 22的最小值为 A .12B .22C .32D .344.将函数=sin 2y x 的图象向右平移ϕϕ>(0)个单位长度后,得到函数y x πcos 26=+⎛⎝⎫⎭⎪ 的图象,则ϕ的值可以是 A .π12B .π6C .π3D .π235.已知函数f x x =+><<ωϕωϕπ()sin(2)(0,0)的部分图象如图所示,则下列结论正确的是A .f x ()的最小正周期为π56B .f x ()的图象关于点π3,0−⎛⎝ ⎫⎭⎪对称 C .f x ()在区间π0,2⎡⎣⎢⎤⎦⎥上的最小值为−32 D .f x ()的图象关于直线x =−π56对称 6.若函数f x x ωωω=−>()|tan()|(0)的最小正周期为4,则在下列区间中f x ()单调递增 的是河北省衡水中学2023届上学期高三年级三调考试A .⎪⎭⎫ ⎝⎛−31,1B .⎪⎭⎫ ⎝⎛35,31C .⎪⎭⎫ ⎝⎛3,35D .)4,3(7.圭表(如图①)是我国古代一种通过测量正午日影长度来推断节气的天文仪器,它包括一根直立的标竿(称为“表”)和一把呈南北方向水平固定摆放的与标竿垂直的长尺(称为“圭”).当太阳在正午时刻照射在表上时,日影便会投影在圭面上,圭面上日影长度最长的那一天定为冬至,日影长度最短的那一天定为夏至.图②是一个根据某地的地理位置设计的圭表的示意图,已知该地冬至正午时太阳高度角(即)ABC ∠大约为15°,夏至正午时太阳高度角(即)ADC ∠大约为60°,圭面上冬至线与夏至线之间的距离(即BD 的长)为a ,则表高(即AC 的长)为A .a )32(−B .a 433− C .a 413− D .a 433+ 8.已知不等式0)(>x f 的解集为A ,若A 中只有唯一整数,则称A 为“和谐解集”,若关于x 的不等式|cos sin |2cos sin x x mx x x −+>+在区间),0(π上存在“和谐解集”,则实数m 的可能取值为 A .32cos 2 B .23 C .32cosD .1cos二、选择题:本题共4小题,每小题5分,共20分。
河北省衡水中学2017届高三上学期第二次调研考试化学试题解析(解析版)

1.下列实验室制取物质的思路既合理又符合绿色化学思想的是( )【答案】B【解析】【考点定位】考查实验设计方案的评价、绿色化学等知识。
【名师点睛】本题考查实验设计方案的评价,制备实验方案的设计要做到:条件合适,操作方便,原理正确,步骤简单,原料丰富,价格低廉,产物纯净,污染物少等;铜和浓硫酸反应生成SO 2,SO 2引起酸雨的主要的原因,不符合绿色化学;氢氧化铝表现两性,偏铝酸钠和硫酸反应,如果硫酸过量,会造成氢氧化铝溶解,造成氢氧化铝的损失;钠的价格昂贵,碳酸钠价格低廉,工业一般采用CO 2+NH 3+H 2O +NaCl=NaHCO 3↓+NH 4Cl ,2NaHCO 3=====△ Na 2CO 3+CO 2↑+H 2O ,此题比较简单。
2.下列说法正确的是 ( )A .有些活泼金属如铝可用作热还原法的还原剂B .用电解NaCl 溶液的方法来冶炼金属钠C .用加热分解氧化物的办法制取铜D .使元素由化合态转化成游离态的过程就是还原的过程【答案】A【解析】试题分析:A 、因为铝具有强还原性,可以利用还原性强的制取还原性弱的,故正确;B 、电解食盐水:2NaCl +2H 2O =点燃 =======通电 =======电解 ========催化剂△2NaOH +H 2↑+Cl 2↑,故错误;C 、工业上冶炼铜,通过热还原法,也可以通过火法炼铜和湿法炼铜,故错误;D 、F 2+2H 2O=4HF +O 2,氧元素有-2价→0,化合价升高,被氧化,故错误。
【考点定位】考查金属的冶炼、氧化还原反应等知识。
【名师点睛】考查金属的冶炼,金属冶炼一般方法:(1)电解法,适用于K~Al,(2)热还原法,适用于Zn~Cu,常用还原剂有H2、CO、C、活泼金属,(3)热分解法:适用于Cu以后金属,(4)特殊方法,如铜的冶炼还有湿法炼铜和火法炼铜;化合态转变为游离态,此反应可以是氧化反应,如F2+2H2O=4HF +O2,也可以是还原反应,如H2+CuO=H2O+Cu,此题较为简单。
新高考河北省衡水中学2021届高三英语上学期第四次调研试题含解析

For the first time, humans drove a car on the Moon. The first of the Apollo “J” Missions-designed for longer stays on the Moon - the mission carried a lunar rover, which Commander David Scott and Lunar Module Pilot James Irwin used while they were on the surface for more than I8 hours. They traveled more than 17 miles in the rover, setting up experiments and collecting 170 pounds of samples. Before leaving the lunar surface, Scott conducted an experiment to test Galileo’s theory that objects in vacuum, without air resistance, would fall at the same rate. He dropped a geological hammer and a feather, which hit the ground at the same time, proving Galileo right.(Launch: July 26, 1971, lunar landing: July 30: splashdown: Aug. 7)
A. Very worried. B. Quite surprised. C. little embarrassed.
河北省衡水中学2021届上学期高三年级二调考试地理含答案

河北省衡⽔中学2021届上学期⾼三年级⼆调考试地理含答案河北省衡⽔中学2021届上学期⾼三年级⼆调考试地理本试卷分第I卷(选择题)和第Ⅱ卷(⾮选择题)两部分。
共8页,总分100分,考试时间90分钟。
第Ⅰ卷(选择题共45分)⼀.选择题;本题共30⼩题,每⼩题1. 5分,共45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。
2020年6⽉21⽇(夏⾄),我国迎来⼗年⼀遇的天象奇观⼀⼀⽇环⾷。
下图展⽰的是此次⽇环⾷带在世界范固穿过的地区。
读图,完成1~2题。
1. 图中A. 甲地树⽊稀疏,草原⼴布B. ⼄地近海海城,⽯油储量⼤C. 丙地位于板块交界处,⽕⼭频发D. 丁地河⽹密布,河流含沙量较⼤2. 该⽇,⽇环⾷带沿线地区A. 西侧⽐东侧先看到⽇出B. ⽇出东南,⽇落西南C. 正午太阳⾼度全年最⼤D. ⽩昼最长,⿊夜最短上海某中学地理⼩组计划利⽤署假进⾏野外考察。
下图为四个考察⼩组规划的四条线路。
读图,完成3~5题。
3. 考察线路中,经过不同⼲湿地区最多的是A. ①B. ②C. ③D. ④4,在①考察线路的终点,能观察到的⾃然植被类型是A,常绿阔叶林B. 温带草原C. 针阔混交林D. 荒漠植被5. ④考察线路中,发现了⼤量的马尾松、茶树等植物,该类植物分布区A. 降⽔稀少B. 光照强烈C. 阴冷潮湿D. 酸性⼟壤科隆群岛⼜称加拉帕⼽斯群岛,⾪属厄⽠多尔,群岛多⽕⼭岩。
