江苏省盐城市建湖县汇文实验初中教育集团汇杰校区2020-2021学年九年级下学期能力竞赛数学试题
江苏省盐城市建湖县汇文实验初中2020届九年级春学期内部中考模拟试卷
建湖县汇文实验初中2020年中考模拟考试九年级物理试卷分值：100分时间：90分钟一、选择题（每题2分，计24分）1、关于原子核和核能，下列说法正确的是（）A、原子核是由电子、质子和中子组成B、核能的使用不会对人类产生危害C、现有核电站利用核裂变释放的能量来发电D、氢弹爆炸时的链式反应是可控的2、下列对一些数据的估测，最接近实际的是（）A、课桌的高度约为800cmB、青岛夏季的最高气温约为50℃C、中学生100m跑的平均速度约为15m/sD、将20个鸡蛋从一楼提至二楼，对鸡蛋做的功约为30J3、中国高铁、移动支付、共享单车、鲲龙AG600水陆两栖飞机……当今中国，科技进步使生活更精彩.下列说法正确的是（）A、“复兴”号高速列车因为速度很大所以惯性很大B、鲲龙AG600水陆两栖飞机在高空所受的大气压强，比水面附近的大气压强大C、使用共享单车时，用手机扫描二维码开锁，二维码位于手机摄像头的一倍焦距以内D、用手机进行移动支付时，是利用电磁波传递信息的4、图甲为探究冰熔化特点的实验装置，图乙为观察“碘锤”中的物态变化实验装置.已知标准大气压下，冰和碘的熔点分别是0℃和113.5℃.对比两实验有以下判断：（1）冰和碘都经历了固态变为液态的过程；（2）冰和碘在物态变化过程中都需要吸收热量.这两个判断（）A、只有（1）正确B、只有（2）正确C、都正确D、都错误第4题第5题第6题5、将一蜡烛放在装有水的烧瓶前，调整蜡烛和烧瓶至如图所示位置，在墙壁上得到清晰的像.该像的性质是（）A、缩小的虚像B、放大的虚像C、缩小的实像D、放大的实像6、教室里，带磁性的粉笔刷可吸在黑板上不掉下来，如图所示．关于粉笔刷的受力情况，下列说法正确的是( )A．粉笔刷所受磁力与粉笔刷所受重力是一对平衡力B．粉笔刷所受磁力与黑板对粉笔刷的支持力是一对平衡力C．粉笔刷对黑板的摩擦力的方向竖直向上D．粉笔刷受到摩擦力作用与粉笔刷所受重力是一对相互作用力7、如图所示，水平桌面上放着底面积相等的甲、乙两容器，分别装有同种液体且深度相同，两容器底部所受液体的压力、压强分别用F甲、F乙、p甲、p乙表示，则（）A、F甲=F乙，p甲=p乙B、F甲=F乙，P甲>P乙C、F甲>F乙，p甲=p乙D、F甲>F乙，p甲>p乙第7题第8题第10题8、如图所示，电源电压保持不变，R1为定值电阻，闭合开关S，将滑动变阻器R2的滑片P从最右端向中点移动，下列说法正确的是（）A、电压表V1与电压表V2示数始终相等B、电流表A示数变大，电压表V2示数变小C、电压表V1示数与电流表A示数之比变小D、电压表V1示数与电流表A示数之比不变9、甲、乙两个小灯泡上分别标有“6V 3W”和“4V 2W”字样，现在把它们按不同方式接在不同电路中（不考虑灯丝电阻的变化），下列判断错误的是（）A、若把它们并联在4V电路中，乙灯正常发光B、若把它们并联在4V电路中，甲灯比乙灯亮C、若把它们串联在10V电路中，两灯都可以正常发光D、若把它们串联在10V电路中，甲灯比乙灯亮10、如图所示，两个透明容器中密闭着等量的空气，A、B两U形管内的液面相平，电阻丝的电阻R1=R2=R3.小明用图示装置进行实验，探究电流通过导体时产生的热量Q跟什么因素有关.下列说法正确的是（）A、此实验在探究电热Q与电阻R是否有关B、通过R1的电流和通过R2的电流大小相等C、电阻R1两端的电压和R2两端的电压相等D、通电后，A管的液面将会比B管的液面高11、如图是小轩家的部分电路.下列说法正确的是（）A、若熔断器熔丝熔断了，可以用铜丝代替B、若导线c d间断路，仍然可以安全使用三线插座C、若闭合开关S，灯泡L不发光.用测电笔检测e点，氖管不发光，则说明灯丝一定断了D、若a b间断路，灯泡L仍能正常工作12、如图所示，小球沿轨道由静止从A点向D点运动的过程中（小球和轨道间存在摩擦），下列说法错误的是（）A、小球在A点的重力势能最大B、小球在B点的速度最大C、小球在C点和B点的机械能相等D、小球不能达到D点二、填空题（每空1分，计28分）13、某单缸四冲程汽油机正常工作时飞轮的转速为2400r/min.若每次做功冲程对外所做的有用功为300J，则该汽油机的输出功率为________W. 人造地球“同步”卫星在大气层外环绕地球运行，它的速度比地球_____（快/慢）.此“同步”卫星是相对于地球_______（自转/公转）而言的.14、太阳能热水器是通过__________的方式使水的内能增加.小红家的太阳能热水器内有60kg的水，某天阳光照射5 h后，热水器内水温从20℃升高到70℃，则水吸收的太阳能为______J，这些水若改用天然气加热升高同样的温度，天然气完全燃烧放出的热量70%被水吸收，则需要消耗______m3的天然气.[c水=4.2×103J/(kg·℃)，天然气的热值q=4×107J/m3]15、小明用饮料吸管制作了一只简易密度计，将其放入水中时，密度计不能直立，应________（增加/减少）吸管中铁丝质量，改进后，分别用它测量水和盐水的密度时，吸管浸入液体的深度分别为h1和h2，则h1________h2.（选填“>”“<”或“=”）用它测量可乐密度时，吸管上“沾”上许多小气泡，测得的密度偏________.16、一个箱子重为100N，放在水平面上，受6N的水平推力，箱子未动，这时箱子受到的摩擦力________（大于/等于/小于）6N. 当水平推力增大到10N时，箱子恰好做匀速直线运动，此时摩擦力为______N. 当水平推力增大到20N时，箱子受到的摩擦力为________N.17、小胡同学在水槽中洗碗，一个大的瓷碗正漂浮在水槽中．此时碗受到的浮力________重力（大于/等于/小于）.小胡用水槽中的水把碗装满，碗就会沉入水槽底部，此时碗所受到的浮力比漂浮时碗所受到的浮力________．(填“大”“小”或“不变”)，水槽中的水面将会______(填“上升”“下降”或“不变”)．18、酿酒坊里的发酵罐配有笨重的密封罩，为了方便操作，设计了一个杠杆和电磁铁组合系统来升降密封罩，如图所示.电磁铁的工作原理是电流的磁效应，该现象最早是由______（法拉第/奥斯特/安培）发现的.装置通电后，电磁铁上端为______（N/S）极.若密封罩被提起并悬挂于空中，不计衔铁、杠杆的质量，左侧电磁吸力应______（大于/等于/小于）密封罩的重力，若提不起，则应将滑动变阻器滑片向______（左/右）滑动.19、共享单车是绿色环保的交通工具.用车前需手机扫码解锁，如强行开锁则会报警.开锁和报警所需电能由自行车发电提供.（1）车锁外壳应采用硬度较______的材料；骑行时车轮带动发电机发电将______能转化为电能，车轮获得向前动力的同时也将地面的沙尘向后扬起，说明__________________.（2）单车和小明的总重为600N，小明骑单车时，车胎与地面接触的总面积为4.0×10－3m2，则车辆对地面的压强为______Pa.（3）单车报警控制电路的原理如图.电源电压为4.0V，R0为定值电阻，R为压敏电阻，阻值与所受压力F的大小关系为R=10－0.3F(Ω).当F=0时电路电流I=0.25A；当I≥0.4A时会报警.则报警时压敏电阻受到的压力至少为________N.20、如图所示，电源电压恒定，R1、R2为定值电阻，R2=20Ω，灯泡L标有“6V3W”字样.（1）当S、S1、S2都闭合时，灯泡L正常发光，电流表示数为_____A，电路消耗的总功率为______W.（2）当S闭合，S1、S2断开时，电压表示数为2V，则R1的阻值为________Ω，通电1min R1产生的热量为_______J.三、解答题21、作图题（每图2分，计6分）（1）凸透镜如图所示，MN为主光轴，O点为光心，F点为焦点，请在图中画出三条光线的折射光线，并作出物点S的像点S’（注意保留作图痕迹）.（2）图中物块正水平向左滑动并压缩弹簧，在O点画出物块水平方向受力示意图.（3）一间教室要安装2盏“220V 40W”的电灯和1个插座，要求开关S控制两盏灯，且每盏灯都能正常发光.其中部分电路已经连接，请你用笔画线代替导线将电路连接完整.22、（6分）工人师傅用如图所示的滑轮组将重为600N的货物匀速提升了2m，做了1500J的功.求：（1）滑轮组的机械效率.（2）当他用400N的拉力匀速提升其他货物时，额外功占总功的15%，求提升货物的重.23、（9分）某一天晚上睡觉前，小文同学用有预约功能的电饭煲为家人第二天早餐煲粥.小文将大米等食材放入电饭煲内，接通220V家庭电路，经过了待机、加热、保温三个过程，早餐前断开电源，电饭煲消耗的电功率随时间变化的图像如图甲所示。
2020-2021学年江苏省盐城市建湖县汇文实验初中教育集团汇杰校区九年级(下)竞赛物理试卷
2020-2021学年江苏省盐城市建湖县汇文实验初中教育集团汇杰校区九年级（下）竞赛物理试卷一、选择题：（本题共10小题，每小题3分，共30分.下列各题给出的四个选项中，只有一个选项是A ．太阳能B ．风能C ．潮汐能D ．天然气 A ．托盘天平 B ． 独轮车 C ． 筷子 D．船桨 A ．自行车轮胎放气时，气门嘴处温度降低B ．放进冰箱冷冻室的水变成冰块C ．在汽油机的压缩冲程中，气缸内气体的温度升高D ．用手来回弯折铁丝，弯折处铁丝温度升高A ．家庭电路中开关应接在火线上B ．当熔丝熔断后，不能用铜丝代替C ．使用测电笔时，手接触笔尾金属电极D ．发生人员触电时，应立即用手将人拉开∙5．无线充电技术应用了特斯拉线圈，如图，用一不通电的LED灯靠近正在通电的特斯拉线圈时，LED灯发光了，灯被点亮的现象可以用我们学过的哪一知识来解释（）A．电流的磁效应B．磁场对电流的作用C．安培定则D．电磁感应A．功率越大，做功越快，机械效率越大B．做功越少，功率越小，机械效率越小C．功率越大，反映做功越快，与机械效率无关D．机械效率越大，表明它做的功越多A．天然气燃烧产生的二氧化碳，不会加剧地球温室效应B．煤是不可再生的化石能源，它在能源领域重要性有所降低C．地下石油资源取之不尽用之不竭，可无限开采D．核电站可完全替代火电站，因为核能是可再生能源∙8．在探究“比较不同物质吸热升温的属性”时，用酒精灯同时开始均匀加热质量和初温都相等的沙子和水，装置如图。
下列说法正确的是（）A．实验中，沙子吸热升温较快，说明沙子吸热较多B．在本实验中，物体吸热多少是由物质的种类决定的C．实验中，将沙子和水加热到相同温度时，它们吸收的热量相同D．实验中，加热相同的时间，它们吸收的热量相同∙9．用如图甲所示的滑轮组缓慢提升不同物体，每次物体被提升的高度均为0.5m，滑轮组的机械效率与物体受到重力的关系如图乙所示，不计绳重和摩擦，下列分析正确的是（）A．该滑轮组的机械效率可以达到100%B．动滑轮的重力为5NC．每次提升重物时，滑轮组做的额外功为5JD．滑轮组的机械效率越高，拉力做功越少∙10．如图甲所示为一个超声波加湿器，如图乙所示为其内部湿度监测装置的简化电路图。
初中数学江苏省建湖县汇文实验初中九年级数学下学期第一次质量监测考试题考试卷及答案
xx学校xx学年xx学期xx试卷姓名:_____________ 年级:____________ 学号:______________题型选择题填空题简答题xx题xx题xx题总分得分一、xx题评卷人得分（每空xx 分，共xx分）试题1:－3的相反数是【】A.3B.-3C.-D.试题2:下列计算正确的是【】A. B. C. D.试题3:下列根式中，与是同类二次根式的是【】A. B. C. D.试题4:不等式组的解集在数轴上表示正确的是【】试题5:下列方程中,有两个不相等的实数根的是【】A．x2+1=0 B．x2-2x+1=0 C．x2+x+2=0 D．x2+2x-1=0试题6:如图，直线l∥m，将含有45°角的三角形板ABC的直角顶点C放在直线m上，若∠1＝25°，则∠2的度数为【】A．20° B．25° C．30°D．35°试题7:某商品的进价为800元,出售标价为1200元,后来由于该商品积压,商店准备打折销售,要保证利润率不低于5％,该商品最多可打【】A. 9折B. 8折C. 7折D. 6折试题8:观察下列一组图形中的个数，其中第1个图中共有4个点，第2个图中共有10个点,第3个图中共有19个点,……，按此规律第5个图中共有点的个数是【】A．31 B．46 C．51 D．66试题9:若二次根式有意义，则的取值范围是 .试题10:分解因式: = .试题11:今年三八节某市150家景区接待游客约5245000人，数字5245000用科学记数法表示为 .试题12:若分式方程有增根，则m= .试题13:若分式的值为0，则x的值等于 .试题14:若与是同类项，则= .试题15:若是方程的一个根，则的值为.试题16:如图点A,B,C,D在圆O上，点O在∠D的内部，四边形OABC为平行四边形，则∠OAD+∠OCD= °.试题17:如图，在一张矩形纸片ABCD中，AD＝4cm，点E，F分别是CD和AB的中点．现将这张纸片折叠，使点B落在EF上的点G处，折痕为AH．若HG的延长线恰好经过点D，则CD的长为 .试题18:如图，在△ABC中，AB=AC =10，点D是边BC上一动点（不与B，C重合），∠ADE=∠B =，DE交AC于点E，且．下列结论：①△ADE∽△ACD；②当BD=6时，△ABD与△DCE全等；③△DCE为直角三角形时，BD为8或；④．其中正确的结论是 .（把你认为正确结论的序号都填上）试题19:计算；；试题20:解方程：.试题21:先化简，再求值，其中是<x<2的整数解．试题22:已知关于的一元二次方程有两个不相等的实数根.（1）求的取值范围；（2）若为正整数，求该方程的根.试题23:如图是两个全等的含30°角的直角三角形．（1）将其相等边拼在一起，组成一个没有重叠部分的平面图形，请你画出所有不同的拼接平面图形的示意图；（2）若将（1）中平面图形分别印制在质地、形状、大小完全相同的卡片上，洗匀后从中随机抽取一张，求抽取的卡片上平面图形为轴对称图形的概率．如图,AB∥FC,D是AB上一点,DF交AC于点E,DE=FE,分别延长FD和CB交于点G．（1）求证：△ADE≌△CFE；（2）若GB=2，BC=4，BD=1，求AB的长．试题25:海中两个灯塔A、B，其中B位于A的正东方向上，渔船跟踪鱼群由西向东航行，在点C处测得灯塔A在西北方向上，灯塔B在北偏东30°方向上，渔船不改变航向继续向东航行30海里到达点D，这是测得灯塔A在北偏西60°方向上，求灯塔A、B间的距离.（计算结果用根号表示，不取近似值）试题26:如图，AB是⊙O的弦，OP⊥OA交AB于点P，过点B的直线交OP的延长线于点C，且CP=CB．（1）求证：BC是⊙O的切线；（2）若⊙O的半径为，OP=1.求BC的长．试题27:在2014年巴西世界杯足球赛前夕，某体育用品店购进一批单价为40元的球服，如果按单价60元销售，那么一个月内可售出240套.根据销售经验，提高销售单价会导致销售量的减少，即销售单价每提高5元，销售量相应减少20套.设销售单价为x（x≥60）元，销售量为y套.（1）求出y与x 的函数关系式.（2）当销售单价为多少元时，月销售额为14000元？（3）当销售单价为多少元时，才能在一个月内获得最大利润？最大利润是多少？试题28:如图，已知△BAD和△BCE均为等腰直角三角形，∠BAD=∠BCE=90°，点M为DE的中点，过点E与AD平行的直线交射线（1）当A，B，C三点在同一直线上时（如图1），求证：M为AN的中点；（2）将图1中的△BCE绕点B旋转，当A，B，E三点在同一直线上时（如图2），求证：△ACN为等腰直角三角形；（3）将图1中△BCE绕点B旋转到图3位置时, 当A，B，M,N在同一直线上时,(2)中的结论是否仍成立?若成立,试证明之，若不成立，请说明理由．试题29:如图，在△ABC中，AB＝AC＝10cm，BD⊥AC于点D，且BD＝8cm．点M从点A出发，沿AC的方向匀速运动，速度为2cm/s；同时直线PQ由点B出发，沿BA的方向匀速运动，速度为1cm/s，运动过程中始终保持PQ∥AC，直线PQ交AB于点P、交BC于点Q、交B D于点F．连接PM，设运动时间为t秒 (0＜t＜5)．(1)当t为何值时，四边形PQCM是平行四边形？(2)设四边形PQCM的面积为ycm2，求y与t之间的函数关系式；(3)是否存在某一时刻t,使S四边形PQCM＝S△ABC？若存在,求出t的值；若不存在，说明理由；(4)连接PC，是否存在某一时刻t，使点M在线段PC的垂直平分线上？若存在，求出此时t 的值；若不存在，说明理由．