最新扬州市梅岭中学 2017初三期中测试及答案

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2017年梅岭中学九年级中考模拟考试数学试题

2017年梅岭中学九年级中考模拟考试数学试题

2 3 x 3 2 ,得 x . 3 2 3 ∴ 原不等式组的解集为 2 x . 2
解不等式 ∴ 原不等式组的整数解为-1,0,1. 21.解:(1)18,0.18; (2)图略; (3)80-90; (4)350×0.30=105(人)答:约有 105 人. 1 22. (1)恰好选中乙的概率是 ; 3 (2) 树状图略 1 恰好选中甲和乙的概率是 . 6 分
二、填空题(本大题共有 10 小题,每小题 3 分,共 30 分)
九年级数学试卷共 6 页第 6 页
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三、解答题(本大题共有 10 小题,共 96 分.解答时应写出文字说明、证明过程或演算步 骤) 19.(1) 解:原式 = 4 2 3 8
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(1) 判断函数 y = 3x + 2 与 y = 2x + 1 在-2 ≤ x≤ 0 上是否为“相邻函数”, 说明理由; (2)若函数 y = x2 - x 与 y = x - a 在 0 ≤ x ≤ 2 上是“相邻函数”,求 a 的取值范围; (3)若函数 y = 最小值.

梅岭九年级上学期期中数学试卷

梅岭九年级上学期期中数学试卷

扬州市梅岭中学九年级数学期中试卷2016.11一、选择题(本大题共8小题,每小题3分,共24分)1.用配方法解方程0142=+-x x 时,配方后所得的方程是【 ▲ 】A .1)2(2=-xB .1)2(2-=-xC .3)2(2=-xD .3)2(2=+x 2.已知⊙O 的直径为6cm ,点A 不在⊙O 内,则OA 的长 【 ▲ 】A .大于3cmB .不小于3cmC .大于6cmD .不小于6cm 3.方程2232mx x x mx -=-+是关于x 的一元二次方程,则m 的取值范围为【 ▲ 】 A .m≠0B .m≠1C .m≠-1D .m≠±14.为了了解某班同学一周的课外阅读量,任选班上15名同学进行调查,统计如表,则下列说法错误的是【 ▲ 】A .中位数是2B .平均数是2C .众数是2D .极差是25. a ,b ,c 为常数,且(a -c )2>a 2+c 2,则关于x 的方程 ax 2+bx +c =0根的情况是【 ▲ 】 A .有两个相等的实数根 B .有两个不相等的实数根C .无实数根D .有一根为06. 如图,AB 是⊙O 的直径,P A 切⊙O 于点A ,OP 交⊙O 于点C ,连接BC .若∠P=20°,则∠B 的度数是【 ▲ 】 A . 20° B . 25° C. 30° D. 35° 7.如图是一个圆锥的主视图,则这个圆锥的全面积是【 ▲ 】 A . π12 B . π15 C. π21 D. π248.股票每天的涨、跌幅均不能超过10%,即当涨了原价的10%后,便不能再涨,叫做涨停;当跌了原价的10%后,便不能再跌,叫做跌停.已知一只股票某天跌停,之后两天时间又涨回到原价.若这两天此股票股价的平均增长率为x ,则x 满足的方程是【 ▲ 】 A .(1+x )2=B .(1+x )2=C .1+2x=D .1+2x=二、填空题(本大题共有10小题,每小题3分,满分 30分). 9.已知一元二次方程01522=--x x的两根为1x ,2x ,则=+21x x ▲10.已知1x =-是关于x 的方程022=-+a ax x 的一个根,则a = ▲ 11.一组数据2,3,x ,6的极差是6,则x= ▲12.已知一组数据为0.1,0.2,0.3,0.4,0.5,则这组数据的方差为_ ▲__. 13.若2222()(1)120xy x y ,则22x y ▲阅读量(单位:本/周)1 2 3 4 人数(单位:人)14622第6题图C OAB64第7题图14.直径为10cm 的⊙O 中,弦AB=5cm ,则弦AB 所对的圆周角是 ▲ .15.如图,AB,AC 分别是⊙O 的直径和弦,OD AC ⊥于点D ,连结BD 、BC ,5AB =,4AC =,则BD= ▲ .16.如图,60ACB ∠=°,半径为3cm 的O ⊙切BC 于点C ,若将O ⊙在CB 上向右滚动,则当滚动到O ⊙与CA 也相切时,圆心O 移动的水平距离是 ▲ cm .第18题图17.如图,Rt △ABC 中,AC ⊥BC ,AC =8,BC =12,P 是△ABC 内部的一个动点,且满足 ∠PCA=∠PBC ,则线段AP 长的最小值为 ▲18.如图,⊙P 的半径为10,A 、B 是圆上任意两点,且AB=12,以AB 为边作正方形ABCD(点D 、P 在直线AB 两侧),若AB 边绕点P 旋转一周,则CD 边扫过的面积为 ▲三、解答题(本大题共10小题,共96分,请在答题卡指定区域内作答,解答时应写出必要的文字说明、证明过程或演算步骤)19.(本题8分)解下列方程: (1) x 2-6x =0; (2)93222-=-x x )(.20.(本题8分)如图,在平面直角坐标系xOy 中,点A 的坐标为(0,7),点B 的坐标为 (0,3),点C 的坐标为(3,0).(1)在图中画.出.△ABC 的外接圆,并写出圆心坐标为______; (2)若在x 轴的正半轴上有一点D ,且∠ADB =∠ACB , 则点D 的坐标为 ;21.(本题8分)已知:关于x 的方程mx 2+(m-3)x-3=0(m ≠0). (1)求证:方程总有两个实数根;(2)如果m 为正整数,且方程的两个根均为整数,求m 的值.22. (本题满分10分)在美化校园的活动中,某兴趣小组想借助如图所示的直角墙角,墙DF 足够长,墙DE 长为12米,现用20米长的篱笆围成一个矩形花园ABCD ,点C 在墙DF 上,点A 在墙DE 上,(篱笆只围AB ,BC 两边).(1)如何才能围成矩形花园的面积为75m 2?(2)能够围成面积为101m 2的矩形花园吗?如能说明围法,如不能,说明理由.23.(本题10分)某班为了从甲、乙两位同学中选出班长,进行了一次演讲答辩与民主测评,A 、B 、第15题图第16题图第17题图A P CC、D、E五位老师作为评委,对“演讲答辩”情况进行评价,全班50位同学参与了民主测评。

江苏省扬州市梅岭中学2017届中考第二次模拟考试数学试题有答案

江苏省扬州市梅岭中学2017届中考第二次模拟考试数学试题有答案

扬州市梅岭中学2017年九年级数学第二次模拟考试(考试时间:120分钟 满分:150分)一、选择题(每小题3分,共24分)1.某天的最高气温是5℃,最低气温是﹣4℃,则这一天气温的温差是( )A .1℃B .﹣1℃C .9℃D .﹣9℃2.如图所示的几何体的左视图是( )A .B .C .D .4.下列调查中,适合普查的事件是( )A .调查华为手机的使用寿命vB .调查市九年级学生的心理健康情况C .调查你班学生打网络游戏的情况D .调查中央电视台《中国舆论场》的节目收视率5.如图,在平面直角坐标系中,以O 为圆心,适当长为半径画弧,交x 轴于点M ,交y 轴于点N ,再分别以点M 、N 为圆心,大于MN 的长为半径画弧,两弧在第二象限交于点P .若点P 的坐标为(2a ,b+1),则a 与b 的数量关系为( )A .a=bB .2a ﹣b=1C .2a+b=﹣1D .2a+b=16. 为了参加中学生篮球运动会,某校篮球队准备购买10双运动鞋,经统计10双运动鞋尺码(cm )如下表所示:尺码 25 25.5 26 26.5 27购买量(双) 2 4 2 1 1则这10双运动鞋的众数和中位数分别为( )A.25.5 cm 26 cmB.26 cm 25.5 cmC.26 cm 26 cmD.25.5 cm 25.5 cm7. 如图,夜晚,小亮从点A 经过路灯C 的正下方沿直线走到点B ,他的影长y 随他与点A 之间的距离x 的变化而变化,那么表示y 与x 之间的函数关系的图像大致为( )8.如图,曲线AB 是顶点为B ,与y 轴交于点A 的抛物线y=﹣x 2+4x+2的一部分,曲线BC 是双曲线y=的一部分,由点C 开始不断重复“A﹣B ﹣C”的过程,形成一组波浪线,点P (2017,m )与Q (2025,n )均在该波浪线上,过点P 、Q 分别作x 轴的垂线,垂足为M 、N ,连结PQ ,则四边形PMNQ 的面积为( )A .72B .36C .16D .9二、填空题(每小题3分,共30分)9.若21x -在实数范围内有意义,则x 的取值范围是 10.用科学记数法表示0.000031,结果是 .11.已知 是方程组的解,则a ﹣b 的值是12. 若多边形的每一个内角均为108°,则这个多边形的边数为13.如图,直线a∥b,∠1=120°,∠2=40°,则∠3等于(第13题) (第15题) (第17题)14.分解因式:2282b a -=_______.15. 如图,在Rt△ABC 中,CD 是斜边AB 上的中线,已知CD =2,AC =3,则cos A 的值是_______. 16. 若一个圆锥的侧面展开图是半径为18cm ,圆心角为240°的扇形,则这个圆锥的底面半径长是cm.17、如图所示,在矩形ABCD 中,F 是DC 上一点,AE 平分∠BAF 交BC 于点E ,且DE ⊥AF ,垂足为点M ,BE=3,AE=2,则MF 的长是18.抛物线y=ax 2+bx+3(a>0)过A (4,4),B (2,m )两点,点B 到抛物线对称轴的距离记为d ,满足0<d ≤1,则实数m 的取值范围是_______19.(8分)计算:(1)+()﹣1﹣2cos60°+(2﹣π)0(2)解不等式组.20.(8分)先化简,再求值:12)113(2+-÷+-+x x x x x ,其中-2≤x ≤2,请从x 的范围中选入一个你喜欢的值代入,求此分式的值.21.(10分) “端午节”是我国的传统佳节,民间历来有吃“粽子”的习俗.我市某食品厂为了解市民对去年销量较好的肉馅粽、豆沙馅粽、红枣馅粽、蛋黄馅粽(以下分别用A 、B 、C 、D 表示)这四种不同口味粽子的喜爱情况,在节前对某居民区市民进行了抽样调查,并将调查情况绘制成如下两幅统计图(尚不完整).请根据以上信息回答:(1) 将两幅不完整的图补充完整;(2) 本次参加抽样调查的居民有多少人?(3)若居民区有8000人,请估计爱吃D 粽的人数;A D CB 人数 A DC B 40% 10%22.(8分)小明参加某个智力竞答节目,答对最后两道单选题就顺利通关.第一道单选题有3个选项,第二道单选题有4个选项,这两道题小明都不会,不过小明还有一个“求助”没有用(使用“求助”可以让主持人去掉其中一题的一个错误选项).(1)如果小明第一题不使用“求助”,那么小明答对第一道题的概率是 .(2)如果小明将“求助”留在第二题使用,请用树状图或者列表来分析小明顺利通关的概率. (3)从概率的角度分析,你建议小明在第几题使用“求助”.(直接写出答案)23. (8分)如图:在平行四边形ABCD 中,用直尺和圆规作∠BAD 的平分线交BC 于点E (尺规作图的痕迹保留在图中了), 连接EF .(1)求证:四边形ABEF 为菱形;(2)AE ,BF 相交于点O ,若BF =6,AB =5,求AE 的长.24.(10分)A ,B 两地相距120km .甲、乙两辆汽车同时从A 地出发去B 地,已知甲车的速度是乙车速度的1.2倍,结果甲车比乙车提前20分钟到达,求甲车的速度.25.(10分)如图,已知等腰三角形ABC 的底角为30°,以BC 为直径的⊙O 与底边AB 交于点D ,过D 作DE ⊥AC ,垂足为E .(1)证明:DE 为⊙O 的切线;(2)连接OE ,若BC=4,求△OEC 的面积.26.(10分)在平面直角坐标系xOy 中,反比例函数1k y x =的图象与一次函数y 2=ax +b 的图象交于点A (1,3)和B (-3,m ).(1)求反比例函数1k y x=和一次函数y 2=ax +b 的表达式;(2)点C 是坐标平面内一点,BC∥x 轴,AD⊥BC 交直线BC 于点D,连接AC.若,求点C 的坐标.27、(12分)已知:关于x的二次函数y=x2+bx+c经过点(﹣1,0)和(2,6).(1)求b和c的值.(2)若点A(n,y1),B(n+1,y2),C(n+2,y3)都在这个二次函数的图象上,问是否存在整数n,使?若存在,请求出n;若不存在,请说明理由.(3)若点P是二次函数图象在y轴左侧部分上的一个动点,将直线y=﹣2x沿y轴向下平移,分别交x轴、y轴于C、D两点,若以CD为直角边的△PCD与△OCD相似,请求出所有符合条件点P的坐标.28.(12分)对于平面直角坐标系xOy中的点P和⊙C,给出如下定义:若存在过点P的直线l交⊙C于异于点P的A,B两点,在P,A,B三点中,位于中间的点恰为以另外两点为端点的线段的中点时,则称点P为⊙C 的相邻点,直线l为⊙C关于点P的相邻线.(1)当⊙O的半径为1时,①分别判断在点D(,),E(0,﹣),F(4,0)中,是⊙O的相邻点有;②请从①中的答案中,任选一个相邻点,在图1中做出⊙O关于它的一条相邻线,并说明你的作图过程;③点P与点O的距离d满足范围___________________时,点P是⊙O的相邻点;④点P在直线y=﹣x+3上,若点P为⊙O的相邻点,求点P横坐标x的取值范围;(2)⊙C的圆心在x轴上,半径为1,直线y=﹣与x轴,y轴分别交于点M,N,若线段MN上存在⊙C的相邻点P,直接写出圆心C的横坐标x的取值范围.一、选择题CBBCCDAB二、填空题x>0.5; 3.1*10-5; 4; 5; 800;2(a+2b)(a-2b);0.75;12;;x≤3三、解答题19、4 ;-1≤x<320、- (x+2)/x ;-321、(1)C 120人(2)600人;(3)320022、(1)1/3 (2)1/9 (3)第一题23、(1)略;(2)824、每小时72千米25、(1)略(2)26、y=3/x; y=x+2; (-1,-1) (3,-1)27、(1)n=3或n=-5 (2)(-3/4,-3/16) 或(-3/5,-6/25)28、(1)①D、E ②连接OD,过D作OD的垂线交⊙O于A,B两点③ 0≤d≤3且d≠1 ④0≤x≤3(2) 0≤x≤9。

