浦东新区2013学年度第二学期期末质量抽测
2013学年上海市浦东新区七年级(下)期末数学试卷
2013学年上海市浦东新区七年级(下)期末数学试卷一、选择题:(本大题共4题,每题2分,满分8分)1.(2分)下列各组长度的线段中,不能够组成三角形的是()A.1cm,2cm,3cm B.3cm,4cm,5cmC.5cm,6cm,7cmD.7cm,8cm,9cm2.(2分)在直角坐标平面中,如果点A在第四象限内,且到x轴的距离为3,到y轴的距离为4,那么点A的坐标是()A.(3,﹣4)B.(﹣3,4)C.(4,﹣3)D.(﹣4,3)3.(2分)下列语句错误的是()A.实数可分为有理数和无理数B.无理数可分为正无理数和负无理数C.无理数都是无限小数D.无限小数都是无理数4.(2分)已知a、b、c是同一平面内不重合的三条直线,那么下列语句中正确的个数有()①如果a∥b,b∥c,那么a∥c;②如果a⊥b,b⊥c,那么a⊥c;③如果a∥b,b⊥c,那么a⊥c;④如果a∥b,b⊥c,那么a∥c.A.1个B.2个C.3个D.4个二、填空题:(本大题共16题,每题2分,满分32分)5.(2分)计算:25的平方根是.6.(2分)计算:=.7.(2分)在数轴上表示﹣的点到原点的距离为.8.(2分)地球与太阳的最近距离约为147100000千米,如果这个数要求保留三个有效数字,那么应该是千米.9.(2分)过线段AB上一点P作射线PC,如果∠APC比∠BPC大50°,那么∠APC 的度数是度.10.(2分)如图,已知AB∥CD,点P在直线CD上,∠APB=100°,∠A=(2x+12)°,∠BPD=(4x+8)°,那么x=.11.(2分)已知在△ABC中,∠A=∠B=30°,D是边AB的中点,那么∠ACD=度.12.(2分)已知:如图,∠ACB=∠DBC,如果要说明△AOB≌△DOC,那么还需要添加一个条件,这个条件可以是.13.(2分)如图,已知船C在观测站A的北偏东35°方向上,且在观测站B的北偏西20°方向上,那么∠ACB=度.14.(2分)点M(5,﹣7)关于原点的对称点坐标为.15.(2分)如果点P(x﹣3,y)在第一象限,那么点Q(2﹣x,y+2)在第象限.16.(2分)已知△ABC的三个顶点坐标分别为A(5,0)、B(0,4)、C(3,4),那么这个三角形的面积等于.17.(2分)已知在平面直角坐标系xOy中,点A的坐标为(1,3),那么将点A 绕原点O逆时针旋转90°后的坐标是.18.(2分)如图,已知∠A=30°,∠B=40°,∠C=50°,那么∠AOB=度.19.(2分)如图,在△ABC中,AB=BC,BO、CO分别平分∠ABC和∠ACB,过点O作DE∥BC,分别交边AB、AC于点D和点E,如果△ABC的周长等于14,△ADE的周长等于9,那么AC=.20.(2分)如图,在△ABC中,D、E分别是边AB和AC上的点,将这个△ABC 纸片沿DE折叠,点A落到点F的位置.如果DF∥BC,∠B=60°,∠CEF=20°,那么∠A=度.三、简答题:(本大题满分34分21.(12分)计算:(1);(2)(7×49).22.(6分)已知:如图,直线AB与直线DE相交于点C,CF⊥DE,∠ACD=25°,求∠BCE和∠BCF的度数.23.(8分)已知在等腰△ABC中,AB=AC,对称轴为x轴,点A的坐标为(﹣3,0),点B的坐标为(1,3).(1)请画出△ABC;(2)如果△ABC关于y轴对称的三角形为△A1B1C1,请写出△A1B1C1三个顶点的坐标:点A的对称点A1的坐标是,点B的对称点B1的坐标是,点C的对称点C1的坐标是;(3)如果点D的坐标为(5,﹣3),将△ABC左右平移,使点C与点D重合,那么点A平移的方向是,距离是个单位.24.(8分)已知:如图,AD=BD,CD=ED,∠1=∠2,试说明∠3=∠1的理由.解:因为∠1=∠2(已知),所以∠1+∠BDE=∠2+∠BDE(等式性质),即∠=∠.在△ADE和△BDC中,所以△ADE≌△BDC().所以∠=∠().又因为∠BED=∠2+∠C(),即∠3+∠AED=∠2+∠C,所以∠3=∠2().因为∠1=∠2(已知),所以∠3=∠1().四、解答题(本大题满分26分)25.(8分)如图,已知在等边三角形ABC中,AD⊥BC,AD=AC,联结CD并延长,交AB的延长线于点E,求∠E的度数.26.(8分)如图,已知在△ABC中,AB=AC,∠MAC和∠ABC的平分线AD、BD 相交于点D,试说明△ABD是等腰三角形的理由.27.(10分)已知,AB是圆O的直径,取一把直角三角尺,按如图位置摆放,其中直角顶点放在圆心O上,两条直角边与圆O相交于点M和点N,作ME⊥AB,垂足为点E,NF⊥AB,垂足为点F.(1)试说明EF=ME+NF的理由.(2)如果将这把直角三角尺绕圆心O旋转(点M,N与点A,B都不重合),那么EF与ME,NF之间的数量关系是否会发生变化?如果发生变化,请写出它们的数量关系;如果不发生变化,请说明理由.2013学年上海市浦东新区七年级(下)期末数学试卷参考答案与试题解析一、选择题:(本大题共4题,每题2分,满分8分)1.(2分)下列各组长度的线段中,不能够组成三角形的是()A.1cm,2cm,3cm B.3cm,4cm,5cmC.5cm,6cm,7cmD.7cm,8cm,9cm【分析】根据三角形三边关系定理:三角形两边之和大于第三边,进行判定即可.【解答】解:A、∵1+2=3,∴不能构成三角形;B、∵4+3>5,∴能构成三角形;C、∵6+5>7,∴能构成三角形;D、∵7+8>9,∴能构成三角形.故选:A.【点评】此题主要考查学生对运用三角形三边关系判定三条线段能否构成三角形的掌握情况,注意只要两条较短的线段长度之和大于第三条线段的长度即可判定这三条线段能构成一个三角形.2.(2分)在直角坐标平面中,如果点A在第四象限内,且到x轴的距离为3,到y轴的距离为4,那么点A的坐标是()A.(3,﹣4)B.(﹣3,4)C.(4,﹣3)D.(﹣4,3)【分析】根据点到x轴的距离是点的纵坐标的绝对值,点到y轴的距离是点的横坐标的绝对值,再根据第四象限内点的横坐标大于零,点的纵坐标小于零,可得答案.【解答】解:点A在第四象限内,且到x轴的距离为3,到y轴的距离为4,点A的坐标是(4,﹣3),故选:C.【点评】本题考查了点的坐标,点到x轴的距离是点的纵坐标的绝对值,点到y 轴的距离是点的横坐标的绝对值,注意第四象限内点的横坐标大于零,点的纵坐标小于零.3.(2分)下列语句错误的是()A.实数可分为有理数和无理数B.无理数可分为正无理数和负无理数C.无理数都是无限小数D.无限小数都是无理数【分析】根据实数的分类,即可解答.【解答】解:A、实数可分为有理数无理数,正确;B、无理数可分为正无理数和负无理数,正确;C、无理数都是无限小数,正确;D、无限不循环小数都是无理数,故错误;故选:D.【点评】本题考查了实数,解决本题的关键是掌握实数的分类.4.(2分)已知a、b、c是同一平面内不重合的三条直线,那么下列语句中正确的个数有()①如果a∥b,b∥c,那么a∥c;②如果a⊥b,b⊥c,那么a⊥c;③如果a∥b,b⊥c,那么a⊥c;④如果a∥b,b⊥c,那么a∥c.A.1个B.2个C.3个D.4个【分析】根据如果两条直线都与第三条直线平行,那么这两条直线也互相平行,同一平面内,垂直于同一条直线的两直线平行进行分析即可.【解答】解:①如果a∥b,b∥c,那么a∥c,说法正确;②如果a⊥b,b⊥c,那么a⊥c,说法错误;③如果a∥b,b⊥c,那么a⊥c,说法正确;④如果a∥b,b⊥c,那么a∥c,说法错误.正确的共2个,故选:B.【点评】此题主要考查了平行公理推论,关键是掌握如果两条直线都与第三条直线平行,那么这两条直线也互相平行.二、填空题:(本大题共16题,每题2分,满分32分)5.(2分)计算:25的平方根是±5.【分析】根据平方根的定义,结合(±5)2=25即可得出答案.【解答】解:∵(±5)2=25∴25的平方根±5.故答案为:±5.【点评】本题考查了平方根的知识,属于基础题,解答本题的关键是掌握平方根的定义,注意一个正数的平方根有两个且互为相反数.6.(2分)计算:=.【分析】根据有理数的负整数指数次幂等于正整数指数次幂的倒数计算即可得解.【解答】解:===.故答案为:.【点评】本题考查了负整数指数次幂等于正整数指数次幂的倒数的性质.7.(2分)在数轴上表示﹣的点到原点的距离为.【分析】由于数轴上的点到原点的单位长度即为它到原点的距离,由此即可解决问题.【解答】解:∵表示﹣的点距离原点有个单位长度,∴它到原点的距离为.【点评】此题主要考查了实数和数轴是一一对应的关系以及点在数轴上的几何意义.8.(2分)地球与太阳的最近距离约为147100000千米,如果这个数要求保留三个有效数字,那么应该是 1.47×108千米.【分析】在实际生活中,许多比较大的数,我们习惯上都用科学记数法表示,使书写、计算简便.将一个绝对值较大的数写成科学记数法a×10n的形式时,其中1≤|a|<10,n为比整数位数少1的数.【解答】解:147100000=1.47×108,故答案为:1.47×108.【点评】本题考查了科学记数法与有效字,把一个数M记成a×10n(1≤|a|<10,n为整数)的形式,这种记数的方法叫做科学记数法.规律:(1)当|a|≥1时,n的值为a的整数位数减1;(2)当|a|<1时,n的值是第一个不是0的数字前0的个数,包括整数位上的0.9.(2分)过线段AB上一点P作射线PC,如果∠APC比∠BPC大50°,那么∠APC 的度数是115度.【分析】根据题意,可得∠APC+∠BPC=180°,再根据∠APC比∠BPC大50°,列出二元一次方程组,解方程组,求出∠APC的度数是多少即可.【解答】解:根据题意,可得解得∴∠APC的度数是115度.故答案为:115.【点评】(1)此题主要考查了角的计算,要熟练掌握,解答此题的关键是判断出:∠APC+∠BPC=180°.(2)此题还考查了二元一次方程组的求解方法,要熟练掌握.10.(2分)如图,已知AB∥CD,点P在直线CD上,∠APB=100°,∠A=(2x+12)°,∠BPD=(4x+8)°,那么x=10.【分析】根据平行线的性质可得∠A+∠APD=180°,进而可得100+2x+12+4x+8=180,再解即可.【解答】解:∵AB∥CD,∴∠A+∠APD=180°,∵∠APB=100°,∠A=(2x+12)°,∠BPD=(4x+8)°,∴100+2x+12+4x+8=180,解得:x=10,故答案为:10.【点评】此题主要考查了平行线的性质,关键是掌握两直线平行,同旁内角互补.11.(2分)已知在△ABC中,∠A=∠B=30°,D是边AB的中点,那么∠ACD=60度.【分析】根据等腰三角形三线合一的性质可得AD⊥BC,然后利用直角三角形两锐角互余的性质解答.【解答】解:∵∠A=∠B=30°,∴CA=CB,∵D是边AB的中点,∴∠ACD=∠ACB,∵∠ACB=180°﹣∠A﹣∠B=120°,∴∠ACD=60°.故答案为:60.【点评】本题主要考查了等腰三角形三线合一的性质,直角三角形两锐角互余的性质,是基础题,熟记性质是解题的关键.12.(2分)已知:如图,∠ACB=∠DBC,如果要说明△AOB≌△DOC,那么还需要添加一个条件,这个条件可以是∠A=∠D.【分析】添加∠A=∠D,根据∠ACB=∠DBC,可得BO=CO,再利用AAS定理证明△AOB≌△DOC.【解答】解:添加∠A=∠D;∵∠ACB=∠DBC,∴BO=CO,在△AOB和△DOC中,,∴△AOB≌△DOC(AAS),故答案为:∠A=∠D.【点评】此题主要考查了全等三角形的判定,关键是掌握判定两个三角形全等的一般方法有:SSS、SAS、ASA、AAS、HL.注意:AAA、SSA不能判定两个三角形全等,判定两个三角形全等时,必须有边的参与,若有两边一角对应相等时,角必须是两边的夹角.13.(2分)如图,已知船C在观测站A的北偏东35°方向上,且在观测站B的北偏西20°方向上,那么∠ACB=55度.【分析】根据方向角的定义,利用三角形的内角和求解,即可求解.【解答】解:∠ACB=180°﹣(90°﹣35°)﹣(90°﹣20°)=55°.故答案为:55.【点评】本题主要考查了方向角,解题的关键是熟记三角形内角和定理.14.(2分)点M(5,﹣7)关于原点的对称点坐标为(﹣5,7).【分析】利用两个点关于原点对称时,它们的坐标符号相反,即点P(x,y)关于原点O的对称点是P′(﹣x,﹣y),进而得出答案.【解答】解:点M(5,﹣7)关于原点的对称点坐标为:(﹣5,7).故答案为:(﹣5,7).【点评】此题主要考查了关于原点对称点的性质,正确把握横纵坐标的性质是解题关键.15.(2分)如果点P(x﹣3,y)在第一象限,那么点Q(2﹣x,y+2)在第二象限.【分析】根据第一象限内的点横坐标大于零、纵坐标大于零,可得x、y的取值范围,根据不等式的性质,可得(2﹣x),(y+2)的范围,再根据点的横坐标的取值范围、纵坐标的取值范围,可得答案.【解答】解:由点P(x﹣3,y)在第一象限,得,解得.2﹣x<0,y+2>0,点Q(2﹣x,y+2)在第二象限,故答案为:二.【点评】本题考查了点的坐标,利用第一象限内的点横坐标大于零、纵坐标大于零,得出x、y的取值范围,再利用不等式的性质得出Q点的横坐标的取值范围,纵坐标的取值范围.16.(2分)已知△ABC的三个顶点坐标分别为A(5,0)、B(0,4)、C(3,4),那么这个三角形的面积等于6.【分析】先在坐标系中描出点A、B、C,然后根据三角形面积公式求解.【解答】解:如图,S△ABC=×3×4=6.故答案为6.【点评】本题考查了坐标与图形性质:利用点的坐标计算相应线段的长和判断线段与坐标轴的位置关系.也考查了三角形面积公式.17.(2分)已知在平面直角坐标系xOy中,点A的坐标为(1,3),那么将点A 绕原点O逆时针旋转90°后的坐标是(﹣3,1).【分析】先构建Rt△OAB,再把△OAB绕坐标原点O逆时针旋转90°得到△OA′B′,根据旋转的性质得到A′B′=AB=1,OB′=OB=3,∠OB′A′=∠OBA=90°,然后写出A′点的坐标.【解答】解:如图,把△OAB绕坐标原点O逆时针旋转90°得到△OA′B′,则A′B′=AB=1,OB′=OB=3,∠OB′A′=∠OBA=90°,所以点A′的坐标为(﹣3,1).故答案为(﹣3,1).【点评】本题考查了坐标与图形变化﹣旋转:图形或点旋转之后要结合旋转的角度和图形的特殊性质来求出旋转后的点的坐标.常见的是旋转特殊角度如:30°,45°,60°,90°,180°.通过把线段旋转的问题转化为直角三角形的性质解决问题.18.(2分)如图,已知∠A=30°,∠B=40°,∠C=50°,那么∠AOB=120度.【分析】延长BO交AC于D,根据三角形的一个外角等于和它不相邻的两个内角的和可得∠ADO=40°+50°=90°,再根据三角形外角的性质可得∠AOB的度数.【解答】解:延长BO交AC于D,∵∠B=40°,∠C=50°,∴∠ADO=40°+50°=90°,∵∠A=30°,∴∠AOB=30°+90°=120°,故答案为:120.【点评】此题主要考查了三角形外角的性质,关键是掌握三角形的一个外角等于和它不相邻的两个内角的和.19.(2分)如图,在△ABC中,AB=BC,BO、CO分别平分∠ABC和∠ACB,过点O作DE∥BC,分别交边AB、AC于点D和点E,如果△ABC的周长等于14,△ADE的周长等于9,那么AC=4.【分析】由BO平分∠ABC,CO平分∠ACB,过点O作DE∥BC,易得△BOD与△COE是等腰三角形,又由△ADE的周长为9,可得AB+AC=9,又由△ABC的周长是14,即可求得答案.【解答】解:∵BO平分∠ABC,CO平分∠ACB,∴∠ABO=∠OBC,∠ACO=∠OCB,∵DE∥BC,∴∠BOD=∠OBC,∠COE=∠OCB,∴∠ABO=∠BOD,∠ACO=∠COE,∴BD=OD,CE=OE,∵△ADE的周长为9,∴AD+DE+AE=AD+OD+OE+AE=AD+BD+CE+AE=AB+AC=9,∵△ABC的周长是14,∴AB+AC+BC=14,∵AB=BC,∴2AB+AC=14,∴AC=4.故答案为:4.【点评】此题考查了等腰三角形的性质与判定,角平分线的性质,平行线的性质,三角形的周长,弄清△ADE的周长和△ABC的周长之间的关系是解题的关键.20.(2分)如图,在△ABC中,D、E分别是边AB和AC上的点,将这个△ABC 纸片沿DE折叠,点A落到点F的位置.如果DF∥BC,∠B=60°,∠CEF=20°,那么∠A=50度.【分析】先根据平行线的性质求出∠ADF的度数,再由∠CEF=20°求出∠DEC的度数,根据翻折变换的性质求出∠EDF的度数,根据三角形内角和定理即可得出∠F的度数,进而可得出结论.【解答】解:∵DF∥BC,∠B=60°,∴∠ADF=60°.∵△DEF由△DEA翻折而成,∴∠EDF=∠ADF=×60°=30°,∠A=∠F.∵∠CEF=20°,∴∠DEC==80°,∴∠DEF=80°+20°=100°,∴∠F=180°﹣∠EDF﹣∠DEF=180°﹣30°﹣100°=50°.故答案为:50.【点评】本题考查的是三角形内角和定理,熟知三角形内角和是180°是解答此题的关键.三、简答题:(本大题满分34分21.(12分)计算:(1);(2)(7×49).【分析】(1)原式被开方数利用完全平方公式化简,去括号整理后利用算术平方根定义计算即可得到结果;(2)原式括号中两项变形后,利用同底数幂的乘法法则计算,即可得到结果.【解答】解:(1)原式===4;(2)原式=(70)=1.【点评】此题考查了实数的运算,熟练掌握运算法则是解本题的关键.22.(6分)已知:如图,直线AB与直线DE相交于点C,CF⊥DE,∠ACD=25°,求∠BCE和∠BCF的度数.【分析】根据对顶角相等可直接得到∠BCE=25°,然后再根据CF⊥DE,即可求出∠BCF的度数.【解答】解:∵∠BCE=∠ACD(对顶角相等),∠ACD=25°(已知),∴∠BCE=25°(等量代换).∵CF⊥DE(已知),∴∠ECF=90°(垂直的意义),即∠BCF+∠BCE=90°.∴∠BCF=65°.【点评】本题考查了垂线,解决本题的关键是垂线的性质.23.(8分)已知在等腰△ABC中,AB=AC,对称轴为x轴,点A的坐标为(﹣3,0),点B的坐标为(1,3).(1)请画出△ABC;(2)如果△ABC关于y轴对称的三角形为△A1B1C1,请写出△A1B1C1三个顶点的坐标:点A的对称点A1的坐标是(3,0),点B的对称点B1的坐标是(﹣1,3),点C的对称点C1的坐标是(﹣1,﹣3);(3)如果点D的坐标为(5,﹣3),将△ABC左右平移,使点C与点D重合,那么点A平移的方向是向右,距离是4个单位.【分析】(1)利用等腰三角形的性质结合A,B点坐标进而得出C点坐标;(2)利用轴对称图形的性质得出△A1B1C1三个顶点的坐标进而得出答案;(3)利用点C与点D重合,得出平移规律,进而求出点A平移的方向与距离.【解答】解:(1)△ABC即为所求;(2)如图所示:△A1B1C1,即为所求,A1(3,0),B1(﹣1,3),C1(﹣1,﹣3).故答案为:(3,0),(﹣1,3),(﹣1,﹣3);(3)如图,∵点D的坐标为(5,﹣3),将△ABC左右平移,使点C与点D重合,则点C平移的方向是向右,距离是4个单位∴点A平移的方向是向右,距离是4个单位.故答案为:向右,4.【点评】此题主要考查了轴对称变换以及平移变换,根据题意得出平移规律是解题关键.24.(8分)已知:如图,AD=BD,CD=ED,∠1=∠2,试说明∠3=∠1的理由.解:因为∠1=∠2(已知),所以∠1+∠BDE=∠2+∠BDE(等式性质),即∠ADE=∠BDC.在△ADE和△BDC中,所以△ADE≌△BDC(SAS).所以∠AED=∠C(全等三角形对应角相等).又因为∠BED=∠2+∠C(三角形的一个外角等于与它不相邻的两个内角的和),即∠3+∠AED=∠2+∠C,所以∠3=∠2(等式的性质).因为∠1=∠2(已知),所以∠3=∠1(等量代换).【分析】如图,首先运用等式的基本性质证明∠ADE=∠BDC;运用SAS公理证明△ADE≌△BDC,借助全等三角形的性质证明∠AED=∠C;借助三角形外角的性质及等式的基本性质,即可证明∠3=∠1.【解答】解:因为∠1=∠2(已知),所以∠1+∠BDE=∠2+∠BDE(等式性质),即∠ADE=∠BDC.在△ADE和△BDC中,,所以△ADE≌△BDC(SAS).所以∠AED=∠C(全等三角形对应角相等).又因为∠BED=∠2+∠C(三角形的一个外角等于与它不相邻的两个内角的和),即∠3+∠AED=∠2+∠C,所以∠3=∠2(等式的性质).因为∠1=∠2(已知),所以∠3=∠1(等量代换).【点评】该题主要考查了等式的性质、三角形外角的性质、全等三角形的判定等几何知识点及其应用问题;应牢固掌握三角形外角的性质、全等三角形的判定等几何知识点,这是灵活运用、解题的基础和关键.四、解答题(本大题满分26分)25.(8分)如图,已知在等边三角形ABC中,AD⊥BC,AD=AC,联结CD并延长,交AB的延长线于点E,求∠E的度数.【分析】根据等边三角形的性质得出∠CAD=30°,再利用等式的性质进行解答即可.【解答】解:∵在等边三角形ABC中,∴AB=AC(等边三角形的意义),AD⊥BC(已知),∴∠CAD=∠BAC(等腰三角形三线合一),∵∠BAC=60°(等边三角形的性质),∴∠CAD=30°(等量代换),∵AD=AC(已知),∴∠ACD=∠ADC(等边对等角),∵在△ACD中,∠ACD+∠ADC+∠CAD=180°(三角形的内角和等于180度),∴∠ACD=75°(等式的性质),∵在△ACE中,∠EAC+∠ACE+∠E=180°(三角形的内角和等于180度),∴∠E=45°(等式的性质).【点评】此题考查等边三角形的性质,关键是根据等边三角形的三边相等和三线合一的性质分析.26.(8分)如图,已知在△ABC中,AB=AC,∠MAC和∠ABC的平分线AD、BD 相交于点D,试说明△ABD是等腰三角形的理由.【分析】根据角平分线的定义和平行线的性质进行分析,最后利用等腰三角形的判定说明理由即可.【解答】解:∵AD平分∠MAC,∴∠MAD=∠CAD(角平分线的意义),∵AB=AC,∴∠ABC=∠C(等边对等角),∵∠MAC=∠ABC+∠C,即∠MAD+∠CAD=∠ABC+∠C,∴∠CAD=∠C(等式的性质),∴AD∥BC(内错角相等,两直线平行),∴∠CBD=∠D(两直线平行,内错角相等),∵BD平分∠ABC,∴∠CBD=∠ABD(角平分线的意义),∴∠ABD=∠D(等量代换),∴AB=AD(等角对等边),即△ABD是等腰三角形.【点评】此题考查等腰三角形的判定,关键是根据角平分线的定义和平行线的性质分析.27.(10分)已知,AB是圆O的直径,取一把直角三角尺,按如图位置摆放,其中直角顶点放在圆心O上,两条直角边与圆O相交于点M和点N,作ME⊥AB,垂足为点E,NF⊥AB,垂足为点F.(1)试说明EF=ME+NF的理由.(2)如果将这把直角三角尺绕圆心O旋转(点M,N与点A,B都不重合),那么EF与ME,NF之间的数量关系是否会发生变化?如果发生变化,请写出它们的数量关系;如果不发生变化,请说明理由.【分析】(1)运用HL证明△MOE≌△NOF,得到ME=OF,NF=OE,即可证明结论;(2)运用类比思想,分别探究当E、F在点O两侧时和当E、F在点O同侧时,三条线段的数量关系.【解答】解:(1)如图1所示,∵三角尺的两条直角边分别与⊙O交于M、N两点;直角顶点在圆心O上,∴OM=ON,∠MPN=90°,∵ME⊥AB,NF⊥AB,∴∠OEM=∠OFN=90°,∴∠1+∠2=∠2+∠3=90°,∴∠1=∠3,∴△MOE≌△NOF(HL),∴ME=OF,NF=OE,∴EF=OE+OF=NF+ME;(2)EF与ME、NF的数量关系发生变化当E、F在点O两侧时,如图1所示,EF=ME+NF;当E、F在点O同侧时,同(1)可证△MOE≌△NOF,∴ME=OF,NF=OE,如图2所示,当OF>OE时,EF=OF﹣OE=ME﹣NF,如图3所示,当OE>OF时,EF=OE﹣OF=NF﹣ME.【点评】本题主要考查了三角形全等的判定与性质,运用类比思想探究E、F在不同位置三线段的数量关系如何变化.。
上海市浦东新区2013-2014学年七年级下学期期末质量测试数学试题