试题1答案:A试题2答案:DD试题4答案:B试题5答案:D试题6答案:A试题7答案:C试题8答案:B试题9答案:x≥2；试题10答案: （x+3）（x-3）；试题11答案: 5.245×106；试题12答案: -1；试题13答案: -3；试题14答案:；8；试题16答案:60°；试题17答案:；试题18答案:①②③④.试题19答案:5 ( 5分 )试题20答案:x=-3 ( 5分 )试题21答案:原式=.( 4分 )取x=0代入得原式=-1 ( 4分 )试题22答案:（1）k<( 4分 )（2）正整数k=1；x1=0, x2=-2( 4分 ) 试题23答案:（1）6种,具体略( 画出一种得1分 )（2）P=( 2分 )试题24答案:AB=30+20( 8分 )试题26答案:（1）略( 5分 )（2）BC=2. ( 5分 )试题27答案:（1）∴y=-4x+480 ( 4分 )（2）根据题意可得，x（- 4x+480）=14000 解得，x1=70，x2=50（不合题意舍去）∴当销售价为70元时，月销售额为14000元. ( 4分 )（3）设一个月内获得的利润为ｗ元，根据题意，得ｗ=（x-40）（-4x+480）=-4x2+640x-19200=-4（x-80）2+6400当x=80时，ｗ的最大值为6400∴当销售单价为80元时，月内获得最大利润，最大利润是6400元. ( 4分 )试题28答案:（1）如图1，证△ADM≌△NEM,可得AM=MN．( 4分 )（2）如图2，先证△ADM≌△NEM，∴AD=NE．∴AB=NE．( 4分 )再证△ABC≌△NEC,∴AC=NC，∠ACB=∠NCE．∴∠ACN=∠BCE=90°．∴△ACN为等腰直角三角形．（3）△ACN仍为等腰直角三角形．( 4分 )如图3，∵AD∥EN，∠DAB=90°，∴∠ENA=∠DAN=90°．∵∠BCE=90°，∴∠CBN+∠CEN=360°﹣90°﹣90°=180°．∵A、B、N三点在同一条直线上，∴∠ABC+∠CBN=180°．∴∠ABC=∠NEC．∵△ADM≌△NEM（已证），∴AD=NE．∵AD=AB，∴AB=NE．∴△ABC≌△NEC．∴AC=NC，∠ACB=∠NCE．∴∠ACN=∠BCE=90°．∴△ACN为等腰直角三角形．( 4分 )试题29答案:（1）当时，四边形PQCM是平行四边形；（3分）（2）过P作PE⊥AC，交AC于E，∵ PQ∥AC，∴△PBQ∽△ABC，∴△PBQ是等腰三角形，∴PQ=PB=t，∴∴BF＝，∴FD＝8－，又∵MC=AC-AN=10-2t，∴（3分）（3）∵S△ABC=,∴当y＝S△ABC时，，即，解得（舍去）（3分）（4）假设存在某一时刻t，使点M在线段PC的垂直平分线上，则MP=MC，过M作MH⊥AB，交AB于H，则△AHM∽△ADB，∵在Rt△HMP中，，又∵,由解得：（舍去），∴当时，点M在线段PC的垂直平分线上.。
江苏省盐城市建湖县汇文实验初中教育集团2019-2020学年下学期模拟检测九年级语文试题(含答案)
建湖县汇文实验初中2019-2020学年春学期模拟检测九年级语文试题（卷面总分：150分考试时间：150分钟）一、积累与运用。
（40分）1.古诗文名句及常识填空。
（10分）（1）我是你的十亿分之一，________________________。
(舒婷《祖国啊，我亲爱的祖国》)（2）俱怀逸兴壮思飞，________________________。
（李白《宣州谢朓楼饯别校书叔云》）（3）古今多少事，________________________。
（陈与义《临江仙·夜登小阁，忆洛中旧游》）（4）________________________，却话巴山夜雨时。
（李商隐《_______________》）（5）持节云中，________________________？（苏轼《江城子·密州出猎》）（6）夏完淳的《别云间》表达诗人至死不渝的战斗精神，坚决抗清的豪情壮志的诗句是：________________________，________________________。
（7）刘禹锡《酬乐天扬州初逢席上见赠》中的“________________________，________________________”，以生动的艺术形象，表现出积极进取的人生态度，揭示了新陈代谢的自然规律。
2.阅读下面文字，完成后面3小题（7分）有的所错过的，时不复反，机不再来，属于永远的错过，但因为你善于细细咀嚼这错过的苦果，竟能从惆怅中升华出憬悟，乃至于niàng出诗意与哲理……你的生命，或许反更有厚度；你的心灵，或许反更有虹采；________________________。
（1）根据注音写汉字，根据汉字写拼音。
（2分）咀嚼．（）niàng（）（2）上面这段文字中有两个错别字，请把它们找出来并订正（2分）________改为________________改为________（3）“升华出憬悟”中的“憬悟”的意思是________________________（1分）（4）请仿照划线句子，再写一句：_______________，______________________________。
江苏省建湖县汇文实验初级中学2020届九年级下学期数学第一次线上月考试卷
江苏省建湖县汇文实验初级中学2020届九年级下学期数学第一次线上月考试卷一、选择题（本大题共6小题，每小题3分，共18分）（共6题；共17分）1.－2020的相反数是（）A. 2020B. －2020C.D.2.下列各式中正确的是（）A. B. C. D.3.一元二次方程的根的情况是（）A. 有两个不相等的实数根B. 只有一个实数根C. 有两个相等的实数根D. 没有实数根4.不等式组的解集，在数轴上表示正确的是（）A. B. C. D.5.小明15元买售价相同的软面笔记本，小丽用24元买售价相同的硬面笔记本（两人的钱恰好用完），已知每本硬面笔记本比软面笔记本贵3元，且小明和小丽买到相同数量的笔记本，设软面笔记本每本售价为x元，根据题意可列出的方程为（）A. B. C. D.6.已知关于的分式方程的解为正数，则的取值范围为（）A. B. 且 C. D. 且二、填空题（本大题共6小题，每小题3分，共18分）（共6题；共18分）7.因式分解：x3y-xy=________．8.分式有意义，则x的取值范围是________.9.代数式x2﹣4x﹣2的值为3，则代数式2x2﹣8x﹣5的值为________．10.无人机于空中A处测得某建筑顶部B处的仰角为45°，测得该建筑底部C处的俯角为17°．若无人机的飞行高度AD为62m，则该建筑的高度BC为________m．（参考数据：sin17°≈0.29，cos17°≈0.96，tan17°≈0.31）11.关于x的不等式组的整数解共有5个，则a的取值范围是________．12.关于x的一元二次方程ax2－3x－1＝0的两个不相等的实数根都在－1和0之间（不含－1和0），则a 的取值范围是________.三、解答题（本大题共5小题，共64分）（共8题；共60分）13.解不等式组，并写出它的所有负整数解14.先化简，再求值：，其中.15.已知关于x的一元二次方程2x2+（m﹣2）x﹣m＝0．（1）求证：不论m取何值，方程总有实数根；（2）若该方程的两根互为相反数，求m的值．16.如图，是的中线，，，．求：（1）的长；（2）的正弦值．17.某体育看台侧面的示意图如图所示，观众区AC的坡度i为1：2，顶端C离水平地面AB的高度为10m，从顶棚的D处看E处的仰角α＝18°30′，竖直的立杆上C、D两点间的距离为4m，E处到观众区底端A处的水平距离AF为3m．（sin18°30′≈0.32，tanl8°30′≈0.33，结果精确到0.1m）求：（1）观众区的水平宽度AB；（2）顶棚的E处离地面的高度EF．18.超市销售某种儿童玩具，如果每件利润为40元（市场管理部门规定，该种玩具每件利润不能超过60元），每天可售出50件.根据市场调查发现，销售单价每增加2元，每天销售量会减少1件.设销售单价增加元，每天售出件.（1）请写出与之间的函数表达式；（2）当为多少时，超市每天销售这种玩具可获利润2250元？（3）设超市每天销售这种玩具可获利元，当为多少时最大，最大值是多少？19.如图，四边形ABCD内接于⊙O，AB＝AC，BD⊥AC，垂直为E，点F在BD的延长线上，且DF＝DC，连接AF，CF.（1）求证∠BAC＝2∠DAC；（2）若AF＝10，BC＝4 ,求tan∠BAD的值20.如图抛物线经y=ax2+bx+c过点A（-1,0），tan∠CAB=3，且OB=OC．（1）求抛物线的解析式及其对称轴；（2）点P为抛物线上一点，连接CP，直线CP把四边形CBPA的面积分为3：5两部分，求点P的坐标．答案解析部分一、选择题（本大题共6小题，每小题3分，共18分）1.【答案】A【解析】【解答】解： -2020的相反数是2020.故答案为：A.【分析】绝对值相等，而符号相反的两个数为互为相反数，据此即可作答.2.【答案】D【解析】【解答】解：A. ，A不合题意；B. ，B不合题意；C. ，C不合题意；D. ，D符合题意。
江苏省盐城市部分学校2020-2021学年九年级下学期第一次月考英语试题汇编：单项选择
江苏省盐城市部分学校2020-2021学年九年级下学期第一次月考英语试题汇编单项选择江苏省东台市第五联盟2020-2021学年九年级下学期第一次质量检测英语试题二、单项选择（共15 小题, 每小题1分, 满分15分）从A、B、C、D四个选项中, 选出可以填入空白处的最佳选项。
21.I like the colour of your trousers. It is __________ good match for your coat.A./B. aC. theD. an22. It is dark outside. Who's knocking at the door?一___________ may be Henry. Ifs time for him to come back from work.A. ItB. HeC. SheD. I23. I've come to the _________ that Lydia is the right person to make friends with. She is friendly, helpful and honest.rmationB. directionC. conclusionD. invitation24.— Why didn't you cry for help when you were robbed?---If I opened my mouth at that time, they might find my four gold teeth. That would be _____!A. badB. much worseC. worstD. the worst25. The school offers two courses on computer technology. One is for beginners and ________ for students who already have some basic knowledge, but I will take _________.A. others ; noneB. another; bothC. one; eitherD. the other; neither26. — How do you find the film Frozen?—Oh, ___________. Its music and story are both attractive.A. not very excitingB. I can't praise it too muchC. I don't like it very muchD. I can find a better one27. It was a bit doubtful at first, but it ____________to be a really good idea.A. turned upB. turned downC. turned outD. turned in28---Did you see anyone walk by just now?---No, I _________________a movie.A. have watchedB. was watchingC. watchedD. am watching29. --Who will win the first prize in the drawing competition?--Nobody can know the result until it __________________tomorrow morning.A. announceB. will be announcedC. is announcedD. announces30.______________ big success the charity show was! We collected so many things for the left-behind children.A. HowB. How aC. WhatD. What a31. The "teacher free exam" means that students take their exams _________teachers. Students must be more honest.A. in front ofB. withoutC. throughD. above32. — Why can't you trust me? Not everything you heard is true.—Maybe not. But ___________________.A. when in Rome, do as the Romans doB. there is no smoke without fireC. the grass is always greener on the other sideD. actions speak louder than words33. — Jason, don't jump to any conclusion, _____________when you are in such a bad mood. —Don't worry, I won't.A. exactlyB. totallyC. especiallyD. usually34. —Do you know_______________?—Yes, of course. It will be hosted by Beijing and Zhangjiakou.A. how will be the 2022 Winter OlympicsB. which city will host the 2022 Winter OlympicsC. when the2022 Winter Olympics will be heldD. where will be the 2022 Winter Olympics held35. —Are you willing to study abroad one day?—_________________. It sounds attractive, but it still worries me.A. Of course I am.B. Why not!D. Are you joking? C. I'm not sure.答案：21-25 BACBD 26-30 BCBCD 31-35 BBCBC2020-2021学年江苏省东台市第二学期第四教育联盟月检测一九年级英语试卷二、单项选择（共15小题，每小题1分，满分15分）从A、B、 C、 D四个选项中，选出可以填入空白处的最佳选项。
江苏省建湖县汇文实验初中教育集团2021届九年级十二月份学情调研考试语文试题
建湖县汇文实验初中2020～2021学年度第一学期九年级十二月份学情调研考试语文试卷（试卷满分150分，考试时间140分钟）一、积累与运用（35分）1.古诗文默写（10分）①善学者尽其理，。
《荀子·大略》②，西北望，射天狼。
（苏轼《江城子·密州出猎》）③四面歌残终破楚，。
（秋瑾《满江红》）④溪云初起日沉阁，。
（许浑《咸阳城东楼》）⑤，夜吟应觉月光寒。
（李商隐《无题》）⑥爱上层楼, 。
（辛弃疾《丑奴儿》）⑦读诗歌，就是在触摸诗人的情怀，读范仲淹的《渔家傲秋思》从“，”中感受将士们浓重乡思与爱国激情的矛盾情绪；读辛弃疾的《破阵子为陈同甫赋壮词以寄之》从“，”中体会诗人渴望报效朝廷、建立功名的抱负。
