最新广东省深圳市宝安实验中学九年级中考数学模拟优秀名师资料.doc

广东省深圳市宝安实验中学九年级中考数学模拟中考试题8 1. ,6的绝对值是( ) 11(A) 6 (B) ,6 (C) (D) ,662. 据深圳特区报2月28日报告，2011年底我市机动车保有量为200.8万辆，汽车保有量排名全国第二。将数据200.8万保留三个有效数字，用科学记数法表示为( ) 6267(A) 2.008×10 (B) 2.01×10 (C) 2.01×10 (D) 0.201×10 3. 下列食品商标中，即是轴对称又是中心对称图形的是( ) (A) (B) (C) (D) 4. 下列运算正确的是( ) 32632522222(A) a?a,a (B) (a),a (C) (a，b)(a,b),a,b (D) (a，b),a，b 5. 根据深圳空气质量时报显示，2013年5月10日15时我市部分环境监测站“PM2.5的24小时滑动平均分指数“如下表所示: 监测站名称 盐田福田 南山 宝安 罗湖 龙岗 PM2.5 55 60 73 53 55 40 24小时滑动平均分指数 对于这组数据，下列说法中错误的是( ) (A) 平均数是56 (B) 众数是55 (C) 中位数是55 (D) 方差是7 6. 如图，在?ABC中，D、E分别是边AB、AC的中点，?B,50?，现将?ADE沿DE折叠，点A落在三角形所在的平面内的点A，则?BDA的度数为( ) 11(A) 50? (B) 60? (C) 70? (D) 80? 7. 小明在白纸上任意画一个锐角，他画的角在30?到60?之间的概率是( ) 1112(A) (B) (C) (D) 36238. 下列叙述正确的个数是( ) 222?相等的角是对顶角;?长度相等的弧是等弧;?若a,b，则a,b是确定事件;?一元二次方程xx1,0有两个不相等的实数根; (A) 1个 (B) 2个 (C) 3个 (D) 4个 9. 如图是一个圆形人工湖的示意图，弦AB是湖上的一座桥，已知桥AB长100m，测得圆周角?ACB,60?，则这个人工湖的直径AD为( ) Colorimetric tube 1 0 mL glass. 4, the analysis step preparation of the sample solution: precision weighing approximately 0.01 g1.0 g sample (accurate to 0.0001 g) in 1 . V2-determination of sampling volume. Unit ml (mI. ); M-quality of the sample, expressed in grams (g); The atomic weight of 55.84-Fe; 2-conversion factors. 6, precision under repeatability conditions to obtain the absolute value of the difference of two independent test results shall not exceed the arithmetical average of the 10%. Food additives sweet agent saccharin sodium, and sweet pigment, and acetyl sulfa acid potassium (Ann game honey, and coloring agent of test according to focus introduced anti-oxidant of detection (BHA, and BHT, and PG, and TBHQ), GB2760 GB/T5009.30, and GB/T5009.32, and GB/T5009.35, and food in the often using of anti-oxidant main has BHA, and BHT, and PG, and TBHQ tert-butyl hydroxy fennel ether (BHA) 2,6-II tert-butyl on cresol (BHT ) Of tert-butyl hydroxy anisole (BHA) 2,6-di-tert-butyl-p-cresol (BHT) testing in accordance with GB/T5009.30 vapor phase chromatography and thin-layer chromatography, this section focuses on Colorimetry. Principle 1, obtained by steam distillation of the sample. separate the BHT, methanol absorption, o-anisidine and sodium nitrite solution orange-red, extracted with chloroform, compared with standard sizing. 2, anhydrous calcium chloride reagent. Methanol. Chloroform. Methanol (50%). Sodium nitrite solution (3 g/l): keep in dark place. O-anisidine solution; weighing 125 mg o-anisidine in 50mL the second Brown volumetric flask, add 25mL methanol and shake to dissolve, and 50mg activated carbon, shake10032003(A) (B) (C) (D) 150m 1003mmm33210. 已知二次函数y,ax，bx，c(a?0)的图象如图所示，现有下列结论:?abc>0;?b2,4ac<0;?4a,2b，c<0;?b,2a;其中结论正确的是( ) (A) ? (B) ? (C) ? (D) ? 11. 观察下列图形及图形所对应的算式，根据你发现的规律计算:1，8，16，24，8n(n是正整数)的结果是( ) 2222 (A) (2n，1) (B) (2n,1) (C) (n，2) (D) n(第9题) (第10题) (第11题) 12. 如图，?ABC和?ADE都是等腰直角三角形，?BAC,?DAE,90?