最新宁波地区中考数学模拟试卷优秀名师资料.doc
《最新宁波地区中考数学模拟试卷优秀名师资料.doc》由会员分享,可在线阅读,更多相关《最新宁波地区中考数学模拟试卷优秀名师资料.doc(29页珍藏版)》请在三一文库上搜索。
1、2012年宁波地区中考数学模拟试卷宁波地区2012年中考数学模拟试卷 注意事项:本试卷共6页,全卷满分120分,考试时间为120分钟,考生答题全部答在答题卷上,答在本试卷上无效( 一、选择题(本大题共12小题,每小题3分,共36分,在每小题所给出的四个选项中,恰有一项是符合题目要求的,请将正确的选项的字母代号填涂在答题卷(相应位置上) (1(,2的绝对值等于 ( ) 1 1 A(2 B( C(,2 D(, 222. 在第六次全国人口普查中,宁波市常住人口约为760万人,其中鄞州区的人口约占18%(则鄞州区人口用科学记数法表示约为 ( ) 65 6 3 A(0.136810人 B.1.36810
2、人C(1.36810人 D(1.3610万人 3(下列图形中既是轴对称图形又是中心对称图形的是 ( ) (A. B. C . D. 12、一元二次方程的根( ) 4xx,,,041111A、 B、 C、xx,22, D、 xx,xx,xx,,1212121222225(一条葡萄藤上结有五串葡萄,每串葡萄的粒数如图所示(单位:粒)(则这组数据的中位数为 ( ) A(37 B(32 C(35 D(33.8 6(在平面直角坐标系中,已知点A(,1,0)和B(1,2),连接AB,平移线段AB得到线段AB(若点A的对应点A的坐标为(3,,1),则点B的对应点B的坐标为 ( ) 1111A(5,3) B(
3、5,1) C(,1,3) D(,1,1) 7(已知圆柱的底面直径为4cm,高为5cm,则圆柱的侧面积是 ( ) 2 22 210cm A( B(10兀cm C(20兀cm D(40 兀cm 28.如图,点A的坐标为(,,0),点B在直线y=x上运动,当线段AB最短时点B的坐为 y C 1122B l 2(A)(,,,) (B)(,,,) 1 222222(C)(,) (D)(0,0) ,56 O 22A x l 1A B 9(如图,直线l?l,以直线l上的点A为圆心、适当长为半径画弧,分别交直线l、l于12112 点B、C,连接AC、BC(若?ABC,56,则?1, ( ) A(36 B(68
4、 C(72 D(78 accident and the responsibility of leadership, such as concerning administrative sanctions should be dealt with by the personnel Department of the company. (3) personal injury accident occurs, the direct punishment 500-1000, who is directly responsible for the accident responsibility, giv
5、e notice of criticism and 50-100 economic sanctions against them. (4) to conceal the accident, reported without undue delay or false, to inform the administrative leadership of the criticism, resulting in serious consequences, the pursuit of leadership, along with 500-1000 punishment. (5) significan
6、t near miss should be attempted as the case of responsible for the accident and construction team injuries accident penalty provisions, mutatis mutandis. Eight, should perform in the construction standards and specifications, serial number a 1 GB3323-2005 steel fusion welded butt joints, welding eng
7、ineering-Ray lighting and quality rating of 2 GB11345-89 steel welds manual methods of ultrasonic inspection and testing results for grade 3 GB50236-2002 industrial pipe welding engineering code for construction and acceptance of field equipment 4 HGJ222-92 technical specification for welding of alu
8、minium and its alloys 5 low temperature steel welding procedure 6 SH3525-2004 petrochemical JB/ T4708-2000 of welding procedure qualification for steel pressure vessels 7 JB/4709-2000 8 JB4730-2005 pressure vessel welding procedures of steel pressure vessel NDT 9 JB/T4744-2000 steel pressure vessel
9、products mechanical properties test of welded plate II, mechanical equipment installation engineering 1 GB150-98 2 GB50128-2005 vertical cylindrical steel pressure vessel steel welded specification for construction and acceptance of oil tank 3 JB/ T4735-1997 steel welded atmospheric pressure vessel
10、4 GB50231-2009 mechanical equipment installation engineering construction and acceptance specification for 5 GB50275-98 compressor, fan 1110.对于非零的两个实数、,规定.若则的值为( ) ax1(1)1,,,xbab,ba131A. B. 1 C. D. ,222111.平面直角坐标系中,已知点O(0,0)、A(0,2)、B(1,0),点P是反比例函数图 象y,x上的一个动点,过点P作PQ?x轴,垂足为点Q(若以点O、P、Q为顶点的三角形与?OAB相似,
11、则相应的点P共有 ( ) A(1个 B(2个 C(3个 D(4个 12.图?是一瓷砖的图案,用这种瓷砖铺设地面,图? 铺成了一个22的近似正方形,其中完整菱形共有 5个;若铺成33的近似正方形图案?,其中完整 的菱形有13个;铺成44的近似正方形图案?,其中完整的菱形有25个;如此下去,可铺成一个的近似正方形图案.当得到完整的菱形共221个时,n的值为( ) nn,A. 12 B.11 C.10 D.9 二、细心填一填(本大题共6小题,每小题3分,满分18分( 请将答案填写在答题卷相应位置上) (213.分解因式2x18的最终结果是 _. . 14.请写出一个大于3且小于4的无理数: 15(中
12、国象棋红方棋子按兵种不同分布如下:1个帅,5个兵,“士、马、车、象、炮”各两个,将所有棋子反面朝上放在棋盘中,任取一个,是象或帅的概率是 . 16.函数中,自变量x的取值范围_. y,x,3OD,AC17. 如图,AB是?O的直径,过B点作?O的切线,交弦AE的延长线于点C,作,ACB,60:BC,4垂足为D,若,, 则DE的长为 ( A D O E C B 第5题 第6题 2x18.如图,双曲线(,0)经过四边形OABC的顶点A、C,?ABC,90?,OC平分y,x,ABC,xxOA与轴正半轴的夹角,AB?轴,将?ABC沿AC翻折后得?,点落在OA上,B则四边形OABC的面积是 三、解答题(