2.阅读下面的文字，按要求答题。
（6分）盐城—大美湿地， A （物产丰富，人民生活富足）。
放眼条子泥湿地，黄与绿主宰着，广mào（）无垠，坦荡如砥；其生态独特性，在中国乃至全世界，都曲指可数。
582公里，每一天，盐城从那宽阔绵延的海岸线开始醒来。
丹顶鹤翩翩起舞；麋鹿萧洒漫步；勺嘴鹬悠然qī（）息，……它们的自在生活，诠释着这里的盎然生机。
（1）根据拼音写汉字。
（2分）广mào（）无垠悠然qī（）息（2）找出文中的两个错别字，并将之改正。
（2分）改为改为（3）A处的成语是（2分）3. 下列加粗成语使用正确的一项是（）（2分）A. 那些出于猎奇心理而孜孜不倦地去食用野生动物的人真是可恶，害人害己，我们一定要引以为戒。
B. 此次冠状肺炎传染性极高，一时间，各大商场万人空巷，大家都积极响应国家的号召，呆在家里，不去人多的场所。
C. 2003年，钟南山面对“非典”临危不惧，2020年，他又不顾80多岁的高龄，毅然决然赶赴中心疫区，为防控疫情殚精竭虑，也正因为如此，钟南山赢得了“国士无双”的赞誉。
D. 疫情一开始爆发，举国上下所有的医护人员草木皆兵，兢兢业业，放弃了休息的时间，奋斗在一线，着实令我们动容。
江苏省盐城市部分学校2020-2021学年九年级下学期第一次月考英语试题汇编：任务型阅读
江苏省盐城市部分学校2020-2021学年九年级下学期第一次月考英语试题汇编任务型阅读江苏省东台市第五联盟2020-2021学年九年级下学期第一次质量检测英语试题B. 任务型阅读（共10小题, 每小题1分, 计10分）阅读下面一段短文, 并根据所读内容在文章后表格中的空格里填入一个最恰当的单词, 每个空格只填一个单词．．．．．．。
(10分)Creating a study planStudying is important to students. But it is always difficult to findenough time to study every subject you need. So a good plan helps youto make sure of your success in study.Then, how to make a study plan? Well, you can begin with listingall the subjects you need to study and make sure what you need to do foreach subject. Next, you should decide how much time you should spendon different subjects. Now, it is a good idea to study at the same time every day. In this way, you actually have a plan you can remember easily. While arranging ( 安排) time for each subject, you also need to make sure that you still have time for family, friends and rest. This is because you won't be able to succeed in your studies unless you balance Your personal life and your study.Once the plan is made, the next thing you need to do is to follow it. One of the biggest challenges in following your study plan is that you will be tempted ( 诱惑) to avoid it and do something relaxing, or fun instead. Luckily, you can fight this temptation by taking breaks. But be sure not to take extra breaks or too long breaks as it can affect your plan. So at the start of your break，set an alarm clock to remind you when your break is over. Also, you need to use your break wisely. For example, go for a short walk, eat a small snack, or listen to some music.To avoid forgetting to follow your plan, try to get into the habit of looking at your calendar every day. Sometimes our plans are herd to follow because some important people in our lives distract ( 使分心) us from our goals. In order to avoid this, tell people in your life about your plan. Put up a copy of your study guide at home so you and your family can see it, and email a copy to your friends so they know when you have spare time.66-70 importance helpful list spend forget71-75 balance Follow wise seen know2020-2021学年江苏省东台市第二学期第四教育联盟月检测一九年级英语试卷B. 任务型阅读（共10小题，每小题1分，计10分）阅读下面短文，根据短文内容完成表格中所缺信息，每空一词。
江苏省盐城市建湖县汇杰初级中学2021-2022学年九年级12月阶段质量调研化学试题
D.过氧乙酸中碳、氢、氧的质量比为:（12×2）:（1×4）:（16×3）=6: 1: 12，可见其中氢元素质量分数最小，故选项说法正确。
故选: D。
12.宏观辨识与微观探析是化学学科核心素养之一。对下列微观图示的理解不正确的是
故选：B。
9.中华古代文化既蕴含人文思想，又焕发理性光辉，下列理解不合理的是
选项
文摘
理解
A
金柔锡柔，合两柔则刚
说明合金的熔点比组成它的纯金属高
B
花气袭人知骤暖，喜鹊穿树喜新晴
前半句描述了温度升高分子运动加快
C
美人首饰侯王印，尽是沙中浪底来
金的性质稳定，在自然界中以单质形态存在
D
钻石恒久远，一颗永流传
D.河水中含有多种物质，属于混合物，碳是碳元素组成的纯净物，属于单质，碳酸钙是钙离子与碳酸根离子构成的化合物，二氧化锰是锰元素与氧元素组成的氧化物，属于纯净物，选项错误；
故选C。
5.常温下能与二氧化碳发生化合反应的物质是
A.水B.澄清石灰水C.氧气D.木炭
【答案】A
【解析】
【详解】试题分析：A.二氧化碳与水在常温下反应生成碳酸，属于化合反应，该项正确；
C.图c中蜡烛火焰很快熄灭，原因是金属丝圈吸收热量，温度降低到蜡烛着火点以下，故不符合题意；
D.由图d中的现象可知，金属镁燃烧的火灾不能用二氧化碳灭火，故符合题意
11.截止2021年6月，全球感染新冠病毒的人数近18亿，做好个人防护尤为重要。过氧乙酸（C2H4O3）是一种常用的消毒剂，下列关于过氧乙酸的说法正确的是
6.在许多化学反应中都有能量的变化，这是人类寻找和开发新能源的重要途径之一。在下列变化中基本没有能量变化的是
江苏省盐城市建湖县城南实验初中教育集团2020-2021学年九年级下学期期中考试语文试卷(word
建湖县城南实验初中2021年春学期期中考试八年级语文试卷（分值：150分时间：150分钟）一、语言积累与运用（35分）1.诗文名句默写（10分）（1）会当凌绝顶，。
（杜甫《望岳》）（2）是亦不可以已乎？。
（孟子《鱼我所欲也》）（3）俗子胸襟谁识我？。
（秋瑾《满江红·小住京华》）（4）浊酒一杯家万里，。
（范仲淹《渔家傲》）（5），病树前头万木春。
（《酬乐天扬州初逢席上见赠》）（6）春蚕到死丝方尽，。
（李商隐《无题》）（7），宫阙万间都做了土。
（张养浩《山坡羊·潼关怀古》）（8）岑参在《白雪歌送武判官归京》中以春花喻冬雪的诗句是：“，。
”2.阅读下面文字，按要求回答问题。
（5分）清明时节，南京中山陵风景区游人络绎不绝。
山上松柏常青，景色秀丽，巍峨壮观。
南京中山陵与周围的水光山色róng为一体，因其独特的魅力当之无愧地成为xiá迩闻名的旅游胜地。
如今，一幅“山上人文景观，山坡绿树果园”的壮丽画卷正在向世人缓缓展开。
（1）根据拼音写出汉字或给加点字注音。
（3分）xiá( )迩róng( )为一体魅．力( )（2）请用“络绎不绝”另造一个句子。
（2分）3.根据情境，下列加点词义解释正确的一项是（）（2分）A.爱能包容大千世界，使千差万别、迥异．．不同的人和谐地融为一个整体。
（迥异：完全不同）B.他坦率地说知道某些方法，但他笃信．．还会有上百种不为人知的方法。
（笃信：不相信）C.但终于没有进学，又不会营生．．。
（营生：谋生）D.今年的春天来得太迟了，有一些老人挺．不住，在清明将到的时候死去了，（挺：勉强支撑）4.下面句子没有语病的一项（）（2分）A.常州外国语学校近500左右的学生身体异常，还有人查出淋巴癌白血病。
B.官方消息显示，17日早上，中国海军首次派巡逻机赴南沙永暑礁转运重病工人。
C.地震已致厄瓜多尔246人遇难，2527人受伤，为避免灾区人民不再受到伤害，该国政府已紧急动员一万多名军警到灾区投入救灾行动。
汇文实验初中教育集团2020-2021学年九年级下学期学情调研化学试题 答案和解析q
江苏省盐城市建湖县汇文实验初中教育集团【最新】九年级下学期学情调研化学试题学校:___________姓名：___________班级：___________考号：___________一、单选题1．下列各组物质按照氧化物、酸、碱、盐的顺序排列的是（）A．氧化钠、硫酸、石灰水、硝酸钾B．氧化镁、硫酸铜、氢氧化钠、大理石C．生石灰、盐酸、熟石灰、小苏打D．氯化氢、碳酸、烧碱、苏打2．下列物质需要密封保存的原因，与空气中的水蒸气无关的是（）A．氧化钙B．浓盐酸C．浓硫酸D．氢氧化钠3．复合肥能提供几种养分，给农作物以“全面呵护”。
下列属于复合肥的是A．硫酸钾[K2SO4] B．磷酸二氢铵[NH4H2PO4]C．尿素[CO(NH2)2] D．硝酸铵[NH4NO3]4．下表中知识的归纳错误的一组是（）A．A B．B C．C D．D5．国外医学界研究表明，如果人体不缺乏微量元素而随意过量补充，不仅对健康无益，反而有害。
下列元素属于人体中微量元素的是（）A．碳B．氢C．氧D．碘6．用水做试剂不可能区分开来的一组物质是（）A．生石灰、食盐、烧碱B．汽油、酒精、浓硫酸C．无水硫酸铜、碳酸钙、碳酸钠D．氯化钾、硝酸钾、硫酸钾7．下列“课外实验”不能达到预期目的的是（）A．用柠檬酸、果汁、白糖、水、小苏打等制汽水B．用空塑料瓶、小卵石、石英砂、活性炭、膨松棉等制作简易净化器C．向洗净的碎鸡蛋壳中加入食盐水可制二氧化碳D．用酒精浸泡捣烂的某些植物的花瓣可制酸碱指示剂8．配制20%的氯化钠溶液时，会引起溶液中氯化钠的质量分数偏大的是A．氯化钠晶体不纯B．转移已配好的溶液时，有少量液体溅出C．用量筒取水时俯视读数D．烧杯用蒸馏水润洗后再配制溶液9．在不使用酸碱指示剂的前提下，欲除去氯化钙溶液中的少量盐酸，得到纯的氯化钙溶液，最适宜选用的一种试剂是A．硝酸银溶液B．澄清石灰水C．生石灰粉末D．碳酸钙粉末10．鉴别下列各组物质，括号中选用的试剂或方法，不合理的是（）A．酒精和氯化钠溶液（闻气味）B．氢氧化钠溶液和稀硫酸（酚酞试液）C．澄清的石灰水和氢氧化钠溶液（稀盐酸）D．高锰酸钾和硝酸钾（观察颜色）11．甲乙两个工厂，排放的废水澄清透明，分别含有四种不同的离子，共有SO42-、K+、Ba2+、Cu2+、OH-、NO3-、H+、CO32-八种离子，其中甲厂废水呈碱性，则乙厂的废水中含有的离子是（）A．Ba2+、Cu2+、K+、H+B．K+、Ba2+、NO3 -、Cu2+C．K+、NO3-、CO32-、SO42-D．Ba2+、Cu2+、NO3 -、H+12．某白色粉末可能含有NaOH,Na2CO3,Na2SO4,NaCl中的一种或几种.为探究白色粉末的性质,将该粉末放入足量水中,充分搅拌后,把所得溶液分为三份进行实验：①第一份溶液中滴加酚酞后,溶液呈红色；②第二份溶液中滴加稀盐酸后,开始无明显现象,随着盐酸的滴入逐渐有气泡产生；③第三份溶液中滴加BaCl2后有白色沉淀生成,过滤,所得沉淀全部溶于稀盐酸，分析实验得出的以下结论,合理的是（）A．一定含有Na2CO3,一定没有Na2SO4, NaOH,可能含有NaClB．一定含有Na2CO3, NaCl,一定没有Na2SO4,可能含有NaOHC．一定含有NaOH, Na2CO3,一定没有Na2SO4,可能含有NaClD．一定含有Na2CO3,一定没有Na2SO4, NaCl,可能含有NaOH13．在一定质量的甲溶液中逐渐加入乙至过量，反应过程中溶液的总质量与加入乙的质量的关系，能用右下图曲线表示的是( )A．①②B．③④C．①⑤D．②⑤14．已知某反应Ca(OH)2+YCln→CaCl2 +Z，那么Z（不含氮元素）可能是①水②可溶性碱③难溶性碱④难溶性盐（）A．①②B．①③C．①②③D．①②③④15．碳酸钠、氢氧化钠和水的混合物若干，与100g7.3%的盐酸恰好完全反应，将反应后的溶液蒸干，可得晶体质量为（）A．5.85g B．11.7g C．23.4g D．9.0g二、填空题16．请选用下列字母序号填空：a 碳酸氢钠b 熟石灰c 稀盐酸d 生石灰e 吸水性f 酸碱度g 乳化作用h 中和反应i 酸碱性j 脱水性①可用于改良酸性土壤的_______，②可用作金属表面清洁剂的_______，③可用来做食品干燥剂的是_______，④用作发酵粉的是_______，⑤被蚊虫叮咬涂肥皂水利用了_______，⑥浓硫酸作干燥剂是具有_______，⑦洗涤剂能去除油污是利用了_______，⑧酸碱指示剂可测出某溶液的_______。
2021年江苏建湖汇文实验初中九年级下第一次质监英语试卷