2017-2018梅岭初三期中数学解析

2017-2018梅岭初三期中数学解析

扬州市梅岭中学2017-2018学年第一学期期中初三数学一、选择题(本大题共有8小题,每小题3分,共24分)1.下面轴对称图形中对称轴最多的是()A.矩形B.圆C.等边三角形D.正六边形【答案】B .【考点】轴对称图形的性质【分析】A.矩形有两条,B.圆有无条; C.等边三角形有三条; D.正六边形有六条,故选B2.在Rt△ABC 中,若各边的长度同时都扩大2倍,则锐角A 的正切值()A.扩大2倍 B.缩小2倍 C.不变 D.扩大1倍【答案】C .【考点】三角函数值的定义;【分析】3.下列一元二次方程中,有实数根的是()A.012=+-x x B.0322=+-x x C.012=-+x x D.042=+x 【答案】C .【考点】一元二次方程根的判别式的应用;【分析】解:分别判断ac b 42-=∆与0之间的大小关系,由计算可知C 选项中的△>0.4.用配方法解方程0222=--x x ,原方程可变形为()A.3)1(2=-x B.3)1(2=+x C.7)2(2=+x D.7)2(2=-x 【答案】A【考点】一元二次方程配方法的应用;【分析】解:12122+=+-x x ;3)1(2=-x 故选A.5.已知圆锥的母线长是5cm,侧面积是15πcm 2,则这个圆锥的底面半径是()A. 1.5cmB.3cmC.4cmD.6cm 【答案】B【考点】圆锥的计算;【分析】6.如图,四边形ABCD 内接于圆O ,若四边形ABCO 是平行四边形,则∠ADC 的大小为()A.45°B.50°C.60°D.75°【答案】C【考点】圆内接四边形的性质;平行四边形的性质;圆周角定理【分析】7.如图,圆O 是△ABC 的外接圆,AD 是圆O 的直径,若圆O 的半径为3,AC=2,则sinB 的值是()A.34 B.43 C.23 D.32【答案】D.【考点】锐角三角函数定义;圆周角定理;三角形外心;【分析】8.有一人患流感,经过两轮传染后,共有121人患上了流感,那么每轮传染中平均一个人传染的人数为()A.11人B.10人C.9人D.8人【答案】B.【考点】一元二次不等式的应用【分析】二、填空题(本大题共有10小题,每小3分,共30分)9.正方形网格当中,∠AOB 如图放置,则sin∠AOB 的值为____【答案】34.【考点】比例性质的应用;【分析】10.在△ABC 中,若0|3tan ||3sin |=-+-B A ,则∠C=___°.【答案】90°【考点】绝对值非负性;三角函数特殊值;【分析】解:∵0|33tan ||23sin |=-+-B A 。

江苏省扬州市梅岭中学2017届九年级上学期期中考试数学试题

江苏省扬州市梅岭中学2017届九年级上学期期中考试数学试题

绝密★启用前江苏省扬州市梅岭中学2017届九年级上学期期中考试数学试题试卷副标题考试范围:xxx ;考试时间:91分钟;命题人:xxx学校:___________姓名:___________班级:___________考号:___________注意事项.1.答题前填写好自己的姓名、班级、考号等信息 2.请将答案正确填写在答题卡上第I 卷(选择题)一、单选题(题型注释)1、为了了解某班同学一周的课外阅读量,任选班上15名同学进行调查,统计如表,则下列说法错误的是( )A .中位数是2B .平均数是2C .众数是2D .极差是2二、选择题(题型注释)2、用配方法解方程x 2-4x+1=0时,配方后所得的方程是( )A .(x-2)2=1B .(x-2)2=-1C .(x-2)2=3D .(x+2)2=3第II卷(非选择题)三、填空题(题型注释)3、如图,⊙P的半径为10,A、B是圆上任意两点,且AB=12,以AB为边作正方形ABCD(点D、P在直线AB两侧),若AB边绕点P旋转一周,则CD边扫过的面积为_____四、解答题(题型注释)4、如图,AB是⊙O的直径,,连接ED、BD,延长AE交BD的延长线于点M,过点D作⊙O的切线交AB的延长线于点C.(1)求证:DE=DM.(2)若OA=CD=2,求阴影部分的面积;参考答案1、D2、A3、4、(1)见解析;(2)4﹣π.【解析】1、15名同学一周的课外阅读量为0,1,1,1,1,2,2,2,2,2,2,3,3,4,4,∴中位数为2;平均数为(0×1+1×4+2×6+3×2+4×2)÷15=2;众数为2;极差=4-0=4;所以A、B、C正确,D错误.故选D.2、试题分析:方程x2﹣4x+1=0,变形得:x2﹣4x=﹣1,配方得:x2﹣4x+4=﹣1+4,即(x﹣2)2=3,故选A.【考点】解一元二次方程-配方法.3、连接PA、PD,过点P作PE垂直AB于点E,延长PE交CD于点F,如图所示:∵AB是⊙P上一弦,且PE⊥AB,∴AE=BE= AB=6,∵四边形ABCD是正方形,∴∠DAE=∠ADF=∠DFE=90°,∴四边形AEFD是矩形,∴DF=AE=6,∵若AB边绕点P旋转一周,则CD边扫过的图形为以PF为内圆半径、以PD为外圆半径的圆环.∴S=π•PD2-πPF2=π(PD2-PF2)=πDF2=36π,故答案是:36π.4、试题分析:(1)连接AD,根据弦、弧之间的关系证明DB=DE,证明△AMD≌△ABD,得到DM=BD,得到答案;(2)连接OD,根据已知和切线的性质证明△OCD为等腰直角三角形,得到∠DOC=45°,根据S阴影=S△OCD-S扇OBD计算即可;试题解析:(1)证明:如图,连接AD,∵AB是⊙O直径,∴∠ADB=∠ADM=90°,又∵,∴ED=BD,∠MAD=∠BAD,在△AMD和△ABD中,,∴△AMD≌△ABD,∴DM=BD,(2)解:如图,连接OD,∵CD是⊙O切线,∴OD⊥CD,∵OA=CD=2,OA=OD,∴OD=CD=2,∴△OCD为等腰直角三角形,∴∠DOC=∠C=45°,∴S阴影=S△OCD﹣S扇OBD==4﹣π;∴DE=DM.。

扬州市梅岭中学2017-2018学年初三上英语期中试卷(含答案和听力)

扬州市梅岭中学2017-2018学年初三上英语期中试卷(含答案和听力)

九年级快乐英语阅读检测一、单项选择(共15 小题;每小题1 分,计15 分)1. The 19th CPC National Congress (十九大) is ______big success and we should try our best to build______better world.A. /, aB. /, theC. a, aD. a, the2. ---Although my grandma is seventy years old, she is always in the pink.---Yes. Because she exercises every day and has a balanced diet .Here “in the pink” means ______.A. healthyB. luckyC. beautifulD. creative3. ---Have you heard that Song Zhongji married Song Hye Kyo ?---Yes, The film “Descendants of the Sun”(太阳的后裔) brought them to the ______of us.A. attentionB. celebrationC. introductionD. organization4. --- Boys and girls, no hand ______any other tool can be used in the game, ______ you still need to make itwork. Are you clear about the rules?---Yes, sir.A. and; soB. or; butC. and; butD. or; so5. ---That old man looks weak these days.---Yes .we're sure ____ something is wrong with him and we doubt ______ the disease can be cured.A. if; whetherB. that; thatC. whether; ifD. that; whether6. Parents will ______their children ______making friends when they attend junior high .A. strict with; withB. be strict with; inC. be strict in; withD. strict in; with7. Jim works _____ the chief engineer _____ a big company. He always works ______ high standards.A. for; as; forB. as; in; asC. as; for; toD. for; in; to8. Tan Dun has an amazing gift for art and his music is well worth ______.A. being listened toB. listen toC. listening toD. to listen to9. ______ the students ______their teacher know about the Spud Webb.A. Both…and…B. Not only…but also…C. Neither-…nor…D. Either…or…10. She is a new stude nt in Meiling Middle School and has few close friends. So she doesn’t know ______aboutthe trouble.A. who to talkB. who to talk toC. who to sayD. what to talk11. ---What do you think of the white dress?--- I ______its style, but I ______ not choose it because of its price.A. would rather; preferB. prefer; preferC. would rather; would ratherD. prefer; would rather12. Could you tell me _______?A. what she had done with the newspapersB. how we can call this ladyC. what is wrong with the little boyD. which gate I should go13. ---How do you like your new school?--- Wonderful. When I ______ trouble, many teachers and students will help me.A. look intoB. get intoC. cut intoD. break into14. When you visit a museum, some instructions should ______and we’d better not ______ them.A. pay attention to ; be against B .be paid attention ; againstC. be paid attention to ; againstD. be paid attention to ; be against15. ---Many people think women are better at cooking than men .--- ______.Most top cooks in the world are men .A I agreeB ExactlyC Not at allD That ’s not the case二、完形填空(共15小题;每小题1分,满分15分)After their business trip, John and Mary returned happily, hoping to see their lovely 36 . As they drove into their home town, they noticed a lot of 37 , and they went off their usual way to see what it was. They found a house 38 fire. Mary said, “Oh, well, it isn’t our fire, let’s go home.”But John 39 closer and screamed, “That was Fred Jones’ home. He wouldn’t come home from workyet, maybe there is something we could do.” “It has 40 to do with us,” Mary disagreed.But John drove up and stopped. A woman on the lawn was 41 , “The children! Get the children!” John shouted at her, “Tell us where the children are!” “In the 42 ,” answered the woman loudly, “down the hall and to the left.”Though Mary disagreed, John 43 into the bathroom that was full of smoke and terribly hot. He found the door and two children. As he left, he could hear some more crying. He passed the two badly scared children onto waiting arms and 44 how many more children were down there. They told him 45 more and Mary caught his arm and cried, “John! Don’t go back! It’s dangerous! That house will fall down any second.”But he ran into the smoke-filled hallway and at last he found both children. As he climbed up the stairs, the thought went 46 his mind that there was something strange about the little bodies next to 47 , and at last when they came out into the 48 and fresh air, he found that he had just 49 his own children.The baby-sitter (保姆) working for John and Mary had left their children at Fred Jones’ home50 she was doing some shopping.36.A. dog B. father C. friend D. children.37.A. light B. smoke C. water D. rubbish38. A. in B. at C. on D. of39. A. ran B. walked C. drove D. rode40. A. everything B. anything C. nothing D. something41. A screaming B. saying C. talking D. speaking42. A. bathroom B. kitchen C. bedroom D. hall43. A. turned B. searched C. fell D. rushed44. A. thought B. said C. asked D. found45. A. five B. four C. three D. two46. A. across B. through C. up D. onto47. A. it B. him C. them D. her48. A. sunlight B. ground C. lawn D. field49. A. saved B. found C. lost D. missed50. A. while B. after C. so D. until三、阅读理解(共15小题;每小题2分,计30分)A. Breakfast.B. Lunch.C. Dinner.D. Three meals.52. What can you visit on the second day?A. The Great Wall and the Forbidden City.B. The Temple of Heaven and the Great Wall.C. Tian’anme n Square and the Summer Palace.D. The Forbidden City and the Temple of Heaven.53.According to the form, where is a good place to shop for Chinese goods and souvenirs ?A. Tian’anmen SquareB. The Forbidden CityC. Xiushui StreetD. the Summer Palace54. The passage is most likely to be taken from .A. a travel guideB. an instructionC. a newspaperD. an advertisementBThese days shared bikes are becoming the center of attention in my WeChat friend circle. Many of my friends are sharing photos of themselves riding bikes, especially during the weekend in natural parks, and I can see people logging in (登录) and out of shared bike apps.I’m very happy that there are shared bikes on the road. They have saved us a lot of time during special situations, and on beautiful, clear days, people enjoy riding them outside the city.I tried shared bikes last week, and I didn’t like them very much. I think the first shared bikes without baskets are designed for athletes. They are very hard to ride, and the seats are not comfortable. It makes me wonder whether people really like riding shared bikes or are just saying this to agree with others.A friend secretly told me she tried the bikes to fit in. She doesn’t like bikes and finds Beijing’s roads too hard for bike riding. But recently, the only way to hang out with her friends is riding out of town together. To join in social activities, she had to pick up bike riding again.Another friend admitted that he started talking about and sharing photos on shared bikes in order just to appear modern and fashionable to friends. He started paying attention when shared bikes first came into use.These views will give me something new to think about when I ride these bikes again.55. What does the writer himself think of shared bikes?A. They are very difficult to ride.B. Their seats are comfortable.C. Athletes like shared bikes.D. They can save us a lot of money.56. The underlined word “admitted” may mean _______________ in the passage.A. told a lieB. told the truthC. kept a promiseD. kept a secret57 Which of the following is NOT true according to the passage?A. It’s quite simple to use shared bikes at special time.B. Some people only appear to be interested in shared bikes.C. The writer likes the bikes without baskets because they are for athletes.D. Some people like to share photos riding bikes because they want to agree with others.CWhen you cough or sneeze, you’d better turn your head away from others and coveryour mouth with the full part of your hand. And then, you should say, “Excuse me.”This seems so simple, but it is surprising how many kids have never been told to do this.Actually, I notice adults all the time who cough and sneeze in public without placing a handover the mouth. One important thing I point out to the kids is that after they sneeze or coughon their hands, they should wash their hands as soon as possible. If not, they will be passing those germs (细菌) along to everything and everyone they touch.If you come to a door and someone is following you, hold the door. If the door opensby pulling, pull it open, stand to the side, and allow the other person to pass through first,then you can walk through. If the door opens by pushing, hold the door after you passthrough.After a few weeks of seeing kids try to get through doors in the school and watchingthem enter restaurants as the door hit other people, I knew I had to discuss the problem withmy students. Teaching them small acts of kindness, such as letting someone else go through a door first as theyhold it open, may seem unimportant, but it can go along way toward helping students realize how to be polite and thank others. Once they’ve been told, they’re halfway there.When we have to go up moving stairs, we will stand to the right. That will give otherswho are in a hurry a choice of walking up the left-hand side of the moving stairs. Whenwe are going to enter a lift, the underground, or a doorway, we will wait for others to exitbefore we enter.After college when I moved to London, I was surprised at how polite everyone was in the subways. I was even more touched when I traveled to Japan. In both places, people madeefforts to make way for others. On moving stairs, everyone stood to the right and walked to the left. On lifts, everyone would stand over to the side and allow others to exit before they would begin to enter.58. When you cough or sneeze, you should ________.A. touch everythingB. cover your mouthC. point out to the kidsD. pass the germs to others59. If you come to a door and someone is following you, you’d better _______.A. hold the doorB. pass throughC. close the doorD. stand to the side60. Why should we stand to the right of moving stairs?A. Becaus e it’s dangerous to stand to the left.B. Because it’s a traffic rule which we must follow.C. Because we must wait for others to move first.D. Because we should make way for people in a hurry.61. From the passage we can know the writer is a ________.A. doctorB. travelerC. parentD. teacher62. A. The passage is mainly about ______.A. the rules of acts in publicB. the ways of communicationC. the problems of meeting peopleD. the knowledge of social lifeDMany people think that keeping a diary is something that teenage girls do. It’s seen as a place to write down secrets, things you don’t want anyone else to know. The stereotype (模式化观念) is that only women keep diaries. In fact, keeping a diary is a very old tradition. It can be useful for many different types of people. Many famous people have kept diaries. Many powerful people have kept diaries. Some of these people include famous writers and presidents.Keeping a diary is said to have health advantages. Studies show that keeping a diary, that is, writing out thoughts daily, can reduce asthma symptoms (哮喘症状).Writing uses your left brain, which is thoughtful and organized. While your left brain is busy, your right brain is free to create and feel. This allows you to use all of your brain power to better understand yourself, others, and the world around you.The key to successful diary keeping is not stopping any thoughts from coming through. This even means allowing thoughts that influence you to come out in your writing. It helps make your feelings clearer, and is especially useful if a person is faced with a hard decision. Sometimes just writing down the ideas you agree and disagree helps you better understand a problem. You begin to see a problem from different ways. This is helpful if you don’t agree with others.63. What does the word “it” in Paragraph 4 mean?A. Keeping away from illness.B. Using your right brain to create.C. Stopping some thoughts coming through.D. Allowing thoughts to come out in your diary.64. According to the passage, keeping diaries can help ______.A. get along with othersB. understand things betterC. know more about the old traditionD. become famous in the future65. What is the main idea of the passage?A. The advantages of keeping diaries.B. Keeping a diary with your left brain.C. The ways of keeping a diary successfully.D. The reasons girls like keeping diaries.第II卷(60分)四. 词汇运用(共10小题;每小题1分,计10分)根据句子意思,用括号中所给汉语提示或英文单词的适当形式填空(每空一词)66. The project he devoted much time to ________ (success) at last.67. His grandfather passed away in________ (peaceful) in his sleep.68. The man wants to live a more comfortable and________ (simply) life .21教育网69. We must first learn about the correct________ (pronounce) of all the words.70. I can clearly see the________ (sad) in her eyes. What has happened to her?71. Do you know how the matter was________ (处理)with yesterday?72. Both of his parents are busy because they work in different ________ (大学).73. The old________挂历) bought from the old things market years ago look beautiful.74. Paper cut is a ________ (传统) Chinese skill with a history of thousands of years.75. She told me her happy childhood without________ (提及)that sad story.五、任务型阅读(计10分)阅读下列短文,根据短文中的信息完成文后表格。

