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2022年中考全真模拟试卷一 .pdf

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1、2009年中考全真模拟试卷（一）班级:姓名:座号:评分:一、选择题（每小题2 分，共 20 分）1、32的值是（）A、3 B、3 C、9 D、9 2、下列二次根式是最简二次根式的是（）A、21 B、8 C、7 D、以上都不是3、下列计算中，正确的是（）A、X3X3=X6 B、a6a2a3 C、3a+5b=8ab D、(ab)3 a3b34、1mm 为十亿分之一米，而个体中红细胞的直径约为0.0000077m，那么人体中红细胞直径的纳米数用科学记数法表示为（）A、7.7 103mm B、7.7 102mm C、7.7 104mm D、以上都不对5、如图 2，天平右盘中的每个砝码的质量为 10g，

2、则物体M的质量 m(g)的取值范围，在数轴上可表示为（）6、如图 3，将 BAC沿 DE向 BAC内折叠，使AD与 AD重合，AE与 AE重合，若 A300，则 1+2（）A、500 B、600 C、450 D、以上都不对7、某校九（3）班的全体同学喜欢的球类运动用图4 所示的统计图来表示，下面说法正确的是（）A、从图中可以直接看出喜欢各种球类的具体人数；B、从图中可以直接看出全班的总人数；C、从图中可以直接看出全班同学初中三年来喜欢各种球类的变化情况；D、从图中可以直接看出全班同学现在喜欢各种球类的人数的大小关系。8、下列各式中，能表示y 是 x 的函数关系式是（）A、y=xx12 B、y=

3、x3 C、y=xx21 D、y=x9、如图 5，PA为 O的切线，A为切点，PO交 O于点 B，PA8，OA 6，则 tan APO的值为（）A、43 B、53 C、54 D、3410、在同一直角坐标系中，函数y=kx+k，与y=xk（k0）的图像大致为（）二、填空题（每小题2 分，共 20 分）11、（3）2（-3.14）0。12、函数 y=11xx的自变量X的取值范围为。13、据世界统计年鉴2000记载 1996 年中国、美国、印度、澳大利亚四个国家的人口分别为122389，26519，94561，1831 万人，则以上四国人口之比为（精确到0.01）14、一个圆形花圃的面积为300m2，

4、你估计它的半径为（误差小于0.1m）15、小明背对小亮按小列四个步骤操作：（1）分发左、中、右三堆牌，每堆牌不少于两张，且各堆牌现有的张数相同；（2）从左边一堆拿出两张，放入中间一堆；（3）从右边一堆拿出两张，放入中间一堆；（4）左边一堆有几张牌，就从中间一堆拿几张牌放入左边一堆，当小亮知道小明操作的步骤后，便准确地说出中间一堆牌现有的张数，你认为中间一堆牌现有的张数是。16、在正方形的截面中，最多可以截出边形。17、要作出一个图形的旋转图形，除了要知道原图形的位置外，还要知道。18、小明从前面的镜子里看到后面墙上挂

5、钟的时间为2：30，则实际时间是。文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5

6、 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3

7、文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C

8、3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3

9、L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9

10、W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J

11、4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W319、某同学在使用计算器求20 个数的时候，错将88 误输入为 8，那么由此求出的平均数与实际平均数的差为。20、一束光线从Y轴上点 A（0，1）出发，经过X轴上的点C反射后经过点B（3，3）,则光线从 A点到

12、B点经过的路程长为。三解答下列各题（有10 小题，共80 分）21、（本小题满分5 分）当 a=3，b=2 时，计算：abbaabaa22的值；22、（本小题满分5 分）已知：CD为一幢 3 米高的温室，其南面窗户的底框G距地面 1 米，CD在地面上留下的最大影长CF为 2 米，现欲在距 C点 7米的正南方A点处建一幢12 米高的楼房AB（设 A,C,F在同一水平线上）（1）、按比例较精确地作出高楼AB 及它的最大影长 AE；（2）、问若大楼AB建成后是否影响温室CD的采光，试说明理由。23、（本小题满分6 分）观察下面的点阵图，探究其中的规律。摆第 1 个“小屋子”需要5 个点，摆第2 个“

13、小屋子”需要个点，摆第 3 个“小屋子”需要个点？（1）、摆第 10 个这样的“小屋子”需要多少个点？图 7（2）、写出摆第n 个这样的“小屋子”需要的总点数，S与 n 的关系式。24、（本小题满分6 分）已知抛物线与x 轴交于 A（1，0）和 B（3，0）两点，且与y 轴交于点 C（0，3）。文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5

14、ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文

15、档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3

16、W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L

17、5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W

18、3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4

19、C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O

20、3L5 ZE10C5J6Y9W3（1）求抛物线的解析式；（2）抛物线的对称轴方程和顶点M坐标；（3）求四边形ABMC 的面积。25、（本题满分8 分）同学：你去过黄山吗？在黄山的上山路上，有一些断断续续的台阶，如图8 是其中的甲、乙段台阶路的示意图，图 8 中的数字表示每一级台阶的高度(单位:cm).并且数 d,e,e,c,c,d的方差 p,数据 b,d,g,f,a,h的方差q，(10cm a b cd e f g h 20cm,且 pq），请你用所学过的有关统计知识（平均数、中位数、方差和极差）回答下列问题：（1）两段台阶路有哪些相同点和不同点？（2）哪段台阶路走起来更舒服？为什么？（3）为