，四边形ACDE是平行四边形，连结CE?CE,BD;?ADC是等腰Rt?;?ADB交AD于F，连结BD交CE于点G，连结BE;下列结论中:,?AEB;?CD?AE,EF?CG;一定正确的结论有( ) (A) 1个 (B) 2个 (C) 3个 (D) 4个 2213. 因式分解:,3x，6xy,3y,_ m+n3m-n14. 如果单项式2xy与单项式xy是同类项，则mn,_ ky,(k,0)15. 如图，已知函数y,x，1的图象与x轴、y轴分别交于C、B两点，与双曲线交于A、D两点，x若BC,2AB，则k的值为_ 12y,x16. 如图，将抛物线平移得到抛物线m，抛物线m经过点A(,6，0)和原点O(0，0)，它的顶点为P，对312y,x称轴与抛物线交于点Q，则图中阴影部分的面积为_ 3(第12题) (第15题) (第16题) Colorimetric tube 1 0 mL glass. 4, the analysis step preparation of the sample solution: precision weighing approximately 0.01 g1.0 g sample (accurate to 0.0001 g) in 1 . V2-determination of sampling volume. Unit ml (mI. ); M-quality of the sample, expressed in grams (g); The atomic weight of 55.84-Fe; 2-conversion factors. 6, precision under repeatability conditions to obtain the absolute value of the difference of two independent test results shall not exceed the arithmetical average of the 10%. Food additives sweet agent saccharin sodium, and sweet pigment, and acetyl sulfa acid potassium (Ann game honey, and coloring agent of test according to focus introduced anti-oxidant of detection (BHA, and BHT, and PG, and TBHQ), GB2760 GB/T5009.30, and GB/T5009.32, and GB/T5009.35, and food in the often using of anti-oxidant main has BHA, and BHT, and PG, and TBHQ tert-butyl hydroxy fennel ether (BHA) 2,6-II tert-butyl on cresol (BHT ) Of tert-butyl hydroxy anisole (BHA) 2,6-di-tert-butyl-p-cresol (BHT) testing in accordance with GB/T5009.30 vapor phase chromatography and thin-layer chromatography, this section focuses on Colorimetry. Principle 1, obtained by steam distillation of the sample. separate the BHT, methanol absorption, o-anisidine and sodium nitrite solution orange-red, extracted with chloroform, compared with standard sizing. 2, anhydrous calcium chloride reagent. Methanol. Chloroform. Methanol (50%). Sodium nitrite solution (3 g/l): keep in dark place. O-anisidine solution; weighing 125 mg o-anisidine in 50mL the second Brown volumetric flask, add 25mL methanol and shake to dissolve, and 50mg activated carbon, shake12013,2017.计算: (,1)，(,),(3,),1,2sin60:2a,1a，2418.先化简，再求值:，其中a, 2,3(,),(,1)22aa,4a，4a,2a19.小敏为了解本市的空气质量情况，从环境监测网随机抽取了若干天的空气质量情况作为样本进行统计，绘制了如图所示的条形统计图和扇形统计图(部分信息未给出)( 请你根据图中提供的信息，解答下列问题: (1)计算被抽取的天数; (2)请补全条形统计图，并求扇形统计图中表示优的扇形的圆心角度数; (3)请估计该市这一年(365天)达到优和良的总天数( O的直径，弦DE垂直平分半径OA，C为垂足，DE=3，连接BD，过点E作EM?BD，交BA20.如图，AB是?的延长线于点M( (1)求?O的半径; (2)求证:EM是?O的切线; (3)若弦DF与直径AB相交于点P，当?APD=45?时，求图中阴影部分的面积( 21.一手机经销商计划购进某品牌的A型、B型、C型三款手机共60部，每款手机至少要购进8部，且恰好用完购机款61000元(设购进A型手机x部，B型手机y部(三款手机的进价和预售价如下表: 手机型号 A型 B型 C型 进 价(单位:元/部) 900 1200 1100 预售价(单位:元/部) 1200 1600 1300 (1)用含x，y的式子表示购进C型手机的部数; (2)求出y与x之间的函数关系式; Colorimetric tube 1 0 mL glass. 4, the analysis step preparation of the sample solution: precision weighing approximately 0.01 g1.0 g sample (accurate to 0.0001 g) in 1 . V2-determination of sampling volume. Unit ml (mI. ); M-quality of the sample, expressed in grams (g); The atomic weight of 55.84-Fe; 2-conversion factors. 