2021年江苏建湖汇文实验初中九年级下第一次质监英语试卷学校:___________姓名：___________班级：___________考号：___________一、单选题1．Mary, who’s __ woman over there? -She’s my mother, __ university teacher．A．the, the B．the, aC．a, the D．the, an2．On Mother's Day, many children presents of love to their mothers．A． receive B． make C． send D． Lend3．—— I heard that Johnson missed the early bus yesterday morning．——Yes．The traffic was very heavy,_______，he didn’t arrive on time．A．so far B．as a resultC．by the way D．instead of4．——When did Hong Kong return to our motherland? --_______ July 1st, 1997．A．On B．At C．In D．/6．My sister is a person．She feels sure about her own ability．A．confident B．selfishC．patient D．Humorous8．——_________ weather it is! We can't go boating on the Shuanghu Park this afternoon．——Don't worry．Let's go to the Science Museum instead．A．What good B．How goodC．How bad D．What bad10．——Would you like some juice, milk or water?——．I only like some tea．A．Neither B．NoneC．All D．Both11．——Excuse me, Miss Tang．I left my homework at home over again!—— __________．Please bring it tomorrow．A．Nice idea B．It doesn’t matterC．Here we go D．No way12．——Where is your father? I’m looking for him everywhere．——He______ my grandmother surfing the Internet on the second floor．A． is teaching B． teachesC． has taught D． Taught13．Can you tell me ______the truth?A．if does the teacher knowB．the teacher knows ifC．if the teacher knowsD．does the teacher if knows14．——My diamond necklace has gone missing．It’s my favourite present from my mother．——_________．A．Never mind B．No problemC．That’s OK．D．I’m sorry to hear that二、完型填空Mrs Hyde is a housewife．She went to the “Fitness Club” every afternoon because she wanted to keep healthy．One Friday afternoon, she 15 the door and went there as usual．16 she came home, she felt something unusual．She found her necklace and new digital camera 17 ．She wondered 18 someone got in．However, there was no 19 of breaking into the room．She made a decision to 20 the truth．The following Friday, Mrs Hyde went out 21 her usual time but she went shopping in the supermarket 22 going to the club．23 she came home shortly after．She let herself in through the back door and sat down to wait and 24 what would happen．It was 4：30 p．m．Suddenly, the bell rang while Mrs Hyde was making tea．The bell rang again, but Mrs Hyde didn’t25 it．Then she 26 her letter box being opened．Shesaw carefully what happened in the kitchen．A piece of wire(绳) appeared 27 the letter box and then a hand．The wire caught around the knob of the back door and turned．Mrs Hyde took out her mobile phone and called 28 at once．She told the police what was happening 29 ．A few minutes later, two policemen came and caught the thief．15．A．locked B．opened C．brought D．took 16．A．After B．When C．Before D．If 17．A．missed B．broke C．missing D．breaking 18．A．who B．how C．which D．whether 19．A．reason B．way C．information D．evidence 20．A．find B．find out C．look for D．search 21．A．in B．on C．at D．by 22．A．instead of B．instead C．rather D．than 23．A．But B．Also C．Or D．Then 24．A．see B．seen C．saw D．to see 25．A．hear B．tell C．answer D．say 26．A．heard B．felt C．made D．used 27．A．across B．with C．by D．through 28．A．her neighbor B．the police C．her husband D．her friend 29．A．loudly B．noisily C．quietly D．sadly三、阅读单选Famous Museums30．As one of the largest museums in the world, British museum is in _______ ．A．Beijing B．New YorkC．London D．The USA31．New York Museum is America’s largest museum on American__________．A．history B．areaC．collections D．buildings32．The Palace Museum which is in the center of Beijing, is also called “Forbidden City(紫禁城)” in China．It lies in __________．A．New Oxford Street B．Chang’an StreetC．Beijing Street D．Chestnut Street33．According to the form, if you want to see ancient Chinese collections, you can visit ____ at most．A．one museum B．three museumsC．two museums D．fore museums34．Which of the following is TRUE according to the information above?A．Each ticket for the Palace Museum costs the same in the whole year．B．New York Museum is the largest in the world．C．British Museum lies in Chestnut Street, London．D．You don’t have to pay for tickets if you visit New York Museum on Monday．What's the most important thing for you to have in your life? Somebody mentionshard-work, others suggest knowledge, love and luck．If you arrange the 26 English letters alphabetically(按字母表顺序)and use numbers to represent each of them, for example, 1 for a 2 for b, 3 for c．．．, you can change an English word into a number． So hard-work becomes8+1+18+4+23+15+18+11=98, meaning 98 is itsmark；knowledge：11+14+15+23+12+5+4+7+5=96．while love：12+15+22+5=54, and luck：12+2l+3+11=47, a small mark．None of these words can give one a full mark． What about money or prayer(祈祷）?They can't, either．Then what else? Don't be worried． You can always find an answer to a problem in your life, when you change your way of looking at things or doing things，or your attitude． Yes, attitude is the word． See for yourself： attitude：1+20+20+9+20+2l+4+5=100, a full mark．Different attitudes lead to different courses of life． Most times people hope for a better life． It is possible that one will have a change for the better after one has changed one's attitude．When you change your manner and became friendly towards others, you'll meet more smiling faces towards you． In the same way． if you take a positive（积极地）attitude towards failure（失败）, you'll find it's also rewarding though it has caused you losses．35．According to the passage, what number can represent the word “O”? A． 15． B． 14． C． 16． D． 13．36．What is the mark of the word “money”？A．100 B． 96 C．72 D．5437．In the writer's opinion, what is the most important thing in a person's life? A． Hard work． B． Attitude．C． Money． D． Knowledge．38．According to the passage, if you meet with problems，the best way out is to____．A． ask for help from othersB． change your attitudeC． say your prayers to GodD． try maths—solving methods（方法）39．From the passage we can learn that_______．A． different attitudes come from different courses of lifeB． mathematics can solve every problem easily in our daily lifeC． none of the English words except "attitude" equals to 100 or more D． failure sometimes can bring you good if you take a positive attitudeDo you want to know how and why a fall leaf changes color? We first have to understand what leaves are and what they do.Leaves are the world’s food factories. Plants take water from the ground through their roots and take CO2 from the air. Plants use sunlight to turn water and CO2into glucose(葡萄糖), a kind of sugar. Plants use it as food for energy and growing.A chemical called“chlorophyll”in the leaves gives plants their green colour. As summer ends and autumn comes, the days get shorter and shorter, and trees “know” to begin getting ready for winter.During winter, there is not enough sunlight or water. Trees rest during this time and live on the food they store during the summer. They begin to shut down their food-making factories. As the green chlorophyll disappears from the leaves, we begin to see yellow and orange leaves.The bright reds and purples we see in leaves are made mostly in autumn. In some trees, like maples, sunlight and the cool nights of autumn turn the glucose in the leaves into a red colour. And we can enjoy the beautiful red leaves during autumn.40．Which should be in the box? sunlight++CO2glucoseA．air B．sugar C．water D．wind 41．The underlined word “chlorophyll” m eans __________.A．叶绿素B．脂肪C．蛋白质D．淀粉42．The leaves turn yellow because they are short of(缺少) __________.A．water and CO2B．glucose and energyC．sunlight and waterD．sunlight and CO243．Which of the following is NOT true?A．When autumn comes, the days get shorter and shorter.B．During winter trees live on the food they store in summer.C．During winter some of yellow and orange colors are still in the leaves.D．Trees begin to stop making food in summer.44．This passage tells us_____________.A．