浦东新区 2013-2014 学年度第二学期期末质量测试初一数学(完卷时间: 90 分钟,满分: 100 分)题号 一 二 三 四 总分得 分62121141 C11 A1BD221622BDEE=90° , AB CDABE=20° EDCAEA 40°B 60°C 70°D 80°C 3 MB=NDMBA = NDCDABM第2题图 CDNAM=N B AB=CDCAMCND AM=CNM N 435A 15B 16ACB第3题图C 8D 75.A B C D .6.P(m- 3 m- 1) xPA 0,-2B-2,0C0,2D4 0BD123 36a742O1113°823b_______.3第9题图9.、b°aA10ABC =64° 1= 2C =D2111BC12ABCDEFA 、 、D 、E 、F第10题图B C应,则 x= , y= , z= .13. 等腰直角三角形顶角的均分线为 4,则它的面积为.14.假如等腰三角形的顶角为60°,底边长为 5,则它的腰长 =.AADAy °zDEEH55°65°x °BBCFECDCB第12题图第15题图第17题图15.如图,已知△ ABC ,∠ ACB 的均分线 CD 交 AB 于点 D ,DE ∥ BC 交 AC 于点 E .假如 EC=2AE , AC=5,则 DE =.16. 等腰三角形有一个角是 40°,其余两个角的度数分别是.17. 如图,在△ ABC 中, AD ⊥ BC ,CE ⊥ AB ,垂足分别为 D 、E ,AD 、 CE 交于点 H ,请你增添一 个适合的条件:,使△ AEH ≌△ CEB .18.已知 A ( m+n ,1)、 B ( 3,n- 3m )是直角坐标平面内不一样的两点,当m= ,n=时, A 、B 两点对于 x 轴对称;当 m=,n=时, A 、B 两点对于原点对称 .三、解答题:( 19 题,每题3 分; 20-21 题,每题4 分; 22-23 题,每题5 分,满分 34 分)1119 13 22 ;2312 ..( )计算: 2( )计算:2 1( 3)如图,已知AC,EF,那么 A ∥ CD 吗?为何?BEDCABF第 19(3)题 图( 4)如图,画出△ ABC 的 AC 边上的高 BD ,再写出图中的直角三角形.CA B11 31 2 12 3 20.(1)计算: 282 12(结果表示为含幂的形式).( 2)如图,在△ ABC 中,已知∠ B=80°,∠ ACD =3∠ A,求∠ A 的度数 .AB C D第 20(2)题图21.如图,已知点 B、F 、C、E 在同向来线上, A B∥DE ,AB=DE ,BF=EC ,请说明△ ABC 与△ DEF全等的原因 .AEB F CD第21题图22. 如图,在△ ABC 中,已知 AB=AC ,点 D、E、F 分别在边 BC、CA、AB 上,且 BD=CE ,∠ BDF = ∠CED ,那么∠ FDE 与∠ B 相等吗?为何?AFEB D C第22题图23.如图,长方形ABCD 的两条边长分别为3、4.请画出一个直角坐标系,使x轴与 BC 平行,且点 C 的坐标是( 1, - 2),并写出其余三点的坐标.A DB C第23题图四、解答题:( 24 题 5 分, 25 题 7 分, 26 题 6 分,满分 18 分)、 C 、D 在向来线上,⊿ ABC 与⊿ ADE 均为等边三角形,请说明BD=CE 的原因 .24. 如图,点 BEABCD第 24题图25. 如图,在⊿ ABC 中,已知 D 是 BC 边的中点,过点 D 的直线 GF 交 AC 于 F ,交 AC 的平行线BG 于点 G , D E ⊥GF ,交 AC 的延伸线于点 E ,联络 EG.A( 1)说明 BG 与 CF 相等的原因 .FB DCEG第 25题图( 2)说明∠ BGD 与∠ DGE 相等的原因 .26. 如图,已知线段 AB ,此中点 A(2,0) ,点 B(- 1,2). ( 1)假如存在点 C ,使⊿ ABC 为等腰直角三角形,且以AB 为直角边,写出点C 的坐标;( 2)如有 D( - 4,- 2)、 E(1,- 4),求四边形 ABDE 的面积 .yyBB (-1,2)AA(2,0)OxOxD(-4,-2)E(1,-4)第 26(1)题图第 26(2)题图浦东新区 2013-2014 学年度第二学期期末质量抽测七年级数学试卷参照答案及评分说明6 2121A2C3D4A5C123367483210 116° 1121145151016 40° 100° 70° 70° 17 AH=BCAE=CEBE=HE3 1518 1,2 2,12 2191=22 3 2 22= 23 1 2=2 13 232= 21 6=2 513E=FA FCEA= ABF1A= CC= ABF 1 AB CD142 Rt BAD Rt BCD. (1 )20.1=2111 32 31223222113= 2 2 2 222 11 1 31= 2 2 22221 2A= xACD =3 x13x x 801 x401 A40°1B DEB= E 1BF =ECBF+FCEC+CF=BC=EF 1ABCDEF AB=DEB= E BC=EF2B =ACB= C 1BDFCEDB= CBD=CEBDF = CEDBDFCED. (ASA) 1BFD = CDE 1FDC = B+ BFD 1FDE= B 1 23.2A-31B-3-2D1,113.AB=AC ,AD=AE , BAC= EAD= 60° 2 BAC+ CAD= EAD+ CADBAD= CAE 1BADCAEAB=ACBAD= CAEAD =AEBADCAE. (SAS) 1CE=BD 125.1DBCBD=DC 1BG FCGBD= DCF 1BDGCDFBDG= CDFBD =DCGBD= DCFBDGCDF. (ASA) 1BG=CF 12DEGF.EF=EG 1DFE = DGE 1DFE = BGDBGD= DGE 1注意 1 .26. 1 C1 4,3 , C2 1,5 , C3 3, 1 ,C4 0, 3 .1 42B、Ex A、D yFGHM 1S四边形ABDES正方形 FGHMSAFBSBGDSDHESAEM62 1 2 3 1 3 4 1 2 5 1 1 42 2 2 2=20 1。
最新浦东新区度第二学期期末预备年级数学试卷及答案
A B OA O BB O AB O A浦东新区2013学年度第二学期期末质量测试六 年 级(预备年级)数 学(完卷时间:90分钟 满分:100分) 2014.6一、 选择题(本大题共6题,每小题3分,满分18分)(每题只有一个选项正确) 1.在数轴上点A 、点B 所表示的数分别是a 、b ,那么能够判断b a <的是…………( )(A ); (B ); (C ); (D ).2.下面的变形正确的是…………………………………………………………………( ) (A )由137=-x ,得713-=x ; (B )由845+=x x ,得845=+x x ;(C )由121=x ,得21=x ; (D )由2372+=-x x ,得7232+=-x x .3.某商场促销,小鱼将促销信息告诉了妈妈,小鱼妈妈假设某一商品的定价为x ,并列出不等式为()100010027.0<-⨯x ,那么小鱼告诉妈妈的信息是……………………( )(A )买两件等值的商品可减100元,再打3折,最后不到1000元;(B )买两件等值的商品可打3折,再减100元,最后不到1000元; (C )买两件等值的商品可减100元,再打7折,最后不到1000元; (D )买两件等值的商品可打7折,再减100元,最后不到1000元.题 号 一 二 三 四 五 总 分得 分4.小明某天记录的支出如图所示,不小心饼干的支出金额被墨水污染了,如果小明原来有30元,每包饼干的售价为1.3元,那么小明剩下的钱数不可能是……………………………( ) (A )0.1元; (B )0.8元; (C )1.4元; (D )2.7元. 5.下列说法中,正确的是……………………………………………………………………( ) (A )联结两点的线段叫做两点之间的距离;(B )用度量法和叠合法都可以比较两个角的大小;(C )六个面、十二条棱和八个顶点组成的图形都是长方体; (D )空间两条直线间的位置关系只有相交和平行两种.6.只利用一副(两块)三角尺不能直接拼出的角度是…………………………………( )(A )75°;(B )105°;(C )150°;(D )165°.二、 填空题(本大题共12题,每小题2分,满分24分)7.52-的相反数是 .8.计算:()835.3-- . 9.每年5月18日是国际博物馆日,2014年5月18日上海中国航海博物馆一上午参观者达9 000人,全天超过16 000人,将16 000用科学记数法表示为 . 10.当0<a ,b 0时,0<ab .(填“>”“<”或“=”) 11.二元一次方程1525=+y x 的正整数解是 .12.a 、b 表示两个有理数,规定新运算“*”为:a *b =b ma 2+(其中 m 为有理数),如果1*2=5,那么m 的值为 .13.在线段AB 延长线上顺次截取BC =CD =2AB ,如果AB =2,那么AD = . 14.如图,OP 、OQ 分别是∠AOB 、∠BOC 的平分线,如果∠POQ =52°26′,那么∠AOC = (结果用度、分、秒表示).15.一个角的补角一定比它的余角大 度.(第14题图)QPCB OA项目 支出金额(元)早餐 4 午餐 7 晚餐 15 饼干16.在长方体ABCD -EFGH 中,与平面ABCD 和平面ABFE 都平行的棱是 .17.在长方体ABCD -EFGH 中,既与平面ADHE 垂直,又与平面EFGH 平行的平面是 .18.如果一根铁丝可以折成长6分米,宽4分米,高2分米的长方体框架模型,那么用这根铁丝折成一个正方体框架模型,它的棱长是 分米.三、 简答题(本大题共6题,每小题6分,满分36分)19.计算:()⎪⎭⎫ ⎝⎛-÷-+-⨯⎪⎭⎫ ⎝⎛-3131337972.解:20.解方程:12135x x +--=.解:21.解不等式:x 15≥()246233--x ,并把它的解集在数轴上表示出来. 解:22.解不等式组:⎪⎩⎪⎨⎧->+>.,-31221302x x x解:ABCD EFGH(第16、17题图)① ②23.解方程组:⎩⎨⎧=-+=--.,0243053y x y x解: 24.解方程组:⎪⎩⎪⎨⎧=++=-+=+-.,,223243223z y x z y x z y x 解:四、作图题(本大题6分)25.线段AB 与射线AP 有一公共端点A .(1) 用直尺和圆规作出线段AB 的中点M ;(不写作图方法) (2) 用直尺和圆规作出以点B 为顶点的∠ABQ ,使∠ABQ =∠P AB ,且BQ 与AP 相交于点C .(不写作图方法) (3) 联结CM ,用量角器测量∠AMC 和∠BMC 的度数,你认为∠AMC 和∠BMC 的大小关系如何? ①②PBA第25题①②③五、解答题(本大题共2题,26题7分,27题9分,满分16分)26.学校“六一节”活动,设计了一个飞镖游戏,飞镖游戏的规则如下:如图,掷到A区和B 区的得分不同,A区为小圆内部分,B区为大圆内小圆外部分(A区、B区均不含边界,如果掷到边界上重新投掷,投掷在大圆以外的无效).现在将投掷有效的每次位置用一个点标注,统计出小红,小华和小明的有效成绩情况如下:如果小红得了65分,小华得了71分,求:(1)掷中A区、B区一次各得多少分?(2)按照这样的记分方法,小明得了多少分?解:27.小红,小华和小明准备用透明胶和66张大小相同的正方形硬纸板制作一些长方体纸盒,如图1,三人分别将正方形硬纸板按各自方案裁剪,然后各取两张制作成一个长方体纸盒,现在需要你的帮忙:(1)制作前,要画出长方体纸盒的直观图,小明只画了一部分(如图2),请你帮他画完整(不写画法);(2)如果按照设计的方案全部用完可以做成几个完整的长方体纸盒?(3)制作过程中,小明少裁剪了几张正方形硬纸板,这几张正方形硬纸板由小红和小华分别按各自的方案裁剪完,裁剪出的长方形硬纸板正好可以全部做成与(2)大小相同的无盖盒子,请问小明少裁剪了几张硬纸板?解:小明小华小红(第27题图1)(第27题图2)浦东新区2013学年度第二学期期末质量测试 六年级(预备年级)数学参考答案及评分说明一、选择题(本大题共6题,每小题3分,满分18分)(每题只有一个选项正确) 1.B ; 2.D ; 3.C ; 4.B ; 5.B ; 6.D .二、填空题(本大题共12题,每小题2分,满分24分)7.52; 8.831-; 9.4106.1⨯; 10.>; 11.⎩⎨⎧==.5,1y x 12.1;13.10; 14.104°52′; 15.90; 16.HG ; 17.ABCD ; 18.4.三、简答题(本大题共6题,每小题6分,满分36分)19.解:原式=()331992197-⨯+⨯⎪⎭⎫⎝⎛-.…………………………………………………(3分)=3319914⨯-⨯-. =114--.……………………………………………………………………(2分)=15-.…………………………………………………………………………(1分)20.解:()()152315=--+x x .…………………………………………………………(2分)156355=+-+x x .…………………………………………………………(2分)42=x .2=x .……………………………………………………………(2分)∴原方程的解为2=x .21.解:x 15≥481233+-x .……………………………………………………………(2分) x 27≥81.x ≥3.…………………………………………………………………………(2分)所以,这个不等式的解集在数轴上表示为:……………………………………(2分)22.解:由①,得 2<x .…………………………………………………………………(2分)由②,得 ()()122133->+x x .2439->+x x .55->x .1->x .………………………………………………………(3分) 所以,原不等式组的解集是21<<-x .………………………………………(1分)23.解:由①,得 53+=y x . …………………………………………………(1分)把③代入由②,得 024159=-++y y . 1313-=y .1-=y .…………………………………(2分) 把1-=y 代入③,得 2=x .……………………………………………………(2分)所以,原方程组的解是⎩⎨⎧-==.,12y x …………………………………………………(1分)24.解:由①+③,得 2433=+z x .8=+z x . ④………………………………………………(1分)由①+②×3,得 1410=-z x . ⑤…………………………………………(1分) 由④+⑤,得 2211=x .2=x .………………………………………………………(1分) 把2=x 代入④,得 6=z .……………………………………………………(1分) 把2=x ,6=z 代入②,得 4=y .……………………………………………(1分)所以,原方程组的解是⎪⎩⎪⎨⎧===.,,642z y x …………………………………………………(1分)四、作图题(本大题6分) 25.(1)作图略.……………………………………………………………………………(2分) (2)作图略.……………………………………………………………………………(2分)(3)∠AMC =∠BMC =ο90.……………………………………………………………(2分)③五、解答题(本大题共2题,26题7分,27题9分,满分16分) 26.解:(1)设掷中A 区得x 分,掷中B 区y 分.根据题意,得方程组⎩⎨⎧=+=+.,71356553y x y x ………………………………………………………………(2分)解这个方程组,得⎩⎨⎧==.,710y x …………………………………………………(2分)答:掷中A 区得10分,掷中B 区7分.(2)小明得分为:6276102=⨯+⨯(分).…………………………………(3分) 答:按照这样的记分方法,小明得了62分.27.解:(1)图略.…………………………………………………………………………(2分) (2)设可以做成x 个完整的长方体纸盒.根据题意,得方程66332=++xx x .……………………………………………………………(2分) 解这个方程,得33=x .……………………………………………………(1分) 答:可以做成33个完整的长方体纸盒.(3)设可以做成y 个完整的长方体纸盒.根据题意,得方程66632=++y y y .……………………………………………………………(2分)解这个方程,得36=y .……………………………………………………(1分)小明少裁剪的硬纸板数是5336333=-(张).……………………………(1分) 答:小明少裁剪了5张硬纸板. (注:其他做法请相应给分)。
浦东新区2013学年度高一第二学期期末质量测试稿
浦东新区2013学年度第二学期期末质量测试高一数学(答题时间:90分钟 试卷满分:100分)一、填空题(本大题满分36分)本大题共有12题,只要求直接填写结果,每个空格填对得3分,否则一律得零分.1.函数arcsin(21)y x =-的定义域是 . 2.函数32x y =+的反函数是 .3.当函数()3sin f x x =取得最小值时,x = .4. 函数()4log (0,1)a f x x a a =+>≠的图像恒经过定点P ,则点P 的坐标为 . 5.已知点()sin ,cos P a a 在第二象限,则角α的终边在第 象限. 6. 已知,2παπ⎛⎫∈⎪⎝⎭,且7cos 25α=-,则2cos α= .7. 已知函数3log ,0()9,0x x x f x x >⎧=⎨<⎩,则1()3f f ⎡⎤=⎢⎥⎣⎦. 8. 函数22()log (1)f x x =+的值域是 . 9. 已知32cos sin =+αα,且),0(πα∈,则sin cos αα-= .10. 1的矩形木块,在桌面上作无滑动翻滚,翻滚到第三面后被一小木块挡住,使木块与桌面成30角,则点A 走过的路程是____________.11. 若关于x 的不等式2log 0c x x -≤在1(0,]2x ∈上恒成立,则实数c 的取值范围是 . 12. 设函数sin (0)y x x π=<<的图像为曲线C ,动点(,)A x y 在曲线C 上,过A 且平行于x 轴的直线交曲线于点(,B A B 可以重合),设线段AB 的长为()f x ,则函数()f x 的单调递增区间为 .二、选择题(本大题满分12分)本大题共有4题,每题都给出代号为A 、B 、C 、D 的四个结论,其中有且只有一个结论是正确的,每题答对得3分,否则一律得零分.13.函数sin 2y x =是一个…………………………………………………………………( )A .周期为π的奇函数B .周期为π的偶函数C .周期为2π的奇函数 D .周期为2π的偶函数 14.把函数cos()6y x π=-向左平移()0>m m 个单位,所得的图像关于y 轴对称,则m 的最小值为……………………………………………………………………………………( )A .12πB .6πC .3π D .2π 15.某人要作一个三角形,要求它的三条高的长度分别为51,111,131,此人将……………( )A .不能作出满足要求的三角形B .作出一个锐角三角形C .作出一个直角三角形D .作出一个钝角三角形16.对函数()210log 10xf x x x-=-++,有下列结论:()()(1)0f f ππ-+=;()(2)f x 在定义域内不是单调函数;(3)若[]6,6x ∈-;则函数最大值为8;(4)值域为R . 其中结论正确的数目为……………………………………………………………………………… ( ) A .1个B .2个C .3个D .4个三、解答题(本大题满分52分)本大题共有5题,解答下列各题必须写出必要的步骤.17.(本题满分8分)已知3cos ,5α=-α是第二象限的角,求sin()2tan()παπα-- 值.18.(本题满分8分)解方程222log (4)log (1)1log (1)x x x ++-=++.19. (本题满分10分,第1小题4分,第2小题6分)在平面直角坐标系中,以x 轴正半轴为始边的两个锐角βα、,它们的终边分别交单位圆于B A 、两点.(1)若B A 、两点的横坐标分别是1010和552,求sin()αβ+; (2)若3cos cos 2αβ+=,sin sin 1αβ+=,求()βα-cos 的值.20.(本题满分12分,第1小题6分,第2小题6分)已知函数()22cos 2x f x a x b ⎛⎫=+ ⎪⎝⎭, (1)当1=a 时,求()x f 的最小正周期和单调递增区间; (2)当[]π,x 0∈时,()x f 的值域是[]43,,求b ,a 的值.21. (本题满分14分,第1小题6分,第2小题8分)已知在锐角ABC ∆中,c b a 、、分别为角C B A 、、所对的边,且(2)cos cos c b A a B -=. (1) 求角A 的值; (2) ,则求c b +的取值范围.浦东新区2013学年度第二学期期末质量测试高一数学(答题时间:90分钟 试卷满分:100分)一、填空题(本大题满分36分)本大题共有12题,只要求直接填写结果,每个空格填对得3分,否则一律得零分.1.函数arcsin(21)y x =-的定义域是 []0,1 .2.函数32x y =+的反函数是 3log (2)(2)y x x =-> . 3.当函数()3sin f x x =取得最小值时,x = 2,()2k k Z ππ-∈ .4. 函数()4log (0,1)a f x x a a =+>≠的图像恒经过定点P ,则点P 的坐标为 ()1,4 . 5.已知点()sin ,cos P a a 在第二象限,则角α的终边在第 四 象限. 6. 已知,2παπ⎛⎫∈⎪⎝⎭,且7cos 25α=-,则2cos α= 35 .7. 已知函数3log ,0()9,0xx x f x x >⎧=⎨<⎩,则1()3f f ⎡⎤=⎢⎥⎣⎦19 .8. 函数22()log (1)f x x =+的值域是 [)0,+∞ .9. 已知32cos sin =+αα,且),0(πα∈,则sin cos αα-= 43 .10. 1的矩形木块,在桌面上作无滑动翻滚,翻滚到第三面后被一小木块挡住,使木块与桌面成30角,则点A 走过的路程是_32π+_. 11. 若关于x 的不等式2log 0c x x -≤在1(0,]2x ∈上恒成立,则实数c 的取值范围是1,116⎡⎫⎪⎢⎣⎭. 12. 设函数sin (0)y x x π=<<的图像为曲线C ,动点(,)A x y 在曲线C 上,过A 且平行于x 轴的直线交曲线于点(,B A B 可以重合),设线段AB 的长为()f x ,则函数()f x 的单调递增区间为 ,2ππ⎡⎫⎪⎢⎣⎭. 二、选择题(本大题满分12分)本大题共有4题,每题都给出代号为A 、B 、C 、D 的四个结论,其中有且只有一个结论是正确的,每题答对得3分,否则一律得零分.13.函数sin 2y x =是一个…………………………………………………………………( A )A .周期为π的奇函数B .周期为π的偶函数C .周期为2π的奇函数 D .周期为2π的偶函数 14.把函数cos()6y x π=-向左平移()0>m m 个单位,所得的图像关于y 轴对称,则m 的最小值为……………………………………………………………………………………( B )A .12πB .6πC .3π D .2π15.某人要作一个三角形,要求它的三条高的长度分别为51,111,131,此人将……………( D )A .不能作出满足要求的三角形B .作出一个锐角三角形C .作出一个直角三角形D .作出一个钝角三角形16.对函数()210log 10xf x x x-=-++,有下列结论:()()(1)0f f ππ-+=;()(2)f x 在定义域内不是单调函数;(3)若[]6,6x ∈-;则函数最大值为8;(4)值域为R . 其中结论正确的数目为……………………………………………………………………………… ( C ) A .1个B .2个C .3个D .4个三、解答题(本大题满分52分)本大题共有5题,解答下列各题必须写出必要的步骤.17.(本题满分8分)已知3cos ,5α=-α是第二象限的角,求sin()2tan()παπα-- 值.解:3cos ,5α=-α是第二象限的角得4tan 3α=-………3分原式cos tan αα=-……………………………………………3分920=-………………………………………………2分18.(本题满分8分)解方程222log (4)log (1)1log (1)x x x ++-=++.解:原方程变形为22log (4)(1)log 2(1)x x x +-=+………………2分得(4)(1)2(1)x x x +-=+………………………………………2分 解得2,3x x ==-…………………………………………………2分 经检验3x =-为原方程的增根.所以原方程的解为2x =…………………………………………2分19. (本题满分10分,第1小题4分,第2小题6分)在平面直角坐标系中,以x 轴正半轴为始边的两个锐角βα、,它们的终边分别交单位圆于B A 、两点.(1)若B A 、两点的横坐标分别是1010和552,求sin()αβ+; (2)若3cos cos 2αβ+=,sin sin 1αβ+=,求()βα-cos 的值.解:(1)由题意得cos αβ==,且βα,为锐角…………1分得sin 105αβ==………………………………………2分则()sin 10αβ+=………………………………………………1分 (2)由题意得3cos cos ,sin sin 12αβαβ+=+= 分别两边平方得:49cos cos cos 2cos 22=++ββαα…………2分 1sin sin sin 2sin22=++ββαα……………2分两式相加得: ()5cos 8αβ-=…………………………………2分20.(本题满分12分,第1小题6分,第2小题6分)已知函数()22cos 2x f x a x b ⎛⎫=+ ⎪⎝⎭, (1)当1=a 时,求()x f 的最小正周期和单调递增区间;(2)当[]π,x 0∈时,()x f 的值域是[]43,,求b ,a 的值.解:(1)()b x sin b x cos x sin x f ++⎪⎭⎫ ⎝⎛+=+++=16213π…………………………2分 2T π=………………………………………………………………………………2分 Z k ,k x k ∈+≤+≤-22622πππππ 单调递增区间为()Z k k ,k ∈⎥⎦⎤⎢⎣⎡+-32322ππππ …………………………………2分 (2)()b a x sin a x f ++⎪⎭⎫ ⎝⎛+=62π ⎥⎦⎤⎢⎣⎡-∈⎪⎭⎫ ⎝⎛+⇒⎥⎦⎤⎢⎣⎡∈+12166766,x sin ,x ππππ…2分 ①0>a ()[]b a ,b x f +∈⇒3⎩⎨⎧=+=⇒433b a b ⎪⎩⎪⎨⎧==⇒331b a …………………………2分 ②0<a ()[]⎪⎩⎪⎨⎧=-=⇒⎩⎨⎧==+⇒+∈⇒4314333b a b b a b ,b a x f ………………………2分21. (本题满分14分,第1小题6分,第2小题8分) 已知在锐角ABC ∆中,c b a 、、分别为角C B A 、、所对的边,且(2)cos cos c b A a B -=.(1) 求角A 的值;(2) ,则求c b +的取值范围.解:(1)(2sin sin )cos sin cos C B A A B -=......................................................2分 C B A B A B A A C s i n )s i n (s i n c o s c o s s i n c o s s i n 2=+=+=⇒ (2)分因为在锐角ABC ∆中,所以…………………………………2分 (2所以)sin (sin 2C B c b +=+………………………………………………………………2分2分2分所以(3,b c +∈……………………………………………………………………2分。
浦东新区2013学年度八年级第二学期期末考试物理试卷
浦东新区2021学年度第二学期期末质量测试八年级物理试题时间70分钟总分值100分考生注意:答题时,务必按答题要求在答题纸规定的位置作答,在草稿纸或本试卷上答题一律无效。
一、选择题〔共20分〕以下各题均只有一个正确选项,请将正确选项填写在答题纸的相应位置处。