扬州市梅岭中学-2017初三期中测试及答案

扬州市梅岭中学-2017初三期中测试及答案

扬州市梅岭中学-2017初三期中测试及答案扬州市梅岭中学 2017--2018学年第一学期期中考试试卷初三年级英语(时间:100 分钟;命题人:龙英审核人:花永琴)第I 卷(80分)一、听力测试(共 20 小题;每小题 1 分,计 20 分)第一部分听对话本部分共有10道小题,每小题你将听到一段对话,每段对话听两遍。

( ) 1. What will the boy take part in today?A. B. C.( ) 2. What is Ann’s animal sign?A. B.C.( ) 3. What is the girl’s dream?A. B. C.第 2 页共 17 页( ) 4. How did the man go to the football match?A. B. C.( ) 5 What colour may represent Jenny’s feeling now?A. Blue.B. Red.C. Green.( ) 6. What does the man think of his cousin?A. Energetic.B. Curious.C. Creative.( ) 7. What is Mrs. Black like?A. Tall.B. Smart.C. Serious.( ) 8. Where does this dialogue probably take place?A. In a clothes shop.B. In a library.C. In a hospital.( ) 9. What does the girl mean?A. She doesn’t like swimming.B. She can’tgo swimming with Tom.C. She will go swimming with her mother. ( ) 10. When did the man become an Art teacher?A. In 2004.B. In 2006.C. In 2008.第二部分听对话和短文答题听一段对话,回答第11至12小题。

江苏省扬州梅岭中学九年级物理上学期期中试题 苏科版

江苏省扬州梅岭中学九年级物理上学期期中试题 苏科版

扬州市梅岭中学九年级物理期中试卷一、选择题(每小题2分,共24分。

每小题给出的四个选项中只有一个选项正确)1.如图所示,所使用杠杆属于费力杠杆的是()2.炎热的夏天,小玥与家人到青岛度假,她站在沙滩上脚感到烫,而当她站在海水中时脚却感到凉,这主要是因为水和沙子具有不同的()A.热量 B.热值 C.内能 D.比热容3.为了探究杠杆的平衡条件.物理老师带来了一个自制枉杆以AB。

从其上找一点C用支架支起来,如图所示,当小强依次在杠杆上的A1、A2、A等各点施加一个向下的力时。

发现越来越容易提起水桶。

根据这一实验现象大家提出的以下四个问题.其中最有探究价值且易于探究的科学问题是()A.水桶重和位置不变,杠杆平衡时,为什么施力点离支点越远就越省力?B.水桶重和位置不变,杠杆平衡时,动力和动力臂之间存在着怎样的关系?C.阻力和阻力臂不变,杠杆平衡时,动力和动力臂之间存在着怎样的关系?D.杠杆平衡时,动力和动力臂、阻力和阻力臂之间存在着怎样的关系?4.如图所示,用完全相同的两个滑轮组,分别将重为G1、G2的两个物体匀速提升相同的高度(绳重、摩擦不计),若G1>G2,提升重物所做的有用功分别为W1、W2,机械效率分别为η1、η2,则下列判断正确的是()A.W1>W2、η1>η2 B.W1>W2、η1=η2C.W1>W2、η1<η2 D.W1=W2、η1>η25.爷爷与小丽进行爬楼比赛,他们都从1楼上到6楼。

爷爷的体重是小丽体重的2倍,爷爷所用的时间是小丽所用时间的2倍。

若爷爷做功为W1,功率为P1,小丽做功为W2,功率为P2,则下列判断正确的是()A.W1∶W2=1∶1 B.W1∶W2=4∶1C.P1∶P2=1∶1 D.P1∶P2=4∶16.下列关于热现象的说法中正确的是()A.火箭使用液态氢作燃料,是因为液态氢含有的热量多B.0℃的水变成0℃的冰,温度不变,内能不变C.物体内能增加,一定是从外界吸收了热量D.内能可以从高温物体转移到低温物体7.如图所示,开关闭合,两个灯泡都不亮,电流表指针几乎不动,而电压表指针有明显偏转,该电路故障可能是()A.电流表开路,并且L1、L2灯丝断了B.L1灯丝断了C.灯泡L2开路 D.灯泡L1短路8.如图是某品牌榨汁机。

初中物理九年级江苏省扬州市梅岭中学新部编版物理上学期期中考模拟试题 及答案.docx

初中物理九年级江苏省扬州市梅岭中学新部编版物理上学期期中考模拟试题 及答案.docx

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(每空xx 分,共xx分)试题1:如图所示的杠杆中,使用时利用了其省距离特点的是()试题2:跳远运动的几个阶段如图所示,则运动员()A.助跑阶段机械能不变B.起跳时机械能为零C.经过最高点时动能最大D.经过最高点时重力势能最大试题3:评卷人得分CCTV科教频道曾报道:有一辆小车载人后停在水平放置的地磅上时,左前轮、右前轮、左后轮、右后轮对地磅的压力分别为5000N、4000N、3000N、2000N。

假设该小车四个轮子的轴心围成一个长方形,O为几何中心,AB、CD为两条对称轴,如图所示。

若再在车上放一重物,能使整辆车所受重力的作用线通过O点,则该重物的重心应落在()A.AOC区域上B.BOC区域上 C.BOD区域上 D.AOD区域上试题4:小明和小雯一起打扫教室卫生,如图所示,他们提着一桶水沿水平方向匀速行走的过程中,以下说法错误的是()A.水桶的重力没有做功B.地面对小明的支持力做了功C.桶底对水的支持力没有做功D.小明和小雯提桶的力没有做功试题5:如图所示的三种场景中,拉力F1、F2、F3大小相等,在拉力的作用下物体移动的距离也相等.若拉力所做的功分别记为W1、W2、W3,下列关于它们大小关系的判断中正确的是()A. W1=W2=W3B. W1<W2<W3C. W2<W1<W3D. W1=W2<W3试题6:一个滑轮组经改进后提高了机械效率,用它将同一物体匀速提升同样的高度,改进后与改进前相比()A.有用功减少,总功减少B.有用功增加,总功增加C.有用功不变,总功减少D.有用功不变,总功不变试题7:在“比较质量相等的不同燃料充分燃烧时放出的热量”的活动中,小明发现分别使5g的酒精和5g的碎纸片充分燃烧后,被它们加热的各100g、25℃的水的温度分别上升到80℃和45℃.这说明()A.燃烧酒精总比燃烧碎纸片放出的热量多 B.酒精的热值比碎纸片的热值大C.酒精的内能比碎纸片内能大得多 D.酒精含有的热量比碎纸片大得多试题8:各种家用电器中电流的大小通常是不相同的,下图中几种常见的家用电器正常工作的电流最接近4A的是()试题9:某种电脑键盘清洁器有两个开关,开关S1只控制照明用的小灯泡L,开关S2只控制吸尘用的电动机M。

2017届江苏省扬州市梅岭中学九年级下学期第一次模拟考试数学试卷(带解析)

2017届江苏省扬州市梅岭中学九年级下学期第一次模拟考试数学试卷(带解析)