the plants can grow well only with the sunlightB．there are all kinds of plants on the earthC．not all the colors of the leaves are from chlorophyllD．maple leaves change the color as other trees四、填空Camping in your backyard is full of fun, whatever how old you are．Follow these instructions and you'll have a night and you’ll never forget!Put up your tent．Depending on the number of family members and guests, you may need more than one tent．Tell your friends to bring their tents if needed．Follow the instructions or check out the articles on how to put up a tent on the Internet．Prepare your bedding．You’ll want your guests to be able to relax in comfort．Put something soft to lie on the floor：A blow-up air mattress(床垫) or thick comforters may work well．Fill the tent with soft toys and blankets．Lightweight sleeping bags or cotton blankets are needed, especially when the temperatures drop greatly at night．Prepare a seating area．If you have a picnic table, that would work best．If not, set up a few chairs and a small table to set out drinks and food．A simple choice is to lay out a blanket in the sun, so that your friends can eat and talk．Be sure the grass isn’t wet!Make memories．If you plan some activities, you will be sure to relax yourself．You're camping in the backyard, so it's time to make the most of being outdoors．Have a camera nearby to take silly photos of you, your family members and your friends．Remember to take a photo of all the camps smiling and laughing．Be sure to make copies for everyone!五、回答问题Shanghai-born novelist Lu Shi’e wrote a fantasy novel called New China in 1910．In the book he described a dream where trains were running underground, an iron bridge crossed the Huangpu River and Shanghai hosted a successful World Exposition in the underdeveloped Pudong area at that time．The blueprint(蓝图) described in the novel became real exactly after 100 years．On May 1, 2010, the World Exposition, with 158 years of history, drew back its curtain from Shanghai．According to a source at the Organizing Committee (组织委员会)of the World Exposition 2010 Shanghai, it is expected to attract more than 70 million visitors, making it the most popular exposition in history．It is also the first time the World Exposition is held in a developing country．About 600 years ago, Shanghai was just a small fishing village in China’s eastern coastal area．It grew into a commercial(商业的) city thanks to its prosperous(繁荣的) port and, overthe course of 100 years, Shanghai became among the first Chinese cities to open its doors to the world．Along the way, it became the economic and commercial hub of China．Today, Shanghai is developing into an international metropolis(大都会)．Answer the following questions according to the passage．55．Where was Lu Shi’e born in ? ___________________________________56．When did the blueprint become real ? _______________________________57．How many visitors will Shanghai Exposition attract according to the source?________________________________________________________________58．What was Shanghai like about 600 years ago? _____________________59．What’s the passage mainly about? ______________________________六、根据句意填空词汇（共20小题，每小题1分，计20分）A．根据句意和提示写出单词，完成句子。
2020-2021学年江苏盐城汇文实验初中教育集团汇杰校区九年级下学期开学摸底考试化学试卷含详解
汇杰校区九年级化学学科能力竞赛试卷中可能用到的相对原子质量：H-1C-12N-14O-16Fe-56Cu-64一、选择题（每小题2分，共30分）1.下列跟水有关的变化中，没有发生化学变化的是（）A.海水晒盐B.太阳能光解水制氢气C.光合作用D.生石灰吸水2.每年的4月15日是我国“全民国家安全教育日”。
下列做法不合理的是（）A.高层楼房着火时，不能乘坐电梯逃离B.炒菜时，油锅不慎着火迅速用锅盖盖灭C.启用闲置的地窖前先进行灯火实验D.夜间发现家中天然气泄漏，立即开灯查明泄漏原因3.下列实验操作符合规范要求的是A.闻气体气味B.CO2气体验满C.读取液体体积D.测定溶液pH4.分类法是学习化学常用的一种方法，下列选项符合如图关系的是（）选项a b c dA含氧化合物高锰酸钾氧化物干冰B化合反应石蜡燃烧分解反应微热碳酸溶液C化合物水单质O3D纯净物冰水混合物混合物碳酸钙A.AB.BC.CD.D5.下列物质需要密封保存的原因，与空气中的水蒸气无关的是A.氧化钙B.浓盐酸C.浓硫酸D.氢氧化钠6.下列实验现象的描述不正确的是A.在汽油中加入少量高锰酸钾，高锰酸钾溶解呈紫红色B.硫在氧气中燃烧产生蓝紫色火焰C.加热饱和石灰水，出现白色浑浊D.把洁净的铜丝放入硝酸银溶液中，溶液由无色逐渐变蓝色7.下图形象地表示某反应前后反应物与生成物分子及其数目的变化，其中分别表示A、B、C三种不同的分子。
下列有关说法中错误的是A.两种反应物都是单质B.该反应为化合反应C.生成物中氮元素化合价为-3价D.该反应的化学方程式中A、B、C前的化学计量数之比为4∶1∶28.麻黄碱可用于治疗支气管哮喘、鼻黏膜充血引起的鼻塞等。
它的化学式为C10H15NO，下列说法正确的是（）A.麻黄碱的相对分子质量为165B.麻黄碱中含有10个碳原子C.麻黄碱中氢元素的质量分数最大D.麻黄碱中氮元素和氧元素的质量比为1:19.下列化学符号中数字表示的意义正确的是（）A.S2-：“2–”表示硫元素的带两个单位的负电荷B.2Na：“2”表示两个钠元素C.2Fe2+：前2表示2个铁离子D.CO2：“2”表示一个二氧化碳分子含两个氧原子10.推理是一种重要的学习方法．下列推理中正确的是A.物质与氧气发生的反应都是氧化反应，则氧化反应一定要有氧气参加B.单质是由一种元素组成的物质，则由一种元素组成的物质一定是单质C.中和反应生成盐和水，生成盐和水的反应一定是中和反应D.碱性溶液能使酚酞溶液变红，能使酚酞溶液变红的溶液一定呈碱性11.将质量相等的A、B、C三种金属，同时分别放入三份溶质质量分数相同且足量的稀盐酸中，（已知：A、B、C 在生成物中均为+2价）反应生成H2的质量与反应时间的关系如图所示。
江苏省建湖县汇文实验初中教育集团2020届九年级下学期期中模拟英语试题(无答案)
2019-2020学年第二学期期中考试九年级英语模拟试题（总分140分，考试时间120分钟）命题人：审核人：班级______ 姓名_______ 学号______第I卷(选择题，共80分)一、听力(每小题1分，共20分)A、听下面10段短对话，每段对话后有一个小题，从题中A、B、C、三个选项中选出最佳选项。
听完每段对话后，你都有5秒钟的时间来回答有关小题和阅读下一小题。
每段对话读两遍。
听第1至10段材料，回答1至10小题。
( )1. What does David want to be when he grows up?( )2. What does the boy usually do at 7 in the morning?( )3. What was the man doing at four yesterday afternoon?( )4. When will the woman return home?( )5. How does Bob feel about the math exam?A. Worried.B. Relaxed.C. Confident.( )6. How does Daniel feel about the coming English competition?A. Confident.B. Nervous.C. Stressed.( )7. How much should the woman pay for the tickets?A. 78 Yuan.B. 92 Yuan.C. 117 Yuan.( )8. What did the man do yesterday evening?A. He played ping-pong.B. He went to a meeting.C. He did housework at home. ( )9. When did the woman go to bed yesterday?A. At 10 p.m.B. At 11 p.m.C. At midnight.( )10. Why can’t the two speakers understand what the English teacher says?A. Because he speaks too fast.B. Because they are not good at English.C. Because he doesn’t speak clearly enough.第二部分听对话和短文回答问题这一部分你将听到一段对话和两篇短文、各听两遍。
2021年江苏省盐城市建湖县汇文实验初中中考第二次模拟考试语文试卷
建湖县汇文实验初中2020～2021学年春学期中考第二次模拟考试九年级语文试卷注意事项：1．本次考试时间为150分钟，卷面总分为150分。
考试形式为闭卷。
2．本试卷中所有试题必须答在答题卡上规定的位置，否则不给分。
3．答题前，务必将学校、姓名、班级等信息填写在试卷及答题卡规定位置。
一、积累与运用(38分)1.古诗文名句默写。
（10分）(1)子在川上曰：“▲，不舍昼夜。
”（《论语·子罕》）(2) ▲，客舍青青柳色新。
(王维《送元二使安西》)(3)俗子胸襟谁识我？▲。
（秋瑾《满江红·小住京华》）(4)了却君王天下事，▲名。
（辛弃疾《破阵子·为陈同甫赋壮词以寄之》）(5) ▲，燕然未勒归无计。
（范仲淹《渔家傲·秋思》）(6)伤心秦汉经行处，▲。
（张养浩《山坡羊·潼关怀古》）(7)岑参在《白雪歌送武判官归京》中以春花喻冬雪的诗句是：“▲，▲。
”(8)文天祥的《过零丁洋》一诗中运用比喻把个人遭遇与国家命运紧密结合在一起的诗句是：“▲，▲。
”山河破碎风飘絮，身世浮沉雨打萍2.阅读下面语句，按要求答题。
（6分）阳光明魅、万物复苏、生机盎然、自然清新……绿色湿地生态、红色“铁军”历史、白色海盐文化及蓝色海洋风光构成独特的盐城旅游“四色”名片，在广袤摊涂湿地上与仙鹤共舞、、沐长寿吉祥、悟神奇历史，“cháng佯”在盐城各旅游景点，满眼水绿、满目美景，春天的盐城旅游犹如雨后春sǔn，呈现出无限生机与活力！（1）给加点字注音，或根据拼音写汉字。
(3分)沐．▲长寿吉祥 cháng ▲佯春sǔn ▲（2）语段有两个错别字，请找出来并改正。
(2分)▲改为▲▲改为▲（3）在横线上仿照前一个子句，续写一个分句。
▲（1分）3.下列句子中，加点成语或俗语使用有误的一项是（2分）（）A. 以前的科幻电影中的许多设想，当时看起来是不可思议．．．．的，现在却不断变为现实。
2020-2021学年建湖县汇文实验中学九年级(下)第一次月考物理复习卷(含解析)
2020-2021学年建湖县汇文实验中学九年级(下)第一次月考物理复习卷一、单选题（本大题共12小题，共24.0分）1.有一款新型充电宝，既可以利用太阳能给自身充电，又能给手机等电子设备充电。
下列说法正确的是()A. 太阳能电池可以把太阳能转化为电能B. 给手机充电时手机电池相当于电源C. 太阳能属于一次、不可再生能源D. LED指示灯是由超导材料制成的2.声音与我们的生活密切相关，以下有关声现象的说法正确的是()A. 雨滴落在地面上会发出声音，说明物体不振动也可以发声B. 用超声波清洗仪清洗眼镜，是利用声波能传递能量C. “不敢高声语，恐惊天上人”这里的“高”指的是声音的音调高D. 用声呐探测海底深度，是因为超声波比次声波在水中的传播速度大3.下列叙述中，举重运动员对杠铃做了功的是()A. 使劲抓杠铃但没有举起来B. 举着杠铃在水平地面行走C. 将杠铃从地面举过头顶D. 举着杠铃原地静止不动4.如图是用相同的加热装置对质量相同的A、B两种物质加热时它们的温度随时间变化的图象。
下列对图象的分析正确的是()A. T2一定是物质B的沸点B. 0−t1时间内物质A的比热容大于物质B的比热容C. 物质B一定是晶体，物质A一定不是晶体D. t1−t2时间内物质B的温度不变内能不变5.舞蹈演员在排练时，总是要对着竖直放置的平面镜，纠正自己的动作．当图中的舞蹈演员面对竖直放置的平面镜时，她看到自己在平面镜中的像应该是下列图中的()A.B.C.D.6.如图中能正确表示光从水射向空气时的光路图是()A. B.C. D.7.如图是某取暖器的工作电路图。