1.人体的正常体温是A.33℃B.35℃C.37℃D.39℃2.人们使用定滑轮是利用它能A.省力B.省距离C.省功D.改变力的方向3.雕刻师将一块玉石雕刻成一件工艺品过程中,保持不变的是A.质量B.体积C.重力D.密度4.对正在做匀速直线运动的物体来说,其可能等于零的是A.内能B.动能C.重力势能D.机械能5.小鹏将一桶重200牛的饮用水从底楼搬到二楼,小鹏对这桶水做功约A.60焦B.600焦C.6×103焦D.6×104焦6.如图1所示的几种杠杆类工具,属于省力杠杆的是第1 页A.开瓶器B.投石机图 1 7.以下实例中,属于通过做功增加物体内能的是A.夏天,烈日下的人会感觉很热B.冬天,人们双手摩擦取暖C.在食堂,用高温的水蒸气蒸饭D.在野外,人们用篝火取暖8.酒精的比热容比水小。
质量与温度都一样的水与酒精放出一样热量后,比拟水与酒精的温度A.水较高B.酒精较高C.一样高D.无法判断第2 页第 3 页 9.以下研究实例中,所采用的科学方法一样的是①学习热量及升高的温度的关系时,用一样质量的水进展研究 ②学习分子动理论时,用扩散实验证明分子是不停息地运动的 ③学习密度概念时,把物质的密度及比热容作类比④学习质量及体积的关系时,用同种金属进展研究A .①及②B .②及③C .①及④D .③及④10.如图2所示,甲、乙两个实心均匀正方体的质量相等,假设沿竖直方向分别在两个正方体右侧截去一样的厚度,那么甲、乙A .剩余局部的质量m ′甲< m ′乙B .剩余局部的体积V ′甲= V ′乙C .截去局部的质量∆m 甲< ∆m 乙D .截去局部的体积∆V 甲= ∆V 乙二、填空题〔共32分〕请将结果填入答题纸的相应位置。
上海市浦东新区2013-2014学年七年级(下)期末质量测试数学试题(学生版)
浦东新区2013-2014学年度第二学期期末质量测试初一数学(完卷时间:90分钟,满分:100分)题号一二三四总分得分一、选择题:(本大题共6题,每题2分,满分12分)1.41的算术平方根是……………………………………………………………………()(A )21;(B )21-;(C )161;(D )21±.2.如图,在△BDE 中,∠E =90°,AB ∥CD ,∠ABE =20°,则∠EDC 的度数是………()(A )40°;(B )60°;(C )70°;(D )80°.3.如图,已知MB=ND ,∠MBA =∠NDC ,下列哪个条件不能判定△ABM ≌△CDN …………………………………………()(A )∠M =∠N ;(B )AB=CD ;(C )AM ∥CN ;(D )AM=CN .4.如果三角形的两边分别为3和5,那么这个三角形的周长可能是…………………………………………()(A )15;(B )16;(C )8;(D )7.5.下列关于等腰三角形的性质叙述错误的是…()(A )等腰三角形两底角相等;(B )等腰三角形底边上的高、底边上的中线、顶角的平分线重合;(C )等腰三角形是中心对称图形;(D )等腰三角形是轴对称图形.6.点P (m -3,m -1)在直角坐标系的x 轴上,则点P 的坐标为………………………………()(A )(0,-2);(B )(-2,0);(C )(0,2);(D )(4,0)二、填空题:(本大题共12题,每题3分,满分36分)7.()=-24.8.计算:=÷⨯3132_______.9.如图,直线a 、b 的夹角是°.10.如图,已知∠ABC =64°,∠1=∠2,则∠C =.11.判定两个三角形全等至少要有个元素对应相等,其中至少要有一对相等.12.如图,已知△ABC ≌△DEF ,顶点A 、B 、C 分别与顶点D 、E 、F 对应,则x =,y =,z =.13.等腰直角三角形顶角的平分线为4,则它的面积为.14.如果等腰三角形的顶角为60°,底边长为5,则它的腰长=.15.如图,已知△ABC ,∠ACB 的平分线CD 交AB 于点D ,DE ∥BC 交AC 于点E .如果EC =2AE ,AC =5,则DE =.16.等腰三角形有一个角是40°,其他两个角的度数分别是.17.如图,在△ABC 中,AD ⊥BC ,CE ⊥AB ,垂足分别为、、交于点H ,请你添加一个适当的条件:,使△AEH ≌△CEB .18.已知A (m+n ,1)、B (3,n -3m )是直角坐标平面内不同的两点,当m =,n =时,A 、B 两点关于x 轴对称;当m =,n =时,A 、B 两点关于原点对称.三、解答题:(19题,每小题3分;20-21题,每小题4分;22-23题,每题5分,满分34分)19.(1)计算:()2232÷-;(2)计算:1231211⨯+⎪⎭⎫ ⎝⎛--.(3)如图,已知,,F E C A ∠=∠∠=∠那么A B ∥CD 吗?为什么?(4)如图,画出△ABC 的AC 边上的高BD ,再写出图中的直角三角形.20.(1)计算:2133********-⎪⎭⎫ ⎝⎛⨯⎪⎪⎭⎫ ⎝⎛÷⎪⎭⎫ ⎝⎛(结果表示为含幂的形式).(2)如图,在△ABC中,已知∠B=80°,∠ACD=3∠A,求∠A的度数.21.如图,已知点B、F、C、E在同一直线上,A B∥DE,AB=DE,BF=EC,请说明△ABC与△DEF 全等的理由.22.如图,在△ABC中,已知AB=AC,点D、E、F分别在边BC、CA、AB上,且BD=CE,∠BDF=∠CED,那么∠FDE与∠B相等吗?为什么?23.如图,长方形ABCD的两条边长分别为3、4.请画出一个直角坐标系,使x轴与BC平行,且点C 的坐标是(1,-2),并写出其他三点的坐标.四、解答题:(24题5分,25题7分,26题6分,满分18分)24.如图,点B、C、D在一直线上,⊿ABC与⊿ADE均为等边三角形,请说明BD=CE的理由.25.如图,在⊿ABC中,已知D是BC边的中点,过点D的直线GF交AC于F,交AC的平行线BG于点G,D E⊥GF,交AC的延长线于点E,联结EG.(1)说明BG与CF相等的理由.(2)说明∠BGD与∠DGE相等的理由.26.如图,已知线段AB,其中点A(2,0),点B(-1,2).(1)如果存在点C,使⊿ABC为等腰直角三角形,且以AB为直角边,写出点C的坐标;(2)若有D(-4,-2)、E(1,-4),求四边形ABDE的面积.。
上海市浦东新区2013-2014学年八年级下学期期末质量测试数学试题(答案不全)
浦东新区2013-2014学年度第二学期期末质量测试初二数学(完卷时间:100分钟,满分:100分) 2014.6一、选择题:(本大题共6题,每题3分,满分18分)(每题只有一个选项正确)1.下列方程中,不是整式方程的是…………………………………………………………( )B(A );32532=-x x (B );262x x x =- (C );07322=-x(D );0325=-x x 2.下面各对数值中,属于方程032=-y x 的解的一对是………………………………( )D(A )⎩⎨⎧==;3,0y x (B )⎩⎨⎧==;0,3y x (C )⎩⎨⎧==;9,3y x (D )⎩⎨⎧==.3,3y x 3、如图,已知一次函数b kx y +=的图像经过A 、B 两点,那么不等式0>+b kx 的解集是( )B(A )x>5; (B )x<5;(C )x>3; (D )x<3.4.下列事件:①浦东明天是晴天,②铅球浮在水面上,③平面中,多边形的外角和都等于360度,属于确定时间的个数是 ……………………………………( )B(A )0个; (B )1个; (C )2个; (D )3个.5.下列各式错误的是……………………………………………… ( )A(A );0)(=-+m m(B );00= (C );m n n m +=+(D ));(n m n m -+=- 6、如果菱形的两条对角线长分别是10cm 和24cm ,那么这个菱形的周长为( )C(A )13cm; (B )34cm; (C )52cm; (D )68cm,7、只利用一副(两块)三角尺不能直接拼出的角度是………………………………………( )D(A )︒75; (B )︒105; (C )︒150; (D )︒165.二、填空题:(本大题共12题,每题2分,满分24分)8、如果1)2(-++=m x m y 是常值函数,那么=m .9、已知直线l 与直线x y 4-=平行,且截距为6,那么这条直线l 的表达式是________________.10、如果一次函数b kx y +=的图像经过第二、三、四象限,那么函数y 的值随着自变量x 的增大而 .11、方程2342-=-x x x 的解是 . 12、方程组⎩⎨⎧=+-=2,122y x x y 的解是 . 13、木盒中有1个红球和2个黄球,这三个球除颜色外其他都相同,从盒子里先摸出一个球,然后放回去摇匀后,再摸出一个球.两次都摸到黄球的概率是 .14、如果一个多边形的每一个内角都等于144度,那么这个多边形的边数是在____________.15、如果一个四边形要成为矩形,那么对角线应满足的条件是 . 16、已知矩形ABCD 的长和宽分别为8和6,那么顶点A 到对角线BD 的距离等于 .17、如果一个四边形的两条对角线长分别为cm 7和cm 12,那么顺次联结这个四边形各边中点所得四边形的周长是 cm .18、如图,已知在梯形ABCD 中,,7,2,75,30,//==︒=∠︒=∠BC AD C B BC AD那么AB= .19、如图,已知E 是□ ABCD 的边AB 上一点,将ADE ∆沿直线DE 折叠,点A 恰好落在边BC 上的点F 处,如果BEF ∆的周长为7,CDF ∆的周长为15,那么CF 的长等于 .三、简答题(本大题共8题,满分58分)20、(本题满分4分)如图,已知向量c b a 、、。
浦东新区2013学年度第二学期高一化学期末考试试题及答案
浦东新区2013学年度第二学期期末质量测试高一化学试卷考生注意:1.本试卷考试时间为90分钟,必做题100分,附加题20分,满分共120分。
2.本试卷分为试卷和答题纸两部分,请考生将答案写在答题纸上。
相对原子质量:H:1 C:12 N:14 O:16 Na:23 S:32 Cu:64一、选择题(每题只有一个正确选项,每题2分,共40分)1.酸雨的形成主要是由于A.森林遭到乱砍滥伐,破坏了生态平衡B.工业上大量燃烧含硫燃料C.大气中二氧化碳的含量增多D.使用氟利昂等制冷剂2.电解质有强弱之分,属于弱电解质的物质是A.氢氧化钠溶液B.水C.氯化钠固体D.硫酸钡3.属于人工固氮的是A.分离液态空气制氮气B.闪电时N2转化为NOC.工业合成氨D.豆科作物根瘤菌将N2转化为NH34.常温下,不能区别浓硫酸、稀硫酸的方法是A.分别加入铁片B.分别加入蔗糖C.分别滴在纸上D.分别加入铜片5.在空气中易被氧化的是A.Na2SO3B.盐酸C.浓硫酸D.稀硫酸6.检验试管中盛有的少量白色固体是铵盐的方法是A.将固体加热,用湿润的红色石蕊试纸在试管口检验,看是否变蓝B.加水溶解,用pH试纸测溶液的酸碱性C.加入NaOH溶液,加热,再滴入酚酞试液D.加入NaOH溶液,加热,用湿润的红色石蕊试纸在试管口检验,看是否变蓝7.在3NO2 + H2O → 2HNO3 + NO的反应中,NO2A.是还原剂B.既是氧化剂又是还原剂C.是氧化剂D.既不是氧化剂又不是还原剂通直流电Cl2↑+H2↑+2NaOH.有关电解饱和食8.电解饱和食盐水的反应为2NaCl2+H2O−−−−→盐水的说法正确的是A.氯气在阳极产生B.电解过程中Na+浓度不变C.水既不是氧化剂也不是还原剂D.反应过程是把化学能转化成电能9.在pH都等于1的盐酸和硫酸溶液中,物质的量浓度相等的是A.盐酸与硫酸B.H+C.Cl-与SO42-D.H+与SO42-10.容量瓶上未必有固定的A.溶液浓度B.容量C.定容刻度D.配制温度11.与100 mL 0.1 mol/L硫酸钾溶液里钾离子物质的量浓度相同的是A.100 mL0.2 mol/L氯化钾溶液B.200 mL 0.1 mol/L硝酸钾溶液C.100 mL 0.1 mol/L硝酸钾溶液D.50 mL 0.2 mol/L碳酸钾溶液(g)+5O2(g) 4NO(g)+6H2O(g) 在2 L的密闭容器中进行,1 min后,12.反应4NHNH3减少了0.12 mol,则平均每分钟浓度变化正确的是A.NO∶0.08mol/L B.H2O∶0.12 mol/LC.NH3∶0.12 mol/L D.O2∶0.075 mol/L13.哈伯因发明了由氮气和氢气合成氨气的方法而获得1918年诺贝尔化学奖。
2013浦东新区高三二模物理答案
— 1 —浦东新区2012学年度第二学期质量抽测高三物理试卷参考答案2013.44分,共56分。
四.填充题。
本题共5小题,每小题4分,共20分。
21.a 流向b ;小于。
22A .3:2;1:1。
22B .2∶1;1∶8 23.0.42 rad/s ;8.77m/s 2。
【(8.76~8.82)m/s 2】 24.BIl ;mg /4。
25.先变大后变小;一直变小。
五.实验题。
本题4小题,共2426.光电门;下,机械能总量保持不变。
27.(1)见右图。
(2)M 。
(3)变大,变小, 不变。
28.(1)11273t p p ⎛⎫=+ ⎪⎝⎭; (2)( B ) 29.不均匀;2kf l=。
33Hz·m 2,玻璃的密度,硬度等(答出一个就给分)。
— 2 —图(a )图(b ) 六.计算题(本大题4小题,共50分) 30.(10分)解:(1)圆柱形容器内部横截面积为S ,容器内被封闭气体 初态:1V SH =;10P P =; 末态:2()V S H h =-∆;20P P gh ρ=+; 气体作等温变化,由玻意耳定律,有 1122PV PV =即 00()()P SH P gh S H h ρ=+-∆得0ghHh P ghρρ∆=+ (2)设温度至少升高到t ’℃,气体作等容变化,由查理定律,得00273273'P P ght t ρ+=++得00()(273)'273P gh t t P ρ++=-(℃)31.(12分)解:(1)由图(b )可知,AB 段加速度221 2.00m/s 0.5m/s 4.00v a v ∆-===∆-根据牛顿第二定律,有 cos (sin )F mg F ma αμα--=得 20.50.5210N 11N cos sin 0.60.50.8ma mg F μαμα+⨯+⨯⨯===++⨯(2)在BC 段 2sin mg ma α=22sin 8m/s a g α==小物块从B 到C 所用时间与从C 到B 所用时间相等,有222 2.0s 0.5s 8.0B v t a ⨯=== (3)小物块从B 向A 运动过程中,有3mg ma μ=2230.510m/s 5m/s a g μ==⨯=滑行的位移 223 2.0 2.0m 0.4m 4.0m 4.0m 22522t AB vv s s vt t a ===<===⨯=⨯所以小物块不能返回到A 点,停止运动时,离B 点的距离为0.4m。
浦东新区2013学年度第二学期期末质量测试
浦东新区2013学年度第二学期期末质量测试高三英语试卷第I卷(103分)I. Listening ComprehensionSection ADirections: In Section A, you will hear ten short conversations between two speakers. At the end of each conversation, a question will be asked about what was said. The conversations and the questions will be spoken only once. After you hear a conversation and the question about it, read the four possible answers on your paper, and decide which one is the best answer to the question you have heard.1. A. A hotel. B. A shopping center. C. A traffic light. D. A bus stop.2. A. 5:00. B. 4:45. C. 5:15. D. 4:10.3. A. Cook. B. Shop assistant. C. Saleswoman. D. Waitress.4. A. Parent and child. B. Policeman and witness.C. Bus driver and passenger.D. Receptionist and guest.5. A. She is not interested in movies. B. She thinks it is good news.C. She is too busy to go to the cinema.D. She has no idea about the news.6. A. It’s good for health to have some ice cream.B. He can’t eat any snacks because of his toothache.C. He doesn’t believe in what the doctor says.D. He can’t eat ice cream though he feels hot.7. A. Nervous. B. Surprised. C. Calm. D. Happy.8. A. Trying to draw a map. B. Painting the dining room.C. Discussing a house plan.D. Cleaning the kitchen.9. A. He has an ear problem. B. He never listens.C. He has never missed a meeting.D. He has something important to do.10. A. She can’t say much about her travel. B. She didn’t see the advertisement.C. She speaks highly of the advertisement.D. She doesn’t like her travel very much.Section BDirections: In Section B, you will hear two short passages, and you will be asked threequestions on each of the passages. The passages will be read twice, but the questions will be spoken only once. When you hear a question, read the four possible answers on your paper and decide which one would be the best answer to the question you have heard.Questions 11 through 13 are based on the following passage.11. A. Because he wanted to stay connected with nature.B. Because he thought farming was a promising job.C. Because he was tired of being a chef.D. Because he found farming interesting.12. A. Giving some financial support. B. Offering specialized business training.C. Promoting farm foods.D. Providing the link with the landowners.13. A. Many Americans have developed a taste for fresh local foods.B. More people in America tend to choose farming as a job than before.C. Local governments in America encourage people to take up farming as a job.D. The United States is among the world’s leading agricultural nations.Questions 14 through 16 are based on the following passage.14. A. Famous creative individuals. B. A major scientific discovery.C. The mysteriousness of creativity.D. Creativity as shown in arts.15. A. Creative imagination. B. Natural curiosity.C. Logical reasoning.D. Critical thinking.16. A. It is beyond ordinary people. B. It is part of everyday life.C. It is yet to be fully understood.D. It is a unique human nature.Section CDirections: In Section C, you will hear two longer conversations. The conversations will be read twice. After you hear each conversation, you are required to fill in the numbered blanks with the information you have heard. Write your answers on your answer sheet.Blanks 17 through 20 are based on the following conversation.Complete the form. Write ONE WORD for each answer.A Police RecordWitness’ name: _____17_____Robbery scene: A _____18_____ storeInformation about the robberHeight: _____19_____ feetHair color: DarkAge: Around 30Clothes: A dark ____20____ and a light shirtBlanks 21 through 24 are based on the following conversation.Complete the form. Write NO MORE THAN THREE WORDS for each answer.What is the name of the course? ____21____.What problem does the woman have? She ____22____ the reference books.What is the reasonable excuse for extension? Extensions are usually given to students who ____23____.What is the Professor’s final decision?The woman is allowed another____24____ to prepare her assignment.II. Grammar and VocabularySection ADirections: After reading the passages below, fill in the blanks to make the passages coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.(A)One night I decided to spend some time building a happier and closer relationship with my daughter. As she _____25_____ (ask) me to play chess with her, I suggested a game and she eagerly accepted. It was a school night, however, and at nine o’clock my daughter asked if I _____26_____ hurry my moves, because she needed to go to bed; she had to get up at six in the morning. I knew she had strict sleeping habits, _____27_____ I thought she ought to be able t o give up some of this strictness. I said to her, “What fun it is! Why not stay up late for once. ” We played on for _____28_____ fifteen minutes, during which time she looked anxious. Finally she said, “Please, Daddy, do it quickly.” “No,” I replied. “____29_____ you want to play it well, you’re going to play it slowly.” And so we continued until suddenly my daughter burst into tears, and admitted _____30_____ (beat).Clearly, I had made a mistake. I had started the evening wanting to have a happy time with my daughter but had allowed my intention to win to become more important than my relationship with my daughter. When I was a child, my desire _____31_____ (win) served me well. As a parent, I realized that it got in my way. So I had to change.