科隆群島位于⾚道地区,但该群岛上却⽣活着很多企鹔、海約等寰带⽣物。
读图,完成6~7题6. 与科隆群岛⽕⼭岩形成密切相关的地质作⽤是A. 海浪沉积B. 岩浆活动C. 变质作⽤D. 风化侵蚀7. 科隆群岛上⽣活着很多企鹅、海豹等寒带⽣物,主要影响因素是A. 植物B. ⼤⽓环流C. 地形D. 洋流长江⼝是⼀个丰⽔、多沙、中等潮汐强度的河⼝湾,在河流与海洋相互作⽤下,形成了崇明等⼀系列岛屿。
下图是长江河⼝⽰意图,图中的涨落湖优势转换界是河流径流和海洋潮流动⼒的平衡地带,在近底层涨落潮流相抵后净流速等于雰的地⽅。
河北省衡水中学2018届高三年级七调考试【原卷打印版】

河北省衡水中学2018届高三上学期七调考试语文试题2018年3月30日第Ⅰ卷阅读题一、现代文阅读(35分)(一)论述类文本阅读(9分,每小题3分)技术也可以“诗意盎然”刘根生①一位新锐设计师受梵高名画《星空》的启发,设计出一条“夜光自行车道”,路面上镶嵌着成千上万颗发着蓝绿色激光的小石头,如同银河洒落人间,令人叫绝。
设计师认为,技术不应是坚硬麻木的存在,而应“以一种更具交互性和诗意的方式强化我们的感受能力”。
②的确,技术并不只具有实用价值,亦可以是审美价值的摇篮。
中国的陶瓷闻名遐迩,丝绸远销世界,古代建筑令人陶醉,皆因实用价值与审美价值相得益彰。
技术满足人的物质需要,艺术满足人的精神需要,技术与诗意融合,更能熏染出高品质的生活。
当我们向科技的诗意一面投去更多关注,就不难发现,技术也可以充满温度和情怀,饱含灵性和魅力。
③国内外的一些城市中,涌现出一种叫作“垂直森林”的新式建筑,层层种下乔木、灌木和草本植物,让绿植充满建筑空间。
传统观念里,城市的钢筋水泥风格同绿色自然格格不入。
“垂直森林”的建筑设计却成功地让人与自然超越空间局限融合在一起,为“诗意的栖居”创造了无限可能。
④科学同样要有美感,技术创新也能很诗意。
如果把科技比作繁茂的大树,效率和性能是其树干,人文要素则近乎树枝和树叶。
没有树干,枝叶无所依存;剥掉树皮,去除叶子,树干不过是根木头。
科技不能只有理性思维、缺少“诗性思维”,否则就难免枯燥无趣。
以城市规划来说,许多城市的新城区道路、公共广场都唯宽大是从,不仅不讲科学,实际上也诗意无存,既浪费也没有特色。
⑤“技术的诗意”,其实不是铺陈、夸张、搞怪,而是“得天之道,其事若自然”。
如同庖丁解牛,始终按照其结构特征用刀,在顺应自然、求至善中尽显智慧和技艺。
其中凝聚着“真”——尊重规律、以道驭术;凝聚着“善”——简约利物、惠而不费;凝聚着“美”——巧夺天工、出神入化。
多些“技术的诗意”,实质正是遵守技术伦理,把创意和人文有机融合,用“人的尺度”统摄技术,给人更多便利的感受和美的体验。
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2018-2019学年度上学期高三年级二调考试英语试卷命题人:张炳霞本试卷共150分,考试时间120分钟。
第一部分听力(共两节,满分20分)第一节(共5小题;每小题1分,满分5分)听下面5段对话。
每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项。
听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1. How many days does the man work overtime continuously?A. Five.B. Six.C. Seven.2. What does the man want the woman to know?A. His class is difficult to pass.B. Her program is very serious.C. About 30% students in his class will fail.3. How does the man feel about doing yoga?A. Excited.B. Relaxed.C. Anxious.4. What does the woman suggest the man do?A. Turn up the gas in the fireplace.B. Get some more wood from outside.C. Let the wood burn a bit more.5. What is the relationship between the speakers?A. Author and journalist.B. Publisher and reader.C. Writer and publisher.第二节(共15小题;每小题1分,满分15分)听下面5段对话或独白。
每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项。
听每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。
每段对话或独白读两遍。
听第6段材料,回答第6、7题。
6. What does the man tell the woman?A. He just got a raise.B. He can’t skip his meeting.C. He’ll call the moving company tonight.7. When will the man probably be home?A. At ten o’clock.B. Around seven o’clock.C. By five o’clock.听第7段材料,回答第8、9题。
8. What does the man intend to do at first?A. Insure his car.B. Service his car.C. Get a license.9. Where will the man go next?A. To his local insurance provider.B. To a vehicle service center.C. To the car factory.10. Where does the conversation take place?A. At a party.B. In a lecture hall.C. At a coffee shop.11. Which course does the man like best?A. Mixed Materials.B. Advanced Drawing.C. Use of Color and Media.12. What will the speakers do next week?A. Meet some friends together.B. Show each other their designs.C. Meet at a bar to discuss design.听第9段材料,回答第13至16题。