为了安全起见，取暖器一般都要安装一个跌倒开关S，使取暖器倾倒时整个电路断开。
则跌倒开关S应安装在()A. a处B. b处C. c处D. d处8.“注意安全，珍惜生命”是大家的共同心愿．下列一些做法符合用电安全的是()A. 空旷地带在电线上晾晒衣服B. 用湿毛巾擦正在工作的台灯C. 用电器的金属外壳要接地D. 有人触电要先直接用手拉开9.如图所示的手电筒内部有一个线圈，线圈内有一可来回运动的条形磁体，按箭头方向摇动时手电筒即可发光．下列实验中，与此手电筒工作原理一致的是()A. B.C. D.10.某5W的吸顶灯由10只额定电压均为5V的LED小灯珠连接而成，任意取下其中一只灯珠后，其余灯珠仍能发光，与普通白炽灯相比，在达到相同亮度的条件下，LED灯可以节约80%的电能。
江苏省建湖县汇文实验初中教育集团2020届九年级下学期期中模拟历史试题(无答案) (1)
2019—2020学年第二学期期中考试九年级历史模拟试题【命题：审核：】班级姓名一、单项选择题(本题共20小题，每小题1分，计20分。
)（）1.《左传》载：“其怀柔天下也，忧俱有外侮。
捍御外侮者，莫如亲亲，故以周亲屏周。
”材料涉及的制度是A．禅让制 B．分封制 C．郡县制 D．行省制（）2.据巴蜀文化研究专家冯广宏考证，李冰在公元前273年前后担任蜀守，并主持修建了都江堰。
据图判断，公元前273年属于A．公元前3世纪前期B．公元前3世纪后期C．公元前2世纪前期D．公元前2世纪后期（）3．面对春秋战国时期周王室衰微、诸侯争霸、政权更迭、生灵涂炭的乱局，不同流派的知识分子提出了不同的治世药方．秦统一的历史证明，哪一种药方更“对症”当时的社会形势？A．儒家：为政以德，仁政治国B．墨家：互助互爱，反对侵略C．法家：提倡法治，中央集权D．道家：顺其自然，无为而治（）4．有学者认为，“它（科举制）是唯一没有被动摇过基础的制度，是在权威一再崩溃和颠覆中唯一能维持全面而广泛影响的制度”，“中国竞争性文士考试制度是该国特有的制度，并持续了一千多年”。
材料表明科举制A．有利于选拔社会人才 B．可以推动教育发展C．具有稳定性和延续性 D．能够防止政权覆灭（）5.小夏在读《唐太宗传》时看到了这样的记载：有大臣请求修复长城，太宗一笑置之。
太宗对修复长城一事置之一笑的理由应该是A. 唐初北方无边B. 长城起不到防御的作用C. 唐国力虚弱无财力支D. 开明的民族政策，民族关系融洽（）6．乾隆二十五年（1760）中国政府曾颁发给部分商人海外渡航证明书，这说明当时清政府A．严格管制对外贸易 B．积极发展对外交往C．废止重农抑商政策 D．屈从于列强的侵路（）7．阅读右图《1838-1852年英国制造品输华值》（严中平《中国近代经济史》）。
对图表信息解读正确的是A．鸦片战争后英国对华商品输出持续增长B．五口通商便利了英国对中国的商品输出C．英国发动两次鸦片战争占领了中国市场D．中国的民族资本抵制了英国的商品倾销（）8．《全球通史》的作者认为“在中国长达数千年的历史上，有过三次大革命，他们从根本上改变了中国的政治和社会结构。
江苏省盐城市建湖县汇文实验初中2021年九年级下学期第一次阶段性检测英语试题
江苏省盐城市建湖县汇文实验初中2019届九年级下学期第一次阶段性检测英语试题学校:___________姓名：___________班级：___________考号：___________一、单选题1．I enjoy having ________ breakfast with my family at home. It makes me feel relaxed. A．a B．an C．the D．/2．–I don’t think you take the game seriously.—Oh, it’s not a match. We’re playing chess just for ______.A．habit B．fun C．hobby D．game3．-Two tickets for Sunday，please!-Sorry．There is ____left．A．nothing B．none C．some D．anything 4．-- Do you love the poems by Li Qingzhao?-- Yes, a little. But I prefer those by Du Fu because can cheer me up.A．it B．he C．she D．they5．--- Where is Jinyi International Cinema? ---It’s ______ of our school.A．south-east B．the south-eastC．to south-east D．in the south-east6．—Listen! Who is singing in the next room? —It must be Sally. I often hear her ______ there. A．singing B．sings C．to sing D．sing7．--The temperature is only 10℃ today. --Yes. strange the weather is in Jianhu this year!A．How B．How a C．What D．What a 8．Life is like a journey. _______ ahead , and you will see a lot more beautiful sceneries(风景). A．Plan B．To plan C．Planning D．Plans9．It’s ____time for me to visit the Guanyin Lake.A．five B．the five C．fifth D．the fifth 10．--- Your bedroom is so dirty. _____ all the rubbish, Peter.--- OK, Mum. I’ll do it right away.A．Put up B．Make up C．Pick up D．Hurry up 11．---Why are you buying so much food?--- Because an old friend of _______ is coming to see me this evening.A．me B．mine C．my father’s D．my father 12．The famous star Zhang Yixin once said, “As a singer, you____ never be too hard-working.”A．must B．can C．should D．may13．---Where is Frank now? --- He with his friends ____ games in the garden.A．plays B．is playing C．are playing D．play 14．Tom will not want to have ______ to do with chess in the future.A．everything B．something C．anything D．nothing 15．—I’m afraid i can’t go to your party.—________________! The party won’t be perfect without you.A．You’re welcome B．That’s nothing C．What a pity D．It doesn’t matter二、完型填空Daniel was disappointed as he 16 out of his 40th job interview. He couldn't believe he had 17 40 interviews. He just finished his university study and needed to get a job18 . He was almost broke（身无分文的）. He decided that he would start a 19 project called "Living the Map". He wanted to get 50 jobs in 50 states in only 50 20 .Daniel's idea may sound crazy, 21 it is really clever. Daniel said that one of his goals was to get as 22 job experience as possible. He was still not sure what kind of job he really wanted. The best way to find out was to try out 23 types of jobs. So, he tried to get jobs that were close to each state's identity(特点). For example, Michigan is famous24 having a lot of car factories, so during his 8th week in Michigan, he worked as an engineer. Wisconsin is known for its cheese, so he was a cheese maker there. In Vermont he made maple syrup, and in Maryland he cooked crab for the patients in a 25 .Daniel not only had fun 26 all kinds of interesting jobs, but he also made 60,000 dollars and became famous. He plans to publish a book about 27 he learned from his project. 28 the beginning, Daniel wanted to be experienced in different jobs, but instead he became famous ,or was he 29 to become famous from the beginning? You decide. Whatever he has in mind, it 30 that there are many more jobs in his future. 16．A．jumped B．ran C．walked D．rolled 17．A．succeeded B．changed C．lost D．failed 18．A．fast B．slowly C．highly D．happily 19．A．interesting B．new C．complete D．boring20．A．months B．minutes C．weeks D．days 21．A．although B．but C．so D．even 22．A．little B．few C．many D．much 23．A．same B．similar C．different D．creative 24．A．as B．of C．on D．for 25．A．restaurant B．hospital C．company D．school 26．A．to try B．tried C．trying D．try 27．A．that B．which C．what D．where 28．A．From B．In C．Of D．On 29．A．hoping B．hoped C．to hope D．hopeful 30．A．like B．likes C．looks D．seems三、阅读单选New York is 3 hours ahead of California but it does not make California slow. Someone graduated at the age of 22, but waited 5 years before getting a good job! Someone became a CEO at 25, and died at 50While another became a CEO at 50, and ▲ to 90 years. Someone is still single, while someone else got married. Obama retires(退休) at 55, but Trump starts at 70 Absolutely everyone in this world works based on their Time Zone.People around you might seem to go ahead of(在….前) you, some might seem to be behind you. But everyone is running their own RACE, in their own TIME.Don’t envy them or laugh at them. They are in their TIME ZONE, and you are in yours! Life is about waiting for the right moment to act.So, RELAX.You’re not LATE.You’re not EARL Y.You are very much ON TIME, and in your TIME ZONE.31．We can know that when it’s 6 a.m. in New York, it’s ______ in California.A．9 a.m. B．9 p.m. C．3 a.m. D．3 p.m. 32．Who is the President of the USA now?A．Obama B．Trump C．Clinton D．Bush33．If someone is ahead of or behind you, you shouldn’t ______them.A．be worried about B．feel happy forC．get angry with D．envy or laugh at34．The best word for the blank in the poem is ______.A．born B．grew C．lived D．married 35．What can we learn from the poem?A．Obama starts at 55,but Trump retires at 70. B．Life is all about waiting for time zones. C．The earlier we succeed, the better we will be.D．