(B)While income worry is rather a common problem of the aged, loneliness is another problem that aged parents may face. Of all the reasons _____32_____ explain their loneliness, a large geographical distance between parents and their children is the major one. This phenomenon is commonly known as “Empty Nest Syndrome” (空巢综合症).In order to seek _____33_____ (good) chances outside their countries, many young people have gone abroad, _____34_____ (leave) their parents behind with no clear idea of when they will return home. Their parents spend countless lonely days and nights taking care of themselves, in the hope that someday their children will come back to stay with them. Thefact ____35____ most of these young people have gone to Europeanized or Americanized societies makes it unlikely that they will hold as tightly to the value of duty _____36_____ they would have if they had not left their countries. Whatever the case, it has been noted that the values they hold do not necessarily match _____37_____ they actually do. This geographical and cultural distance also prevents the grown-up children from providing timely response _____38_____ the needs of their aged parents.The situation in which grown-up children live far away from their aged parents _____39_____ (de scribe) as “distant parent phenomenon”, _____40_____ is common both in developed countries and in developing countries. Our society has not yet been well prepared for “Empty Nest Syndrome”.Section BDirections: Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need.A. rejectedB. eventuallyC. variousD. readyE. commercialiseF. prospectG. deliveredH. employedI. samplesJ. transplantsK. inevitablySince its appearance in 2007, researchers at San Diego-based Organovo have experimented with printing a wide variety of tissues, including bits of lung, kidney and heart muscle. Now the world’s first publicly traded 3D bioprinting company is getting ____41____ for production. In January slices of human liver tissue were ____42____ to an outside laboratory for testing. These ____43____ take about 30 minutes to produce, says Keith Murphy, the firm’s chief executive. Later this year Organovo aims to begin commercial sa les.The invention of 3D printing provided a technology now ____44____ to manufacture everything from aircraft parts to body parts. But the ____45____ of 3D bioprinting is even brighter: to create human tissues for research, drug development and testing, and ____46____ as replacement organs, such as a kidney, for patients desperately in need of ____47____. Bioprinted organs could be made from patients’ own cells and thus would not be ____48____ by their immune(免疫的) systems. They could also be manufactured on demand.At present only a few of companies are trying to ____49____ the production of bioprinted tissues. But Thomas Boland, an early pioneer in the field, says that plenty of others are interested. He also estimates that about 80 teams at research institutions around the world are now trying to print ____50____ small pieces of tissues such as skin, blood vessels, liver, lung and heart. “It’s a wonderful technology to build three-dimensional biological structures,” says Gabor Forgacs, who co-founded Organovo in 2007.III. Reading ComprehensionSection ADirections: For each blank in the following passages there are four words or phrases marked A, B, C and D. Fill in each blank with the word or phrase that best fits the context.It is officially known as The Swiss Re Tower, or 30 St MaryAxe. As a typical example of green architecture in London, whatis most remarkable about the building is its energy-efficiency.____51____ its artful design and some fancy technology, it is expected to consume up to 50% less energy than a conventional office building. Green architecture is ____52____ the way buildings are designed, built and run.Supporters of green architecture argue that the approach has many ____53____. In the case of a large office, for example, the ____54____ of green design techniques and clever technology can not only reduce energy consumption and environmental impact, but also reduce running costs, create a more ____55____ working environment, improve employee’s health and productivity, reduce legal liability, and ____56____ property values and rental returns.Going green saves money by reducing long-term energy costs: a survey of 99 green buildings in America found that on average, they use 30% less energy than conventional buildings. So any additional building costs can be ____57____ quickly. The traditional approach of trying to minimize construction costs, ____58____, can lead to higher energy bills and wasted materials.Green buildings can also have less obvious ____59____ benefits. The use of natural daylight in office buildings, for example, besides reducing energy costs, also seems to make workers more productive. Lockheed Martin, an aerospace firm, found that absenteeism(缺勤) ____60____ by 15% after it moved 2,500 employees into a new green building in Sunnyvale, California. ____61____, the use of daylight in shopping complexes appears to increase ____62____. It also found that students in naturally lit classrooms performed up to 20% better. The ____63____ in productivity paid for the building’s higher construction costs within a year.Despite its benefits and its growing popularity, green architecture is still not as popular as expected. The main ____64____ is co-ordination(协调), for green buildings require much more planning by architects, engineers, builders and developers than traditional buildings. But, without doubt, green architecture will ____65____ to reshape the construction industry over the next five years, with ever more innovative, energy-efficient and environmentally friendly buildings. “No one is doing this for fun,”he says. “There’s too much at risk.”51. A. In place of B. Thanks to C. In spite of D. In addition to52. A. giving B. discovering C. changing D. paving53. A. benefits B. factors C. techniques D. impacts54. A. contrast B. completion C. manufacture D. combination55. A. tense B. pleasant C. fierce D. temporary56. A. involve B. enhance C. share D. show57. A. recovered B. gained C. counted D. valued58. A. in return B. for instance C. by contrast D. in general59. A. environmental B. psychological C. academic D. economic60. A. multiplied B. estimated C. record e d D. dropped61. A. Similarly B. Contrarily C. Consequently D. Necessarily62. A. visits B. relations C. sales D. satisfactions63. A. performance B. confidence C. increase D. equal64. A. interest B. progress C. solution D. problem65. A. deserve B. help C. work D. affordSection BDirections: Read the following passages. Each passage is followed by several questions or unfinished statements. For each of them there are four choices marked A, B, C and D. Choose the one that fits best according to the information given in the passage you have just read.(A)The person who set the course of my life was a school teacher named Marjorie Hurd. When I stepped off a ship in New York Harbor in 1949, I was a nine-year-old war refugee, who had lost his mother and was coming to live with the father he did not know. My mother, Eleni Gatzoyiannis, had been imprisoned and shot for sending my sisters and me to freedom.I was thirteen years old when I entered Chandler Junior High. Shortly after I arrived, I was told to select a hobby to pursue during “club hours.” The idea of hobbies and clubs made no sense to my immigrant ears, but I decided to follow the prettiest girl in my class. She led me into the presence of Miss Hurd, the school newspaper adviser and English teacher.A tough woman with salt-and-pepper hair and determined eyes, Miss Hurd had no patience with lazy bones. She drilled us in grammar, assigned stories for us to read and discuss, and eventually taught us how to put out a newspaper. Her introduction to the literary wealth of Greece gave me a new perspective on my war-torn homeland, making me proud of my origins. Her efforts inspired me to understand the logic and structure of the English language. Owing to her inspiration, during my next twenty-five years, I became a journalist by profession.Miss Hurd retired at the age of 62. By then, she had taught for a total of 41 years. Even after her retirement, she continually made a project of unwilling students in whom she spied a spark of potential. The students were mainly from the most troubled homes, yet she alternately bullied and charmed them with her own special brand of tough love, until the spark caught fire.Miss Hurd was the one who directed my grief and pain into writing. But for Miss Hurd, I wouldn’t have become a reporter. She was the catalyst that sent me into journalism and indirectly caused all the good things that came after.66. What does the underlined sentence in Paragraph Two most probably mean?A. Hobbies and clubs did not interest the author.B. The author turned a deaf ear to joining clubs.C. Hobbies and clubs were inaccessible to immigrants like the author.D. The author had no idea what hobbies and clubs were all about.67. Which of the following caused the author to think of his homeland differently?A. Stepping on the American soil for the first time.B. Her mother’s miserable death.C. Being exposed to Greek literary works.D. Following the prettiest girl in his class.68. It can be inferred from Paragraph Four that ____________.A. Miss Hurd’s contribution was recognized across the nationB. Students from troubled homes preferred Miss Hurd’s teaching styleC. The students Miss Hurd taught were all finally firedD. Miss Hurd employed a unique way to handle these students69. The passage is mainly concerned with _____________.A. how the author became a journalistB. the importance of inspiration in one’s lifeC. the teacher who shaped the author’s lifeD. factors contributing to a successful career(B )About PISAThe Program for International StudentAssessment (PISA) is a triennialinternational survey which aims to evaluateeducation systems worldwide by testing theskills and knowledge of 15-year-oldstudents. To date, students representingmore than 70 economies have participatedin the assessment.What makes PISA different PISA is unique because it develops tests which are not directly linked to the school curriculum. The tests are designed to assess to what extent students at the end of compulsory education, can apply their knowledge to real-life situations and be equipped for full participation in society. The information collected through background questionnaires also providescontext which can help analysts interpretthe results.What the assessment involvesSince the year 2000, every three years, fifteen-year-old students from randomly selected schools worldwide take tests in the key subjects: reading, mathematics and science, with a focus on one subject in each year of assessment. The students take a test that lasts 2 hours. The tests are a mixture of open-ended and multiple-choice questions that are organised in groups based on a passage setting out a real-life situation. A total of about 390 minutes of test items are covered. Students take different combinations of different tests. Additional PISA initiativesPISA-based Test for Schools(PTS)As interest in PISA has grown, school and local educators have been wanting to know how their individual schools compare with students and schools in education systems worldwide. To address this need, the OECD (The Organization for Economic Co-operation and Development)has developed the PISA-based test for schools. It is currently available in the United States and the OECD is in discussions with governments to make the test available in other countries such as England and Spain.70. PISA is different from other programmes because _____________.A. its test is closely related to the school curriculumB. its test aims to assess whether students can solve real-life problemsC. its test can equip students for full participation in schoolD. test scores directly determine the analysis of the test71. Which of the following statements is true according to the passage?A. Test-takers are carefully selected.B. Test-takers answer the same questions.C. Test-takers are tested on three key subjects.D. Test-takers spend about 390 minutes on the test.72. What can we infer from the last paragraph?A. Students of all ages will be able to take PTS in the future.B. More countries are likely to have PTS in the future.C. School and local educators show little interest in PISA at present.D. PISA provides evaluation of education system within a certain country.73. Where can we most probably find the passage?A. On the Internet.B. In a newspaper.C. In a magazine.D. In an advertisement.