绝密★启用前2017届江苏省扬州市梅岭中学九年级下学期第一次模拟考试数学试卷(带解析)试卷副标题考试范围:xxx ;考试时间:89分钟;命题人:xxx学校:___________姓名:___________班级:___________考号:___________注意事项.1.答题前填写好自己的姓名、班级、考号等信息 2.请将答案正确填写在答题卡上第I 卷(选择题)一、单选题(题型注释)1、函数的自变量x 的取值范围是______.【答案】【解析】根据题意可得x+2≠0; 解得x≠2. 故答案为x≠2.2、我国最大领海南海的面积有3500000平方公里,3500000用科学记数法表示为______.【答案】【解析】将3500000用科学记数法表示为:3.5×106. 故答案为:3.5×106.试卷第2页,共21页3、如图1,△ABC 是一块等边三角形场地,点D ,E 分别是AC ,BC 边上靠近C 点的三等分点.现有一个机器人(点P )从A 点出发沿AB 边运动,观察员选择了一个固定的位置记录机器人的运动情况.设AP =x ,观察员与机器人之间的距离为y ,若表示y 与x 的函数关系的图象大致如图2所示,则观察员所处的位置可能是图1的( )A .点BB .点CC .点DD .点E【答案】C【解析】当观察员所处的位置在点B 时,y 随x 的增大而减小,与图2不符,故选项A 错误;当观察员所处的位置在点C 时,y 随x 的增大先减小再增大,且减小与增大的距离相等,故选B 错误;当观察员所处的位置在点D 时,y 随x 的增大先减小再增大,由大变小的距离小于由小变大的距离,故选项C 正确;当观察员所处的位置在点E 时,y 随x 的增大先减小再增大,由大变小的距离大于由小变大的距离,故选项D 错误; 故选C.点睛:这是一个动点问题的函数图象的问题,根据题意可以得到当观察员分别处于选项中的各点时,y 随x 的增大如何变化,从而可以得到哪个选项是正确的.4、在如图所示的低碳、节水、节能和绿色食品这四个标志中,是轴对称图形的是( )A .B .C .D .【答案】D【解析】A. 不是轴对称图形,故此选项错误; B. 不是轴对称图形,故此选项错误; C. 不是轴对称图形,故此选项错误;D. 是轴对称图形,故此选项正确; 故选:D. 5、代数式的最小值是( ) A .-1B .1C .D .2【答案】C【解析】∵x 2−2x−1=(x−1)2−2,二次项系数为1>0, ∴代数式x 2−2x−1有最小值为−2. 故选D.6、下列计算正确的是( ) A .a 3+a 2=a 5B .a 6÷a 3=a 2C .(a 2)3=a 8D .a 2·a 3=a 5【答案】D【解析】A. a 3和a 2不能合并,故此选项错误; B. a 6÷a 3= a 3,故此选项错误; C. (a 2)3=a 6,故此选项错误; D. a 2⋅a 3=a 5,故此选项正确; 故选:A.二、选择题(题型注释)7、已知菱形的两条对角线长分别为6和8,则该菱形的对称中心到任意一边的距离为( ) A .10B .5C .2.5D .2.4【答案】D 【解析】试题分析:如图所示,∵菱形ABCD 中,AC=6,BD=8,∴AC ⊥BD ,OA=AC=3,OB=BD=4,∴AB=,试卷第4页,共21页∴点O 到AB 的距离=.故选D .考点:菱形的性质;勾股定理 8、下列四个数中,是无理数的是 ( )A .B .C .D .()2【答案】A【解析】试题分析:根据无理数是无限不循环小数,可得A. 是无理数,B .,C .,D .是有理数,故选:A . 考点:无理数9、一个几何体的主视图和左视图都是边长为2 cm 的正三角形,俯视图是一个圆,那么这个几何体的侧面积是( ) A .π cm 2B .π cm 2C .2π cm 2D .4π cm 2【答案】C【解析】试题分析:综合主视图,俯视图,左视图可以看出这个几何体应该是圆锥,且底面圆的半径为1,母线长为2, 因此侧面面积为2×π×1×2÷2=2πcm 2. 故选C .考点:由三视图判断几何体;圆锥的计算 10、下列说法正确的是( )A .要了解一批灯泡的使用寿命,采用全面调查的方式B .要了解全市居民对环境的保护意识,采用抽样调查的方式C .一个游戏的中奖率是1%,则做100次这样的游戏一定会中奖D.若甲组数据的方差S甲2=0.05,乙组数据的方差S乙2=0.1,则乙组数据比甲组数据稳定【答案】B【解析】试题分析:A、要了解一批灯泡的使用寿命,采用抽样调查的方式,故本选项错误;B、要了解全市居民对环境的保护意识,采用抽样调查的方式,故本选项正确;C、一个游戏的中奖率是1%,则做100次这样的游戏不一定绝对会中奖,故本选项错误;D、若甲组数据的方差S甲2=0.05,乙组数据的方差S乙2=0.1,则甲组数据比乙组数据稳定,故本选项错误.故选B.考点:方差;全面调查与抽样调查;概率的意义.试卷第6页,共21页第II 卷(非选择题)三、填空题(题型注释)11、分解因式______.【答案】.【解析】试题分析:要将一个多项式分解因式的一般步骤是首先看各项有没有公因式,若有公因式,则把它提取出来,之后再观察是否是完全平方公式或平方差公式,若是就考虑用公式法继续分解因式.因此,先提取公因式a 后继续应用平方差公式分解即可:.考点:提公因式法和应用公式法因式分解012、如图,△ABC 内接于⊙O ,半径为5,BC =6,CD ⊥AB ,则tan ∠ACD 的值为______.【答案】【解析】作直径BE ,连接CE ,作CF ⊥BE 于点F. ∵CF ⊥BE ,CD ⊥AB 又∵∠A =∠E ,∴∠ECF=∠ACD.∵BE是直径,CF⊥BE,∴∠BCE=90∘,∠EBC=∠ECF=∠ACD,∴EC=,∴tan∠EBC=.∴tan∠ACD=tan∠EBC=.故答案是:.13、如图,在正十边形A1A2A3A4A5A6A7A8A9A10中,连接A1A4、A1A7,则∠A4A1A7=______°.【答案】54【解析】如图,连接A7O,A4O,∵正十边形的各边都相等,∴∠A7OA4=310×360∘=108∘,∴∠A4A1A7=12×108∘=54∘.故答案为:54.试卷第8页,共21页14、如图,把等腰直角三角尺的直角顶点放在直尺的一边上,则∠1+∠2=______°.【答案】135【解析】∵△ACB 是等腰直角三角形, ∴∠ACB=90∘,∠A=∠B=45∘, ∵EF ∥MN , ∴∠1=∠ACM , ∵∠2=∠B+∠BCM ,∴∠1+∠2=∠ACM+∠B+∠BCM=∠ACB+∠B=90∘+45∘=135∘, 故答案为:135°.15、小林、小芳和小亮三人玩飞镖游戏,各投5支飞镖,规定在同一圆环内得分相同,中靶和得分情况如图,则小亮的得分是________分.【答案】21【解析】设掷中A 区、B 区一次的得分分别为x ,y 分,依题意得:,解这个方程组得:,则小亮的得分是2x +3y =6+15=21分。

【推荐】扬州市梅岭中学九年级语文期中试卷

【推荐】扬州市梅岭中学九年级语文期中试卷

扬州市梅岭中学九年级语文期中试卷(考试时间:150分钟满分:150分)说明:1.本试卷共6页,包含选择题(第1—6题、第13题,共7题)、非选择题(第7—12题、第14—24题,共17题)两部分。

考试结束后,请将本试卷和答题卡一并交回。

2.答题前,考生务必将本人的姓名、准考证号填写在答题卡相应的位置上,同时务必在试卷的装订线内将本人的姓名、准考证号、毕业学校填好。

3.所有的试题都必须在专用的“答题卡”上作答,选择题用2B铅笔作答,非选择题在指定位置用0.5毫米黑色水笔作答。

在试卷或草稿纸上答题无效。

一、积累运用(35分)1.下列词语中加点字的注音完全正确的.....一项是(2分)A.匀称.(chèng) 老妪.(ōu) 惬.意(qiè)B.阴晦.(huì) 嗤.笑(chī) 愕.然(è)C.差.使(chā) 摩挲.(suō) 哺.育(fǔ)D.悲恸.(dòng) 韵.味(yùn) 菜肴.(xiáo)2.下列句子中,标点符号使用正确的...一项是(2分)A.面对西南百年未遇的旱情,我们能无动于衷吗?我们能不尽自己的绵薄之力帮助他们吗?B.“我们要引起重视,”他说:“道德良知是每个公民应该具备的素质,尤其是文化工作者!”C.美国纽约、日本东京、中国的北京、上海,这些大都市都有申办大型国际会议的实力。

D.不少人一味追逐名牌,用有名的香水、手机、服装……等来显示自己生活品质高人一等。

3.下列各句中,加点的成语使用恰当的...一项是(2分)A.写成一本书一直是我的理想,有本书面世,我就会成为著作等身....的作家。

B.运河博览城永久性会址的建设,明显带动了周边的开发,在潜移默化....中取得了经济效益。

C.老师只读了一部分便说出了文章的主旨,这种断章取义....的能力赢得了同学们热烈的掌声。

D.小说以诡异的想像,突破时空,突破神、人的界限,创造了一个光怪陆离....的魔幻世界。

2017届江苏省扬州市梅岭中学九年级下学期第一次模拟考试化学试卷(带解析)

2017届江苏省扬州市梅岭中学九年级下学期第一次模拟考试化学试卷(带解析)

试卷第1页,共9页绝密★启用前2017届江苏省扬州市梅岭中学九年级下学期第一次模拟考试化学试卷(带解析)试卷副标题考试范围:xxx ;考试时间:78分钟;命题人:xxx学校:___________姓名:___________班级:___________考号:___________注意事项.1.答题前填写好自己的姓名、班级、考号等信息 2.请将答案正确填写在答题卡上第I 卷(选择题)一、选择题(题型注释)1、下列有关分子与原子的说法不正确的是( ) A .温度越高分子的运动速度越快 B .在化学反应中分子可分,原子不可再分 C .气体受热后由分子的体积增大而体积膨胀 D .分子可构成物质,原子也可直接构成物质2、下列图象能正确反映对应变化关系的是A .在一定温度下,向不饱和的硝酸钾溶液中加入硝酸钾固体,充分搅拌试卷第2页,共9页B .向NaOH 溶液中逐滴加入稀盐酸C .将一定质量的稀盐酸平均分为两份,分别向其中加入足量的金属Zn 和FeD .在一定量CuCl 2和HCl 溶液中逐滴加入NaOH 溶液3、下列各项指定数据描述正确是 A .凝固点:氯化钠溶液>水 B .硬度:铜>黄铜C .二氧化碳的体积分数:人体呼出的气体>人体吸入的气体D .溶液温度:硝酸铵溶于水<氢氧化钠溶于水试卷第3页,共9页第II 卷(非选择题)二、选择填充题(题型注释)4、含杂质的Fe 2O 3固体样品20g ,高温下用足量的CO 完全还原(杂质不与CO 反应),将生成的CO 2气体用足量的澄清石灰水充分吸收后,产生30g 白色沉淀。

则下列说法正确的是A .通入的CO 质量为8.4gB .反应后剩余固体质量为11.2gC .样品中氧化铁的质量分数为80%D .样品中氧元素质量分数一定为24%5、下列除去杂质的方法中,正确的是A. AB. BC. CD. D6、下列容器中为直接加热的玻璃容器的有 A .烧杯B .试管C .蒸发皿D .锥形瓶7、甲、乙两种物质的溶解度曲线如图所示。

扬州市梅岭中学2016-2017学年第一学期九月测试 英语试卷(含听力和答案)

扬州市梅岭中学2016-2017学年第一学期九月测试 英语试卷(含听力和答案)

扬州市梅岭中学2016-2017学年第一学期九月测试初三年级英语(时间:100分钟;命题人:周瑶;审核人:陈国红)第一卷(选择题,共80分)听力原稿A. 听下面10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。

每段对话读两遍。

1 W : Do you go to work by bike every day, jack?M: yes, but when it rains I usually takes a bus.2 w :which pen did you buy yesterday ?M : I bought the most expensive one, I think it is the best.3 W : Did you watch the weather report yesterday evening ?M: yes, it‘s said it will be windy this afternoon.4 W: What does your son do in the evening?M: Most children like watching cartoons.5 W: How did you usually go to school?M : I usually go by bus. But this morning I walked to school.6 W: What are you going to be after you finish school?M: I‘d like to be a teacher.7 W:: would you please tell me when Susan will arrive ?M :At half past four. But there will be so much traffic, she needs another 15 minutes.8 W : Excuse me, can you show me the nearest restaurant ?M : Yes, it‘s only 15 minutes ‗walk9 W : I feel so weak these days. I‘m not interested in anything .What should I do ?M:: you should have a good rest. You can wear red because it will make you look more powerful. Thank you for your advice.10 W: what can I do for you ?M: I bought the shirt here yesterday. I like the color and style . but can you change it for a larger one ?B. 听下面两段对话和一篇短文。

【精品】2016-2017年江苏省扬州市邗江区梅岭中学九年级上学期期中物理试卷带答案

【精品】2016-2017年江苏省扬州市邗江区梅岭中学九年级上学期期中物理试卷带答案

2016-2017学年江苏省扬州市邗江区梅岭中学九年级(上)期中物理试卷一、选择题(每小题2分,共24分.每小题给出的四个选项中只有一个选项正确)1.(2分)如图所示的杠杆中,使用时利用了其省距离特点的是()A.开瓶器B.老虎钳C.核桃夹D.食品夹2.(2分)各种家用电器中电流的大小通常是不相同的,如图中几种常见的家用电器正常工作时电流最大的是()A.电饭锅B.电冰箱C.电视机D.电风扇3.(2分)如图所示的事例中,物体机械能增加的是()A.随直升机匀速上升的救灾物资B.落地又弹起的皮球C.缓缓降落的神舟飞船返回舱D.上升的滚摆4.(2分)对于如图中所示的四幅图,下列说法中正确的是()A.软木塞飞出时,管内水蒸气的内能增加B.酒精热值的大小是通过酒精燃烧时间的长短来反映的C.卫星的重力势能转化为动能D.学生背着书包在水平地面匀速前进,学生对书包没有做功5.(2分)如图所示,将同一物体分别沿光滑的斜面AB、AC以相同的速度从底部匀速拉到顶点A,已知AB>AC,施加的力分别为F1、F2,拉力做的功为W1、W2,拉力做功的功率分别为P1、P2,则下列判断中正确的是()A.F1<F2,W1=W2,P1<P2B.F1>F2,W1>W2,P1>P2C.F1<F2,W1<W2,P1<P2D.F1<F2,W1=W2,P1>P26.(2分)下列现象中,通过热传递来改变内能的是()A.给冷水加热B.压缩空气温度升高C.下滑时臀部发热D.搓手取暖7.(2分)如图所示,电流表连接正确的是()A.B.C.D.8.(2分)小明和同组同学利用如图所示的a、b两个电路进行“串联电路合并联电路的比较”的探究活动,在保持电源电压不变的条件下,他们所记录的实验结果如下。

你认为其中不可能的是()A.在a电路中,当灯L1和灯L2都发光时,取下灯L1,灯L2将会熄灭B.在a电路中再串联一个小灯泡,接通电路后,灯L1和灯L2发光会变暗C.在b电路中,当灯L1和灯L2都发光时,取下灯L1,灯L2将会熄灭D.在b电路中,当灯L1和灯L2都发光时,取下灯L1,灯L2将不会熄灭9.(2分)如图所示,在“○”处可以连接电流表或电压表测量电路中的电流、电压,为使L1与L2串联,以下做法正确的是()A.a为电流表,b为电压表,c为电流表B.a为电压表,b为电压表,c为电流表C.a为电流表,b为电流表,c为电压表D.a为电流表,b为电流表,c为电流表10.(2分)两个相同的烧杯装有质量和初温都相同的水和食用油,用相同的电加热器分别给它们加热相同的时间,则下列说法中正确的是()A.水吸收的热量多 B.水上升的温度较高C.它们吸收的热量相同D.它们上升的温度相同11.(2分)如图所示,闭合开关S时,灯泡L1、L2都不亮。

