2015年四川省南充市中考数学试题及解析.pdf

《2015年四川省南充市中考数学试题及解析.pdf》由会员分享，可在线阅读，更多相关《2015年四川省南充市中考数学试题及解析.pdf（25页珍藏版）》请在淘文阁 - 分享文档赚钱的网站上搜索。

1、课件园http:/第1页（共 25页）2015 年四川省南充市中考数学试卷一、选择题（本大题共10 个小题，每小题3 分，共 30 分）每小题都有代号A、B、C、D四个答案选项，其中只有一个是正确的1（3 分）（2015?南充）计算3+（3）的结果是（）A6B6 C1D02（3 分）（2015?南充）下列运算正确的是（）A3x 2x=x B2x?3x=6x C（2x）2=4x D6x 2x=3x 3（3 分）（2015?南充）如图是某工厂要设计生产的正六棱柱形密封罐的立体图形，它的主视图是（）ABCD4（3 分）（2015?南充）学校机房今年和去年共购置了100 台计算机，已知今年购置计算机数

2、量是去年购置计算机数量的3倍，今年购置计算机的数量是（）A25 台B50 台C75台D100 台5（3 分）（2015?南充）如图，一艘海轮位于灯塔P的北偏东55 方向，距离灯塔2 海里的点 A 处，如果海轮沿正南方向航行到灯塔的正东方向，海轮航行的距离AB 长是（）A2 海里B2sin55 海里C2cos55 海里D2tan55 海里6（3 分）（2015?南充）若mn，下列不等式不一定成立的是（）Am+2 n+2 B2m2n CDm2n2课件园http:/第2页（共 25页）7（3 分）（2015?南充）如图是一个可以自由转动的正六边形转盘，其中三个正三角形涂有阴影，转动指针，指针落在有阴

3、影的区域内的概率为a，如果投掷一枚硬币，正面向上的概率为 b，关于 a、b 大小的正确判断是（）Aab Ba=b Ca b D不能判断8（3 分）（2015?南充）如图，PA和 PB 是O 的切线，点A 和 B 的切点，AC 是O 的直径，已知 P=40，则 ACB 的大小是（）A40B60C70D809（3分）（2015?南充）如图，菱形ABCD 的周长为8cm，高 AE 长为cm，则对角线AC长和 BD 长之比为（）A1：2 B1：3 C1：D1：10（3 分）（2015?南充）关于x 的一元二次方程x2+2mx+2n=0 有两个整数根且乘积为正，关于 y 的一元二次方程y2+2ny+2m

4、=0 同样也有两个整数根且乘积为正，给出三个结论：这两个方程的根都负根；（m 1）2+（n1）2 2；1 2m2n 1，其中正确结论的个数是（）A0 个B1 个C2 个D3 个二、填空题（本大题共6 个小题，每小题3 分，共 18 分）11（3 分）（2015?南充）计算2sin45 的结果是12（3 分）（2015?南充）不等式1 的解集是13（3 分）（2015?南充）如图，点 D 在ABC 边 BC 的延长线上，CE 平分 ACD，A=80 ，B=40，则 ACE 的大小是度文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2

5、HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L

6、4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2

7、HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L

8、4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2

9、HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L

10、4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2

11、HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1课件园http:/第3页（共 25页）14（3 分）（2015?南充）从分别标有数3，2，1，0，1，2，3 的七张卡片中，随机抽取一张，所抽卡片上数的绝对值小于2 的概率是15（3 分）（2015?南充）已知关于x，y 的二元一次方程组的解互为相反数，则 k 的值是16（3 分）（2015?南充）如图，正方形ABCD 的边长为1，以 AB 为直径作半圆，点P 是CD 中点，BP 与半圆交于点Q，连结 PQ，给出如下结论：DQ=1；=；SPDQ=；cosADQ=，其中正

12、确结论是（填写序号）三、解答题（本大题共9 个小题，共72 分）17（6 分）（2015?南充）计算：（a+2）?18（6 分）（2015?南充）某学校要了解学生上学交通情况，选取九年级全体学生进行调查，根据调查结果，画出扇形统计图（如图），图中“公交车”对应的扇形圆心角为60，“自行车”对应的扇形圆心角为120，已知九年级乘公交车上学的人数为50 人（1）九年级学业生中，骑自行车和乘公交车上学哪个更多？多多少人？（2）如果全校有学生2000 人，学校准备的400 个自行车停车位是否足够？19（8 分）（2015?南充）如图，ABC 中，AB=AC，AD BC，CEAB，AE=CE 求证：（1

13、）AEF CEB；文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z

14、4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT

15、6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z

16、4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT

17、6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z

18、4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT

19、6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1课件园http:/第4页（共 25页）（2）AF=2CD 20（8 分）（2015?南充）已知关于x 的一元二次方程（x1）（x4）=p2，p 为实数（1）求证：方程有两个不相等的实数根；（2）p 为何值时，方程有整数解（直接写出三个，不需说明理由）21（8 分）（2015?南充）反比例函数y=（k 0）与一次函数y=mx+b（m 0）交于

20、点 A（1，2k 1）（1）求反比例函数的解析式；（2）若一次函数与x 轴交于点B，且 AOB 的面积为3，求一次函数的解析式22（8 分）（2015?南充）如图，矩形纸片ABCD，将 AMP 和BPQ 分别沿 PM 和 PQ 折叠（APAM），点 A 和点 B 都与点 E 重合；再将 CQD 沿 DQ 折叠，点C 落在线段 EQ上点 F 处（1）判断 AMP，BPQ，CQD 和FDM 中有哪几对相似三角形？（不需说明理由）（2）如果 AM=1，sinDMF=，求 AB 的长23（8 分）（2015?南充）某工厂在生产过程中每消耗1 万度电可以产生产值5.5 万元，电力公司规定，该工厂每月用电