(C)YANG YUANQING, Lenovo’s boss, hardly spoke a word of English until he was about 40: he grew up in rural poverty and read engineering at university. But when Lenovo bought IBM’s personal-computer division in 2005 he decided to immerse himself in English: he moved his family to North Carolina, hired a language tutor and — the ultimate sacrifice —spent hours watching cable-TV news.Lenovo is one of a growing number of multinationals from the non-Anglophone world that have made English their official language. The fashion began in places with small populations but global ambitions such as Singapore and Switzerland.Corporate English is now invading more difficult territory, such as Japan. Rakuten, a cross between Amazon and eBay, and Fast Retailing, which operates the Uniqlo fashion chain, were among the first to switch. Now they are being joined by old-economy companies such as Honda, a carmaker, and Bridgestone, a tyremaker. Chinese firms are proving harder to handle: they have a huge internal market and are struggling to enrol competent managers of any description, let alone English-speakers. But some are following Lenovo’s lead. Huawei has introduced English as a second language and encourages ambitious employees to become fluent.There are some obvious reasons why multinational companies want a lingua franca(共通语). Adopting English makes it easier to recruit global stars (including board members), reach global markets and assemble global production teams. Such steps are especially important to companies in Japan, where the population is shrinking.Tsedal Neeley of Harvard Business School says that “Englishnisation” can stir up a hornet’s nest of emotions. Ms Neeley argues that companies must think carefully about implementing a policy that touches on so many emotions. Senior managers should explain to employees why switching to English is so important, provide them with classes and conversation groups, and offer them incentives(刺激) to improve their fluency. Those who are already proficient in English should speak more slowly and try not to dominate conversations. And managers must act as referees and enforcers, resolving conflicts and discouraging staff from return to their native tongues.Intergovernmental bodies like the European Union are obliged to pretend that there is no predominant global tongue. But businesses worldwide are facing up to the reality that English is the language on which the sun never sets.74. Lenovo’s boss made all the efforts to familiarize himself with English except ______.A. hiring a language tutorB. resettling in an English-speaking environmentC. expanding the business overseasD. exposing himself to English Cable-TV new75. What can we infer from the passage?A. Most Chinese firms would like to introduce corporate English.B. Chinese firms are in great need of English majors as their managers.C. Huawei followed Lenovo as the second largest multinational in China.D. Adopting corporate English is more difficult in places with a large population.76. Which of the following is true according to the passage?A. The decrease in population pushes the Japanese to learn English well.B. Neither the governmental bodies nor businesses will regard English as a global tongue.C. Companies should handle employees’ emotions carefully during the switch.D. Those good at English should be encouraged to speak more in the company.77. Which of the following might be the best title of the passage?A. English—Global Tongue in BusinessB. English—Chinese Business L eaders’ New FashionC. English—The Best Tool in CommunicationD. English—Dominating Factor of Successful BusinessSection CDirections: Read the passage carefully. Then answer the questions or complete the statements in the fewest possible words.Now many people strive to be a follower of the LOHAS movement. LOHAS means “lifestyles of health and sustainability.” This term was coined in 2000 by two American scholars.Lohasians believe in leading a healthy lifestyle that is actively involved in preserving the earth’s environment and resources. According to Lohasians, respect for one’s own mental and physical health should exist in parallel with care for the earth’s ecology. They believe their actions, in this way, can have a positive effect on our global environment, and might be ab le to minimize the negative effects of people’s mindless and selfish consumption.Take organic foods, for example. Lohasians prefer them, not only because they are chemical-free and good for the human body, but also because they are cultivated using natural fertilizers, which do not harm the soil. Even more Lohansians turn to locally grown produce(农产品), the transportation of which consumes far less fuel than that of imported goods. As global warming has become a universal concern, Lohasians are anxious to find ways to cut down on energy consumption.Indeed, Lohasians are always considering the long-term impact of their behavior on the planet. As more consumers are adopting LOHAS values, this growing trend has dawned on the corporate world and they begin to practice responsible capitalism, which means providing goods and services using environmentally friendly and economically sustainable business practices. For instance, Coca-Cola’s efforts in the area of sustainable packaging focus mainly on “using less” and “reusing more.” In 2006, Coca-Cola redesigned its glass bottle to extend its life cycle and reduce its impact on the environment. As a result, the company saved 89,000 metric tons of glass in 2007 alone, and, therefore, reduced carbon dioxide emissions to a level equivalent to that of the planting of more than 13,000 acres of trees.Clearly, LOHAS values have become a significant trend in the world today. Individual or corporate “cultural creatives” are promoting these values by challenging old traditi ons and habits, and building new lifestyles. Although whether these practices will bring immediate benefits to the environment and the health of people today remains unknown, Lohasians are confident that these practices will benefit their children and future generations. All individuals should evolve into Lohasians and take action to save the planet, before it is too late.(Note: Answer the questions or complete the statements in NO MORE THAN TWELVE WORDS.)78. Lohasians are convinced that through their responsible actions, __________ might be reduced to a minimum.79. Why is locally grown produce favoured by Lohansian?80. Consumers’ growing trend of LOHAS values has inspired companies to __________.81. In terms of their practices, Lohasians are not sure of __________.第II 卷(共47分)I. TranslationDirections: Translate the following sentences into English, using the words given in the brackets.1. 当地村民的善良感动了我们。
浦东新区2013学年度第二学期小学五年级学习质量调研数学试卷
浦东新区2013学年度第二学期小学五年级学习质量调研数学试卷(完卷时间80分钟,满分100分)第一部分1.直接写出得数.(每题1分,共8分)3.4+2.8= 9÷0.6= 1.6×( )= 0.8 1-0.7-0.7×0.1= 1.42÷2.2= (商用循环小数的简便形式表示)估算:2952÷62≈ 1.8×0.34≈ (用“四舍五入法”把得数精确到百分位) 2.解方程.(每题4分,共8分)(1) 1.2+3x =1.8 4(10-x)=3.23.用递等式计算.(每题4分,共16分)(1)5.2×1.7-5.2÷1.3 (2)7.72+(3.85+10.28)+6.15(3)3.6×5.4+3.6×3.6+3.6 (4)[(1.17+8.82)÷0.1]×0.014.列综合算式或方程解.(每题4分,共8分)(1)9.1加上3.9的和除以2.6,商是多少?(2)一个数与3.4的差的3倍等于这个数,这个数是多少?(1)一根电线长5.4米,比另一根电线长0.6米,两根电线共长多少米?(2)今年妈妈的年龄是小巧的3倍,小巧比妈妈小24岁.小巧今年几岁?(3)师徒两人加工同样的零件,徒弟每小时做12个,师傅每小时做18个,徒弟先做了2小时后师傅才开始工作,几小时后师徒两人做的零件数量相等?(4)一群猴子分桃子吃,如果每只猴子吃5个桃子,还剩下24个;如果每只猴子吃7个桃子,正好够吃.这群猴子有几只?一共有多少个桃子?(5)甲、乙两车分别从AB两地同时相向开出,3小时后两车相遇,相遇后甲车再行2.5小时到达B地,已知乙车每小时行60千米,那么甲车每小时行多少千米?(6)求右图组合体的体积.(单位:dm)1.填空题.(每空1分,共20分)(1)0.76m3= dm3, 5t30kg= t.(2)由4个十,3个十分之一,6个千分之一组成的小数是__ __,将这个数精确到0.01,用“去尾法”得到 .(3)把一个数的小数点先向左移动两位,再向右移动三位,结果是3.5,则原数是.(4)数轴上离开原点7个单位长度的数是 .(5)某一个自然数用5n表示,那么紧接在它后面的一个自然数是 .(6)已知甲、乙、丙三个数的平均数为a,甲、乙两个数的平均数为b,那么丙为.(用含有字母的式子表示)(7)化简:17m-1-7m= ,如果m=5.6,那么式子的结果是。
浦东新区学年度第二学期期末预备年级数学试卷及答案
A B OA O BB O AB O A浦东新区2013学年度第二学期期末质量测试六 年 级(预备年级)数 学(完卷时间:90分钟 满分:100分) 2014.6一、 选择题(本大题共6题,每小题3分,满分18分)(每题只有一个选项正确) 1.在数轴上点A 、点B 所表示的数分别是a 、b ,那么能够判断b a <的是…………( )(A ); (B ); (C ); (D ).2.下面的变形正确的是…………………………………………………………………( ) (A )由137=-x ,得713-=x ; (B )由845+=x x ,得845=+x x ;(C )由121=x ,得21=x ; (D )由2372+=-x x ,得7232+=-x x .3.某商场促销,小鱼将促销信息告诉了妈妈,小鱼妈妈假设某一商品的定价为x ,并列出不等式为()100010027.0<-⨯x ,那么小鱼告诉妈妈的信息是……………………( )(A )买两件等值的商品可减100元,再打3折,最后不到1000元;(B )买两件等值的商品可打3折,再减100元,最后不到1000元; (C )买两件等值的商品可减100元,再打7折,最后不到1000元; (D )买两件等值的商品可打7折,再减100元,最后不到1000元.4.小明某天记录的支出如图所示,不小心饼干的支出金额被墨水污染了,如果小明原来有30元,每包饼干的售价为1.3元,那么小明剩下的钱数不可能是……………………………( )题 号 一 二 三 四 五 总 分 得 分项目 支出金额(元)早餐 4 午餐 7 晚餐 15 饼干(A )0.1元; (B )0.8元; (C )1.4元; (D )2.7元.5.下列说法中,正确的是……………………………………………………………………( ) (A )联结两点的线段叫做两点之间的距离;(B )用度量法和叠合法都可以比较两个角的大小;(C )六个面、十二条棱和八个顶点组成的图形都是长方体; (D )空间两条直线间的位置关系只有相交和平行两种. 6.只利用一副(两块)三角尺不能直接拼出的角度是…………………………………( )(A )75°;(B )105°;(C )150°;(D )165°.二、 填空题(本大题共12题,每小题2分,满分24分)7.52-的相反数是 .8.计算:()835.3-- . 9.每年5月18日是国际博物馆日,2014年5月18日上海中国航海博物馆一上午参观者达9 000人,全天超过16 000人,将16 000用科学记数法表示为 . 10.当0<a ,b 0时,0<ab .(填“>”“<”或“=”) 11.二元一次方程1525=+y x 的正整数解是 .12.a 、b 表示两个有理数,规定新运算“*”为:a *b =b ma 2+(其中 m 为有理数),如果1*2=5,那么m 的值为 .13.在线段AB 延长线上顺次截取BC =CD =2AB ,如果AB =2,那么AD = . 14.如图,OP 、OQ 分别是∠AOB 、∠BOC 的平分线,如果∠POQ =52°26′,那么∠AOC = (结果用度、分、秒表示).15.一个角的补角一定比它的余角大 度. 16.在长方体ABCD -EFGH 中,与平面ABCD 和平面ABFE都平行的棱是 .AB C D EFGH (第16、17题图)(第14题图)QPCB OA17.在长方体ABCD -EFGH 中,既与平面ADHE 垂直,又与平面EFGH 平行的平面是 .18.如果一根铁丝可以折成长6分米,宽4分米,高2分米的长方体框架模型,那么用这根铁丝折成一个正方体框架模型,它的棱长是 分米.三、 简答题(本大题共6题,每小题6分,满分36分)19.计算:()⎪⎭⎫ ⎝⎛-÷-+-⨯⎪⎭⎫ ⎝⎛-3131337972.解:20.解方程:12135x x +--=.解:21.解不等式:x 15≥()246233--x ,并把它的解集在数轴上表示出来. 解:22.解不等式组:⎪⎩⎪⎨⎧->+>.,-31221302x x x解:① ②23.解方程组:⎩⎨⎧=-+=--.,0243053y x y x解: 24.解方程组:⎪⎩⎪⎨⎧=++=-+=+-.,,223243223z y x z y x z y x 解:四、作图题(本大题6分)25.线段AB 与射线AP 有一公共端点A .(1) 用直尺和圆规作出线段AB 的中点M ;(不写作图方法) (2) 用直尺和圆规作出以点B 为顶点的∠ABQ ,使∠ABQ =∠P AB ,且BQ 与AP 相交于点C .(不写作图方法) (3) 联结CM ,用量角器测量∠AMC 和∠BMC 的度数,你认为∠AMC 和∠BMC 的大小关系如何?①②PBA第25题①②③五、解答题(本大题共2题,26题7分,27题9分,满分16分)26.学校“六一节”活动,设计了一个飞镖游戏,飞镖游戏的规则如下:如图,掷到A区和B 区的得分不同,A区为小圆内部分,B区为大圆内小圆外部分(A区、B区均不含边界,如果掷到边界上重新投掷,投掷在大圆以外的无效).现在将投掷有效的每次位置用一个点标注,统计出小红,小华和小明的有效成绩情况如下:如果小红得了65分,小华得了71分,求:(1)掷中A区、B区一次各得多少分?