2022年安徽省安庆市九年级数学中考二模试题 .pdf

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1、2010 年安庆市初三二模数学试题注意事项：本卷共八大题，计23 小题，满分150 分考试时间120 分钟一、选择题（本题共10 小题，每小题4分，满分40 分）每小题都给出代号为A，B，C，D 的四个选项，其中只有一个是正确的，请把正确选项的代号写在题后的括号内，每一小题；选对得4 分，不选、选错或选出的代号超过一个的（不论是否写在括号内）一律得0 分1.兰兰家的冰箱冷藏室温度是5 C，冷冻室温度是2 C，则她家冰箱冷冻室温度比冷藏室温度低（）（A）3 C（B）3 C（C）7 C（D）7 C2.下列运算正确的是（）（A）93（B）1122（C）236m nmng（D）623aaa3.保护水资

2、源，人人有责，我国是缺水国家，目前可利用淡水资源总量仅约为899000亿立方米，899000亿用科学记数法表示为（）（A）138.9910（B）140.899 10（C）128.9910（D）1189.9104.AB、两条弧长相等，A弧所对的圆心角是B弧所对圆心角的一半，则A弧所在圆的半径Ar与B弧所圆的半径Br之间的关系是（）（A）12ABrr（B）ABrr（C）2ABrr（D）无法确定5.若方程2220 xx的两根为1x、2x，则1211xx的值为()（A）2（B）12（C）2（D）126.1Oe和2Oe的半径分别是1和2，12O O的长是不等式11 12x的最大整数解，则1Oe和2Oe的

3、位置关系是（）（A）外切（B）.相切（C）.相交（D）.外离7.已知小敏家距学校4km，小飞家距小敏家3km。若小飞家距学校距离为xkm，则x满足（）（A）5x（B）17x（C）34x（D）17x8.已知反比例函数12myx的图象上两点11A xy，22B xy，。当120 xx时，有12yy，,则m的取值范围是（）（A）0m（B）0m（C）12m（D）12m9.“跳绳”是我市今年初中毕业生升学体育考试选考项目之一，某校积极组织学生训练，最近抽查了部分学生每分钟跳绳次数（单位：次）。将所得数据统计如下（每组只含最低值，不含最高值）：根据以上图表、信息提供的信息，则样本的中位数落在（）（A）第二

4、组（B）第三组（C）第四组（D）第五组10.在ABC中，若1a，2b，12S，则ABC的形状是（）（A）等腰三角形（B）等腰三角形或钝角三角形（C）等边三角形或钝角三角形（D）等腰直角三角形或钝角三角形二、填空题（本题共4 小题，每小题5 分，满分20 分）11.计算：327188_12.某校美术兴趣班第一小组6名同学的年龄（单位：岁）如下:13，14，16，a，12，15，他们的平均年龄是14，则这组数据的众数是13.国家为九年义务教育期间的学生实行“两免一补”政策，下表是某校国家免费提供教科书补助的情况。设七年级的人数为x，八年级的人数为y，依题意列出方程组为14.如图，正方形OEFG和正

5、方形ABCD的是位似图形，若点A的坐标为2 2，位似中心的坐标是4 0，则点 F 的坐标为.三、（本题共2 小题，每小题8 分，满分16 分）15.化简22222ababbaaaba一5070 7090 90110 110130 130150 150170 二三四五六分组人数3987一二0020三四0026五0016六（第 9 题图表）yxA B C D F E G O（第 14 题图）每人免费补助金额（元）人数（人）免费补助总金额（元）七八九合计105089500110905030015000文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:C

6、S10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7

7、G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 Z

8、U3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A

9、10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T

10、2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L

11、10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档

12、编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G1文档编码:CS10L10J5H10T2 HK3T1A10M4R9 ZU3V5A8W7G116.已知由若干个小立方板搭成的几何体的主视图与左视图如图所示，请画出几何体

13、的俯视图。四、（本题共2 小题，每小题8 分，满分16 分）17在坡度为3 3:的斜坡前6米处有一高度为10米的树，当太阳照射的倾斜角为45时，求斜坡上的树影长。18如图，在四边形ABCD中，E是AB上一点，ADE与BCE均是等边三角形，AB、BC、CD、DA的中点分别为P、Q、M、N，试判断四边形PQMN的的形状，并证明。6m（第 17 题图）A B C D N M P Q E（第 18 题图）主视图左视图（第 16 题图）文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:

14、CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U

15、5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:

16、CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U

17、5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:

18、CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U

19、5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:

