最新毕节中考数学试题及答案优秀名师资料.doc

2010毕节中考数学试题及答案2010年毕节地区初中毕业生学业,升学,统一考试 一、选择题(本大题共15小题，每小题3分，共45分) 2mn，21(若，则的值为( ) mn,，,3(2)0A( B( C(0 D(4 ,4,12(2008北京奥运会火炬传递的路程约为13.7万公里(近似数13.7万是精确到( ) A(十分位 B(十万位 C(万位 D(千位 3(某县为发展教育事业，加强了对教育经费的投入，2008年投入3 000万元，预计2010年投入5 000万元(设教育经费的年平均增长率为，x根据题意，下面所列方程正确的是( ) 22A( B( 3000(1)5000，,x30005000x,22C( D( 3000(1)5000，,x,3000(1)3000(1)5000，,xx4(有一人患了流感，经过两轮传染后共有100人患了流感，那么每轮传染中，平均一个人传染的人数为( ) A(8人 B(9人 C(10人 D(11人 2xbxa，,05(已知方程有一个根是，则下列代数式的值恒为常数,aa(0)的是( ) aabab，ab,A( B( C( D( b26(函数在同一直角坐标系内的图象大致是( ) yaxbyaxbxc,，,，和6 HG20201-2000 construction installation engineering construction standard 7, HG . Pressure gauges, using an installed spark arrestor for acetylene cylinders, illegal carrying, using gas cylinders, each operator fined 20 Yuan. Gas bottle without the hot sun exposure measures, responsibilities of team a fine of 50 Yuan. (7) at height and the opening and provisional protective measures have been taken, the responsible unit fined 200 Yuan, construction person in charge a fine of 50 Yuan. (8) no permit to work and the job in accordance with the provisions, on the job unit fined 300 yuan, the unit will charge a fine of 100 Yuan. 7.5.3 accident penalties (1) injuries fatalities directly punished 12 million. Direct responsibility for the accident and have the corresponding responsibility of leadership, such as concerning administrative sanctions, should be brought to the company or the relevant Department. (2) personal injury accident occurred, the direct punishment 0.5-10,000 yuan, responsible for the direct responsibility for the 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, 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 pursuit27(把抛物线y=x+bx+c的图象向右平移3个单位，再向下平移2个单位，所得图象的解析式为 2y=x,3x，5，则( ) A(b=3，c=7 B(b=6，c=3 C(b=9，c=5 D(b=9，c=21 ,1,ky,8(函数的图象与直线没有交点，那么k的取值范围是( ) yx,xk,1k,1k,1k,1A( B( C( D( 9(如图,两正方形彼此相邻且内接于半圆,若小正方形的2面积为16cm,则该半圆的半径为( ) A. cm B. 9 cm (45)， 45C. cm D.62cm 210(已知圆锥的母线长是5cm，侧面积是15cm，则这个圆锥底面圆的半径是( ) A(1.5cm B(3cm C(4cm D(6cm 11(观察下列几何体，主视图、左视图和俯视图都是矩形的是( ) (A B C D ?ABC12(在正方形网格中，的位置如图 cos，B所示，则的值为( ) 1332A( B( C( D( 22326 HG20201-2000 construction installation engineering construction standard 7, HG . Pressure gauges, using an installed spark arrestor for acetylene cylinders, illegal carrying, using gas cylinders, each operator fined 20 Yuan. Gas bottle without the hot sun exposure measures, responsibilities of team a fine of 50 Yuan. (7) at height and the opening and provisional protective measures have been taken, the responsible unit fined 200 Yuan, construction person in charge a fine of 50 Yuan. (8) no permit to work and the job in accordance with the provisions, on the job unit fined 300 yuan, the unit will charge a fine of 100 Yuan. 7.5.3 accident penalties (1) injuries fatalities directly punished 12 million. Direct responsibility for the accident and have the corresponding responsibility of leadership, such as concerning administrative sanctions, should be brought to the company or the relevant Department. (2) personal injury accident occurred, the direct punishment 0.5-10,000 yuan, responsible for the direct responsibility for the 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, 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 pursuit13(正方形ABCD在坐标系中的位置如图所示， ,将正方形ABCD绕D点顺时针方向旋转后， 90B点的坐标为( ) A( B( C( D( (22),，(31)，(40)，(41)，14(右图是根据某班40名同学一周的体育锻炼情况绘 制的条形统计图.那么关于该班40名同学体育锻炼时 间的说法错误的是( ) (学生人数(人)20A(极差是3 B(中位数为8 C(众数是8 161514D(锻炼时间超过8小时的有21人 10753a，115(在盒子里放有三张分别写有整式、10锻炼时间(小时)798(第5题图)a，22、的卡片，从中随机抽取两张卡片，把两张卡片上的整式分别作为分子和分母，则能组成分式的概率是( )( 1213A. B. C. D. 3364二、填空题(本大题共5小题，每小题5分，共25分) 2a916(计算:, ( aa,3317(写出含有字母x、y的五次单项式 (只要求写出一个)( 2xx,，,68018(三角形的每条边的长都是方程的根，则三角形的周长是 ( 19(搭建如图?的单顶帐篷需要17根钢管，这样的帐篷按图?，图?