最新毕节中考数学试题及答案优秀名师资料.doc
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1、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,
2、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,
3、 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
4、 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 fatalit
5、ies 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
6、-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 dire
7、ctly 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=
8、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
9、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
10、, 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
11、 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 l
12、eadership, 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
13、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.
14、(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
15、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
16、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. Ga
17、s 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 ac
18、cordance 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 adm
19、inistrative 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 sanctio
20、ns 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, repo
21、rted 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
22、 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,
23、 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
24、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 le
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