21、量不得超过16 万度，月用电量不超过4 万度时，单价是1 万元/万度；超过 4 万度时，超过部分电量单价将按用电量进行调查，电价 y 与月用电量x 的函数关系可用如图来表示（效益=产值用电量 电价）（1）设工厂的月效益为z（万元），写出 z 与月用电量x（万度）之间的函数关系式，并写出自变量的取值范围；（2）求工厂最大月效益文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2

22、HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L

23、4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2

24、HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L

25、4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2

26、HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L

27、4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1课件园http:/第5页（共 25

28、页）24（10 分）（2015?南充）如图，点P是正方形 ABCD 内一点，点P到点 A、B 和 D 的距离分别为1，2，ADP 沿点 A 旋转至 ABP，连结 PP，并延长AP 与 BC 相交于点 Q（1）求证：APP是等腰直角三角形；（2）求 BPQ 的大小；（3）求 CQ 的长25（10 分）（2015?南充）已知抛物线y=x2+bx+c 与 x 轴交于点A（m2，0）和 B（2m+1，0）（点 A 在点 B 的左侧），与 y 轴相交于点C，顶点为P，对称轴为l：x=1（1）求抛物线解析式（2）直线 y=kx+2（k 0）与抛物线相交于两点M（x1，y1），N（x2，y2）（x1x2），

29、当|x1x2|最小时，求抛物线与直线的交点M 与 N 的坐标（3）首尾顺次连接点O、B、P、C 构成多边形的周长为L，若线段 OB 在 x 轴上移动，求L 最小值时点O，B 移动后的坐标及L 的最小值文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1

30、文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5

31、N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1

32、文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5

33、N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1

34、文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5

35、N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1课件园http:/第6页（共 25页）2015 年四川省南充市中考数学试卷参考答案与试题解析一、选择题（本大题共10 个小题，每小题3 分，共 30 分）每小题

36、都有代号A、B、C、D四个答案选项，其中只有一个是正确的1（3 分）（2015?南充）计算3+（3）的结果是（）A6B6 C1D0考点：有 理数的加法分析：根 据有理数的加法运算法则计算即可得解解答：解：3 与 3 互为相反数，且互为相反数的两数和为0 3+（3）=0故选 D点评：本 题考查了有理数的加法运算，是基础题，熟记运算法则是解题的关键2（3 分）（2015?南充）下列运算正确的是（）A3x 2x=x B2x?3x=6x C（2x）2=4x D6x 2x=3x 考点：整 式的除法；合并同类项；幂的乘方与积的乘方；单项式乘单项式分析：根 据同类项、整式的乘法、幂的乘方和整式的除法计算即可

37、解答：解：A、3x2x=x，正确；B、2x?3x=6x2，错误；C、（2x）2=4x2，错误；D、6x 2x=3，错误；故选 A点评：此 题考查同类项、整式的乘法、幂的乘方和整式的除法，关键是根据法则计算3（3 分）（2015?南充）如图是某工厂要设计生产的正六棱柱形密封罐的立体图形，它的主视图是（）ABCD考点：简 单几何体的三视图分析：主 视图、左视图、俯视图是分别从物体正面、左面和上面看，所得到的图形文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I

38、2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J

39、6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I

40、2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J

41、6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I

42、2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J

43、6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I

44、2 HK5N2X1W4A5 ZT6P5J6L4B1课件园http:/第7页（共 25页）解答：解：根据主视图的定义，可得它的主视图为：，故选：A点评：本 题考查三视图的有关知识，本题只要清楚了解各个几何体的三视图即可求解4（3 分）（2015?南充）学校机房今年和去年共购置了100 台计算机，已知今年购置计算机数量是去年购置计算机数量的3倍，今年购置计算机的数量是（）A25 台B50 台C75台D100 台考点：一 元一次方程的应用分析：设 今年购置计算机的数量是x 台，根据今年购置计算机数量是去年购置计算机数量的3 倍列出方程解得即可解答：解：设今年购置计算机的数量是x 台，去年购置计算机的

45、数量是（100 x）台，根据题意可得：x=3（100 x），解得：x=75故选 C点评：此 题考查一元一次方程的应用，关键是根据今年购置计算机数量是去年购置计算机数量的 3 倍列出方程5（3 分）（2015?南充）如图，一艘海轮位于灯塔P的北偏东55 方向，距离灯塔2 海里的点 A 处，如果海轮沿正南方向航行到灯塔的正东方向，海轮航行的距离AB 长是（）A2 海里B2sin55 海里C2cos55 海里D2tan55 海里考点：解 直角三角形的应用-方向角问题分析：首 先由方向角的定义及已知条件得出NPA=55，AP=2 海里，ABP=90 ，再由AB NP，根据平行线的性质得出A=NPA=5

46、5 然后解Rt ABP，得出AB=AP?cosA=2cos55 海里解答：解：如图，由题意可知NPA=55，AP=2 海里，ABP=90 ABNP，A=NPA=55 在 RtABP 中，ABP=90 ，A=55 ，AP=2 海里，AB=AP?cosA=2cos55 海里故选 C文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文

47、档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N

48、2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文

49、档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N

50、2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文档编码:CV6Z1Z4M9I2 HK5N2X1W4A5 ZT6P5J6L4B1文