的方式串起来搭建，则串7顶这样的帐篷需要 根钢管( 6 HG20201-2000 construction installation engineering construction standard 7, HG . Pressure gauges, using an installed spark arrestor for acetylene cylinders, illegal carrying, using gas cylinders, each operator fined 20 Yuan. Gas bottle without the hot sun exposure measures, responsibilities of team a fine of 50 Yuan. (7) at height and the opening and provisional protective measures have been taken, the responsible unit fined 200 Yuan, construction person in charge a fine of 50 Yuan. (8) no permit to work and the job in accordance with the provisions, on the job unit fined 300 yuan, the unit will charge a fine of 100 Yuan. 7.5.3 accident penalties (1) injuries fatalities directly punished 12 million. Direct responsibility for the accident and have the corresponding responsibility of leadership, such as concerning administrative sanctions, should be brought to the company or the relevant Department. (2) personal injury accident occurred, the direct punishment 0.5-10,000 yuan, responsible for the direct responsibility for the 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, 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 pursuit第 3 页 20(如图，AB为?O的弦，?O的半径为5，OC?AB于点D，交?O于点C，且CD,l，则弦AB的长是 ( 三、解答题(共7个小题，各小题分值见题号后，共80分) 12(1)5,x?,21(本题8分)解不等式组，并把解集在数轴上表示出来( ,321x,，x,222x，y,(x,y)2222(本题8分)已知，求 的值( xy,30x,2xy，y，BCDCEAD23(本题10分)如图，已知: ABCD中，的平分线交边于，ABCBGCEGAEDG,EFAD，的平分线 交于，交于(求证:( G E A D F B C 6 HG20201-2000 construction installation engineering construction standard 7, HG . Pressure gauges, using an installed spark arrestor for acetylene cylinders, illegal carrying, using gas cylinders, each operator fined 20 Yuan. Gas bottle without the hot sun exposure measures, responsibilities of team a fine of 50 Yuan. (7) at height and the opening and provisional protective measures have been taken, the responsible unit fined 200 Yuan, construction person in charge a fine of 50 Yuan. (8) no permit to work and the job in accordance with the provisions, on the job unit fined 300 yuan, the unit will charge a fine of 100 Yuan. 7.5.3 accident penalties (1) injuries fatalities directly punished 12 million. Direct responsibility for the accident and have the corresponding responsibility of leadership, such as concerning administrative sanctions, should be brought to the company or the relevant Department. (2) personal injury accident occurred, the direct punishment 0.5-10,000 yuan, responsible for the direct responsibility for the 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, 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 pursuit24(本题12分)如图，已知CD是?ABC中AB边上的高，以CD为直径的?O分别交CA、CB于点E、F，点G是AD的中点(求证:GE是?O的切线( 25(本题12分)阅读对人成长的影响是很大的(希望中学共有1500名学生，为了了解学生课外阅读的情况，就“你最喜欢的图书类别”(只选一项)随机调查了部分学生，并将调查结果统计后绘制成如下统计表和条形统计图(请你根据统计图表提供的信息解答下列问题: (1)这次随机调查了 名学生;(3分) 6 HG20201-2000 construction installation engineering construction standard 7, HG . Pressure gauges, using an installed spark arrestor for acetylene cylinders, illegal carrying, using gas cylinders, each operator fined 20 Yuan. Gas bottle without the hot sun exposure measures, responsibilities of team a fine of 50 Yuan. (7) at height and the opening and provisional protective measures have been taken, the responsible unit fined 200 Yuan, construction person in charge a fine of 50 Yuan. (8) no permit to work and the job in accordance with the provisions, on the job unit fined 300 yuan, the unit will charge a fine of 100 Yuan. 7.5.3 accident penalties (1) injuries fatalities directly punished 12 million. Direct responsibility for the accident and have the corresponding responsibility of leadership, such as concerning administrative sanctions, should be brought to the company or the relevant Department. (2) personal injury accident occurred, the direct punishment 0.5-10,000 yuan, responsible for the direct responsibility for the 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, 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 pursuit第 5 页 (2)把统计表和条形统计图补充完整;(6分) (3)随机调查一名学生，恰好是最喜欢文学类图书的概率是多少,(3分) 