江苏省扬州市梅岭中学2016-2017学年九年级上第一次月考数学试卷含答案解析

江苏省扬州市梅岭中学2016-2017学年九年级上第一次月考数学试卷含答案解析

江苏省扬州市梅岭中学2016-2017学年九年级(上)第一次月考数学试卷(解析版)一、精心选一选1.已知关于x的方程,(1)ax2+bx+c=0;(2)x2﹣4x=0;(3)1+(x﹣1)(x+1)=0;(4)3x2=0中,一元二次方程的个数为()个.A.1 B.2 C.3 D.42.一元二次方程x2﹣8x﹣1=0配方后可变形为()A.(x+4)2=17 B.(x+4)2=15 C.(x﹣4)2=17 D.(x﹣4)2=153.一元二次方程x2+x﹣1=0的根的情况是()A.有两个不相等的实数根 B.有两个相等的实数根C.没有实数根D.无法判断4.如图,AB是⊙O直径,∠AOC=130°,则∠D=()A.65°B.25°C.15°D.35°5.在数轴上,点A所表示的实数为3,点B所表示的实数为a,⊙A的半径为2.下列说法中不正确的是()A.当a<5时,点B在⊙A内B.当1<a<5时,点B在⊙A内C.当a<1时,点B在⊙A外D.当a>5时,点B在⊙A外6.如图,在平面直角坐标系中,点A、B、C的坐标分别为(1,4)、(5,4)、(1,﹣2),则△ABC外接圆的圆心坐标是()A.(2,3) B.(3,2) C.(1,3) D.(3,1)7.下列命题正确的个数是()(1)直径是圆中最大的弦.(2)长度相等的两条弧一定是等弧.(3)半径相等的两个圆是等圆.(4)面积相等的两个圆是等圆.(5)同一条弦所对的两条弧一定是等弧.A.2 B.3 C.4 D.58.如图,在平面直角坐标系xOy中,以原点O为圆心的圆过点A(13,0),直线y=kx﹣3k+4与⊙O交于B、C两点,则弦BC的长的最小值为()A.22 B.24 C.10D.12二、细心填一填9.一元二次方程x2=x的解为.10.若关于x的一元二次方程kx2﹣2x﹣1=0有两个不相等的实数根,则实数k的取值范围是.11.若矩形的长和宽是方程2x2﹣16x+m=0(0<m≤32)的两根,则矩形的周长为.12.关于x的一元二次方程(m﹣1)x2+x+m2﹣1=0有一根为0,则m=.13.在实数范围内定义一种运算“*”,其规则为a*b=a2﹣b,根据这个规则,方程(x﹣1)*9=0的解为.14.如图,AB是⊙O的直径,弦CD∥AB.若∠ABD=65°,则∠ADC=度.15.学校课外生物小组的试验园地是长35米、宽20米的矩形,为便于管理,现要在中间开辟一横两纵三条等宽的小道(如图),要使种植面积为600平方米,求小道的宽.若设小道的宽为x米,则可列方程为.16.如图,以AB为直径的半圆O上有两点D、E,ED与BA的延长线交于点C,且有DC=OE,若∠C=20°,则∠EOB的度数是.17.如图所示,动点C在⊙O的弦AB上运动,AB=,连接OC,CD⊥OC交⊙O于点D.则CD的最大值为.18.如果关于x的一元二次方程ax2+bx+c=0有两个实数根,且其中一个根为另一个根的2倍,则称这样的方程为“倍根方程”,以下关于倍根方程的说法,正确的是.(写出所有正确说法的序号)①方程x2﹣x﹣2=0是倍根方程;②若(x﹣2)(mx+n)=0是倍根方程,则4m2+5mn+n2=0;③若点(p,q)在反比例函数y=的图象上,则关于x的方程px2+3x+q=0是倍根方程.三、用心做一做(共10题,共96分)19.(10分)解方程:(1)2x2﹣4x+1=0(2)x(x+4)=﹣5(x+4).20.(8分)已知x1=﹣1是方程x2+mx﹣5=0的一个根,求m的值及方程的另一根x2.21.(8分)东台市为打造“绿色城市”,积极投入资金进行河道治污与园林绿化两项工程,已知2013年投资1000万元,预计2015年投资1210万元.若这两年内平均每年投资增长的百分率相同.(1)求平均每年投资增长的百分率;(2)按此增长率,计算2016年投资额能否达到1360万?22.(8分)每位同学都能感受到日出时美丽的景色.右图是一位同学从照片上剪切下来的画面,“图上”太阳与海平线交于A﹑B两点,他测得“图上”圆的半径为5厘米,AB=8厘米,若从目前太阳所处位置到太阳完全跳出海面的时间为16分钟,求“图上”太阳升起的速度.23.(10分)在等腰△ABC中,三边分别为a、b、c,其中a=5,若关于x的方程x2+(b+2)x+6﹣b=0有两个相等的实数根,求△ABC的周长.24.(10分)如图,⊙O是△ABC的外接圆,AB=AC,P是⊙O上一点.(1)请你只用无刻度的直尺,分别画出图①和图②中∠P的平分线;(2)结合图②,说明你这样画的理由.25.(10分)如图,四边形ABCD内接于⊙O,点E在对角线AC上,EC=BC=DC.(1)若∠CBD=39°,求∠BAD的度数;(2)求证:∠1=∠2.26.(10分)如图,四边形ACDE是证明勾股定理时用到的一个图形,a,b,c是Rt△ABC和Rt△BED边长,易知,这时我们把关于x的形如的一元二次方程称为“勾系一元二次方程”.请解决下列问题:(1)写出一个“勾系一元二次方程”;(2)求证:关于x的“勾系一元二次方程”必有实数根;(3)若x=﹣1是“勾系一元二次方程”的一个根,且四边形ACDE的周长是6,求△ABC面积.27.(10分)一家化工厂原来每月利润为120万元,从今年1月起安装使用回收净化设备(安装时间不计),一方面改善了环境,另一方面大大降低原料成本.据测算,使用回收净化设备后的1至x月(1≤x≤12)的利润的月平均值w(万元)满足w=10x+90,第二年的月利润稳定在第1年的第12个月的水平.(1)设使用回收净化设备后的1至x月(1≤x≤12)的利润和为y,写出y关于x的函数关系式,并求前几个月的利润和等于700万元;(2)当x为何值时,使用回收净化设备后的1至x月的利润和与不安装回收净化设备时x 个月的利润和相等;(3)求使用回收净化设备后两年的利润总和.28.(12分)已知到直线l的距离等于a的所有点的集合是与直线l平行且距离为a的两条直线l1、l2(如图①).(1)在图②的平面直角坐标系中,画出到直线y=x+2的距离为1的所有点的集合的图形.并写出该图形与y轴交点的坐标.(2)试探讨在以坐标原点O为圆心,r为半径的圆上,到直线y=x+2的距离为1的点的个数与r的关系.(3)如图③,若以坐标原点O为圆心,2为半径的圆上只有两个点到直线y=x+b的距离为1,则b的取值范围为.2016-2017学年江苏省扬州市梅岭中学九年级(上)第一次月考数学试卷参考答案与试题解析一、精心选一选1.已知关于x的方程,(1)ax2+bx+c=0;(2)x2﹣4x=0;(3)1+(x﹣1)(x+1)=0;(4)3x2=0中,一元二次方程的个数为()个.A.1 B.2 C.3 D.4【考点】一元二次方程的定义.【分析】根据一元二次方程的定义逐项判断即可.【解答】解:(1)ax2+bx+c=0中a可能为0,故不是一元二次方程;(2)x2﹣4x=0符合一元二次方程的定义,故是一元二次方程;(3)1+(x﹣1)(x+1)=0,去括号合并后为x2=0,是一元二次方程;(4)3x2=0,符合一元二次方程的定义,是一元二次方程;所以是一元二次方程的有三个,故选C.【点评】本题主要考查一元二次方程的定义,即只含有一个未知数且未知数的次数为2的整式方程,注意如果是字母系数的方程必须满足二次项的系数不等于0才可以.2.一元二次方程x2﹣8x﹣1=0配方后可变形为()A.(x+4)2=17 B.(x+4)2=15 C.(x﹣4)2=17 D.(x﹣4)2=15【考点】解一元二次方程-配方法.【分析】方程利用配方法求出解即可.【解答】解:方程变形得:x2﹣8x=1,配方得:x2﹣8x+16=17,即(x﹣4)2=17,故选C【点评】此题考查了解一元二次方程﹣配方法,熟练掌握完全平方公式是解本题的关键.3.一元二次方程x2+x﹣1=0的根的情况是()A.有两个不相等的实数根 B.有两个相等的实数根C.没有实数根D.无法判断【考点】根的判别式.【分析】判断上述方程的根的情况,只要看根的判别式△=b2﹣4ac的值的符号就可以了.【解答】解:∵a=1,b=1,c=﹣1,∴△=b2﹣4ac=12﹣4×1×(﹣1)=5>0,∴方程有两个不相等的实数根.故选A【点评】总结:一元二次方程根的情况与判别式△的关系:(1)△>0⇔方程有两个不相等的实数根;(2)△=0⇔方程有两个相等的实数根;(3)△<0⇔方程没有实数根.4.如图,AB是⊙O直径,∠AOC=130°,则∠D=()A.65°B.25°C.15°D.35°【考点】圆周角定理.【分析】先根据邻补角的定义求出∠BOC,再利用圆周角定理求解.【解答】解:∵∠AOC=130°,∴∠BOC=180°﹣∠AOC=180°﹣130°=50°,∴∠D=×50°=25°.故选B.【点评】本题利用了圆周角定理和邻补角的概念求解.5.在数轴上,点A所表示的实数为3,点B所表示的实数为a,⊙A的半径为2.下列说法中不正确的是()A.当a<5时,点B在⊙A内B.当1<a<5时,点B在⊙A内C.当a<1时,点B在⊙A外D.当a>5时,点B在⊙A外【考点】点与圆的位置关系.【分析】先找出与点A的距离为2的点1和5,再根据“点与圆的位置关系的判定方法”即可解.【解答】解:由于圆心A在数轴上的坐标为3,圆的半径为2,∴当d=r时,⊙A与数轴交于两点:1、5,故当a=1、5时点B在⊙A上;当d<r即当1<a<5时,点B在⊙A内;当d>r即当a<1或a>5时,点B在⊙A外.由以上结论可知选项B、C、D正确,选项A错误.故选:A.【点评】本题考查点与圆的位置关系的判定方法.若用d、r分别表示点到圆心的距离和圆的半径,则当d>r时,点在圆外;当d=r时,点在圆上;当d<r时,点在圆内.6.如图,在平面直角坐标系中,点A、B、C的坐标分别为(1,4)、(5,4)、(1,﹣2),则△ABC外接圆的圆心坐标是()A.(2,3) B.(3,2) C.(1,3) D.(3,1)【考点】确定圆的条件;坐标与图形性质.【分析】根据垂径定理的推论“弦的垂直平分线必过圆心”,作两条弦的垂直平分线,交点即为圆心.【解答】解:根据垂径定理的推论,则作弦AB、AC的垂直平分线,交点O1即为圆心,且坐标是(3,1).故选D.【点评】此题考查了垂径定理的推论,能够准确确定一个圆的圆心.7.下列命题正确的个数是()(1)直径是圆中最大的弦.(2)长度相等的两条弧一定是等弧.(3)半径相等的两个圆是等圆.(4)面积相等的两个圆是等圆.(5)同一条弦所对的两条弧一定是等弧.A.2 B.3 C.4 D.5【考点】命题与定理;圆的认识.【分析】利用圆的有关定义分别判断后即可确定正确的选项.【解答】解:(1)直径是圆中最大的弦,正确.(2)长度相等的两条弧一定是等弧,错误.(3)半径相等的两个圆是等圆,正确.(4)面积相等的两个圆是等圆,正确.(5)同一条弦所对的两条弧一定是等弧,错误,故选B.【点评】本题考查了命题与定理的知识,解题的关键是能够了解圆的有关定义,难度不大.8.如图,在平面直角坐标系xOy中,以原点O为圆心的圆过点A(13,0),直线y=kx﹣3k+4与⊙O交于B、C两点,则弦BC的长的最小值为()A.22 B.24 C.10D.12【考点】圆的综合题.【分析】易知直线y=kx﹣3k+4过定点D(3,4),运用勾股定理可求出OD,由条件可求出半径OB,由于过圆内定点D的所有弦中,与OD垂直的弦最短,因此只需运用垂径定理及勾股定理就可解决问题.【解答】解:对于直线y=kx﹣3k+4,当x=3时,y=4,故直线y=kx﹣3k+4恒经过点(3,4),记为点D.过点D作DH⊥x轴于点H,则有OH=3,DH=4,OD==5.∵点A(13,0),∴OA=13,∴OB=OA=13.由于过圆内定点D的所有弦中,与OD垂直的弦最短,如图所示,因此运用垂径定理及勾股定理可得:BC的最小值为2BD=2=2×=2×12=24.故选:B.【点评】本题主要考查了直线上点的坐标特征、垂径定理、勾股定理等知识,发现直线恒经过点(3,4)以及运用“过圆内定点D的所有弦中,与OD垂直的弦最短”这个经验是解决该选择题的关键.二、细心填一填9.一元二次方程x2=x的解为x1=0,x2=1.【考点】解一元二次方程-因式分解法.【分析】首先把x移项,再把方程的左面分解因式,即可得到答案.【解答】解:x2=x,移项得:x2﹣x=0,∴x(x﹣1)=0,x=0或x﹣1=0,∴x1=0,x2=1.故答案为:x1=0,x2=1.【点评】此题主要考查了因式分解法解一元二次方程,关键是把方程的右面变为0.10.若关于x的一元二次方程kx2﹣2x﹣1=0有两个不相等的实数根,则实数k的取值范围是k>﹣1且k≠0.【考点】根的判别式;一元二次方程的定义.【分析】根据一元二次方程的定义和△的意义得到k≠0且△>0,即(﹣2)2﹣4×k×(﹣1)>0,然后解不等式即可得到k的取值范围.【解答】解:∵关于x的一元二次方程kx2﹣2x﹣1=0有两个不相等的实数根,∴k≠0且△>0,即(﹣2)2﹣4×k×(﹣1)>0,解得k>﹣1且k≠0.∴k的取值范围为k>﹣1且k≠0,故答案为:k>﹣1且k≠0.【点评】本题考查了一元二次方程ax2+bx+c=0(a≠0)的根的判别式△=b2﹣4ac:当△>0,方程有两个不相等的实数根;当△=0,方程有两个相等的实数根;当△<0,方程没有实数根.也考查了一元二次方程的定义.11.若矩形的长和宽是方程2x2﹣16x+m=0(0<m≤32)的两根,则矩形的周长为16.【考点】根与系数的关系;矩形的性质.【分析】设矩形的长和宽分别为x、y,由矩形的长和宽是方程2x2﹣16x+m=0(0<m≤32)的两个根,根据一元二次方程ax2+bx+c=0(a≠0)的根与系数的关系得到x+y=8;xy=,然后利用矩形的性质易求得到它的周长.【解答】解:设矩形的长和宽分别为x、y,根据题意得x+y=8;所以矩形的周长=2(x+y)=16.故答案为:16.【点评】本题考查了一元二次方程ax2+bx+c=0(a≠0)的根与系数的关系:若方程的两根分别为x1,x2,则x1+x2=﹣,x1•x2=.也考查了矩形的性质.12.关于x的一元二次方程(m﹣1)x2+x+m2﹣1=0有一根为0,则m=﹣1.【考点】一元二次方程的解.【分析】根据一元二次方程的解的定义,将x=0代入原方程,列出关于m的方程,通过解关于m的方程即可求得m的值.【解答】解:∵关于x的一元二次方程(m﹣1)x2+x+m2﹣1=0有一根为0,∴x=0满足关于x的一元二次方程(m﹣1)x2+x+m2﹣1=0,且m﹣1≠0,∴m2﹣1=0,即(m﹣1)(m+1)=0且m﹣1≠0,∴m+1=0,解得,m=﹣1;故答案是:﹣1.【点评】本题考查了一元二次方程的解.注意一元二次方程的二次项系数不为零.13.在实数范围内定义一种运算“*”,其规则为a*b=a2﹣b,根据这个规则,方程(x﹣1)*9=0的解为1=﹣2,x2=4.【考点】解一元二次方程-直接开平方法.【分析】先根据新定义得出方程,再分解因式,即可得出两个一元一次方程,求出方程的解即可.【解答】解:∵(x﹣1)*9=0,∴(x﹣1)2﹣9=0,∴(x﹣1+3)(x﹣1﹣3)=0,x﹣1+3=0,x﹣1﹣3=0,x1=﹣2,x2=4,故答案为:x1=﹣2,x2=4.