13. What does the woman say about Hotel Cleopatra?A. It is the most beautiful hotel in the world.B. It was built by Queen Cleopatra.C. It is near the beach.14. Which place is being repaired now?A. The Great Pyramid.B. The Suez Canal.C. Cairo Railway Station.15. What is the average depth of the Suez Canal?A. About 200 meters.B. About 193 meters.C. About 24 meters.16. Who might the woman be?A. A guide.B. A waitress.C. A receptionist.17. What is the talk mainly about?A. A history of electronics.B. Hearing loss caused by loud music.C. Different ways to listen to music.18. How many students involved in the study probably set no limit on their listening time?A. Over 150.B. About 120.C. Around 300.19. Who was asked about their use of music players?A. Only students.B. Only adults.C. Both students and adults.20. What do studies show about hearing loss?A. It happens very quickly.B. It will last throughout your life.C. It is caused by noise below level 90.第二部分阅读理解(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的A、B、C和D四个选项中,选出最佳选项。
AThe annual World Economic Forum (经济论坛) took place in Davos, Switzerland, in Jan. 23-26, 2018. What did Chinese entrepreneurs (企业家) speak in the forum? Are there some quotable quotes for you?★Jack Ma, founder and executive chairman of Alibaba Group“I think globalization cannot be stopped — no one can stop globalization, no one can stop trade. If trade stops, the world stops. Trade is the way to dissolve (溶解,结束) the war not cause the war,” said Ma in Davos, “Googl e, Facebook, Amazon and Alibaba — we are the luckiest companies of this century. But we have the responsibility to have a good heart, and do something good.”★Richard Liu, founder and chief executive officer of JD“Business is n ot only a way to make money but also a way to contribute yourself, to help pe ople,” Liu said in a speech in Davos. “How can we face th e fractured (分化的) world? That’s t he topics of the Davos this year. I think a very important thing in business is cooperation. If we can unite, work together, if we work very closely, I think we can bring more hope to the people and we can build more trust between the people, countries and companies and partner s,” he said.★Jane Sun, CEO of Ctrip“Tourism is a sunrise industry. Since I entered Ctrip, every year there are new comers, which, first of all, shows that tourism is booming.” Sun told in Davos. “We invested heavily in ABC. A ref ers to AI, B is big data, and C is cloud computing. As we continue to expand overseas, these three will be very good weapons for us. So we think those mean opportunity,” she said.★Hu Xiaoming, president of Aliyun“In 2018, peopl e will see the development in various countries more closely connected with cloud computing. More manufacturing enterprises and financialinstitutions wil l start to use ‘cloud’, and cloud compu ting will increase the efficiency of technology and fin ance,” Hu told Xinhua in Davos.1. What do Chinese entrepreneurs like Jack Ma and Richard Liu focus more on?A. More huge jumps in profits.B. The joined efforts of mankind.C. Reducing production costs.D. The role of science in business.2. What is the main business of Ctrip?A. Tourism.B. The creation of AI.C. Computer.D. Financial service online.3. What does Hu think will promote global economic development?A. Economy recovery.B. The World Economic Forum.C. Cloud computing.D. Financial efficiency.BIf you want to convince the boss you deserve a pay rise or promotion, the solution could be simple — eat the same food as they