22x26(本题14分)已知关于的一元二次方程有两个实xmxm，,，,(21)0xx数根和( 12m(1)求实数的取值范围;(6分) 22m(2)当xx,0时，求的值(8分) 126 HG20201-2000 construction installation engineering construction standard 7, HG . Pressure gauges, using an installed spark arrestor for acetylene cylinders, illegal carrying, using gas cylinders, each operator fined 20 Yuan. Gas bottle without the hot sun exposure measures, responsibilities of team a fine of 50 Yuan. (7) at height and the opening and provisional protective measures have been taken, the responsible unit fined 200 Yuan, construction person in charge a fine of 50 Yuan. (8) no permit to work and the job in accordance with the provisions, on the job unit fined 300 yuan, the unit will charge a fine of 100 Yuan. 7.5.3 accident penalties (1) injuries fatalities directly punished 12 million. Direct responsibility for the accident and have the corresponding responsibility of leadership, such as concerning administrative sanctions, should be brought to the company or the relevant Department. (2) personal injury accident occurred, the direct punishment 0.5-10,000 yuan, responsible for the direct responsibility for the 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, 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 pursuit27(本题16分)某物流公司的快递车和货车每天往返于A、B两地，快y递车比货车多往返一趟(下图表示快递车距离A地的路程(单位:x千米)与所用时间(单位:时)的函数图象(已知货车比快递车早1小时出发，到达B地后用2小时装卸货物，然后按原路、原速返回，结果比快递车最后一次返回A地晚1小时( yx(1) 请在下图中画出货车距离A地的路程(千米)与所用时间(时)6 HG20201-2000 construction installation engineering construction standard 7, HG . Pressure gauges, using an installed spark arrestor for acetylene cylinders, illegal carrying, using gas cylinders, each operator fined 20 Yuan. Gas bottle without the hot sun exposure measures, responsibilities of team a fine of 50 Yuan. (7) at height and the opening and provisional protective measures have been taken, the responsible unit fined 200 Yuan, construction person in charge a fine of 50 Yuan. (8) no permit to work and the job in accordance with the provisions, on the job unit fined 300 yuan, the unit will charge a fine of 100 Yuan. 7.5.3 accident penalties (1) injuries fatalities directly punished 12 million. Direct responsibility for the accident and have the corresponding responsibility of leadership, such as concerning administrative sanctions, should be brought to the company or the relevant Department. (2) personal injury accident occurred, the direct punishment 0.5-10,000 yuan, responsible for the direct responsibility for the 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, 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 pursuit第 7 页 的函数图象;(3分) (2) 求两车在途中相遇的次数(直接写出答案);(3分) (3) 求两车最后一次相遇时，距离A地的路程和货车从A地出发了几小时(10分) (千y200 米) 150 100 50 O -1 2 3 4 5 6 7 8 9 (时x-521 ) 0 1 参考答案 一、选择题(本大题共15小题，每小题3分，共45分) 1 B(2 D(3 A( 4 B(5 D(6 C(7 A(8 A(9 C(10 B(11 B(12 B(13 D(14 B(15 B( 6 HG20201-2000 construction installation engineering construction standard 7, HG . Pressure gauges, using an installed spark arrestor for acetylene cylinders, illegal carrying, using gas cylinders, each operator fined 20 Yuan. Gas bottle without the hot sun exposure measures, responsibilities of team a fine of 50 Yuan. (7) at height and the opening and provisional protective measures have been taken, the responsible unit fined 200 Yuan, construction person in charge a fine of 50 Yuan. (8) no permit to work and the job in accordance with the provisions, on the job unit fined 300 yuan, the unit will charge a fine of 100 Yuan. 7.5.3 accident penalties (1) injuries fatalities directly punished 12 million. Direct responsibility for the accident and have the corresponding responsibility of leadership, such as concerning administrative sanctions, should be brought to the company or the relevant Department. (2) personal injury accident occurred, the direct punishment 0.5-10,000 yuan, responsible for the direct responsibility for the 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,