【点评】本题考查了解一元二次方程的应用,解此题的关键是能把一元二次方程转化成一元一次方程,难度适中.14.如图,AB是⊙O的直径,弦CD∥AB.若∠ABD=65°,则∠ADC=25度.【考点】圆周角定理;平行线的性质.【分析】根据圆周角定理和直角三角形两锐角互余解答.【解答】解:∵CD∥AB,∴∠ADC=∠BAD,又∵AB是⊙O的直径,∴∠ADB=90°,∴∠ADC=∠BAD=90°﹣∠ABD=25°.故答案为:25【点评】本题主要考查直径所对的圆周角是直角,两直线平行内错角相等等性质.15.学校课外生物小组的试验园地是长35米、宽20米的矩形,为便于管理,现要在中间开辟一横两纵三条等宽的小道(如图),要使种植面积为600平方米,求小道的宽.若设小道的宽为x米,则可列方程为(35﹣2x)(20﹣x)=600(或2x2﹣75x+100=0).【考点】由实际问题抽象出一元二次方程.【分析】把阴影部分分别移到矩形的上边和左边,可得种植面积为一个矩形,根据种植的面积为600列出方程即可.【解答】解:把阴影部分分别移到矩形的上边和左边可得矩形的长为(35﹣2x)米,宽为(20﹣x)米,∴可列方程为(35﹣2x)(20﹣x)=600(或2x2﹣75x+100=0),故答案为(35﹣2x)(20﹣x)=600(或2x2﹣75x+100=0).【点评】考查列代数式;利用平移的知识得到种植面积的形状是解决本题的突破点;得到种植面积的长与宽是解决本题的易错点.16.如图,以AB为直径的半圆O上有两点D、E,ED与BA的延长线交于点C,且有DC=OE,若∠C=20°,则∠EOB的度数是60°.【考点】圆的认识;等腰三角形的性质.【分析】利用等边对等角即可证得∠C=∠DOC=20°,然后根据三角形的外角等于不相邻的两个内角的和即可求解.【解答】解:∵CD=OD=OE,∴∠C=∠DOC=20°,∴∠EDO=∠E=40°,∴∠EOB=∠C+∠E=20°+40°=60°.故答案为:60°.【点评】本题主要考查了三角形的外角的性质和等腰三角形的性质,正确理解圆的半径都相等是解题的关键.17.如图所示,动点C在⊙O的弦AB上运动,AB=,连接OC,CD⊥OC交⊙O于点D.则CD的最大值为.【考点】垂径定理;勾股定理.【分析】作OH⊥AB,延长DC交⊙O于E,如图,根据垂径定理得到AH=BH=AB=,CD=CE,再利用相交弦定理得CD•CE=BC•AC,易得CD=,当CH最小时,CD最大,C点运动到H点时,CH最小,所以CD的最大值为.【解答】解:作OH⊥AB,延长DC交⊙O于E,如图,∴AH=BH=AB=,∵CD⊥OC,∴CD=CE,∵CD•CE=BC•AC,∴CD2=(BH﹣CH)(AH+CH)=(﹣CH)(+CH)=3﹣CH2,∴CD=,∴当CH最小时,CD最大,而C点运动到H点时,CH最小,此时CD=,即CD的最大值为.故答案为.【点评】本题考查了垂径定理:垂直于弦的直径平分弦,且平分弦所对的弧.也考查了勾股定理.18.如果关于x的一元二次方程ax2+bx+c=0有两个实数根,且其中一个根为另一个根的2倍,则称这样的方程为“倍根方程”,以下关于倍根方程的说法,正确的是②③.(写出所有正确说法的序号)①方程x2﹣x﹣2=0是倍根方程;②若(x﹣2)(mx+n)=0是倍根方程,则4m2+5mn+n2=0;③若点(p,q)在反比例函数y=的图象上,则关于x的方程px2+3x+q=0是倍根方程.【考点】一元二次方程的解.【分析】①解得方程后即可利用倍根方程的定义进行判断;②根据(x﹣2)(mx+n)=0是倍根方程,且x1=2,x2=﹣得到=﹣1,或=﹣4,从而得到m+n=0,4m+n=0,进而得到4m2+5mn+n2=(4m+n)(m+n)=0正确;③根据点(p,q)在反比例函数y=的图象上得到pq=2,然后解方程px2+3x+q=0即可得到正确的结论;【解答】解:①解方程x2﹣x﹣2=0得:x1=2,x2=﹣1,∴方程x2﹣x﹣2=0不是倍根方程,故①错误;②∵(x﹣2)(mx+n)=0是倍根方程,且x1=2,x2=﹣,∴=﹣1,或=﹣4,∴m+n=0,4m+n=0,∵4m2+5mn+n2=(4m+n)(m+n)=0,故②正确;③∵点(p,q)在反比例函数y=的图象上,∴pq=2,解方程px2+3x+q=0得:x1=﹣,x2=﹣,∴x2=2x1,故③正确;故答案为:②③.【点评】本题考查了一元二次方程的解,根与系数的关系,根的判别式,反比例函数图形上点的坐标特征,正确的理解“倍根方程”的定义是解题的关键.三、用心做一做(共10题,共96分)19.(10分)解方程:(1)2x 2﹣4x +1=0(2)x (x +4)=﹣5(x +4).【考点】解一元二次方程-因式分解法.【分析】(1)利用配方法解一元二次方程即可;(2)提取公因式(x +4)即可得到(x +4)(x +5)=0,再解两个一元一次方程即可.【解答】解:∵2x 2﹣4x +1=0,∴x 2﹣2x=﹣,∴(x ﹣1)2=,∴x ﹣1=±,∴x 1=1+,x 2=1﹣;(2)∵x (x +4)=﹣5(x +4).∴(x +4)(x +5)=0,∴x +4=0或x +5=0,∴x 1=﹣4,x 2=﹣5.【点评】本题主要考查了因式分解法解一元二次方程的知识,解题的关键是熟练掌握解方程的一般方法步骤.20.已知x 1=﹣1是方程x 2+mx ﹣5=0的一个根,求m 的值及方程的另一根x 2.【考点】解一元二次方程-因式分解法;一元二次方程的解.【分析】将x 1=﹣1代入原方程,可求出m 的值,进而可通过解方程求出另一根.【解答】解:由题意得:(﹣1)2+(﹣1)×m ﹣5=0,解得m=﹣4;当m=﹣4时,方程为x 2﹣4x ﹣5=0解得:x 1=﹣1,x 2=5所以方程的另一根x 2=5.【点评】此题主要考查了一元二次方程解的意义,以及运用解的定义解决相关问题的能力.21.东台市为打造“绿色城市”,积极投入资金进行河道治污与园林绿化两项工程,已知2013年投资1000万元,预计2015年投资1210万元.若这两年内平均每年投资增长的百分率相同.(1)求平均每年投资增长的百分率;(2)按此增长率,计算2016年投资额能否达到1360万?【考点】一元二次方程的应用.【分析】(1)利用2013年投资1000万元,预计2015年投资1210万元,进而得出等式求出即可;(2)利用(1)中所求,得出2016年投资额即可.【解答】解:(1)设平均每年投资增长的百分率是x.由题意得1000(1+x)2=1210,解得x1=0.1,x2=﹣2.1(不合题意舍去).答:平均每年投资增长的百分率为10%;(2)∵1210×(1+10)=1331<1360,∴不能达到.【点评】此题主要考查了一元二次方程的应用,根据增长率问题得出等式是解题关键.22.每位同学都能感受到日出时美丽的景色.右图是一位同学从照片上剪切下来的画面,“图上”太阳与海平线交于A﹑B两点,他测得“图上”圆的半径为5厘米,AB=8厘米,若从目前太阳所处位置到太阳完全跳出海面的时间为16分钟,求“图上”太阳升起的速度.【考点】垂径定理的应用;勾股定理.【分析】连接OA,过点O作OD⊥AB,由垂径定理求出AD的长,再根据勾股定理求出OD的长,进而可计算出太阳在海平线以下部分的高度,根据太阳从所处位置到完全跳出海平面的时间为16分钟即可得出结论.【解答】解:连接OA,过点O作OD⊥AB,∵AB=8厘米,∴AD=AB=4厘米,∵OA=5厘米,∴OD==3厘米,∴海平线以下部分的高度=OA+OD=5+3=8(厘米),∵太阳从所处位置到完全跳出海平面的时间为16分钟,∴“图上”太阳升起的速度==0.5厘米/分钟.【点评】本题考查的是垂径定理在实际生活中的运用,根据题意作出辅助线,构造出直角三角形是解答此题的关键.23.(10分)(2010•江津区)在等腰△ABC中,三边分别为a、b、c,其中a=5,若关于x的方程x2+(b+2)x+6﹣b=0有两个相等的实数根,求△ABC的周长.【考点】根与系数的关系;三角形三边关系;等腰三角形的性质.【分析】若一元二次方程有两个相等的实数根,则根的判别式△=0,据此可求出b的值;进而可由三角形三边关系定理确定等腰三角形的三边长,即可求得其周长.【解答】解:∵关于x的方程x2+(b+2)x+6﹣b=0有两个相等的实数根,∴△=(b+2)2﹣4(6﹣b)=0,即b2+8b﹣20=0;解得b=2,b=﹣10(舍去);①当a为底,b为腰时,则2+2<5,构不成三角形,此种情况不成立;②当b为底,a为腰时,则5﹣2<5<5+2,能够构成三角形;此时△ABC的周长为:5+5+2=12;答:△ABC的周长是12.【点评】此题考查了根与系数的关系、等腰三角形的性质及三角形三边关系定理;在求三角形的周长时,不能盲目的将三边相加,而应在三角形三边关系定理为前提条件下分类讨论,以免造成多解、错解.24.(10分)(2014•东海县二模)如图,⊙O是△ABC的外接圆,AB=AC,P是⊙O上一点.(1)请你只用无刻度的直尺,分别画出图①和图②中∠P的平分线;(2)结合图②,说明你这样画的理由.【考点】作图—复杂作图;等腰三角形的性质;圆心角、弧、弦的关系;圆周角定理.【分析】(1)利用圆心角、弧、弦的关系,得出作法即可;(2)利用圆周角定理得出=,再利用AB=AC,得出,进而得出答案.【解答】解:(1)如图①,连接AP,即为所求角平分线;如图②,连接AO并延长,与⊙O交于点D,连接PD,即为所求角平分线.(2)∵AD是直径,∴=,又∵AB=AC,∴.∴,所以PD平分∠BPC.【点评】此题主要考查了基本作图以及圆心角、弧、弦的关系等知识,熟练利用圆心角、弧、弦的关系得出是解题关键.25.(10分)(2015•台州)如图,四边形ABCD内接于⊙O,点E在对角线AC上,EC=BC=DC.(1)若∠CBD=39°,求∠BAD的度数;(2)求证:∠1=∠2.【考点】圆周角定理;圆心角、弧、弦的关系.【分析】(1)根据等腰三角形的性质由BC=DC得到∠CBD=∠CDB=39°,再根据圆周角定理得∠BAC=∠CDB=39°,∠CAD=∠CBD=39°,所以∠BAD=∠BAC+∠CAD=78°;(2)根据等腰三角形的性质由EC=BC得∠CEB=∠CBE,再利用三角形外角性质得∠CEB=∠2+∠BAE,则∠2+∠BAE=∠1+∠CBD,加上∠BAE=∠CBD,所以∠1=∠2.【解答】(1)解:∵BC=DC,∴∠CBD=∠CDB=39°,∵∠BAC=∠CDB=39°,∠CAD=∠CBD=39°,∴∠BAD=∠BAC+∠CAD=39°+39°=78°;(2)证明:∵EC=BC,∴∠CEB=∠CBE,而∠CEB=∠2+∠BAE,∠CBE=∠1+∠CBD,∴∠2+∠BAE=∠1+∠CBD,∵∠BAE=∠BDC=∠CBD,∴∠1=∠2.【点评】本题考查了圆周角定理:在同圆或等圆中,同弧或等弧所对的圆周角相等,都等于这条弧所对的圆心角的一半.也考查了等腰三角形的性质.26.(10分)(2016•濉溪县三模)如图,四边形ACDE是证明勾股定理时用到的一个图形,a,b,c是Rt△ABC和Rt△BED边长,易知,这时我们把关于x的形如的一元二次方程称为“勾系一元二次方程”.请解决下列问题:(1)写出一个“勾系一元二次方程”;(2)求证:关于x的“勾系一元二次方程”必有实数根;(3)若x=﹣1是“勾系一元二次方程”的一个根,且四边形ACDE的周长是6,求△ABC面积.【考点】一元二次方程的应用;勾股定理的证明.【分析】(1)直接找一组勾股数代入方程即可;(2)通过判断根的判别式△的正负来证明结论;(3)利用根的意义和勾股定理作为相等关系先求得c的值,根据完全平方公式求得ab的值,从而可求得面积.【解答】(1)解:当a=3,b=4,c=5时勾系一元二次方程为3x2+5x+4=0;(2)证明:根据题意,得△=(c)2﹣4ab=2c2﹣4ab∵a2+b2=c2∴2c2﹣4ab=2(a2+b2)﹣4ab=2(a﹣b)2≥0即△≥0∴勾系一元二次方程必有实数根;(3)解:当x=﹣1时,有a﹣c+b=0,即a+b= c∵2a+2b+c=6,即2(a+b)+c=6∴3c=6∴c=2∴a2+b2=c2=4,a+b=2∵(a+b)2=a2+b2+2ab∴ab=2=ab=1.∴S△ABC【点评】此类题目要读懂题意,根据题目中所给的材料结合勾股定理和根的判别式解题.27.(10分)(2008•潍坊)一家化工厂原来每月利润为120万元,从今年1月起安装使用回收净化设备(安装时间不计),一方面改善了环境,另一方面大大降低原料成本.据测算,使用回收净化设备后的1至x月(1≤x≤12)的利润的月平均值w(万元)满足w=10x+90,第二年的月利润稳定在第1年的第12个月的水平.(1)设使用回收净化设备后的1至x月(1≤x≤12)的利润和为y,写出y关于x的函数关系式,并求前几个月的利润和等于700万元;(2)当x为何值时,使用回收净化设备后的1至x月的利润和与不安装回收净化设备时x 个月的利润和相等;(3)求使用回收净化设备后两年的利润总和.【考点】一元二次方程的应用.【分析】(1)因为使用回收净化设备后的1至x月(1≤x≤12)的利润的月平均值w(万元)满足w=10x+90,所以y=xw=x(10x+90);要求前几个月的利润和=700万元,可令y=700,利用方程即可解决问题;(2)因为原来每月利润为120万元,使用回收净化设备后的1至x月的利润和与不安装回收净化设备时x个月的利润和相等,所以有y=120x,解之即可求出答案;(3)因为使用回收净化设备后第一、二年的利润=12×(10×12+90),求出它们的和即可.【解答】解:(1)y=xw=x(10x+90)=10x2+90x,10x2+90x=700,解得:x1=5或x2=﹣14(不合题意,舍去),答:前5个月的利润和等于700万元;(2)10x2+90x=120x,解得:x1=3,x2=0(不合题意,舍去),答:当x为3时,使用回收净化设备后的1至x月的利润和与不安装回收净化设备时x个月的利润和相等;(3)第一年全年的利润是:12(10×12+90)=2520(万元),前11个月的总利润是:11(10×11+90)=2200(万元),∴第12月的利润是2520﹣2200=320(万元),第二年的利润总和是12×320=3840(万元),2520+3840=6360(万元).答:使用回收净化设备后两年的利润总和是6360万元.【点评】本题需正确理解题意,找出数量关系,列出函数关系式进一步求解.28.(12分)(2014秋•南京校级期中)已知到直线l的距离等于a的所有点的集合是与直线l平行且距离为a的两条直线l1、l2(如图①).(1)在图②的平面直角坐标系中,画出到直线y=x+2的距离为1的所有点的集合的图形.并写出该图形与y轴交点的坐标.(2)试探讨在以坐标原点O为圆心,r为半径的圆上,到直线y=x+2的距离为1的点的个数与r的关系.(3)如图③,若以坐标原点O为圆心,2为半径的圆上只有两个点到直线y=x+b的距离为1,则b的取值范围为﹣3<b<﹣或<b<3.【考点】圆的综合题.【分析】(1)易证△AOB是等腰直角三角形,两直线之间的距离是1,则过B作l1的垂线,垂线段长是1,利用勾股定理求得BD的长,即可求得D的坐标,同理求得E的坐标;(2)求出O到直线的距离,据此即可作出判断;(3)首选求得到原点距离是1和3时直线对应的b的值,则b的范围即可求得.。