13、满分66分) 2,1-722,,19.(本小题满分52)(1)计算:计算:-( sin30:,21aa,32, (2)先化简,再求值:,其中2 aa,42accident and the responsibility of leadership, such as concerning administrative sanctions should be dealt with by the personnel Department of the company. (3) personal injury accident occurs, the direct punishment 500-1000
14、, who is directly responsible for the accident responsibility, give notice of criticism and 50-100 economic sanctions against them. (4) to conceal the accident, reported without undue delay or false, to inform the administrative leadership of the criticism, resulting in serious consequences, the pur
15、suit of leadership, along with 500-1000 punishment. (5) significant near miss should be attempted as the case of responsible for the accident and construction team injuries accident penalty provisions, mutatis mutandis. Eight, should perform in the construction standards and specifications, serial n
16、umber a 1 GB3323-2005 steel fusion welded butt joints, welding engineering-Ray lighting and quality rating of 2 GB11345-89 steel welds manual methods of ultrasonic inspection and testing results for grade 3 GB50236-2002 industrial pipe welding engineering code for construction and acceptance of fiel
17、d equipment 4 HGJ222-92 technical specification for welding of aluminium and its alloys 5 low temperature steel welding procedure 6 SH3525-2004 petrochemical JB/ T4708-2000 of welding procedure qualification for steel pressure vessels 7 JB/4709-2000 8 JB4730-2005 pressure vessel welding procedures o
18、f steel pressure vessel NDT 9 JB/T4744-2000 steel pressure vessel products mechanical properties test of welded plate II, mechanical equipment installation engineering 1 GB150-98 2 GB50128-2005 vertical cylindrical steel pressure vessel steel welded specification for construction and acceptance of o
19、il tank 3 JB/ T4735-1997 steel welded atmospheric pressure vessel 4 GB50231-2009 mechanical equipment installation engineering construction and acceptance specification for 5 GB50275-98 compressor, fan 数学教师网 精品资料免费下载 20.(本小题满分8分)如图,如下图均为22的正方形网格,每个小正方形的边长均为1(请,分别在三个图中各画出一个与?ABC成轴对称、顶点在格点上,且位置不同的三角形(
20、 21.(本小题满分6分)一条船上午8点在A处望见西南方向有一座灯塔B(如图),此时测得船和灯塔相距602海里,船以每小时30海里的速度向南偏西24的方向航行到C处,这时望见灯塔在船的正北方向(参考数据:sin24?0.4,cos24?0.9)( 北 (1)求几点钟船到达C处; (2)求船到达C处时与灯塔之间的距离( A D 东 B C 22(本小题满分8分)某中学为了了解学生体育活动情况,随即调查了720名初二学生,调查内容是:“每天锻炼是否超过1小时及未超过1小时的原因”,利用所得的数据制成了扇形统计图和频数分布直方图.根据图示,解答下列问题: (1)若在被调查的学生中随机选出一名学生测试
21、其体育成绩,选出的是“每天锻炼超过1小时”的学生的概率是多少, (2)“没时间”锻炼的人数是多少,并补全频数分布直方图; (3)2012年宁波市区初二学生约为2万人,按此调查,可以估计2012年宁波市区初二学生中每天锻炼未超过1小时的学生约有多少万人, (4)请根据以上结论谈谈你的看法. 23.(本小题满分7分)如图,?O的直径AB=8,C为圆周上一点,AC=4,过点C作?O的切线l,过点B作l的垂线BD,垂足为D,BD与?O交于点 E( D (1) 求?AEC的度数; C E (2)求证:四边形OBEC是菱形( l B A O accident and the responsibility
22、of leadership, such as concerning administrative sanctions should be dealt with by the personne数学教师网收集整理 第3页 l Department of the company. (3) personal injury accident occurs, the direct punishment 500-1000, who is directly responsible f共12页 欢迎下载教学资料or the accident responsibility, give notice of crit
23、icism and 50-100 economic sanctions against them. (4) to conceal the acciden t, reported without undue delay or false, to inform the administrative leadership of the criticism, resulting in serious consequences, the pursuit of leadership, along with 500-1000 punishment. (5) significant near miss sho
24、uld be attempted as the case of responsible for the accident and construction team injuries accident penalty provisions, mutatis mutandis. Eight, should perform in the construction standards and specifications, serial number a 1 GB3323-2005 steel fusion welded butt joints, welding engineering-Ray li
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 最新 宁波 地区 中考 数学模拟 试卷 优秀 名师 资料
链接地址:https://www.31doc.com/p-1478192.html