2015年上海中考长宁区初三数学二模试卷及答案.pdf

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1、初三数学共 4 页第1页ABCDEO第 6 题图2015 年初三数学教学质量检测试卷考试时间100 分钟，总分值150 分考生注意:1本试卷含三个大题，共25 题答题时，考生务必按答题要求在答题纸规定的位置上作答，在草稿纸、本试卷上答题一律无效2除第一、二大题外，其余各题如无特别说明，都必须在答题纸的相应位置上写出证明或计算的主要步骤一、单项选择题:本大题共6 题，每题4 分，总分值24 分1.将抛物线2xy向右平移 3个单位得到的抛物线表达式是()A.23xy；B.23xy；C.32xy；D.32xy.2.以下各式中，与3是同类二次根式的是()A.13；B.6；C.9；D.12.3.一组数据

2、:5,7,4,9,7的中位数和众数分别是()A.4,7；B.7,7；C.4,4；D.4,5.4.用换元法解方程:253322yyyy时，如果设32yyx，那么原方程可化为()A.02522xx；B.0152xx；C.02522xx；D.01522xx.5.在以下图形中，等边三角形，正方形，正五边形，正六边形.其中既是轴对称图形又是中心对称的图形有()A.1个；B.2个；C.3个；D.4个.6.如图，在四边形ABCD 中，ABC=90，对角线AC、BD 交于点 O，AO=CO，AOD=ADO，E 是 DC 边的中点.以下结论中，错误的选项是()A.ADOE21；B.OBOE21；C.；OCOE2

3、1；D.BCOE21.二、填空题:本大题共12 题，每题4 分，总分值48 分7.计算:219=初三数学共 4 页第2页中年？老年20%青年60%第 12 题图MFEDCBA第 18 题图8.计算:23nm=9.方程132x的解是 10.假设关于x 的二次方程032aaxx有两个相等的实数根，则实数a=11.从数字 1,2,3,4中，任意取两个数字组成一个两位数，这个数是素数的概率是 12.2015年1月份，某区体委组织“迎新春长跑活动”，现将报名的男选手分成:青年组、中年组、老年组.各组人数所占比例如下图，已知青年组 120人，则中年组的人数是 13.已知akb，如果2a，6b，那么实数k=

4、14.已知1O和2O的半径分别是 5和3，假设21OO=2，则两圆的位置关系是 15.已知在离地面 30米的高楼窗台A 处测得地面花坛中心标志物C 的俯角为60，那么这一标志物C 离此栋楼房的地面距离BC 为 米16.已知线段AB=10，P 是线段 AB 的黄金分割点(AP PB)，则 AP=17.请阅读以下内容:我们在平面直角坐标系中画出抛物线12xy和双曲线xy2，如图所示，利用两图像的交点个数和位置来确定方程xx212有一个正实数根，这种方法称为利用函数图像判断方程根的情况.请用图像法判断方程xx2432的根的情况 填写根的个数及正负18.如图，ABC DEF 点 A、B 分别与点D、E

5、 对应，AB=AC=5，BC=6，ABC 固定不动，DEF 运动，并满足点E 在 BC 边从 B 向 C 移动点E 不与 B、C 重合，DE 始终经过点A，EF 与 AC边交于点M，当 AEM 是等腰三角形时，BE=.三、解答题:本大题共7 题，总分值78 分19 此题总分值10 分解不等式组325,5)5.1(2mmm，并将解集在数轴上表示出来.BCA第 15 题图xyO第 17 题图文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M

6、5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:

7、CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M

8、5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:

9、CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M

10、5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:

11、CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M

12、5D3 ZT6B2T4X8Q2初三数学共 4 页第3页20 此题总分值10 分先化简，再求代数式的值:aaaaa112122，其中13a.21 此题总分值10 分在一次运输任务中，一辆汽车将一批货物从甲地运往乙地，到达乙地卸货后返回甲地.设汽车从甲地出发xh时，汽车与甲地的距离为ykm，y 与 x 的关系如下图.根据图像答复以下问题:1汽车在乙地卸货停留h；2求汽车返回甲城时y 与 x 的函数解析式，并写出定义域；3求这辆汽车从甲地出发4 h 时与甲地的距离.22 此题总分值10 分如图，AD 是等腰 ABC 底边上的高，且AD=4，54sin B.假设 E 是 AC 边上的点，且满足 AE:

13、EC=2:3，联结 DE，求ADEcot的值.23 此题总分值12 分如图，正方形ABCD 中，点 E、F 分别在边BC、CD 上，AE=AF，AC 和 EF 交于点 O，延长 AC 至点 G，使得 AO=OG，联结 EG、FG.1求证:BE=DF；2求证:四边形 AEGF 是菱形.DFGCOEBA第 23 题图第 22 题图EDCBA第 21 题图xy（km）（h）521202.5O文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5