江苏省扬州梅岭中学九年级语文上学期期中试题 苏教版

江苏省扬州梅岭中学九年级语文上学期期中试题 苏教版

扬州市梅岭中学九年级语文期中试卷(满分:150分;考试时间:150分钟)第Ⅰ卷选择题(共18分)1.下列加点字的注音,全部正确....的一组是(3分)()A.花蕾.(lěi) 惬.意(qiè) 瑰.宝(guì) 万籁.(lài)俱寂B.和煦.(xù) 嶙.峋(lín) 恬.静(tián) 玲珑剔.(tī)透C.山峦.(luán) 阴晦.(huì) 拮据.(jù) 销声匿.迹(nì)D.细腻.(nì) 颤.抖(chàn) 祭祀.(shì) 不屑.一顾(xiè)2.下列句子标点符号使用有误..的一项是(3分) ()A.“慈母手中线,游子身上衣”,至爱亲情,血浓于水。

B.我们必须了解这样做有什么好处,不这样做有什么坏处。

C.这时我的耳边传来一句撕心裂肺地嘶喊:“别走!妈妈。

”D.国家食品药品监督管理总局3月16日公布的《食品召回管理办法》,将于2015年9月1日起施行。

3.下列句子中加点成语使用恰当..的一项是(3分) ()A.他为人和善,与邻里相处和睦,是个八面玲珑....的人。

B.他常常在行家面前卖弄,结果被人贻笑大方....。

C.严冬的夜晚,凛冽的北风从后窗缝隙灌进来,常常把人从睡梦中冻醒,让人不寒而栗....。

D.随着科技的进步和社会的发展,弹棉花、补锅钉碗等许多曾与人们生活息息相关....的老行业正逐渐从我们的视线中消失。

4.下列句子中没有语病....的一项是(3分) ()A.国务院要求加快推进宽带网络基础设施建设,进一步提速降费,加强服务水平。

B.汪国真的诗作曾点燃了一代人的青春梦想,他猝然长逝,怎不让人扼腕叹息?C.实施“校园足球计划”,旨在普及足球运动,进一步提高青少年足球运动。

D.如果将烟草税提高50%,可使烟民减少4900万,避免约1100万人不因吸烟死亡。

2017-2018梅岭初三期中物理解析

2017-2018梅岭初三期中物理解析

扬州市梅岭中学2017-2018学年初三物理第一学期期中考试试卷解析一.选择题。

1.某九年级同学家住5楼。

一天,他提着装有30个鸡蛋的塑料袋从1楼走到家里在此过程中,下列估算不合理的是A.他提鸡蛋的力做的功约为200JB.他提鸡蛋的力做功的功率约为3WC.他爬楼做的功约为6×10³JD.他爬楼做功的功率约为1×10³W【解答】D【解析】【分析】由题意知:他提着装有30个鸡蛋的塑料袋所用的力约为F=16N,从1楼走到家里登楼的高度约为h=12m,速度约为v=0.2m/s,故他提鸡蛋的力做的功约为W=Fh=16N ×12m=192J,功率约为P=Fv=16N×0.2m/s=3.2W,A、B选项是正确的;人的重力约为G=500N,他爬楼做的功约为W=Gh=500N×12m=6000J,功率约为P=Gv=500N×0.2m/s=100W,C选项是正确的,D选项是错误的,故本题应选D。

【考点】功和功率2.踮脚是一项很好的有氧运动(如图),它简单易学,不受场地的限制,深受广大群众的喜爱,踮脚运动的基本模型是杠杆,下列分析正确的是()A.脚后跟是支点,是省力杠杆B.脚后跟是支点,是费力杠杆C.脚掌与地面接触的地方是支点,是省力杠杆D.脚掌与地面接触的地方是支点,是费力杠杆【考点】杠杆的应用,杠杆的分类【分析】结合图片和生活经验,先判断杠杆在使用过程中,动力臂和阻力臂的大小关系,再判断它是属于哪种类型的杠杆.【解答】如图所示,踮脚时,脚掌与地面接触的地方是支点,小腿肌肉对脚的拉力向上,从图中可知动力臂大于阻力臂,是省力杠杆。

故选C.3.一个人先后用同样大小的力F将不同质量的物体分别在光滑水平面、粗糙水平面和粗糙斜面上沿力的方向移动相同的距离s(如图所示),该力在这三个过程中所做的功分别为W1、W2、W3,关于它们之间的大小关系说法正确的是()A.W1<W2<W3B.W1<W2=W3C.W1=W2=W3D.W1=W2<W3【考点】功的大小比较,功的计算【分析】本题主要考查了功的大小比较,解答的关键是知道功的计算公式。

最新扬州市梅岭中学2017-2018初三上英语期中试卷含答案

最新扬州市梅岭中学2017-2018初三上英语期中试卷含答案

扬州市梅岭中学2017--2018学年第一学期期中考试试卷初三英语(时间:100 分钟;)第I 卷(80分)一、听力测试(共20 小题;每小题1分,计20 分)第一部分听对话本部分共有10道小题,每小题你将听到一段对话,每段对话听两遍。

( ) 1. What will the boy take part in today?A. B. C.( ) 2. What is Ann’s animal sign?A. B. C.( ) 3. What is the girl’s dream?A. B. C.( ) 4. How did the man go to the football match?A. B. C.( ) 5 What colour may represent Jenny’s feeling now?A. Blue.B. Red.C. Green.( ) 6. What does the man think of his cousin?A. Energetic.B. Curious.C. Creative.( ) 7. What is Mrs. Black like?A. Tall.B. Smart.C. Serious.( ) 8. Where does this dialogue probably take place?A. In a clothes shop.B. In a library.C. In a hospital.( ) 9. What does the girl mean?A. She doesn’t like swimming.B. She can’t go swimming with Tom.C. She will go swimming with her mother.( ) 10. When did the man become an Art teacher?A. In 2004.B. In 2006.C. In 2008.第二部分听对话和短文答题听一段对话,回答第11至12小题。

扬州市梅岭中学2017--2018学年度第一学期期中测试九年级语文(含答案)

扬州市梅岭中学2017--2018学年度第一学期期中测试九年级语文(含答案)

5. 下列有关文学常识及课文内容的表述,错误的一项是(3 分)( ) A. 《诗经》是我国第一部诗歌总集,分“风””雅“”颂”三部分,普遍采用“赋”“比” “兴”的表现手法,在我国文学史上有重要地位。 B. 我国现代文学家鲁迅在作品中塑造了很多著名人物形象,其中藤野先生、闰土、孔乙己、 都是其散文集《朝花夕拾》中的人物。 C. 《画山绣水》是现代作家杨朔写的一篇散文,本文描写了作者从漓江上观赏到的自然风 光,表现了珍惜现在、创造未来的人生理想。 D. 小说《我的叔叔于勒》是依照盼于勒,赞于勒,见于勒,躲于勒的顺序展开情节的。
阅读文言文,回答 10~13 题。(16 分) 乐工罗程者,善弹琵琶,为第一,能变易新声。得幸于武宗,恃恩自恣。宣宗初亦召供奉。 程既审上晓音律,尤自刻苦。往往令倚嫔御歌,必为奇巧声动上,由是得幸。程一日果以眦 睚杀人,上大怒,立命斥出,付京兆。他工辈以程艺天下无双,欲以动上意。会幸苑中,乐 将作,遂旁设一虚坐,置琵琶于其上。乐工等罗列上前,连拜且泣。上曰:“汝辈何为也?” 进曰:“罗程负陛下,万死不赦。然臣辈惜程艺天下无双,不得永奉陛下,以是为恨。”上曰: “汝辈所惜罗程艺耳,我所重者高祖、太宗法也。”卒不赦程。
8 语文综合实践。(8 分)
从 2016 年的冬末到 2017 年的早春,随着《朗读者》节目的录制,朗读亭先后摆放在了北京、 上海、广州、西安、杭州等十三座城市,共有三万多个朗读者走进了朗读亭。我们生活里遇
到的每一个人,你看到的往往只是他的一面而已,就像我们总是把自己最想说的话放在心里。
献给所有为自己的生活而朗读的人们。
舞台。 D.在第七个世界家庭医生日来临之际,芳草社区卫生服务中心 处. 心. 积. 虑. 让家庭医生走
进百姓家门。。
3. 下列句子中没有语病的一项是( )。 A: 有些家长为自己的孩子购置了多功能电话手表,是一种可以双向通话,能准确定位,并 具有防水功能的电子设备。 B: 随着人们对非物质文化遗产保护意识不断加强,使得杭州特有剧种——杭剧的传承和发 展迎来了难得的历史机遇。 C: 最近,来自“一带一路”沿线国家的 20 个在华留学生,评选出中国“新四大发明”:高 铁、网购、支付宝和共享单车。。 D: 傅雷以深厚的学养,真挚的父爱,倾听者万里之外儿子的每一次心跳和儿子前进路上可 能出现的困难,传送着自己的惦念。。
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扬州市梅岭中学 2017--2018学年第一学期期中考试试卷初三年级英语(时间:100 分钟;命题人:龙英审核人:花永琴)第I 卷(80分)一、听力测试(共20 小题;每小题1分,计20 分)第一部分听对话本部分共有10道小题,每小题你将听到一段对话,每段对话听两遍。