6, precision under repeatability conditions to obtain the absolute value of the difference of two independent test results shall not exceed the arithmetical average of the 10%. Food additives sweet agent saccharin sodium, and sweet pigment, and acetyl sulfa acid potassium (Ann game honey, and coloring agent of test according to focus introduced anti-oxidant of detection (BHA, and BHT, and PG, and TBHQ), GB2760 GB/T5009.30, and GB/T5009.32, and GB/T5009.35, and food in the often using of anti-oxidant main has BHA, and BHT, and PG, and TBHQ tert-butyl hydroxy fennel ether (BHA) 2,6-II tert-butyl on cresol (BHT ) Of tert-butyl hydroxy anisole (BHA) 2,6-di-tert-butyl-p-cresol (BHT) testing in accordance with GB/T5009.30 vapor phase chromatography and thin-layer chromatography, this section focuses on Colorimetry. Principle 1, obtained by steam distillation of the sample. separate the BHT, methanol absorption, o-anisidine and sodium nitrite solution orange-red, extracted with chloroform, compared with standard sizing. 2, anhydrous calcium chloride reagent. Methanol. Chloroform. Methanol (50%). Sodium nitrite solution (3 g/l): keep in dark place. O-anisidine solution; weighing 125 mg o-anisidine in 50mL the second Brown volumetric flask, add 25mL methanol and shake to dissolve, and 50mg activated carbon, shake(3)假设所购进手机全部售出，综合考虑各种因素，该手机经销商在购销这批手机过程中需另外支出各种费用共1500元( ?求出预估利润P(元)与x(部)的函数关系式;(注:预估利润P=预售总额-购机款-各种费用) ?求出预估利润的最大值，并写出此时购进三款手机各多少部( 222.如图，抛物线与x轴交于A(x，0)，B(x，0)两点，且x,x，与y轴交于点C(0，4)，其中x、x是方程x,1212122x,8,0的两个根; (1)求这条抛物线的表达式; (2)点P是线段AB上的动点，过点P作PE?AC，交BC于点E，连接CP，当?CPE面积最大时，求点P的坐标; 23.如图，在直角坐标系中，梯形ABCD的底边AB在x轴上，底边CD的端点D在y轴上(直线CB的表达式为416y,x，点A、D的坐标分别为(-4，0)，(0，4)(动点P自A点出发，在AB上匀速运行(动点Q自点33B出发，在折线BCD上匀速运行，速度均为每秒1个单位(当其中一个动点到达终点时，它们同时停止运动(设点P运动t(秒)时，?OPQ的面积为s(不能构成?OPQ的动点除外)( (1)求出点B、C的坐标; (2)求s随t变化的函数关系式; (3)当t为何值时s有最大值,并求出最大值( Colorimetric tube 1 0 mL glass. 4, the analysis step preparation of the sample solution: precision weighing approximately 0.01 g1.0 g sample (accurate to 0.0001 g) in 1 . V2-determination of sampling volume. Unit ml (mI. ); M-quality of the sample, expressed in grams (g); The atomic weight of 55.84-Fe; 2-conversion factors. 6, precision under repeatability conditions to obtain the absolute value of the difference of two independent test results shall not exceed the arithmetical average of the 10%. Food additives sweet agent saccharin sodium, and sweet pigment, and acetyl sulfa acid potassium (Ann game honey, and coloring agent of test according to focus introduced anti-oxidant of detection (BHA, and BHT, and PG, and TBHQ), GB2760 GB/T5009.30, and GB/T5009.32, and GB/T5009.35, and food in the often using of anti-oxidant main has BHA, and BHT, and PG, and TBHQ tert-butyl hydroxy fennel ether (BHA) 2,6-II tert-butyl on cresol (BHT ) Of tert-butyl hydroxy anisole (BHA) 2,6-di-tert-butyl-p-cresol (BHT) testing in accordance with GB/T5009.30 vapor phase chromatography and thin-layer chromatography, this section focuses on Colorimetry. Principle 1, obtained by steam distillation of the sample. separate the BHT, methanol absorption, o-anisidine and sodium nitrite solution orange-red, extracted with chloroform, compared with standard sizing. 