(2)按照这样的记分方法,小明得了多少分?解:27.小红,小华和小明准备用透明胶和66张大小相同的正方形硬纸板制作一些长方体纸盒,如图1,三人分别将正方形硬纸板按各自方案裁剪,然后各取两张制作成一个长方体纸盒,现在需要你的帮忙:(1)制作前,要画出长方体纸盒的直观图,小明只画了一部分(如图2),请你帮他画完整(不写画法);(2)如果按照设计的方案全部用完可以做成几个完整的长方体纸盒?(3)制作过程中,小明少裁剪了几张正方形硬纸板,这几张正方形硬纸板由小红和小华分别按各自的方案裁剪完,裁剪出的长方形硬纸板正好可以全部做成与(2)大小相同的无盖盒子,请问小明少裁剪了几张硬纸板?解:小明小华小红(第27题图1)(第27题图2)浦东新区2013学年度第二学期期末质量测试 六年级(预备年级)数学参考答案及评分说明一、选择题(本大题共6题,每小题3分,满分18分)(每题只有一个选项正确) 1.B ; 2.D ; 3.C ; 4.B ; 5.B ; 6.D .二、填空题(本大题共12题,每小题2分,满分24分)7.52; 8.831-; 9.4106.1⨯; 10.>; 11.⎩⎨⎧==.5,1y x 12.1;13.10; 14.104°52′; 15.90; 16.HG ; 17.ABCD ; 18.4.三、简答题(本大题共6题,每小题6分,满分36分)19.解:原式=()331992197-⨯+⨯⎪⎭⎫⎝⎛-.…………………………………………………(3分)=3319914⨯-⨯-. =114--.……………………………………………………………………(2分)=15-.…………………………………………………………………………(1分)20.解:()()152315=--+x x .…………………………………………………………(2分)156355=+-+x x .…………………………………………………………(2分)42=x .2=x .……………………………………………………………(2分)∴原方程的解为2=x .21.解:x 15≥481233+-x .……………………………………………………………(2分) x 27≥81.x ≥3.…………………………………………………………………………(2分)所以,这个不等式的解集在数轴上表示为:……………………………………(2分)22.解:由①,得 2<x .…………………………………………………………………(2分)由②,得 ()()122133->+x x .2439->+x x .55->x .1->x .………………………………………………………(3分) 所以,原不等式组的解集是21<<-x .………………………………………(1分)23.解:由①,得 53+=y x . …………………………………………………(1分)把③代入由②,得 024159=-++y y . 1313-=y .1-=y .…………………………………(2分) 把1-=y 代入③,得 2=x .……………………………………………………(2分)所以,原方程组的解是⎩⎨⎧-==.,12y x …………………………………………………(1分)24.解:由①+③,得 2433=+z x .8=+z x . ④………………………………………………(1分)由①+②×3,得 1410=-z x . ⑤…………………………………………(1分) 由④+⑤,得 2211=x .2=x .………………………………………………………(1分) 把2=x 代入④,得 6=z .……………………………………………………(1分) 把2=x ,6=z 代入②,得 4=y .……………………………………………(1分)所以,原方程组的解是⎪⎩⎪⎨⎧===.,,642z y x …………………………………………………(1分)四、作图题(本大题6分) 25.(1)作图略.……………………………………………………………………………(2分) (2)作图略.……………………………………………………………………………(2分)(3)∠AMC =∠BMC = 90.……………………………………………………………(2分)③五、解答题(本大题共2题,26题7分,27题9分,满分16分) 26.解:(1)设掷中A 区得x 分,掷中B 区y 分.根据题意,得方程组⎩⎨⎧=+=+.,71356553y x y x ………………………………………………………………(2分)解这个方程组,得⎩⎨⎧==.,710y x …………………………………………………(2分)答:掷中A 区得10分,掷中B 区7分.(2)小明得分为:6276102=⨯+⨯(分).…………………………………(3分) 答:按照这样的记分方法,小明得了62分.27.解:(1)图略.…………………………………………………………………………(2分) (2)设可以做成x 个完整的长方体纸盒.根据题意,得方程66332=++xx x .……………………………………………………………(2分) 解这个方程,得33=x .……………………………………………………(1分) 答:可以做成33个完整的长方体纸盒.(3)设可以做成y 个完整的长方体纸盒.根据题意,得方程66632=++y y y .……………………………………………………………(2分)解这个方程,得36=y .……………………………………………………(1分)小明少裁剪的硬纸板数是5336333=-(张).……………………………(1分) 答:小明少裁剪了5张硬纸板. (注:其他做法请相应给分)。
浦东新区2013学年度高二第二学期期末质量测试
浦东新区2013学年度第二学期期末质量测试高二数学(答题时间:90分钟 试卷满分:100分)一、填空题(本大题满分36分)本大题共有12题,只要求直接填写结果,每个空格填对得3分,否则一律得零分.1.已知()2,2A 、()1,1--B ,则直线AB 的倾斜角为___________. 2.已知i 为虚数单位,则10(1)i +=___________.3.若复数满足iz i = (i 为虚数单位),则||z = .4.以椭圆221169144x y +=的右焦点为圆心,半径为4的圆的方程是__________________. 5.经过点(3,4)P 且与圆2225x y +=相切的直线方程是 .6.关于x 的方程042=++k x x 有一个根为i 32+- (i 为虚数单位) ,则实数k =_________. 7.已知点)2,3(A ,F 是抛物线x y 22=的焦点,点P 在抛物线上移动,为使PF AP +有最小值,P 点坐标应为_________________.8.椭圆19222=+k y x 与双曲线1322=-y k x 的焦点相同,则k = . 9.已知P 是抛物线x y 42=上的动点,F 是抛物线的焦点,则线段PF 的中点轨迹方程是 .10.已知复数z 满足342z i --=(i 为虚数单位),则z 的取值范围是________. 11.设1z 、2z 、C z ∈,下列命题中(1) 若021>-z z ,则21z z >;(2) 复数等式2=-++i z i z 在复平面上表示椭圆(i 为虚数单位) ;(3) 若02221=+z z ,则021==z z ; (4)若22z z =,则z 必为实数 ;(5) 当0≠z 时,01≠+zz . 其中为真命题的序号为 .12.已知椭圆方程:1162522=+y x ,左焦点为F ,一条直线m x =与椭圆交于两点B A 、,当ABF ∆的周长为最大时,ABF ∆面积是___________.二、选择题(本大题满分12分)本大题共有4题,每题都给出代号为A 、B 、C 、D 的四个结论,其中有且只有一个结论是正确的,每题答对得3分,否则一律得零分.13.直线022=-+y x 与310x y -+=的夹角为………………………………………( )A .4π B . 2π C . 4π- D . 4π或34π14.若m 为实数,则复数()()i m m m m 1122-+-+++(i 为虚数单位)在复平面内所对应的点位于………………………………………………………………………………… ( )A .第一象限B .第二象限C .第三象限D .第四象限15.已知()0,5-A 、()0,5B两点,且满足a PB PA 2=-,当常数05a <≤时,点P 的轨迹为…………………………………………………………………………………… ( ) A .双曲线或一条直线 B .双曲线一支或一条射线 C .双曲线一支或一条直线 D .双曲线或两条射线 16.直线l 过点(4,0)-且与圆22(1)(2)25x y ++-=交于A B 、两点,如果||8AB =,那么直线l 的方程为…………………………………………………………………………( ) A .512200x y ++= B .512200x y -+=或40x += C .512200x y -+=D .512200x y ++=或40x +=三、解答题(本大题满分52分)本大题共有5题,解答下列各题必须写出必要的步骤. 17.(本题满分8分)已知复数13z i =-(i 为虚数单位),复数2z 的虚部为2,且21z z 是实数,求复数2z .18.(本题满分8分)已知直线l 的斜率为43,且与坐标轴所围成的三角形的周长是12,求直线l 的方程.19. (本题满分10分,第1小题4分,第2小题6分)已知动圆过点()0,1P ,且与定直线1:-=x l 相切. (1) 求动圆圆心M 的轨迹方程;(2) 若直线1)y x =-与曲线M 相交于A 、B 两点,点C 在定直线:1l x =-上,若以线段AB 为直径的圆经过点C ,求点C 的坐标.20.(本题满分12分,第1小题4分,第2小题8分)已知椭圆2222:1x y C a b+= (0>>b a )的一个焦点坐标为(1,0),且长轴长是短轴长的2倍.(1) 求椭圆C 的方程;(2) 设O 为坐标原点,椭圆C 与直线1y kx =+相交于两个不同的点A 、B ,线段AB 的中点为P ,若直线OP 的斜率为1-,求△OAB 的面积.21. (本题满分14分,第1小题7分,第2小题7分)已知双曲线14:22=-y x C ,P 为C 上的任意点. (1)若直线1+=kx y 与双曲线14:22=-y x C 有且仅有一个公共点,求实数k 的值; (2)设点A 的坐标为()0,t (t 为正实数),求PA 的最小值.浦东新区2013学年度第二学期期末质量测试高二数学(答题时间:90分钟 试卷满分:100分)一、填空题(本大题满分36分)本大题共有12题,只要求直接填写结果,每个空格填对得3分,否则一律得零分.1.已知()2,2A 、()1,1--B ,则直线AB 的倾斜角为_4π_. 2.已知i 为虚数单位,则10(1)i +=_32i _.3.若复数满足iz i = (i 为虚数单位),则||z 2 .4.以椭圆221169144x y +=的右焦点为圆心,半径为4的圆的方程是_()16522=+-y x _. 5.经过点(3,4)P 且与圆2225x y +=相切的直线方程是 02543=-+y x .6.关于x 的方程042=++k x x 有一个根为i 32+- (i 为虚数单位) ,则实数k =_13_. 7.已知点)2,3(A ,F 是抛物线x y 22=的焦点,点P 在抛物线上移动,为使PF AP +有最小值,P 点坐标应为_)2,2(_.8.椭圆19222=+k y x 与双曲线1322=-y k x 的焦点相同,则k = 2 .9.已知P 是抛物线x y 42=上的动点,F 是抛物线的焦点,则线段PF 的中点轨迹方程是122-=x y .10.已知复数z 满足342z i --=(i 为虚数单位),则z 的取值范围是_[]7,3_. 11.设1z 、2z 、C z ∈,下列命题中(1) 若021>-z z ,则21z z >;(2) 复数等式2=-++i z i z 在复平面上表示椭圆(i 为虚数单位) ;(3) 若02221=+z z ,则021==z z ; (4)若22z z =,则z 必为实数 ;(5) 当0≠z 时,01≠+zz . 其中为真命题的序号为 (4) .12.已知椭圆方程:1162522=+y x ,左焦点为F ,一条直线m x =与椭圆交于两点B A 、,当ABF ∆的周长为最大时,ABF ∆面积是_596_.二、选择题(本大题满分12分)本大题共有4题,每题都给出代号为A 、B 、C 、D 的四个结论,其中有且只有一个结论是正确的,每题答对得3分,否则一律得零分.13.直线022=-+y x 与310x y -+=的夹角为………………………………………( A )A .4π B . 2π C . 4π- D . 4π或34π14.若m 为实数,则复数()()i m m m m 1122-+-+++(i 为虚数单位)在复平面内所对应的点位于………………………………………………………………………………… ( D )A .第一象限B .第二象限C .第三象限D .第四象限15.已知()0,5-A 、()0,5B两点,且满足a PB PA 2=-,当常数05a <≤时,点P 的轨迹为…………………………………………………………………………………… ( B ) A .双曲线或一条直线 B .双曲线一支或一条射线 C .双曲线一支或一条直线 D .双曲线或两条射线16.直线l 过点(4,0)-且与圆22(1)(2)25x y ++-=交于A B 、两点,如果||8AB =,那么直线l 的方程为…………………………………………………………………………( D ) A .512200x y ++= B .512200x y -+=或40x += C .512200x y -+=D .512200x y ++=或40x +=三、解答题(本大题满分52分)本大题共有5题,解答下列各题必须写出必要的步骤. 17.(本题满分8分)已知复数13z i =-(i 为虚数单位),复数2z 的虚部为2,且21z z 是实数,求复数2z . 解:设()R a i a z ∈+=22,又由题意()()()()R i a a i i a z z ∈-++=-+=6233221…………(4分) 得,06=-a ,即6=a .…………………………………………(3分)所以,复数i z 262+=.……………………………………………(1分) 18.(本题满分8分)已知直线l 的斜率为43,且与坐标轴所围成的三角形的周长是12,求直线l 的方程. 解:设所求直线l 的方程为b x y +=43,……………………………………(1分)令0=x ,得b y =;令0=y ,得b x 34-=.由题意得:12343422=⎪⎭⎫ ⎝⎛-++-+b b b b …………………………(4分)即123534=+-+b b b ,3±=∴b .…………………………………(2分) 所以直线l 的方程为:343±=x y ,即01243=±-y x .…………(1分)19. (本题满分10分,第1小题4分,第2小题6分)已知动圆过点()0,1P ,且与定直线1:-=x l 相切. (1) 求动圆圆心M 的轨迹方程;(2)若直线1)y x =-与曲线M 相交于A 、B 两点,点C 在定直线:1l x =-上,若以线段AB 为直径的圆经过点C ,求点C 的坐标.解:(1)由题意知,动圆圆心M 到定点()0,1P 与到定直线1:-=x l 的距离相等,所以动圆圆心M 的轨迹方程为x y 42=.…………………………………………(4分) (2)将直线()13--=x y ,代入抛物线方程得031032=+-x x ,解得:3,3121==x x ,…………………………(2分) 所以 ⎪⎪⎭⎫⎝⎛332,31A ,()32,3-B .……………………………………(1分)设()0,1y C -,由题意知,BC AC ⊥⇒0=⋅BC AC ,得()03233243400=--⎪⎪⎭⎫ ⎝⎛-+⨯y y ,解得:3320-=y , 所以点C 的坐标为⎪⎪⎭⎫⎝⎛--332,1.………………………………………(3分)20.(本题满分12分,第1小题4分,第2小题8分) 已知椭圆2222:1x y C a b+= (0>>b a )的一个焦点坐标为(1,0),且长轴长是短轴长的2倍.(1) 求椭圆C 的方程;(2) 设O 为坐标原点,椭圆C 与直线1y kx =+相交于两个不同的点A 、B ,线段AB 的中点为P ,若直线OP 的斜率为1-,求△OAB 的面积.解:(1)由题意得1,c a ==,又221a b -=,所以21b =,22a =. 所以椭圆的方程为 1222=+y x .…………………………………………(4分) (2)设(0,1)A ,11(,)B x y ,00(,)P x y ,联立2222,1x y y kx ⎧+=⎨=+⎩ 消去y 得22(12)40k x kx ++= (*) …………(3分) 解得0x =或2412k x k =-+,所以12412k x k =-+, 所以222412(,)1212k k B k k--++,2221(,)1212k P k k -++, 因为直线OP 的斜率为1-,所以112k -=-, 解得12k =(满足(*)式判别式大于零). ……………………………(3分)O 到直线1:12l y x =+AB =所以△OAB 的面积为1223= ……………………………(2分)21. (本题满分14分,第1小题7分,第2小题7分) 已知双曲线14:22=-y x C ,P 为C 上的任意点. (1)若直线1+=kx y 与双曲线14:22=-y x C 有且仅有一个公共点,求实数k 的值; (2)设点A 的坐标为()0,t (t 为正实数),求PA 的最小值.解:(1)将直线1+=kx y 代入双曲线14:22=-y x C 得, 22(14)880k x kx ---=,…………………………………………………(2分)① 当2140k -=时,即21±=k ,直线与渐近线平行,满足条件;……(2分) ② 当2140k -≠时,226432(14)0k k ∆=+-=,解得2k =±……(2分) 所以实数k 的值为12±、 …………………………………………(1分) (2)设的坐标为()y x P ,,则()()1422222-+-=+-=x t x y t x PA 151544522-+⎪⎭⎫ ⎝⎛-=t t x )2(≥x ……(2分) ① 当2540≤<t ,即250≤<t 时,当2=x 时,2PA 的最小值为()22-t , ② 当254>t ,即25>t 时,当t x 54=时,2PA 的最小值为1512-t . 即⎪⎪⎩⎪⎪⎨⎧⎪⎭⎫ ⎝⎛>-⎪⎭⎫ ⎝⎛≤<-=2515125022min t t t t PA .……………………………………………(5分)。
上海市浦东新区2012-2013学年高二数学下学期期末考试试题沪教版
浦东新区2012学年度第二学期期末质量抽测高二数学试卷答案及评分细则一、填空题(本大题共12道题目,满分36分.只要求直接填写结果,每个空格填对得3分,否则一律得零分)1.若圆心为(1,0)C 且过点(4,4)B ,则该圆的方程是____________【答案】22(1)25x y -+=2. 在复数集中,方程2230x x ++=的解是______.【答案】12x i =-± 3.若直线31y x =-与直线20mx y -+=垂直,则m =____ 【答案】13-. 4.双曲线过点(1,1),其渐近线方程是2y x =±,此双曲线的方程是_________【答案】2221x y -=5.已知点(6,4)A ,F 为抛物线24y x =的焦点.若点P 在抛物线上运动,则PA PF +的最小值是 【答案】76.若复数z 满足53=+i z (i 是虚数单位),则4+z 的最大值= 【答案】107.已知两条直线1:l y x =、2:0(R)l ax y a -=∈,当两直线夹角在0,12π⎛⎫ ⎪⎝⎭变动时,则a 的取值范围为 【答案】()31133⎛⎫ ⎪ ⎪⎝⎭,, 8. 直线2y x =-与抛物线22y x =相交于A 、B 两点,O 为坐标原点,则OA OB ⋅=_____.【答案】0 9.已知12F F 、分别为双曲线2221(0)2x y a a -=>的左右焦点,过2F 作垂直于x 轴的直线,交双曲线与A B 、两点,若1F AB 是等边三角形,则此双曲线的渐近线方程是_______.【答案】2y x =±10.右图是抛物线形拱桥,当水面在l 时,拱顶离水面2米,水面宽4米,水位下降1米后,水面宽 米.【答案】62.11.若直线)(1R a ax y ∈-=与焦点在x 轴上的椭圆2215x y m+=总有公共点,则m 的取值范围是 .【答案】[15), 12.等轴双曲线C 的中心在原点,焦点在x 轴上,C 与抛物线x y 162=的准线交于,A B 两点,43AB =,则C 的实轴长为_______【答案】4二、选择题(本大题共4道题目,每题3分,满分12分)本大题共有4题,每题都给出代号为A 、B 、C 、D 的四个结论,其中有且只有一个结论是正确的.13.若过(2,)P m -、(,4)Q m 两点的直线的斜率为1,则m 的值是( A )A .1B .4C .1或3D .1或414. 如果复数i 21+是关于x 的实系数方程02=++c bx x 的一个复数根,则( D )A .3,2==c bB .1,2-==c bC .1,2-=-=c bD .3,2=-=c b15.对于常数m 、n ,“0mn >”是“方程221mx ny +=的曲线是椭圆”的( B )A.充分不必要条件B.必要不充分条件C.充分必要条件D.既不充分也不必要条件 16. 过定点(1,2)作两直线与圆2222150x y kx y k ++++-=相切,则k 的取值范围是( D )A .2k >B .32k -<<C .3k -<或2k > D.83323⎛⎫⎛⎫- ⎪ ⎪ ⎪ ⎪⎝⎭⎝⎭,三、解答题(本大题满分52分)本大题共有5题,解答下列各题必须写出必要的步骤.17.(本题满分8分)动直线10kx y -+=与圆221x y +=相交于A 、B 两点,求弦AB 的中点的轨迹方程.【解答】动直线10kx y -+=经过定点(0,1),而点(0,1)在圆221x y +=上,设为点A ,即A(0,1). 设弦AB 的中点坐标为x y (,),则点B 的坐标为(2,2-1)x y ,……………………………2分 把B 点代入圆方程:22(2)(2-1)1x y +=……………………………………………………4分 化简,得220x y y +-=………………………………………………………………………6分 所以弦AB 的中点的轨迹方程为220x y y +-=(圆221x y+=内部分。
小学五年级英语下学期5B英语调研试卷(含答案及评分标准最终稿).doc