( ) 1. What will the boy take part in today?A. B. C.( ) 2. What is An n’s animal sign?A. B. C.( ) 3. What is the girl’s dream?A. B. C.( ) 4. How did the man go to the football match?A. B. C.( ) 5 What colour may represent Jenny’s feeling now?A. Blue.B. Red.C. Green.( ) 6. What does the man think of his cousin?A. Energetic.B. Curious.C. Creative.( ) 7. What is Mrs. Black like?A. Tall.B. Smart.C. Serious.( ) 8. Where does this dialogue probably take place?A. In a clothes shop.B. In a library.C. In a hospital.( ) 9. What does the girl mean?A. She doesn’t like swimming.B. She can’t go swimming with Tom.C. She will go swimming with her mother.( ) 10. When did the man become an Art teacher?A. In 2004.B. In 2006.C. In 2008.第二部分听对话和短文答题听一段对话,回答第11至12小题。

( ) 11. What’s the woman’s problem?A. she feels nervous about the test.B. She doesn’t work hard.C. She has never taken any test.( ) 12. What is the man’s suggestion for getting good results in exams?A. Talking with others.B. Often taking tests.C. Always working hard.(( ) 14. A. Her teacher B. She herself C. Her parents( ) 15. A. donating money B. performing operations C. doing voluntary work 听第二篇短文,回答第16至20小题。

( ) 16. How long was Mr. Brown going away?A. A week.B. A month.C. Two weeks.( ) 17. Where did the boy put the paper at first?A. Into his pocket.B. Into his schoolbag.C. Into his wallet.( ) 18. What did the boy do when he thought nobody would come to see Mr. Brown?A. Looked for the paper.B. Burnt the paper.C. Visited someone.( ) 19. When did the man come to see Mr. Brown after he left?A. On the fourth day.B. On the last day.C. On the fifth day.( ) 20. Why was the man very surprised after he heard the boy’s words?A. He thought Mr. Brown was out.B. He thought Mr. Brown was ill.C. He thought Mr. Brown was dead.二、单项选择(共15 小题;每小题1 分,计15 分)21. The 19th CPC National Congress (十九大) is ______big success and we should try our best to build______better world.A. /, aB. /, theC. a, aD. a, the22. ---Although my grandma is seventy years old, she is always in the pink.---Yes. Because she exercises every day and ha s a balanced diet .Here “in the pink” means ______.A. healthyB. luckyC. beautifulD. creative23. ---Have you heard that Song Zhongji married Song Hye Kyo ?---Yes, The film “Descendants of the Sun”(太阳的后裔) brought them to the ______of us.A. attentionB. celebrationC. introductionD. organization24. --- Boys and girls, no hand ______any other tool can be used in the game, ______ you still need tomake it work. Are you clear about the rules?---Yes, sir.A. and; soB. or; butC. and; butD. or; so25. ---That old man looks weak these days.---Yes .we're sure ____ something is wrong with him and we doubt ______ the disease can be cured.A. if; whetherB. that; thatC. whether; ifD. that; whether26. Parents will ______their children ______making friends when they attend junior high .A. strict with; withB. be strict with; inC. be strict in; withD. strict in; with27. Jim works _____ the chief engineer _____ a big company. He always works ______ high standards.A. for; as; forB. as; in; asC. as; for; toD. for; in; to28. Tan Dun has an amazing gift for art and his music is well worth ______.A. being listened toB. listen toC. listening toD. to listen to29. ______ the students ______their teacher know about the Spud Webb.A. Both…and…B. Not only…but also…C. Neither-…nor…D. Either…or…30. She is a new student in Meiling Middle School and has few close friends. So she doesn’t know______about the trouble.A. who to talkB. who to talk toC. who to sayD. what to talk31. ---What do you think of the white dress?--- I ______its style, but I ______ not choose it because of its price.A. would rather; preferB. prefer; preferC. would rather; would ratherD. prefer; would rather32. Could you tell me _______?A. what she had done with the newspapersB. how we can call this ladyC. what is wrong with the little boyD. which gate I should go33. ---How do you like your new school?--- Wonderful. When I ______ trouble, many teachers and students will help me.A. look intoB. get intoC. cut intoD. break into34. When you visit a museum, some instructions should ______and we’d better not ______ them.A. pay attention to ; be against B .be paid attention ; againstC. be paid attention to ; againstD. be paid attention to ; be against35. ---Many people think women are better at cooking than men .--- ______.Most top cooks in the world are men .A I agreeB ExactlyC Not at allD That ’s not the case三、完形填空(共15小题;每小题1分,满分15分)After their business trip, John and Mary returned happily, hoping to see their lovely 36 . As they drove into their home town, they noticed a lot of 37 , and they went off their usual way to see what it was. They found a house 38 fire. Mary said, “Oh, well, it isn’t our fire, let’s go home.”But John 39 closer and screamed, “That was Fred Jones’ home. He wouldn’t come home from work yet, maybe there is something we could do.” “It has 40 to do with us,” Mary disagreed.But John drove up and stopped. A woman on the lawn was 41 , “The children! Get the children!” John shouted at her, “Tell us where the children are!” “In the 42 ,” answered the woman loudly, “down the hall and to the left.”Though Mary disagreed, John 43 into the bathroom that was full of smoke and terribly hot. He found the door and two children. As he left, he could hear some more crying. He passed the two badly scared children onto waiting arms and 44 how many more children were down there. They told him 45 more and Mary caught his arm and cried, “John! Don’t go back! It’s dangerous! That house will fall down any second.”But he ran into the smoke-filled hallway and at last he found both children. As he climbed up thestairs, the thought went 46 his mind that there was something strange about the little bodies next to 47 , and at last when they came out into the 48 and fresh air, he found that he had just 49 his own children.The baby-sitter (保姆) working for John and Mary had left their children at Fred Jones’ home50 she was doing some shopping.36.A. dog B. father C. friend D. children.37.A. light B. smoke C. water D. rubbish38. A. in B. at C. on D. of39. A. ran B. walked C. drove D. rode40. A. everything B. anything C. nothing D. something41. A screaming B. saying C. talking D. speaking42. A. bathroom B. kitchen C. bedroom D. hall43. A. turned B. searched C. fell D. rushed44. A. thought B. said C. asked D. found45. A. five B. four C. three D. two46. A. across B. through C. up D. onto47. A. it B. him C. them D. her48. A. sunlight B. ground C. lawn D. field49. A. saved B. found C. lost D. missed50. A. while B. after C. so D. until四、阅读理解(共15小题;每小题2分,计30分)A. Breakfast.B. Lunch.C. Dinner.D. Three meals.52. What can you visit on the second day?A. The Great Wall and the Forbidden City.B. The Temple of Heaven and the Great Wall.C. Tian’anmen Square and the Summer Palace.D. The Forbidden City and the Temple of Heaven.53.According to the form, where is a good place to shop for Chinese goods and souvenirs ?A. Tian’anmen SquareB. The Forbid den CityC. Xiushui StreetD. the Summer Palace54. The passage is most likely to be taken from .A. a travel guideB. an instructionC. a newspaperD. an advertisementBThese days shared bikes are becoming the center of attention in my WeChat friend circle. Many of my friends are sharing photos of themselves riding bikes, especially during the weekend in natural parks, and I can see people logging in (登录) and out of shared bike apps.I’m very happy that there are shared bikes on the road. They have saved us a lot of time during special situations, and on beautiful, clear days, people enjoy riding them outside the city.I tried shared bikes last week, and I didn’t like them very much. I think the first shared bikes without baskets are designed for athletes. They are very hard to ride, and the seats are not comfortable. It makes me wonder whether people really like riding shared bikes or are just saying this to agree with others.A friend secretly told me she tried the bikes to fit in. She doesn’t like bikes and finds Beijing’s roads too hard for bike riding. But recently, the only way to hang out with her friends is riding out of town together. To join in social activities, she had to pick up bike riding again.Another friend admitted that he started talking about and sharing photos on shared bikes in order just to appear modern and fashionable to friends. He started paying attention when shared bikes first came into use.These views will give me something new to think about when I ride these bikes again.55. What does the writer himself think of shared bikes?A. They are very difficult to ride.B. Their seats are comfortable.C. Athletes like shared bikes.D. They can save us a lot of money.56. The underlined word “admitted” may mean _______________ in the passage.A. told a lieB. told the truthC. kept a promiseD. kept a secret57 Which of the following is NOT true according to the passage?A. It’s quite simple to use shared bikes at special time.B. Some people only appear to be interested in shared bikes.C. The writer likes the bikes without baskets because they are for athletes.D. Some people like to share photos riding bikes because they want to agree with others.CWhen you cough or sneeze, yo u’d better turn your head away from others and cover your mouth with the full part of your hand. And then, you should say,“Excuse me.”This seems so simple, but it is surprising how many kids have never been told to do this. Actually, I notice adults all the time who cough and sneeze in publicwithout placing a hand over the mouth. One important thing I point out to the kids is that after they sneeze or cough on their hands, they should wash their hands as soon as possible. If not, they will be passing those germs (细菌) along to everything and everyone they touch.If you come to a door and someone is following you, hold the door. Ifthe door opens by pulling, pull it open, stand to the side, and allow theother person to pass through first, then you can walk through. If the dooropens by pushing, hold the door after you pass through.After a few weeks of seeing kids try to get through doors in the schooland watching them enter restaurants as the door hit other people, I knew I hadto discuss the problem with my students. Teaching them small acts of kindness, such as letting someoneelse go through a door first as they hold it open, may seem unimportant, but it can go along way toward helping students realize how to be polite and thank others. Once they’ve been told, they’re halfway there.When we have to go up moving stairs, we will stand to the right. That will give others who are in a hurry a choice of walking up the left-hand side of themoving stairs. When we are going to enter a lift, the underground, or a doorway,we will wait for others to exit before we enter.After college when I moved to London, I was surprised at how polite everyone was in the subways. I was even more touched when I traveled to Japan. In both places, people made efforts to make way for others. On moving stairs, everyone stood to the right and walked to the left. On lifts, everyone would stand over to the side and allow others to exit before they would begin to enter.58. When you cough or sneeze, you should ________.A. touch everythingB. cover your mouthC. point out to the kidsD. pass the germs to others59. If you come to a door and someone is following you, you’d better _______.A. hold the doorB. pass throughC. close the doorD. stand to the side60. Why should we stand to the right of moving stairs?A. Because it’s dangerous to stand to the left.B. Because it’s a traffic rule which we must follow.C. Because we must wait for others to move first.D. Because we should make way for people in a hurry.61. From the passage we can know the writer is a ________.A. doctorB. travelerC. parentD. teacher62. A. The passage is mainly about ______.A. the rules of acts in publicB. the ways of communicationC. the problems of meeting peopleD. the knowledge of social lifeDMany people think that keeping a diary is something that teenage girls do. It’s seen as a place to write down secrets, things you don’t want anyone else to know. The stereotype (模式化观念) is that only women keep diaries. In fact, keeping a diary is a very old tradition. It can be useful for many different types of people. Many famous people have kept diaries. Many powerful people have kept diaries. Some of these people include famous writers and presidents.Keeping a diary is said to have health advantages. Studies show that keeping a diary, that is, writing out thoughts daily, can reduce asthma symptoms (哮喘症状).Writing uses your left brain, which is thoughtful and organized. While your left brain is busy, your right brain is free to create and feel. This allows you to use all of your brain power to better understand yourself, others, and the world around you.The key to successful diary keeping is not stopping any thoughts from coming through. This even means allowing thoughts that influence you to come out in your writing. It helps make your feelings clearer, and is especially useful if a person is faced with a hard decision. Sometimes just writing down the ideas you agree and disagree helps you better understand a problem. You begin to see a problem from different ways. This is helpful if you don’t agree with others.63. What does the word “it” in Paragraph 4 mean?A. Keeping away from illness.B. Using your right brain to create.C. Stopping some thoughts coming through.D. Allowing thoughts to come out in your diary.64. According to the passage, keeping diaries can help ______.A. get along with othersB. understand things betterC. know more about the old traditionD. become famous in the future65. What is the main idea of the passage?A. The advantages of keeping diaries.B. Keeping a diary with your left brain.C. The ways of keeping a diary successfully.D. The reasons girls like keeping diaries.第II卷(60分)五. 词汇运用(共10小题;每小题1分,计10分)根据句子意思,用括号中所给汉语提示或英文单词的适当形式填空(每空一词)66. The project he devoted much time to ________ (success) at last.67. His grandfather passed away in________ (peaceful) in his sleep.68. The man wants to live a more comfortable and________ (simply) life .69. We must first learn about the correct________ (pronounce) of all the words.70. I can clearly see the________ (sad) in her eyes. What has happened to her?71. Do you know how the matter was________ (处理)with yesterday?72. Both of his parents are busy because they work in different ________ (大学).73. The old________挂历) bought from the old things market years ago look beautiful.74. Paper cut is a ________ (传统) Chinese skill with a history of thousands of years.75. She told me her happy childhood without________ (提及)that sad story.六、任务型阅读(计10分)阅读下列短文,根据短文中的信息完成文后表格。

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