do. Psychologists have discovered managers are much more likely to instantly trust us if we choose the same dishes as them.During experiments, discussions over wages and work conditions were much more successful if both sides chose to snack on the same treats. And shoppers were much more likely to buy a product advertised on TV by someone eating a similar food to them at the time.The reason is thought to be so-called similarity attraction theory — where people tend to like others who have similar tastes or habits to themselves. But this is believed to be one of the first studies highlighting the role of food in this relationship. Researchers at Chicago University in the US conducted a series of experiments to examine food’s role i n earning trust.In a test, participants were told to watch TV — where someone pretending to be a member of the public praised a certain product. The volunteers were given Kit Kat bars to nibble (咬), while the TV people ate either a Kit Kat or grapes as they talked.The results showed viewers were much more likely to express an interest in buying the product if the TV showed the other person eating a Kit Kat too.The researchers add ed, “Although similarity in food consumption is not a sign of whether two people will get along, we find consumers treat this as such. They feel more trusting of those who consume as they do. It means people can immediately begin to feel friendship and develop a bond, leading to smoother transactions (交易) from the start.”Harley Street psychologist Dr. Lucy Atcheson said it was already known that wearing similar clothes could instantly create trust. But this was the first report that food h ad the same effect. She said, “This i s really interesting. It makes sense as peoplefeel they have common ground and can trust the other person. That means negotiations are more likely to be succe ssful.”4. According to the passage, customers are likely to buy a product from a dealer who ______.A. has the same taste as themB. advertises his products on TVC. reduces the price of his productsD. pays attention to the quality of his products5. The experiments conducted by researchers at Chicago University show that ______.A. food plays an important role in earning pe ople’s trustB. bosses like employees that have the same taste as themC. people who h ave similar tastes to their boss’s ea rn moreD. people have less interest in buying products advertised on TV6. What can be inferred from the passage?A. People who eat similar food are more likely to trust each other.B. People will get along with each other if they like to eat similar things.C. The effect of wearing similar clo thes hasn’t been proved by researchers.D. People are more likely to make friends with those wearing the same clothes as them.7. Which of the following sayings can be an example of the similarity attraction theory?A. Honesty is the best policy.B. All good things come to an end.C. Birds of a feather flock together.D. Where there is a will, there is a way.C“Tomorrow is another day” — this line has impressed various people at various times. It’s now 70 years after it appeared in the film, but it still seems to hold its power especially during an economic downturn.The phrase comes from a film adaptation