14、D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:C

15、M4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5

16、D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:C

17、M4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5

18、D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:C

19、M4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5

20、D3 ZT6B2T4X8Q2初三数学共 4 页第4页24 此题总分值12 分如图，已知抛物线2222ttxxy的顶点 A 在第四象限，过点A 作 ABy 轴于点 B，C 是线段 AB 上一点(不与 A、B 重合)，过点 C 作 CDx 轴于点 D，并交抛物线于点P.1假设点C 的横坐标为1，且是线段AB 的中点，求点P 的坐标；2假设直线AP 交 y 轴负半轴于点E，且 AC=CP，求四边形OEPD 的面积 S关于 t 的函数解析式，并写出定义域；3在 2的条件下，当ADE 的面积等于2S时，求 t 的值.25 此题总分值14 分如图，已知矩形ABCD，AB=12 cm，AD=10 cm，O

21、与 AD、AB、BC 三边都相切，与DC交于点 E、F。已知点P、Q、R 分别从 D、A、B 三点同时出发，沿矩形ABCD 的边逆时针方向匀速运动，点P、Q、R 的运动速度分别是1 cm/s、x cm/s、cm/s，当点 Q 到达点 B 时停止运动，P、R 两点同时停止运动.设运动时间为t单位:s.1求证:DE=CF；2设 x=3，当 PAQ 与 QBR 相似时，求出t 的值；3设 PAQ 关于直线PQ 对称的图形是PAQ，当 t 和 x 分别为何值时，点A与圆心 O 恰好重合，求出符合条件的t、x 的值.第 24 题图xyOEPDCBA第 25 题图OFEDCBAPQR文档编码:CM4C1F

22、1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT

23、6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F

24、1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT

25、6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F

26、1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT

27、6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F

28、1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2初三数学共 4 页第5页20 x12015 年初三数学教学质量检测试卷参考答案一、单项选择题:本大题共6 题，每题4 分，总分值24 分1.A；2.D；3.B；4.A；5.B；6.D.二、填空题:本大题共12 题，每题4 分，总分值48 分7.31；8.26nm；9.-1；10.6 或-2；11.125；12.40；13.3；14.内切；15.310；16.555；17.2 正根

29、，1 负根；18.1 或611.二、填空题:本大题共12 题，每题4 分，总分值48 分19 此题总分值10 分解:323532mm3 分2 分化简得21mm3 分不等式组的解集是21m.2 分20 此题总分值10 分解:原式=aaaaaaa11112-1222 分=aaaaaa1122-12222 分=aaaa1-1322 分=a13 2 分=33=32 分21 此题总分值10 分解:1；2 分2设)0(kbkxy1 分把，120和 5，0分别代入第 21 题图xy（km）（h）521202.5O文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4

30、C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3

31、 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4

32、C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3

33、 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4

34、C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3

35、 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4

36、C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2初三数学共 4 页第6页得bkbk505.2120，解得24048bk3 分解析式为55.224048xxy.1 分3当 x=4 时，48240448y2 分这辆汽车从甲地出发4 h 时与甲地的距离48 km.1 分22 此题总分值10 分解:作 EFAD 于点 F.1 分ADBC ADB=90在 RtABD 中，AD=4，54sinABADBAB=53-22ADABBD等腰 ABCAB=ACAC=5ADBCDB=DCDC=3 4 分EFADADBCE

37、F/BCADAFDCEFACAE32ECAEAC=5DC=3EF=56AF=58DF=5124 分在 RtEFD 中，2cotEFDFADE.1 分23 此题总分值12 分证：1正方形ABCD AB=AD B=D=90在 RtABD 和 RtACD 中AFAEADABDFGCOEBA第 23 题图FABCDE第 22 题图文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 H

38、G4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8

39、Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 H

40、G4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8

41、Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 H

42、G4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8

43、Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2初三数学共 4 页第7页 ABE A

44、DFBE=DF.5分 2正方形ABCD BC=CD BE=DFCE=CF ECF 是等腰三角形正方形ABCD AC 平分 BCDAC EF 且 EO=OFAO=OG四边形AEGF 是平行四边形 5 分AC EF四边形AEGF 是菱形.2 分24 此题总分值12 分解：12-22222txttxxyAt，-2 2 分点 C 的横坐标为1，且是线段AB 的中点t=21 分2-2-x2yP1，-1.1分2据题意，设C x，-2 0 x t，Px，2)(2txAC=t-x，PC=2)(tx1 分AC=PCt-x=2)(txx t t-x=1即 x=t-1 AC=PC=12 分DC/y 轴ABACEBP

45、CEB=tOE=2-t 23221)1)(3(21)(212ttttODDPOES1 t 2.2 分3ttABDPSADE21121211 分SSADE2)23221(2212ttt解得231t，22t不合题意23t.2 分第 24 题图xyOEPDCBA文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1

46、T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6

47、B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1

48、T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6

49、B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1

50、T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6B2T4X8Q2文档编码:CM4C1F1T7O8 HG4X7H1M5D3 ZT6