21、方便游客行走，需要重新整修上山的小路.对于这两段台阶路，在台阶数不变的情况下，请你提出合理的整修建议.26、（本小题满分8 分）在平面直角坐标系中，圆心O的坐标为（-3，4），以半径r 在坐标平面内作圆，（1）当 r 时，圆 O与坐标轴有1 个交点；（2）当 r 时，圆 O与坐标轴有2 个交点；（3）当 r 时，圆 O与坐标轴有3 个交点；（4）当 r 时，圆 O与坐标轴有4 个交点；27、（本小题满分10 分）某地区为了加大“退耕还林”的力度，出台了一系列的激励措施：在“退耕还林”过程中，每一年的林地面积达到10 亩且每年的林地面积在增加的农户，当年都可得生活补贴费2000 元，且每超过10

22、亩的部分还给予奖励每亩a 元，在林间还有套种其他农作物，平均每亩还有 b 元的收入。下表是某农户在头两年通过“退耕还林”每年获得的总收入情况：e c c e d d 甲路段f h a g d b 乙路段图 8 文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 Z

23、E10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档

24、编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W

25、6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5

26、 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3

27、文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C

28、3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3年份拥有林地的亩数年总收入2002 20 3100

29、元2003 26 5560 元（注：年总收入生活补贴量+政府奖励量种农作物收入）（1）试根据以上提供的资料确定a、b 的值。（2）从 2003 年起，如果该农户每年新增林地的亩数比前一年按相同的增长率增长，那么2005 年该农户获得的总收入达到多少元？28、（本小题满分10 分）集市上有一个人在设摊“摸彩”，只见他手拿一个黑色的袋子，内装大小、形状、质量完全相同的白球20 只，且每一个球上都写有号码（120 号）和 1 只红球，规定：每次只摸一只球。摸前交 1 元钱且在 1 20 内写一个号码，摸到红球奖5元，摸到号码数与你写的号码相同奖10 元。（1）你认为该游戏对“摸彩”者有利吗？说明你的

30、理由。（2）若一个“摸彩”者多次摸奖后，他平均每次将获利或损失多少元？29、（本小题满分10 分）已知圆锥的底面半径为r 20cm，高 h=1520cm,现在有一只蚂蚁从底边上一点A 出发。在侧面上爬行一周又回到A点，求蚂蚁爬行的最短距离。文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6

31、 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5

32、ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文

33、档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3

34、W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L

35、5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W

36、3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3PNMCBAOyx30、

37、（本小题满分12 分）如图，平面直角坐标系中，四边形OABC 为矩形，点A、B的坐标分别为（6，0），（6，8）。动点 M、N分别从 O、B同时出发，以每秒1 个单位的速度运动。其中，点M沿 OA向终点 A运动，点 N沿 BC向终点 C运动。过点N作 NP BC，交 AC于 P，连结 MP。已知动点运动了x秒。（1）P点的坐标为（，）；（用含 x 的代数式表示）（2）试求MPA面积的最大值，并求此时x 的值。（3）请你探索：当x 为何值时，MPA 是一个等腰三角形？你发现了几种情况？写出你的研究成果。2009年中考全真模拟试卷（一）答案：一、1、C；2、C；3、D；4、A；5、C；6、B；7、

38、D；8、B；9、A；10、B；二、11、8；2、1x且1x；13、0.1:6.51:5.14:8.66；14、3.17或4.17；15、6；16、六；17、旋转中心和旋转角；18、9：30；19、4；20、5；三、21、原式=bab；当2,3 ba时，原式=324；22、如图，易算出AE=8米，由 AC=7米，可得 CE=1米，由比例可知：CH=1.5 米1 米，故影响采光。23、11，17，59；S=6n-1；24、（1）y=x2+2x+3；（2）x=1，M（1，4），（3）9；25、（1）相同点：甲台阶与乙台阶的各阶高度参差不齐，不同点：甲台阶各阶高度的极差比乙台阶小；（2）甲台阶，因为甲

39、台阶各阶高度的方差比乙台阶小；（3）使台阶的各阶高度的方差越小越好。26、（1）r=3；（2）3r 4；（3）r=4 或 5；（4）r 4 且 r 5；文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV

40、4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE1

41、0C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码

42、:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6

43、HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 Z

44、E10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档

45、编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W327、（1）a=110，b=90；提示：可由baa2016200055601020003100解得；（2）从表中

46、的信息可知：该农户每年新增林地亩数的增长率为30，则 2004 年林地的亩数为26（1+30）=33.8 亩，2005 年林地的亩数为33.8（1+30）=43.94 亩，故 2005 年的总收入为2000+43.94 110+33.8 90=8775.4 元。28、（1）P（摸到红球）=P（摸到同号球）=211；故没有利；（2）每次的平均收益为02142119)105(211，故每次平均损失214元。29、802cm；提示：由r=20cm，h=2015cm，可得母线l=80cm，而圆锥侧面展开后的扇形的弧长为cm40202，可求得圆锥侧面展开后的扇形的圆心角

47、为900，故最短距离为802cm。30、（）（6x,34x）;(2)设 MPA的面积为S，在 MPA中，MA=6 x，MA边上的高为34x，其中，0 x6.S=21（6x）34x=32(x2+6x)=32(x 3)2+6 S的最大值为6,此时 x=3.(3)延长交x 轴于，则有若x.3x=6,x=2;若，则62x，=34x，6 x 在 t 中，222(6 x)2=(6 2x)2+(34x)2x=43108若，35x，6x 35x=6x x=49综上所述，x=2，或 x=43108，或 x=49。文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U

48、4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8

49、Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5

50、J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP8U4J4C3W6 HV4S8Z1O3L5 ZE10C5J6Y9W3文档编码:CP

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