浦东新区2013学年度第二学期小学五年级学习质量调研英语试卷(完卷时间:60分钟满分:100分)注:请将所有答案写在答题纸上Part 1 Listening(听力部分)30%Ⅰ. Listen and choose(听录音,选出听到的内容,将字母代号写在答题纸上):10%1. A. /jes/ B. /ges/ C. /mes/2. A. /peə / B. /pʊə / C. /p Iə/3. A. /wet/ B. /we I t/ C. /wa I t/4. A. fruit B. food C. foot5. A. grow B. glue C. crow6. A. 9:50 B. 9:10 C. 8:507. A. an interesting insect B. an interesting story C. an interesting film8. A. do everything loudly B. do everything quietly C. do everything quickly9. A. There is a short break after each class.B. There is a short break before each class.C. Is there a short break after each class?10. A. Whose picture book is this? It’s his.B. Whose picture book is this? It’s hers.C. Whose story book is this? It’s hers.Ⅱ. Listen and choose(听问句,选答句;听答句,选问句,将字母代号写在答题纸上):5%1. A. That’s a good idea. B. Not at all. C. Here we are.2. A. They’re theirs. B. It’s theirs. C. Yes, it’s theirs.3. A. Yes, I did. B. Yes, I do. C. Yes, I have.4. A. What is your favourite fruit? B. What is your favourite vegetable?C. What is your favourite film?5. A. What do healthy children often eat? B. What do healthy children often do?C. What do unhealthy children often do?Ⅲ. Listen and choose(听录音,根据问题选择正确的答案,将字母代号写在答题纸上):5%1. A. Some bread and milk. B. A sandwich and some juice.C. A cake and some juice.2. A. No, his are blue. B. Yes, they are. C. They’re Jill’s.3. A. He did his homework. B. He enjoyed the quiet music.C. He watched TV.4. A. 45 yuan. B. 60 yuan. C. 75 yuan.5. A. At 8:20. B. At 8:30. C. On Friday afternoon. Ⅳ. Listen and fill in the blanks(听录音,填入所缺单词完成短文,每线一词,将答案写在答题纸上):5%Hello, I’m Tom. I like 1 films very much. I often go to Star Cinema 2 my friend Tony at weekends. The 3 there are very comfortable(舒适的). Last Saturday, I wanted to see the film Little Rat Cook. But Tony wanted to see 4 film. At last we saw the film Rabbit Run. It was 5 . We had a good time.Ⅴ. Listen and choose(听录音,选择最佳答案,将字母代号写在答题纸上):5%1. Jack and Bob share ____________.A. the socksB. a bedC. a bedroom2. Bob always _____________.A. keeps all his things tidyB. leaves his things everywhereC. cleans his bedroom3. ___________socks are red.A. J ack’sB. B ob’sC. B ob and Jack’s4. Where are the black and white socks?___________A. On the chair.B. Under the bed.C. On the bed.5. __________ helps __________. They’re good brothers.A. Mum... BobB. Bob… JackC. Jack… BobPart 2 Vocabulary and Grammar(词汇与语法部分)48%Ⅰ. Copy the sentences(正确抄写下列句子,注意大小写和标点符号,将答案写在答题纸上):5%can i have two tickets for toy story please sureⅡ. Look and write(根据图意,写出合适的单词完成句子,每线一词,首字母已给,将答案写在答题纸上):8%1. 2. 3. 4. 5. 6.入口1. Please wait for me at the e___________.2. Are these c___________ Kitty’s? Yes.3. M___________ is Peter’s favourite s___________.4. Ben and Kitty s___________ on the sofa and watched a cartoon yesterday.5. They were p___________. Now they are dogs.6. An apple a day k___________ the doctor a___________.Ⅲ. Read and complete(读一读,选词填空完成句子,将答案写在答题纸上):6%next time at all English class too much a lot of lay eggs1. We can learn new words in ________________. Wow, so nice!2. The drill is too loud. Kitty didn’t like it ________________.3. Please don’t watch ________________ TV. It’s not good for your eyes.4. Look at the moths. They can_______________ on a leaf.5. --- I’m too tired. Shall we play games________________, dear? --- OK, Mum.6. They went to the Ocean World last week. There were ________________ lovely fishes in it.Ⅳ. Choose the best answer(选择最恰当的答案,将字母代号写在答题纸上):12%1. --- “Boom… Boom…”What’s that noise? --- It’s __________.A. a lorryB. a drillC. a drum2. --- Shall we __________ on the Internet? --- Great.A. chatB. chattingC. chats3. --- Ben, is this ________ schoolbag? --- No, __________ is in the desk.A. your… myB. yours…mineC. your… mine4. --- Can you make a __________ sound? --- Of course, I can shout __________.A. loud… loudlyB. loudly… loudC. loudly…loudly5. It’s 11:30. It’s time _________ lunch. Let’s go __________ the canteen.A. to… toB. for…toC. of…into6. These children eat too many___________ every day. They aren’t healthy.A. vegetableB. sweetsC. sweet food7. --- Would you like __________ green tea, Grandpa? --- Thank you. You’re a good boy.A. someB. anyC. a8. Once he __________ a little baby. Now he __________ a big boy.A. is…isB. is… wasC. was… is9. Do you know how the insect grows? Which one is correct(正确的)?A. eg g →cocoon →caterpillar →butterflyB. egg →silkworm →cocoon →butterflyC. egg →silkworm →cocoon →moth10. --- Where is the supermarket, Mum? --- __________ Look! It’s on our right.A. Here we are.B. Here you are.C. Here they are.11. --- __________ --- Once a month.A. How do you go to the library?B. How often do you go to the library?C. When do you go to the library?12. --- __________ --- You should wear warm clothes.A. Do you wear warm clothes?B. What should I do?C. Should I wear warm clothes?Ⅴ. Rewrite the sentences(按要求改写下列句子,每线一词,将答案写在答题纸上):10%1. There is some beef in the fridge. (改成一般疑问句)__________ there ___________ beef in the fridge?2. Please put the brushes on the shelf. (改成否定句)__________ __________ put the brushes on the shelf.3. The children are at City Square now. (用yesterday替换now,其余部分作相应调整)The ___________ __________ at City Square yesterday.4. These are Danny’s notebooks. (根据划线部分提问)__________ notebooks are __________?5. I had some rice and meat for lunch. (根据划线部分提问)What __________ you __________ for lunch?Ⅵ. Read and write(读一读,用适当的单词填空,使句子完整,每线一词,将答案写在答题纸上):7%1. The students can sing and dance in this class. Most students like it. It’s a _________ class.2. Snow White is a film about a beautiful _________ and seven dwarfs.3. I like carrots and _________ very much. They are my favourite vegetables.4. Jim likes _________ some exercise all day and all night. So he runs quickly into the hole.5. Yesterday Linda _________ a loud noise in the garden. She was afraid.6. The young man lives in Shanghai. He often rides a bike or a _________ to work.7. There is an egg in the nest. Please guess... It may become a _________.Part 3 Reading and Writing(阅读与写话部分)22%Ⅰ. Read and choose(选择适当的句子完成对话,每句限用一次,将字母代号写在答题纸上):5%It’s lunch time. The children are having lunch together.Jane: I’m having chicken and cabbages. 1Danny: I’m having pork, eggs and my favourite beef. Oh, carrots…Peter: What’s wrong, Danny? 2Danny: No, I don’t like vegetables. I hate(讨厌)carrots. I like meat.Jane: You can’t eat too much meat. 3Peter: Jane is right. You should eat a healthy meal.Danny: 4Peter: Eat more vegetables and fruit and eat less meat.Danny: Oh, I see. 5Peter: So, your pork and beef are mine now!Danny: Hey, you!Ⅱ. Reading comprehension(阅读理解):11%A. Read and judge(阅读短文,判断正误,用T或F表示,将答案写在答题纸上):6%Mary is a beautiful girl. She has a pet—a blue bird. Its name is Gigi. One day she saw the bird standing on a small box. It was very sad. Mary asked her mother why. Her mother said, ‘I think it has no friends to play with. We can find some friends for it.’ ‘But where can we find it some friends?’ ‘I have an idea,’ said Mother. Then they found some corn and much rice in the kitchen and put them outside near the bird. Soon many hungry birds came. Gigi saw many birds here and there. It was happy. Mary and her mother were happy too.(注:划线单词为动词的过去式see—saw ask—asked say—said find—found come—came)1. Mary’s pet is a black bird.2. Mary and Gigi were together but Gigi was unhappy.3. The bird was on a small box.4. Mary’s mother put some corn and rice in the kitchen.5. There were many hungry birds eating around Gigi.6. Finally, Gigi played with many birds happily.B. Read and answer(阅读短文,正确回答下列问题,将答案写在答题纸上):5%I don’t need my earsMin is a cat. One day, Min is tired and he wants to sleep in the house.He can hear an aeroplane flying in the sky. “Woof, woof.” Here comes a dog. Dogs and cats are not friends. The dog do esn’t like Min and runs away.Min can’t hear the dog. But he can hear the cars and a boat. They are very no isy. They nearly make him crazy(疯狂). He looks very sad because he wants to sleep.‘Ring! Ring! ’ A telephone. ‘Ting! Ting! ’A bicycle. ‘Beep! Beep! ’ A car.‘Oh, my god! ’ Min becomes very angry and he shouts, ‘I don’t like noises! Who can give me quiet environment(环境)! I don’t need my ears! ’1. Why does Min want to sleep?2. Is there an aeroplane flying in the sky?3. Is it quiet or noisy outside?4. Does Min like the noises?5. How does Min feel in the end?Ⅲ. Think and write (同学们,校园生活丰富多彩!请选择其中的一天,以My school life为题,写写你最喜欢的课程、活动等,并说说喜欢的理由。
上海市浦东新区2013学年度小五(下)期末学习质量调研卷(统考卷)
浦东新区2013学年度第二学期小学五年级学习质量调研英语试卷(完卷时间:60分钟满分:100分)注:请将所有答案写在答题纸上Part l Listening(听力部分)30%I.Listen and choose(听录音,选出听到的内容,将字母代号写在答题纸上):10%1.A./jes/ B./ges/ C./mes/2.A. /pea/B./pua/C./pia/3.A. /wet/ B./wert/ C./wait/4.A.fruit B.food C.foot5.A.grow B.glue C.crow6.A.9:50 B.9:10 C.8:507.A. an interesting insect B.an interesting story C.an interesting film8.A. do everything loudly B.do everything quietly C.do everything quickly9.A. There is a short break after each class.B. There is a short break before each class.C. Is there a short break after each class?10.A.Whose picture book is this? It's his.B. Whose picture book is this? It's hers.C. Whose story book is this? It's hers.Ⅱ.Listen and choose(听问句,选答句;听答句,选问句,将字母代号写在答题纸上):5%1.A. That's a good idea. B. Not at all. C. Here we are.2.A. They're theirs. B. It's theirs. C. Yes, it's theirs.3.A. Yes, I did. B. Yes, I do. C. Yes, I have.4.A. What is your favourite fruit? B. What is your favourite vegetable?C. What is your favourite film?5.A. What do healthy children often eat? B. What do healthy children often do?C. What do unhealthy children often do?Ⅲ.Listen and choose(听录音,根据问题选择正确的答案,将字母代号写在答题纸上):5%1.A. Some bread and milk. B.A sandwich and some juice. C.A cake and some juice.2.A. No, his are blue. B. Yes, they are. C. They're Jill's.3.A. He did his homework. B. He enjoyed the quiet music. C.He watched TV4.A. 45 yuan. B. 60 yuan. C. 75 yuan.5.A. At 8:20. B. At 8:30. C. On Friday afternoon.Ⅳ.Listen and fill in the blanks(听录音,填入所缺单词完成短文,每线一词,将答案写在答题纸上):5%Hello, I'm Tom. I like 1 films very much. I often go to Star Cinema 2 my friend Tony at weekends. The 3 there are very comfortable(舒适的).Last Saturday, I wanted to see the film Little Rat Cook. But Tony wanted to see__4__film. At last we saw the film Rabbit Run. It was 5 .We had a good time.V. Listen and choose<听录音,选择最佳答案,将字母代号写在答题纸上):5%1. Jack and Bob share ___.A. the socksB. a bedC. a bedroom2. Bob always ____.A. keeps all his things tidyB. leaves his things everywhereC. cleans his bedroom3. ___socks are red.A. Jack'sB. Bob'sC. Bob and Jack's4. Where are the black and white socks?A. On the chair.B. Under the bed.C. On the bed.5.__ helps___ . They're good brothers.A. Mum... BobB. Bob... JackC. Jack... BobPart 2 Vocabulary and Grammar(词汇与语法部分)48%I.Copy the sentences(正确抄写下列句子,注意大小写和标点符号,将答案写在答题纸上):5%can i have two tickets for toy story please sureⅡ.Look and write(根据图意,写出合适的单词完成句子,每线—词,首字母已给,将答案写在答题纸上):8% 1. Please wait for me at the e 2. Are these c Kitty's? Yes. 3. M is Peter's favourite s 4. Ben and Kitty s_ on the sofa and watched a cartoon yesterday. 5. They were p_ . Now they are dogs. 6. An apple a day k the doctor a .Ⅲ.Read and complete(读一读,选词填空完成句子,将答案写在答题纸上):6%1.We can leam new words in _,Wow, so nice!2. The drill is too loud. Kitty didn't like it .3. Please don't watch TV. It's not good for your eyes.4. Look at the moths. They can _ on a leaf.5. --- I'm too tired. Shall we play games _, dear? - OK, Mum.6. They went to the Ocean World last week There were lovely fishes in it.2.Ⅳ.Choose the best answer(选择最恰当的答案,将字母代号写在答题纸上):12%1.?“Boom?Boom?”What's that noise? ?It's ___.A. a lorryB. a drillC.a drum2. --- Shall we ___on the Internet? - Great.A. chatB. chattingC. Chats3. --- Ben, is this _ schoolbag? - No, is in the desk.A.your. . . myB. yours . . .mineC. your. . . mine4. --- Can you make a sound___? - Of course, I can shout___ .A.loud. . . loudlyB. loudly. . . loudC. loudly. . .loudly5. It's 11:30. It's time ___lunch. Let's go ___the canteenA. to. . . toB. for. . .toC. of. . .into6. These children eat too many___ every day. They aren't healthy.A. vegetableB. sweetsC. sweet food7. --- Would you like ___green tea, Grandpa? - Thank you. You're a good boyA. someB. anyC. a8. Once he___ a little baby. Now he ___a big boy.A. is... isB. is... wasC. was... is9. Do you know how the insect grows? Which one is correct (正确的) ?A. egg→cocoon→caterpillar→butterflyB. egg→silkworm→cocoon→butterflyC. egg→silkworm→ cocoon→moth10. --- Where is the supermarket, Mum? -- Look! It's on our right.A. Here we are. B Here you are. C. Here they are.11. --- - Once a month.A. How do you go to the library?B. How ofien do you go to the library?C. When do you go to the library?12. --- - You should wear warm clothes.A. Do you wear warm clothes?B. What should I do?C. Should I wear warm clothes?V. Rewrite the sentences(按要求改写下列句子,每线—词,将答案写在答题纸上):lO% 1.There is some beef in the fridge.(改成一般疑问句)there beef in the fridge?2.Please put the brushes on the shelf(改成否定句). put the brushes on the shelf,3.The children are at City Square now. (用yesterday替换now,其余部分作相应调整)The at City Square yesterday.4. These are Danny’s notebooks. (根据划线部分提问)notebooks are ?5. I had some rice and meat for lunch. What you for lunch?