2, anhydrous calcium chloride reagent. Methanol. Chloroform. Methanol (50%). Sodium nitrite solution (3 g/l): keep in dark place. O-anisidine solution; weighing 125 mg o-anisidine in 50mL the second Brown volumetric flask, add 25mL methanol and shake to dissolve, and 50mg activated carbon, shake2013数学中考模拟卷(一) 1. ,6的绝对值是( ) 11(A) 6 (B) ,6 (C) (D) ,662. 据深圳特区报2月28日报告，2011年底我市机动车保有量为200.8万辆，汽车保有量排名全国第二。将数据200.8万保留三个有效数字，用科学记数法表示为( ) 6267(A) 2.008×10 (B) 2.01×10 (C) 2.01×10 (D) 0.201×10 3. 下列食品商标中，即是轴对称又是中心对称图形的是( ) (A) (B) (C) (D) 4. 下列运算正确的是( ) 32632522222(A) a?a,a (B) (a),a (C) (a，b)(a,b),a,b (D) (a，b),a，b 5. 根据深圳空气质量时报显示，2013年5月10日15时我市部分环境监测站“PM2.5的24小时滑动平均分指数“如下表所示: 监测站名称 福田 南山 宝安 罗湖 龙岗 盐田 PM2.5 55 60 73 53 55 40 24小时滑动平均分指数 对于这组数据，下列说法中错误的是( ) (A) 平均数是56 (B) 众数是55 (C) 中位数是55 (D) 方差是7 6. 如图，在?ABC中，D、E分别是边AB、AC的中点，?B,50?，现将?ADE沿DE折叠，点A落在三角形所在的平面内的点A，则?BDA的度数为( ) 11(A) 50? (B) 60? (C) 70? (D) 80? 7. 小明在白纸上任意画一个锐角，他画的角在30?到60?之间的概率是( ) 1112(A) (B) (C) (D) 36238. 下列叙述正确的个数是( )222?相等的角是对顶角;?长度相等的弧是等弧;?若a,b，则a,b是确定事件;?一元二次方程xx1,0有两个不相等的实数根; (A) 1个 (B) 2个 (C) 3个 (D) 4个 9. 如图是一个圆形人工湖的示意图，弦AB是湖上的一座桥，已知桥AB长100m，测得圆周角?ACB,60?，则这个人工湖的直径AD为( ) 100320031003mmm(A) (B) (C) (D) 150m 33Colorimetric tube 1 0 mL glass. 4, the analysis step preparation of the sample solution: precision weighing approximately 0.01 g1.0 g sample (accurate to 0.0001 g) in 1 . V2-determination of sampling volume. Unit ml (mI. ); M-quality of the sample, expressed in grams (g); The atomic weight of 55.84-Fe; 2-conversion factors. 6, precision under repeatability conditions to obtain the absolute value of the difference of two independent test results shall not exceed the arithmetical average of the 10%. Food additives sweet agent saccharin sodium, and sweet pigment, and acetyl sulfa acid potassium (Ann game honey, and coloring agent of test according to focus introduced anti-oxidant of detection (BHA, and BHT, and PG, and TBHQ), GB2760 GB/T5009.30, and GB/T5009.32, and GB/T5009.35, and food in the often using of anti-oxidant main has BHA, and BHT, and PG, and TBHQ tert-butyl hydroxy fennel ether (BHA) 2,6-II tert-butyl on cresol (BHT ) Of tert-butyl hydroxy anisole (BHA) 2,6-di-tert-butyl-p-cresol (BHT) testing in accordance with GB/T5009.30 vapor phase chromatography and thin-layer chromatography, this section focuses on Colorimetry. Principle 1, obtained by steam distillation of the sample. separate the BHT, methanol absorption, o-anisidine and sodium nitrite solution orange-red, extracted with chloroform, compared with standard sizing. 