20、CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3五、（本大题共2 小题，每小题10 分，满分20 分）19在一次运输任务中，一辆汽车将一批货物从甲地运往乙地，到达乙地卸贷后，休息一段时间后返回。设汽车从甲地出发x小时，汽车距甲地的距离为y米，y与x的函数图象如图所示。根据图象信息，解答下列问题（1）若设汽车距乙地距离为1y，画出1y与x的图象。（2）若设汽车的路程为2y，画出2y与y的图象。20 某通讯公司力足技术创新，促进产业的迅速发展，现开发了一种新型通讯产品投放市场。根据规划，第一年投入资金600万元，第二年比第一年减少31，第三年比第二年减少21。该产品第一年收入

21、资金约为400万元，公司计划三年内不仅要将投入的总资金全部收回，还要盈利31。要实现这一目标，该产品收入的年平均增长率约是多少？（精确到0.1，133.61）六、（本题满分12 分）0 1 2 y/千米120 x/小时6 5 4 3（第 19 题图）文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y

22、5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B

23、2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y

24、5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B

25、2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y

26、5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B

27、2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J321同时抛掷两枚均匀的骰子，骰子个面上的点数分别是1、2、L、6抛出的点数之和为x，概率为p。(1)当112p

28、时，求x值。（2）若将所有的x，p记作点（x，p），则有11个点，这些点是否关于某一直线对称，若对称，写出对称轴方程。（3）这些点是否在同一抛物线上：（填“是”或“否”）。七、（本题满分12 分）22三角形角平分线交点或三角形内切圆的圆心都称为三角形的内心。按此说法，四边形的四个角平分线交于一点，我们也称为“四边形的内心”。（1）试举出一个有内心的四边形。（2）探究：对于任意四边形ABCD，如果有内心，则四边形的边长具备何种条件？（3）探究：腰长为2的等腰直角形ABC，90C，O是ABC的内心，若沿图中虚线剪开，O仍然是四边形ABDE的内心，此时裁剪线有多少条？为什么？（4）问题（3）中，O

29、是四边形ABDE内心，且四边形ABDE是等腰梯形，求DE的长？A B C D B E D A C（第 22 题图）文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编

30、码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G

31、1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编

32、码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G

33、1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编

34、码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G

35、1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3八、（本题满分14 分）23、小明每天早晨从家里出发匀速步行去上学。他离家距离S（千米）与时间t（分钟）之间的函数关系如图1 所示。（1）小明从家要走千米到达学校，需花费分钟。（2）今天小明象往常一样准时出发去上学，走了一半的路程突然发现作业忘带

36、。他立即打电话通知妈妈送作业（打电话时间忽略不计）。妈妈立即骑车按小明上学的路线追赶小明，同时小明往回走迎接妈妈。2 分钟后两人碰面，妈妈决定骑车送小明去学校。妈妈骑车的速度是多少?小明能否和往常一样按时到达学校？（填：“能”或者“不能”）请在图 2 中画出小明离家距离S 和时间 t 的函数关系的图像。（对画出的图像用数据做适当的标注）直接写出图2 中离家距离S 与时间 t 的函数关系式。如果小明站在原地不动，等待妈妈送作业本，再由妈妈骑车送他去学校，和往常相比能否按时到校？（填：“能”或者“不能”），并在图 3 中画出小明离家距离S 和时间 t 的函数关系的图像。文档编码:CZ7I1O2I8

37、Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8

38、B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8

39、Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8

40、B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8

41、Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8

42、B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8

43、Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J32010 年安庆市初三二模数学试题参考答案及评分标准1如果学生的解法与下面提供的参考解答不同，凡正确的，一律记满分；若某一步出现错误，则可参照该题的评分意见进行评分。2评阅试卷，不要因解答中出现错误而中断对该题的评阅，当解答中某一步出现错误，影响了后继部分，但该步后的解答未改变这一道题的内容和难度，在未发生新的错误前，可视影响的程度决定后面部分的记分，这时原则上不应超过后面部分应给分数

44、之半；明显笔误，可酌情少扣；如果有严重概念性错误的，不记分；在一道题解答过程中。对发生第二次错误起的部分，不记分。3涉及计算过程，允许合理省略非关键性步骤。4以下解答右端所注分数，表示学生正确做到这一步应得的累加分数。一、选择题（本题共10 小题，每小题4分，满分40 分）题号1 2 3 4 5 6 7 8 9 10 答案C B A C B A B D C D 二、填空题（本大题共4 小题，每小题5 分，满分20 分）11.12.1413.3001050110901500089500 xyxy14.8 4，三、（本大题共2 小题，每小题8 分，满分16 分）15解：原式2ababa aba（4

45、 分）2abaa abab（6 分）1ab（8 分）16.（每个图形得4分）四、（本题共2 小题，每小题8 分，满分16 分）（第 16 题答图）A E 文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G

46、1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编

47、码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G

48、1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编

49、码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G

50、1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编码:CZ7I1O2I8Y5 HG1V7G1U5X5 ZX3B8B2V8J3文档编