(根据划线部分提问)Ⅵ.Read and write(读一读,用适当的单词填空,使句子完整,每线一词,将答案写在答题纸上):7%1. The students can sing and dance in this class. Most students like it. It's a class.2. Snow White isa film about a beautiful and seven dwarfs. 3. I like carrots and very much. They are my favourite vegetables 4. Jim likes some exercise all day and all night. So he runs quickly into the hole. 5. Yesterday Linda a loud noise in the garden. She was afraid. 6. The young man lives in Shanghai.He often rides a bike or a _ to work. 7. There is an egg in the nest. Please guess...It may become a .Part 3 Reading and Writing(阅读与写话部分)22%I.Read and choose(选择适当的句子完成对话,每句限用一次,将字母代号写在答题纸上):5%It's lunch time. The children are having lunch togetherJane: I'm having chicken and cabbages. 1__________________Danny I'm having pork, eggs and my favourite beef. Oh, carrots... Peter: What's wrong, Danny? 2________________________Danny No, I don't like vegetables. I hate (i讨厌) carrots. I like meat. Jane: You can't eat too much meat. 3________________________Peter: Jane is right. You should eat a healthy meal.Danny 4____________________________Peter: Eat more vegetables and fruit and eat less meat.Danny Oh, I see. 5___________________________Peter: So, your pork and beef are mine now!Danny Hey, you!Ⅱ.Reading comprehension(阅读理解):11%A Read and judge(阅读短文,判断正误,用T或F表示,将答案写在答题纸上):6% Mary is a beautiful girl. She has a pet-a blue bird. Its name is Gigi. One day she saw the bird standing on a small box. It was very sad. Mary asked her mother why. Her mother said, ‘I think it has no friends to play with. We can find some friends for it.' ‘But where can we find it some friends?' ‘I have an idea,' said Mother. Then they found some corn and much rice in the kitchen and put them outside near the bird. Soon many hungry birds came. Gigi saw many birds here and there. It was happy. Mary and her mother were happy too.(洼:划线单词为动词的过去式see-saw ask-asked say-said find-found come-came)1. Mary's pet is a black bird.2. Mary and Gigi were together but Gigi was unhappy.3. The bird was on a small box.4. Mary's mother put some corn and rice in the kitchen.5. There were many hungry birds eating around Gigi.6. Finally, Gigi played with many birds happily.B. Read and answer(阅读短文,正确回答下列问题,将答案写在答题纸上):5%I don't need my earsMin is a cat. One day, Min is tired and he wants to sleep in the house.He can hear an aeroplane flying in the sky.“Woof, woof.” Here comes a dog. Dogs and cats are not friends. The dog doesn't like Min and runs away.Min can't hear the dog. But he can hear the cars and a boat. They are very noisy. They nearly make him crazy(疯狂). He looks very sad because he wants to sleep. ‘Ring! Ring! ' A telephone. ‘Ting! Ting! 'A bicycle. ‘Beep! Beep! ' A car. ‘Oh, my god! ' Min becomes very angry and he shouts, ‘I don't like noises! Who can give me quiet environment (坏境)! I don't need my ears!'1. Why does Min want to sleep?2. Is there an aeroplane flying in the sky?3. Is it quiet or noisy outside?4. Does Min like the noises?5. How does Min feel in the end?Ⅲ.Think and write(同学们,校园生活丰富多彩!请选择其中的一天,有My school life为题,写写你最喜欢的课程、活动等,并说说喜欢的理由。
浦东新区2013学年度第二学期初二期末数学试卷
浦东新区2013学年度第二学期初二期末数学试卷浦东新区2010学年度第二学期期末质量抽测初二数学试卷(完卷时间:90分钟,满分:100分)1.一次函数24--=x y 的截距是().(A)4; (B)-4;(C)2;(D)-2. 2.下面的方程组,不是二元二次方程组的是().(A) ==-;2,32y x x (B) ()()=+--=;11,1x y x x y(C) =+=+;2,1yz x y x (D) ?==-.2,1xy y x3.在□ABCD 中,∠A =30°,则∠D 的度数是()(A)30°; (B) 60°; (C) 120°;(D) 150°. 4.如图,DE 是△ABC 的中位线,下面的结论中错误的是().(A )AB DE 21=; (B )AB ∥DE ;(C )DE BC 2=; (D )DE AB 2=.5.如图,在□ABCD 中,+等于(). (A) ; (B) ;(C) DB ; (D) CA .6.将一个圆盘分为圆心角相等的8个扇形,各扇形涂有各种颜色,如图.任意转动转盘,停止后指针落在每个扇形内的可能性大小都一样(当指针落在扇形边界时,统计在逆时针方向相邻的扇形内).则指针落在红色区域的概率是().(A)81; (B) 83 ; (C) 53; (D) 43. 二、填空题(每小题3分,共36分)7.方程13=-x 的解是.8.如果过多边形的一个顶点共有3条对角线,那么这个多边形的内角和是 .9.已知O 是□ABC D 的对角线AC 与BD 的交点,AC =6,BD =8,AD =6,则⊿OBC 的周长等于.10.如图,已知菱形ABCD 中,∠ABC 是钝角,DE 垂直平分边AB ,若AE =2,则DB = .第4题图E DCBA 第5题图D CBA 第10题图E D CBA 第6题图11.如图,已知梯形ABCD 中,AB ∥CD ,DE ∥CB ,点E 在AB 上,且 EB=4,若梯形ABCD 的周长为24,则△AED 的周长为.12.已知等腰梯形的一条对角线与一腰垂直,上底与腰长相等,且上底的长度为1,则下底的长为.13.如果一个等腰梯形的中位线的长是3cm ,腰长是2cm ,那么它的周长是 cm .14.如图,点D 、E 、F 分别是△ABC 三边的中点,则向量的相等向量是,相反向量是,平行向量是(各写一个).15.=-AC AB .16.“顺次联结四边形四条边中点的四边形是矩形”是事件(填“必然”或“随机”).17.掷一枚质地均匀的骰子(各面的点数分别为1,2,3,4,5,6),对于下列事件:(1)朝上一面的点数是2的倍数;(2)朝上一面的点数是3的倍数;(3)朝上一面的点数大于2.如果用321P P P 、、分别表示事件(1)(2)(3)发生的可能性大小,那么把它们从大到小排列的顺序是.18.从-1,1中任取一个数作为一次函数b kx y +=的系数k ,从-2,2中任取一个数作为一次函数b kx y +=的截距b ,则所得一次函数b kx y +=经过第一象限的概率是.三、解答题(19、20题,每题5分;21、22题,每题6分,共22分)19.已知一次函数b kx y +=的图像过点(1,2),且与直线32 1+-=x y 平行.求一次函数b kx y +=的解析式.20.解方程:1121=---x xx x .第11题图E D CBA 第14题图F E DCBA21.已知:如图,AE ∥BF ,AC 平分∠BAD ,交BF 于点C ,BD 平分∠ABC ,交AE 于点D ,联结CD .求证:四边形ABCD 是菱形.22.如图,在平面直角坐标系中,O 为原点,点A 、B 、C 的坐标分别为(2,0)、(-1,3)、(-2,-2).(1)在图中作向量+;(2)在图中作向量-;(3)填空:=++CA BC AB .四、解答题(23、24题,每题7分;25、26题,每题8分,共30分)23.解方程组:=+-=+.023,622y xy x y xFO EDC BA第21题图第22题图24.一个不透明的口袋里装有2个红球和1个白球,它们除颜色外其他都相同.(1)摸出一个球再放回袋中,搅匀后再摸出一个球.求前后都摸到红球的概率(请用列表法或画树状图法说明).(2)若在上述口袋中再放入若干个形状完全一样的黄球,使放入黄球后摸到红球(只摸1次)的概率为51,求放入黄球的个数.25.如图,ABCD 是正方形,点G 是线段BC 上任意一点(不与点B 、C 重合),DE 垂直于直线AG 于E ,BF ∥DE ,交AG 于F . (1)求证:EF BF AF =-;(2)当点G 在BC 延长线上时(备用图一),作出对应图形,问:线段AF 、BF 、EF 之间有什么关系(只写结论,不要求证明)?(3)当点G 在CB 延长线上时(备用图二),作出对应图形,问:线段AF 、BF 、EF 之间又有什么关系(只写结论,不要求证明)?备用图二备用图一GG F EDCBA第25题图26.如图,在直角梯形COAB中,CB∥OA,以O为原点建立直角坐标系,A、C的坐标分别为A(10,0)、C(0,8),CB=4,D为OA中点,动点P自A点出发沿A→B→C→O的线路移动,速度为1个单位/秒,移动时间为t秒.(1)求AB的长,并求当PD将梯形COAB的周长平分时t的值,并指出此时点P在哪条边上;(2)动点P在从A到B的移动过程中,设⊿APD的面积为S,试写出S与t的函数关系式,并指出t的取值范围;(3)几秒后线段PD将梯形COAB的面积分成1:3的两部分?求出此时点P的坐标.第26题图。
浦东新区2013学年度第二学期期末质量检测
浦东新区2013学年度第二学期期末质量检测高一英语翻译热身Group A1.记得把药放在孩子们够不到的地方.(reach)2.正是在媒体中心,奥运期间的所有赛事都得以报道.(cover)3.当那条蛇在屏幕上出现时,在场的一些女士害怕地喊叫起来.(emerge)4.他们完全忽视了这些事实,就仿佛它们不存在似的。
(ignore)5.我很遗憾地告诉大家,计划因资金不足而不得不取消。
(regret)Group B1.请尽早做出决定,不然你会坐失良机。
(or)2.应该鼓励学生将课堂上所学的知识运用到实践中去。
(apply)3.这部有关于第一次世界大战的历史小说引人入胜,我简直爱不释手。
(so…that)4.我对学生所谈论的电子产品一无所知,我发现自己落伍了。
(ignorant)5.朋友是无论发生什么,都能与你同甘共苦的人。
(share)Group C1.很多人意识到寻求一种完全不同的学习方式来进一步开发他们潜能,是一种非常积极的态度。
(aware)2.随着人口的飞速增长,能源的缺乏正成为一个越来越大的问题。
(lack)3.随着调查的深入,这起事故的主要原因已查明,最终结论将在下周公诸于世。
(With)4.由于他随意的态度,他在工作中频频出错,这让与他共事的同事们很反感。
(which)5.自从在人民公园见面后就一直和我们保持联系的那位法国作家来了。
(Here…)Group D1.他意识到自己犯了一个严重的错误。
(aware)2.据说今晚公司将设宴招待澳大利亚专家。
(honor)3.孩子们总是对周边的一切都非常好奇。
(curious)4.大家都认为很多自然灾害与非法砍伐树木息息相关。
(relate)5.无论你生活在哪个国家,这些国家的风俗有多么不同,友好和乐于助人总是礼貌的一部分。
(Whatever)。
- 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。
浦东新区2013学年度第二学期期末质量抽测初二数学(测试时间100分钟,满分100分)一、选择题:(本大题共6题,每题3分,满分18分)1.下列方程中,不是整式方程的是………………………………………………………( )(A )32532=-x x ;(B )262xx x =-; (C )07322=-x ;(D )0325=-x x .2.下列各对数值中,属于方程032=-y x 的解的一对是………………………………( )(A )⎩⎨⎧==;3,0y x(B )⎩⎨⎧==;0,3y x(C )⎩⎨⎧==;9,3y x(D )⎩⎨⎧==.3,3y x3.如图,已知一次函数y =kx +b 的图像经过A 、B 两点,那么不等式kx +b >0 的解集是 ………………………………………………………( ) (A )x >5; (B )x <5; (C )x >3;(D )x <3.4.下列事件:①浦东明天是晴天,②铅球浮在水面上,③平面中,多边形的外角和都等于360度,属于确定事件的个数有……………………………………………………………() (A )0个;(B )1个;(C )2个;(D )3个.5.下列各式错误的是………………………………………………………………………( ) (A )0)(=-+m m ;(B 0=;(C )m n n m +=+;(D ))(n m n m -+=-.6.如果菱形的两条对角线长分别为10cm 和24cm ,那么这个菱形的周长为……………( ) (A )13cm ;(B )34cm ;(C )52cm ;(D )68cm .二、填空题:(本大题共12题,每题2分,满分24分)7.如果1)2(-++=m x m y 是常值函数,那么m = .8.已知直线l 与直线y =-4x 平行,且截距为6,那么这条直线l 的表达式是 . 9.如果一次函数y =kx +b 的图像经过第二、三、四象限,那么函数y 的值随着自变量x 的值的增大而 . 10.方程2342-=-x x x 的解是 . 11.方程组⎩⎨⎧=+-=2,122y x x y 的解是 .12.木盒中有1个红球和2个黄球,这三个球除颜色外其他都相同.从盒子里先摸出一个球,然后放回去摇匀后,再摸出一个球.两次都摸到黄球的概率是 . 13.如果一个多边形的每一个内角都等于144度,那么这个多边形的边数是 . 14.如果一个四边形要成为矩形,那么对角线应满足的条件是 . 15.已知矩形ABCD 的长和宽分别为8和6,那么顶点A 到对角线BD 的距离等于 . 16.如果一个四边形的两条对角线长分别为7cm 和12cm ,那么顺次联结这个四边形各边中点所得四边形的周长是 cm .17.如图,已知在梯形ABCD 中,AD ∥BC ,∠B =30°,∠C =75°,AD =2,BC =7,那么AB = .18.如图,已知E 是□ABCD 的边AB 上一点,将△ADE 沿直线DE 折叠,点A 恰好落在边BC 上的点F 处,如果△BEF 的周长为7,△CDF 的周长为15,那么CF 的长等于 .三、解答题:(本大题共8题,满分58分) 19.(本题满分4分)如图,已知向量a 、b 、c .求作:c b a -+.(第18题图)A DC B(第17题图)(不要求写作法,但要写出结论) 20.(本题满分6分)解方程:112=+-x x . 21.(本题满分6分)解方程组:⎪⎪⎩⎪⎪⎨⎧=++=+-.1121,1165y x y x22.(本题满分8分,其中第(1)小题5分,第(2)小题3分)某长途汽车公司规定:乘客坐车最多可免费携带20千克重量的行李,如果超过这个重量(但不能超过50千克),那么需要购买行李票.假设行李票的价格y (元)与行李的重量x (千克)之间是一次函数关系,其图像如图所示. 求:(1)y 关于x 的函数解析式,并写出它的定义域; (2)携带45千克的行李需要购买多少元行李票?23.(本题满分8分) 已知:如图,在△ABC 中,AB =AC ,过点A 作MN ∥BC ,点D 、E 在直线MN 上,且DA =EA BC 21. 求证:四边形DBCE 是等腰梯形.(第23题图)2050 (第22题图)24.(本题满分8分)某班为了鼓励学生积极开展体育锻炼,打算购买一批羽毛球.体育委员小张到商店发现,用160元可以购买某种品牌的羽毛球若干桶,但商店营业员告诉他,如果再加60元,那么就可以享受优惠价,每桶比原价便宜10元,因此可以多买5桶羽毛球,求每桶羽毛球的原价. 25.(本题满分8分,其中第(1)小题3分,第(2)小题5分)已知:如图,在直角坐标平面中,点A 在x 轴的负半轴上,直线3+=kx y 经过点A ,与y 轴相交于点M ,点B 是点A 关于原点的对称点,过点B 的直线BC ⊥x 轴,交直线3+=kx y 于点C ,如果∠MAO =60°. (1)求这条直线的表达式;(2)将△ABC 绕点C 旋转,使点A 落到x 轴上另一点D 处,此时点B 落到点E 处.求点E 的坐标.(第25题图)26.(本题满分10分,其中第(1)、(2)小题各3分,第(3)小题4分)已知:如图,正方形ABCD的对角线相交于点O,P是边BC上的一个动点,AP交对角线BD于点E,BQ⊥AP,交对角线AC于点F、边CD于点Q,联结EF.(1)求证:OE=OF.(2)联结PF,如果PF∥BD,求BP∶PC的值.(3)联结DP,当DP经过点F时,试猜想点P的位置,并证明你的\DQ(第26题图)D(第26题备用图)浦东新区2013学年度第二学期期末质量抽测初二数学参考答案及评分说明一、选择题:1.B ; 2.D ; 3.B ; 4.C ; 5.A ; 6.C . 二、填空题: 7.-2; 8.y =-4x +6;9.减小;10.-3;11.⎩⎨⎧==,1,111y x ⎩⎨⎧-=-=.7,322y x 12.94; 13.10; 14.互相平分且相等; 15.524; 16.19; 17.5; 18.4.三、解答题:19.解:图略.………………………………………………………………………………(3分)结论.………………………………………………………………………………(1分) 20.解:12122+=+-x x x .……………………………………………………………(2分)042=-x x .………………………………………………………………………(1分)x 1=4,x 2=0.………………………………………………………………………(2分) 经检验:x =4是原方程的解,x =0不是原方程的解.……………………………(1分) ∴原方程的解为x =4.21.解:⎪⎪⎩⎪⎪⎨⎧=++=+-.1121,1165y x y x由①+②×3,得48=x.……………………………………………………………(1分)解得x =2.…………………………………………………………………………(1分)由②×5-①,得4116=+y .…………………………………………………………(1分) 解得y =3.…………………………………………………………………………(1分)∴⎩⎨⎧==.3,2y x …………………………………………………………………………(1分) 经检验:⎩⎨⎧==3,2y x 是原方程组的解.………………………………………………(1分)∴原方程组的解是⎩⎨⎧==.3,2y x22.解:(1)设行李票的价格y (元)与行李的重量x (千克)之间的一次函数解析式为y =kx +b .…………………………………………………………………………………(1分)① ②由题意,得⎩⎨⎧+=+=.5030,200b k b k …………………………………………………………(1分)解得⎩⎨⎧-==.20,1b k ………………………………………………………………………(1分)∴所求的函数解析式为y =x -20.…………………………………………………(1分) 定义域为5020≤<x .…………………………………………………………(1分) (2)当x =45时,y =25.…………………………………………………………(2分) 答:携带45千克的行李需要购买25元行李票.………………………………(1分)23.证明:∵MN ∥BC ,DA =EA BC 21≠,∴四边形DBCE 是梯形.…………………(2分)又∵AB =AC ,∴∠ABC =∠ACB .…………………………………………………(1分) ∵MN ∥BC ,∴∠ABC =∠DAB ,∠ACB =∠EAC .………………………………(2分) ∴∠DAB =∠EAC .…………………………………………………………………(1分) ∵AB =AC ,DA =EA ,∴△DAB ≌△EAC .………………………………………(1分) ∴BD =CE ,即梯形DBCE 是等腰梯形.…………………………………………(1分)24.解:设每桶羽毛球的原价为x 元.……………………………………………………(1分)由题意,得516010220=--xx .……………………………………………………(3分)整理,得0320222=--x x .……………………………………………………(1分) 解得x 1=32,x 2=-10.………………………………………………………………(1分)经检验:x 1=32,x 2=-10都是原方程的解,但x 2=-10不符合题意,舍去.…(1分) 答:每桶羽毛球的原价为32元.…………………………………………………(1分)25.解:(1)由题意,得点M 的坐标为(0,3),即OM =3.……………………(1分)∵∠CAB =60°,∴AO =1,即点A 的坐标为(-1,0).…………………………(1分) ∵直线3+=kx y 经过点A ,∴30+-=k ,即3=k .∴这条直线的表达式为33+=x y .…………………………………………(1分) (2)由题意,得点B 的坐标为(1,0).…………………………………………(1分) 由旋转可知,CD =CA .∵BC ⊥x 轴,∴DB =AB =2,即点D 的坐标为(3,0).…………………………(1分) 过点E 作EH ⊥x 轴,垂足为点H .∵∠CDB =∠CDE =∠CAB =60°,∴∠EDH =60°.……………………………(1分) 又∵DE =AB =2,∴DH =1,3=EH .…………………………………………(1分) ∴点E 的坐标为(4,3).………………………………………………………(1分)26.(1)证明:在正方形ABCD 中,∵AO ⊥BO ,∴∠AOE =∠BOF =90°.∵BQ ⊥AP ,∠AEO =∠BEP ,∴∠EAO =∠FBO .………………………………(1分) ∵AO =BO ,∴△AOE ≌△BOF .…………………………………………………(1分)∴OE =OF .…………………………………………………………………………(1分) (2)解:∵OE =OF ,BO ⊥CO ,∴∠OEF =∠OFE =45°.∴∠OEF =∠OBC =45°. ∴EF ∥BC . ∵PF ∥BD ,∴四边形BEFP 是平行四边形.……………………………………(1分) ∵EP ⊥BF ,∴□BEFP 是菱形.…………………………………………………(1分) ∴BP =FP .∵∠PFC =90°,∠FCP =45°,∴FP =FC .∴2221===PC FP PC BP .………………………………………………………(1分) (3)解:P 是边BC 的中点.…………………………………………………………(1分) 证明如下:∵OE =OF ,AO =DO ,∠AOE =∠DOF ,∴△AOE ≌△DOF .…………………(1分) ∴∠EAO =∠FDO .…………………………………………………………………(1分) ∵AC =BD ,∠ACP =∠DBP ,∴△ACP ≌△DBP .………………………………(1分) ∴PB =PC ,即点P 是边BC 的中点.。