of Margar et Mitchell’s successful 1936 novel Gone With the Wind. It’s set in t he American South and tells the story of a strong her oine, Scarlett O’ Hara, who stru ggles to find love during the Civil War and, afterwards, of her strength in surviving the war and its hardships.Love storyIn a moment of despair, Scarlett finally realizes that her love belongs to Rhett Butler. For many audiences, it is the theme of love and struggle that has kept the movie alive. While the burning of Atlanta might seem irrelevant (不相关的) to today’s viewers, the timeless theme of love keeps its ability to touch people.With a promise to her lover still in her mind, Scarlett chooses to stay in the midst of war and take care of Melanie. But her heart is broken when Rhett just walks away, leaving the woman that he once loved with c ruel words, “Frankly, dear, I don’t give a damn.” (毫不在乎)Great epic (史诗)The film shows the love-hate relationship of these characters, but also Americanhistory, the fall of the Confederacy and the following period of Reconstruction in the South. The background made this film a true classic in the epic genre.When the film opened after World War II, French viewers loved it, and it reminded them of their fight against the Nazis. In 1940 Shanghai, during the War of Resistance Against Japanese Aggression (侵略), people stood in line for hours to watch this film, and saw the same suffering they were having as well as the hope and possibility of building a new homeland from the ruins. Each nationality could identify with the story and see it as a victory. In fact, Gone With the Wind never lost its charm and ability to inspire and amaze.Biggest of all timeThe film had five directors, 15-plus screenwriters, and an unexpected $3.9 million budget. The film brought in $200 million, which makes it the biggest selling film of all times in North America. It also won 10 Academy awards in 1940.8. The underlined word “it” in the first p aragraph refers to ______.A. the novel Gone with the WindB. “tomorrow is another day”C. the movie Gone with the WindD. the Academy Award9. The text is written mainly to ______.A. celebrate the anniversary of Margaret MitchellB. introduce how the film was directed and filmedC. throw light on (阐述) the charm of the movi e “Gone with the Wind”D. inspire people to struggle the economic downturn10. It can be conclude d that Scarlett O’ Hara is ______.A. optimistic and luckyB. childish and realisticC. caring and stubbornD. strong-minded and persistent (坚毅的)11. The passage mentions Shanghai in order to ______.A. prove that the background of the movie touched viewersB. describe how popular the movie was at that timeC. point out that Shanghai was a center of entertainmentD. tell us that Chinese were suffering the War thenDWhat Cocktail Parties Teach UsYou’re at a p arty. Music is playing. Glasses are clinking. Dozens of conversations are driving up the decibel (分贝) level. Yet among all those distractions, you can tune your attention to just one voice from many. This ability is what researchers call the “cocktail-party effect”.Scientists at the University of California in San Francisco have found where that sound-editing process occurs in the brain — in the auditory cortex (听觉皮层) just behind