Don’t hurry and take your own steps.Humans are land animals, but we are also closely connected to the sea. In history, the sea has given a lot to mankind. The sea has provided man with food and a better way to travel to different parts of the world.In the modern world, the sea offers many resources to help mankind survive. Resources on land are going to meet the end. The sea, however, still can be hoped to satisfy man's needs.The list of riches of the sea to be developed by man's technology is amazing. Oil and gas explorations have been carried out for nearly 30 years. Valuable minerals on the ocean floor are ready to be mined(开采).Fish farming promises to be a good way to produce plenty of food. The culture of fish and shellfish is an ancient skill practiced in the past mainly by eastern people.Besides oil and gas, the sea may offer new sources of energy. Experts believe that the warm temperature of the ocean can be used in a way similar to the steam(蒸汽) in a steamship. Ocean waves offer possible use as a source of energy.Technology allows man to explore more deeply under the sea. The development of strong, new materials has made this possible.The technology to harvest the sea continues to improve. Scientists believe that by the year 2050 the problems that prevent us from making full use of the food, minerals, and energy sources of the sea will be largely solved.36．According to the passage, which is not in the list of the riches of the sea?A．Ocean winds B．Minerals C．Fishes and shellfishes D．Oil and gas 37．When will the problems to explore the deeper sea largely possibly be solved?A．In the next century. B．At the end of the 20th century.C．By the middle of the 21st century. D．In a couple of years.38．Why does the writer mention a steamship in paragraph 5?A．To show that a steamship is better than other kinds of ships.B．To explain that man can make use of sources of energy from the sea.C．To argue that man should use steamships.D．To describe that it is warmer in the ocean than on land.39．What is the best title for the passage?A．Needs of Man. B．Sea and Sources of Energy.C．Sea Exploring Technology. D．Sea Harvest and Food.40．We can conclude(得出结论) from the passage that ______.A．harvesting rice in the sea will be made possibleB．technology for exploring the sea has been solvedC．in the near future man can live on the ocean floorD．humans haven’t fully made use of the riches of the seaI remembered I had a gun if I needed it, and turned back towards this man of the island. He was hiding behind another tree but stepped out to meet me.‘Who are you ? ’I asked, staring at him.‘Ben Gunn ,’he answered, and his voice sounded rough and strange .His skin was burnt nearly black by the su n and his clothes were made from pieces of a ship's sail. ‘Poor Ben Gunn,’ he went on. ‘Alone for three years.’‘Were you shipwrecked(船遇难)?’I asked.‘No ,my friend,’ he said. ‘Marooned.’I had heard the word before, and knew it meant a cruel(残忍的)punishment often used by pirates(海盗)－leaving a man alone on some distant, empty island.‘Marooned for three years, ’he continued,‘ living on wild goats and fish. But I'm in a great need for real English food back home. You don't have a piece of cheese, do you? Many nights I've dreamed of cheese.’He continued. ‘Well, tell me your name. ’‘Jim,’ I told him.‘Well, Jim,’ he said, looking around and lowering his voice to a whisper, ‘I'm rich.’ I was now sure the poor man was crazy ,but he repeated his words. ‘Rich, I sa y! Now ,Jim ,that isn'tFlint's ship, is it?’I began to think that I had found a friend, and I answered him at once. ‘It's not Flint's ship any more. Flint is dead, but there are still some of Flint's men aboard, and that's bad news for us.’‘A man with one leg?’ he asked, fear in his voice.‘Silver?’I asked.‘Yes ,Silver,’ he said, ‘that was his name.’‘He's the cook, and their leader ,too.’ And I told him the fight between Flint and the cook, and the danger we were now in.‘You're in trouble, Jim,’ he said when I'd finished. ‘Well, Ben Gunn will help you. Will your squire(乡绅) be generous if I do, do you think? I don't want him to give me a job, but will he give me one thousand pounds out of money that's really mine?’‘I'm sure he will,’ I said. (Adapted from Treasure Island)41．What were Ben’s clothes made of?A．a fishing net B．a piece of ship's sailC．a piece of old cloth D．a blanket42．What is the correct order of the story?①Jim met Ben on the island. ②Ben wanted to get his 1000 pounds.③Silver became the leader of the ship. ④Flint was dead.A．①④③②B．①④②③C．④①③②D．④③①②43．What does underlined word ‘Marooned’ mean ________ in the passage?A．绞刑B．释放C．流放D．谋杀44．From Ben’s words, he probably came from_________.A．America B．Brazil C．Britain D．France45．It can be inferred(推断)from the passage that___________.A．Ben was marooned for 3 years on the island.B．Ben became a rich man with the help of Jim.C．Jim and Ben used to work on Flint’s ship.D．Silver was an awful man and perhaps he had Flint killed.四、填空阅读下面短文，根据所读内容，在文章后的空格里填入一个最恰当的单词。
江苏省盐城市汇文中学2024-2025学年初三下学期模拟考试英语试题试卷含答案
江苏省盐城市汇文中学2024-2025学年初三下学期模拟考试英语试题试卷注意事项1．考试结束后，请将本试卷和答题卡一并交回．2．答题前，请务必将自己的姓名、准考证号用0．5毫米黑色墨水的签字笔填写在试卷及答题卡的规定位置．3．请认真核对监考员在答题卡上所粘贴的条形码上的姓名、准考证号与本人是否相符．4．作答选择题，必须用2B铅笔将答题卡上对应选项的方框涂满、涂黑；如需改动，请用橡皮擦干净后，再选涂其他答案．作答非选择题，必须用05毫米黑色墨水的签字笔在答题卡上的指定位置作答，在其他位置作答一律无效．5．如需作图，须用2B铅笔绘、写清楚，线条、符号等须加黑、加粗．Ⅰ. 单项选择1、―When are we going to see the movie Pirates of the Caribbean 5, this Saturday or Sunday?―______ is OK. I’m free this weekend.A．Either B．Both C．Neither D．Each2、The traffic policemen always warn the drivers _____ after drinking. If they do so, they will be punished _____ their behavior. A．to drive, by B．not drive, for C．not to drive, for3、My back hurt badly I went to see a doctor.A．so B．or C．and D．but4、--- I didn’t know this is a one way street, Sir.--- ___________A．That’s all right.B．I don’t believe you.C．How dare you say that. D．Sorry, but that’s no excuse.5、—Shall we go out for Chinese food or Western food?—I would rather _____ Chinese food. I think Chinese food looks nice and it tastes delicious.A．/ B．have C．having D．to have6、—I come back to school before 10 o'clock?— No, you needn't.A．Must B．Can C．May D．Should7、--Excuse me, when can we play basketball on the playground?--Not until the playground __________ next week.A．will repair B．will be repaired C．is repaired8、The man with a black hat was seen the shopping mall just now.A．enter B．entering C．entered D．to enter9、一Already five people in the taxi, but the driver managed to take me as well.一Terrible, and it be an uncomfortable journey.A．can B．should C．must D．need10、I’m afraid to take a _______ / pleɪn / to travel, so I often go by train.Ⅱ. 完形填空11、完形填空Teddy’s BearThe story of how the teddy bear was invented is an interesting one. In 1902, American president Theodore (Teddy) Roosevelt was hunting (打猎) in the forest 1 several of his friends. Almost everyone had 2 shot an animal, but the president had not. Nobody wanted to make the president look sad, so they tied an American black bear to a tree. They wanted the president to shoot 3The president was very 4 to see the bear tied to a tree. He felt it was unfair to shoot the bear, because it couldn't 5He refused to shoot it, and the story of his decision went all over the country. Everybody was moved by the president's beliefs (信念). There was 6 a cartoon showing the president refusing to shoot a cute bear.It was this cartoon and the story behind the president's hunting trip that gave Morris an 7 to make a new toy. He made a small, soft bear and showed it in his shop window. Next to the bear he made a sign that read, "Teddy's Bear". The new toy was a big success and it 8 Morris with the money to create a toy company.Teddy bears have been popular 9 they were first made. A teddy bear would be the first choice when people think about children's toys. Theodore Roosevelt's famous _______on a hunting trip in 1902 brought millions of soft, stuffed (填满填充物的) bears. They are being loved by people across the world.1．