2, anhydrous calcium chloride reagent. Methanol. Chloroform. Methanol (50%). Sodium nitrite solution (3 g/l): keep in dark place. O-anisidine solution; weighing 125 mg o-anisidine in 50mL the second Brown volumetric flask, add 25mL methanol and shake to dissolve, and 50mg activated carbon, shake2210. 已知二次函数y,ax，bx，c(a?0)的图象如图所示，现有下列结论:?abc>0;?b,4ac<0;?4a,2b，c<0;?b,2a;其中结论正确的是( ) (A) ? (B) ? (C) ? (D) ? 当a0时，抛物线开口向上，并且向上方无限伸展。当a0时，抛物线开口向下，并且向下方无限伸展。11. 观察下列图形及图形所对应的算式，根据你发现的规律计算:1，8，16，24，8n(n是正整数)的结果是1.圆的定义：( )用表格的形式写出来 2222 (A) (2n，1) (B) (2n,1) (C) (n，2) (D) n(第9题) (第10题) (第11题) 2. 俯角：当从高处观测低处的目标时，视线与水平线所成的锐角称为俯角12. 如图，?ABC和?ADE都是等腰直角三角形，?BAC,?DAE,90?，四边形ACDE是平行四边形，连结CE(5）切线的判定定理: 经过半径的外端并且垂直于半径的直线是圆的切线.交AD于F，连结BD交CE于点G，连结BE;下列结论中:?CE,BD;?ADC是等腰Rt?;?ADB,?AEB;?CD?AE,EF?CG;一定正确的结论有( ) 二特殊角的三角函数值(C) 3个 (D) 4个 (A) 1个 (B) 2个104.305.6加与减（二）2 P57-602213. 因式分解:,3x，6xy,3y,_ m+n3m-n14. 如果单项式2xy与单项式xy是同类项，则mn,_ ky,(k,0)15. 如图，已知函数y,x，1的图象与x轴、y轴分别交于C、B两点，与双曲线交于A、D两点，x若BC,2AB，则k的值为_ 初中阶段，我们只学习直角三角形中，A是锐角的正切；12y,x16. 如图，将抛物线平移得到抛物线m，抛物线m经过点A(,6，0)和原点O(0，0)，它的顶点为P，对312y,x称轴与抛物线交于点Q，则图中阴影部分的面积为_ 3>0 <=> 抛物线与x轴有2个交点；（2）圆是轴对称图形，直径所在的直线是它的对称轴，圆有无数条对称轴。圆是中心对称图形，对称中心为圆心。(第12题) (第15题) (第16题) tanA没有单位，它表示一个比值，即直角三角形中A的对边与邻边的比；Colorimetric tube 1 0 mL glass. 4, the analysis step preparation of the sample solution: precision weighing approximately 0.01 g1.0 g sample (accurate to 0.0001 g) in 1 . V2-determination of sampling volume. Unit ml (mI. ); M-quality of the sample, expressed in grams (g); The atomic weight of 55.84-Fe; 2-conversion factors. 6, precision under repeatability conditions to obtain the absolute value of the difference of two independent test results shall not exceed the arithmetical average of the 10%. Food additives sweet agent saccharin sodium, and sweet pigment, and acetyl sulfa acid potassium (Ann game honey, and coloring agent of test according to focus introduced anti-oxidant of detection (BHA, and BHT, and PG, and TBHQ), GB2760 GB/T5009.30, and GB/T5009.32, and GB/T5009.35, and food in the often using of anti-oxidant main has BHA, and BHT, and PG, and TBHQ tert-butyl hydroxy fennel ether (BHA) 2,6-II tert-butyl on cresol (BHT ) Of tert-butyl hydroxy anisole (BHA) 2,6-di-tert-butyl-p-cresol (BHT) testing in accordance with GB/T5009.30 vapor phase chromatography and thin-layer chromatography, this section focuses on Colorimetry. Principle 1, obtained by steam distillation of the sample. separate the BHT, methanol absorption, o-anisidine and sodium nitrite solution orange-red, extracted with chloroform, compared with standard sizing. 2, anhydrous calcium chloride reagent. Methanol. Chloroform. Methanol (50%). Sodium nitrite solution (3 g/l): keep in dark place. O-anisidine solution; weighing 125 mg o-anisidine in 50mL the second Brown volumetric flask, add 25mL methanol and shake to dissolve, and 50mg activated carbon, shake