the ear, not in areas of higher thought. The auditory cortex boosts some sounds and turns down others so that when the signal reaches the hi gher brain, “it’s as if on ly one person was speaking alone,” says investigator Edward Chang.These findings, published in the journal Nature last week, explain why people aren’t very good at mul titasking — our brains a re wired for “selective attention” and can focus on only one thing at a time. That inborn ability has helpedhumans survive in a world buzzing with visual and auditory stimulation (刺激). But we keep trying to push the limits with multitasking, sometimes with tragic (悲剧的) consequences. Drivers talking on cellphones, for example, are four times as likely to get into traffic ac cidents as those who aren’t.Many of t hose accidents are due to “inattentional blindness”, in w hich people can, in effect, turn a blind eye to things they aren’t focusing on. The more attention a task demands, the less attention we can pay to other things in our field of vision. Images land on our retinas (视网膜) and are either boosted or played down in the visual cortex before being passed to the brain, just as the auditory cortex filters sounds, as shown in the Nature study la st week. “It’s a push-pull relationship — the more we focus on one thing, the less we can focus on o thers,” says Diane M. Beck, an associate professorof psychology at the University of Illinois.Studies over the past decade at the University of Utah show that drivers talking on hands-free cellphones are just as influenced as those on hands-held phones because it is the conversation, not the device, that is distracting their attention. Those talking on any kind of cellphone react more slowly and miss more traffic signals than other motorists.Some people can train themselves to pay extra attention to things that are important — like police officers learn to scan crowds for faces and conductors canlisten for individual instruments within the orchestra as a whole. Many more think they can effectively multitask, but are actually shifting their attention rapidly between two things and not getting the full effect of either, experts say.12. What have scientists in University of California found about “the cocktail-party effect”?A. Usually there is only one person who is speaking alone.B. All kinds of annoying sounds drive up the decibel level.C. The higher brain processes sounds and images selectively.D. Sounds are sorted out before reaching the higher brain.13. What do we learn from the passage?A. We are biologically incapable of multitasking.B. We survive distractions in life by multitasking.C. We cannot multitask without extra attention.D. We benefit from pushing the limit with multitasking.14. Which of the follo wing is an example of “inattentional blindness”?A. A careless driver lost his eyesight after a car accident.B. Police scanned the crowds and located the criminal.C. A manager talked on a hands-free phone with his client.D. A pedestrian had a car accident because of phubbing (低头).15. The main purpose of the passage is to ______.A. compare and contrastB. inform and explainC. argue and discussD. examine and evaluate第二节(共5小题;每小题2分,满分10分)根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,选项中有两项为多余选项。