A．for B．with C．without D．by2．A．succeed B．success C．successful D．successfully3．A．it B．one C．ones D．those4．A．interesting B．interested C．surprising D．surprised5．A．shout at B．shout out C．run away D．run after6．A．once B．only C．even D．ever7．A．dream B．idea C．hope D．reason8．A．provided B．offered C．gave D．sent9．A．before B．since C．after D．when10．A．direction B．responsibility C．pronunciation D．decisionⅢ. 语法填空12、Last Wednesday night, a young lady was attacked in the street. It 1．(happen) at around 8:00 p.m. Some people heard a shout from the lady. When people got there, the lady2．(lie) on the ground, crying. It's said that the lady was a nurse in a hospital. She was on her way back home from work at that time. Suddenly a strong man ran to her and shouted, " 3．(give) me all your belongings(所带的东西Ⅳ. 阅读理解A13、The American company Otherlab has built a new drone (无人机) which the company calls “Sky Machine”.Compared with other unmanned aircraft (无人机), the drone is very different. It is made almost completely out of cardboard. It can be packed with materials and sealed (密封) up with tape.The drone looks like a big paper airplane that we used to make as kids. But this light flyer is not a toy, it was designed to be dropped from airplanes. Hundreds of drones could be launched at once and then they are guided to where they are supposed to go to complete deliveries (递送) to different places over an area covering hundreds of kilometers.The company says it can travel about 150 kilometers at speeds up to 88 kilometers an hour. Now it can carry materials weighing up to one kilogram, but future ones are expected to carry heavier loads (负荷).One of the drone’s main advantages is that it does not have a heavy motor or large battery. Thi s provides more room for materials and makes the drone cost less to build and work.The technology that guides the drone can make it land within 10 meters of its target, according to Otherlab. And once the drone completes its delivery, ▲ and the cardboar d material will decompose (分解) within a few months.Otherlab says the drones can also be reused. Otherlab has received money from the U.S. Department of Defense to carry out research on the drones. The U.S. military has a need for delivery drones. But the delivery drones they usually use can be stolen and studied by others if found after use. Before they can truly disappear, the electronic materials inside the drones must also somehow disappear. Otherlab’s Sky Machine is an attempt to fill that need. Resear chers are still working on ways to get the technology itself to selfdestruct (自毁).1．What makes the new drone very different from other unmanned airplanes?A．It will drop things while flying.B．It can be played as a toy.C．Its main material is cardboard.D．It was made by Otherlab.2．Having no heavy motor or large battery can _______.A．make the drone fly fasterB．make it difficult for the drone to landC．make the drone cost more to buildD．provide more space for carrying materials3．Which of the following can be put in ▲ ?A．it can be thrown awayC．it can fly back where it landsD．it will land within 10 meters of its target4．From the last paragraph, we can learn that _______.A．the U.S. military is using Otherlab’s Sky Ma chinesB．the delivery drones the U.S. military uses are always stolenC．the U.S. Department of Defense supports Otherlab’s researchD．the electronic materials inside a military drone can disappear easilyB14、Someday in the future we may not need to have m oney in our pockets. Is life easier when people don’t need to carry anycurrencyat all? Is money heavy to carry? Is it safe to carry money? Maybe in the future each of us will have only one small plastic credit card. We will use it to buy all the things we now buy with money. We will not need money to pay for things.Of course we may still have some of the same problems with cards we now have with money. Sometimes we lose money. Maybe we will lose the cards. Maybe someone will take the card. Someone may even make a card that looks like our card. Since we can’t buy anything without our cards, the credit card may be no better than currency.Is there something easier to use than credit card? Each of us has a thumbprint(拇指纹). No two thumbprints are the same. Mayb e someday the government will keep people’s thumbprints with a number. When you want to buy something you will put your thumb on a machine or a computer. Each store or business will have one. Everyone’s thumbprint will be in the computers. It will be very difficult to lose our thumbprints! It will be difficult for someone to steal it or to make one like it.根据材料内容选择最佳答案，将其标号填入题前括号内。
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学校 班级 姓名 考试号 0 ………………………………密……………………………封……………………………线……………………………………… 汇杰校区九年级数学能力竞赛 一、选择题（本大题共6小题，每小题2分，共12分.） 1.下列运算正确的是 （ ） A ．2a ﹣a ＝2 B ．a 3•a 2＝a 6 C ．a 3÷a ＝a 2 D ．（2a 2）3＝6a 5 2.2019年7月盐城黄海湿地申遗成功，它的面积约为400000万平方米．将数据400000用科学记数法表示应为 （ ） A ．0.4×106 B ．4×109 C ．40×104 D ．4×105 3.在平面直角坐标系中，点（3，2）关于原点对称的点的坐标是 （ ） A ．（2，3） B ．（﹣3，2） C ．（﹣3，﹣2） D ．（﹣2，﹣3） 4.已知⊙O 的半径为5，点P 在⊙O 外，则OP 的长可能是 （ ） A ．3 B ．4 C ．5 D ．6 5.在Rt △ABC 中，∠C ＝90°，∠B ＝35°，AB ＝7，则BC 的长为 （ ） A ．7sin35° B ． C ．7cos35° D ．7tan35° 6．如果一个数等于两个连续奇数的平方差，那么我们称这个数为“幸福数”．下列数中为“幸福数”的是 （ ） A ．205 B ．250 C ．502 D ．520 二、填空题（本大题共6小题，每小题2分，共12分） 7.若圆锥的母线长为4cm ，底面半径为3cm ，则圆锥的侧面展开图的面积是 cm 2． 8.菱形的两条对角线长分别为6和8，则这个菱形的边长为 ． 9.如图，在⊙O 中，点A 在上，∠BOC ＝100°．则∠BAC ＝ °． 10.若函数y ＝mx 2+x+1的图象与x 轴只有一个公共点，则m 的值是 ． 11.如图，将矩形ABCD 沿CE 折叠，点B 恰好落在边AD 的F 处．若，则tan ∠DCF 的值是 ．
第9题 第11题 第12题
12.如图，在Rt △ABC 中，∠C ＝90°，AC ＝3，BC ＝4，点F 在边AC 上，并且CF ＝1，点E 为边BC
上的动点，将△CEF沿直线EF翻折，点C落在点P处，则点P到边AB距离的最小值是．三、解答题（本大题共8小题，共76分请在答卡指定区域内作答，解答时应写出文字说明、证明过程或演算步骤，）
13．（8分）计算：
(1) |﹣3|+（π﹣1）0﹣； (2) ÷（1+）．
14．（6分）解不等式组，把它的解集在数轴上表示出来并写出整数解．
15．（10分）某市为了解市民每天的阅读时间，随机抽取部分市民进行调查．根据调查结果绘制了如图尚不完整的统计图表：
市民每天的阅读时间统计表
类别 A B C D 阅读时间x（min）0≤x＜30 30≤x＜60 60≤x＜90 x≥90 频数450 400 m 50 根据以上信息解答下列问题：
(1)该调查的样本容量为，m＝；
(2)在扇形统计图中，“B”对应扇形的圆心角等于°；
(3)将每天阅读时间不低于60min的市民称为“阅读爱好者”．若该市约有600万人，请估计该
市能称为“阅读爱好者”的市民有多少万人．
16．（8分）如图，在△ABC中，∠C＝90°，tanA ＝，∠ABC的平分线BD交AC于点D，CD ＝，求AB的长？
17.(10分)如图,四边形ABCD内接于⊙O,∠BAD=90°,点E在BC的延长线上,且∠DEC=∠BAC.
(1)求证：DE是⊙O的切线；
(2)若AC∥DE，当AB＝8，CE＝2时，求AC的长．
座位号
18.（10分）某商场将每件进价为160元的某种商品原来按每件200元出售，一天可售出100件，
后来经过市场调查，发现这种商品单价每降低2元，其销量可增加10件．
(1)求商场经营该商品原来一天可获利润多少元？
(2)设后来该商品每件降价x元,若商场经营该商品一天要获利润4320元,则每件商品应降价多少
元？
19．(12分）甲、乙两地的路程为290千米，一辆汽车早上8：00从甲地出发，匀速向乙地行驶，途中休息一段时间后．按原速继续前进，当离甲地路程为240千米时接到通知，要求中午12：00准时到达乙地．设汽车出发x小时后离甲地的路程为y千米，图中折线OCDE表示接到通知前y 与x之间的函数关系．
(1)根据图象可知，休息前汽车行驶的速度为千米/小时；
(2)求线段DE所表示的y与x之间的函数表达式；
(3)接到通知后，汽车仍按原速行驶能否准时到达？请说明理由．
20．（12分）若二次函数y ＝ax 2+bx+c 的图象与x 轴有两个交点M(x 1,0),N(x 2,0)(0＜x 1＜x 2),且经过点A(0,2）).过点A 的直线l 与x 轴交于点C,与该函数的图象交于点B （异于点A ）．满足△ACN 是等腰直角三角形,记△AMN 的面积为S 1,△BMN 的面积为S 2,且S 2＝S 1．
(1)抛物线的开口方向 （填“上”或“下”）；
(2)求直线l 相应的函数表达式；
(3)求该二次函数的表达式．。