最新丽水中考数学模拟试题优秀名师资料

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1、2010年丽水中考数学模拟试题班级 姓名 座号 成绩 (满分150分;考试时间120分钟) 一、填空题:(每小题3分，共30分) 1(据新华社报道:2010年我国粮食产量将达到540000000000千克，用科学记数法可表示为_千克. 2005200622(若+|y+1|=0，则x+y=_( x,13(如图，一个透明的圆柱形状的玻璃杯，由内部测得其底面半径为3cm，高为8cm，今有一支12cm的吸管任意斜放于杯中，若不考虑吸管的粗细，吸管露出杯口长度最少为_cm( 1124(若a+=6，则a+=_( 2aa5(某商场5月份一周的利润情况如下表: 日期 2日 3日 4日 5日 6日 7日 8日

2、当日利润,万元 0.20 0.24 0.23 0.23 0.2l 0.19 O.17 根据上表，估计该商场今年5月份的总利润是_万元( a2ab，6(已知=，则=_. b3b7(一顶简易的圆锥形帐篷，帐篷收起来时伞面的长度有4米，撑开后帐篷高2米，则帐篷撑好后的底面直径是_米. 08(在Rt?ABC中，?C=90，AC=6，BC=8，则其外接圆的半径为_( 9(圆心在x轴上的两圆相交于A、B两点，已知A点的坐标为(-3，2)，则B点的坐标是_( 10(用长4cm，宽3cm的邮票300枚不重不漏摆成一个正方形，这个正方形的边长等于_cm( 二、选择题:(每题3分，共30分) 0011(元月份某一

3、天，北京市的最低气温为-6 C，常州市的最低气温为2 C，那么这一天常州市的气温比北京市的最低气温高 0000 A(6 C B(4 C C(-8 C D(8 C 12(如图，有一个正方体纸盒，在它的三个侧面分别画有三角形、正方形和圆，现用一把剪刀沿着它的棱剪开成一个平面图形，则展开图可以是 13(学校开展为贫困地区捐书活动，以下是八名学生捐书的册数:2，2，2，3，6，5，6，7，则这组数据的中位数为 A(2 B(3 C(4 D(4.5 614.如图，P是反比例函数y=在第一象限分支上的一个动点，PA?x轴，随着xx的逐渐增大，?AP0的面积将 A(增大 B(减小 C(不变 D(无法确定 6

4、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

5、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 wi

6、ll 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 D

7、epartment. (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) p

8、ersonal 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 leadershi

9、p of the criticism, resulting in serious consequences, the pursuit15.为了鼓励节约用水,按以下规定收取水费:(1)每户每月用水量不超过20立方米，则每立方米水费1.8元;(2)若每户每月用水量超过20立方米，则超过部分每立方米水费3元，设某户一个月所交水费为y(元)，用水量为x(立方米),则y与x的函数关系用图象表示为 0 10 20 30 0 10 20 30 0 10 20 30 A B C D 16.一张桌子上摆放着若干个碟子，从三个方向上看，三种视图如下图所示，则这张桌手上共有碟子为 A.6个 B(9个 C(12个 D

10、(17个 17(生物学指出:生态系统中，每输入一个营养级的能量，大约只有10,的能量能够滚动到下一个营养级，在H?H?H?H?H?H这条生物链中(H表示第n个营养级，n=1，2，123456n6)(要使H获得10千焦的能量，那么需要H提供的能量约为 614567 A(10千焦 B(10千焦 C(10千焦 D(10千焦 18(在1000个数据中，用适当的方法抽取50个作为样本进行统计，频数分布表中，54.5?57.5这一组的频率是O.12，那么，估计总体数据落在54.5?57.5之间的约有 A(6个 B(12个 C(60个 D(120(个 x，8,4x,1,19(若不等式组的解集是x3，则m的取

11、值范围是 ,x,m,A. m3 B(m?3 C(m?3 D(m3，xm，因为已知其解集为x3，依据同大取大法则，m?3，故选C( 020( A ?O从与AC相切于A点滚动到与AB相切于A点，转过120，则在三个顶点共转过0360，即一周(又因为?O在三边上各转过一周，所以共转动了4周( 3321(原式=1+9+3-9=10( 32222( 6-3(x+1)=x-1，x+3x-4=0，?x=-4，x=1(经检验:x=-4是原方程的根. l2l23(1)?BD=CD，BF=CE，?RtBDF?RtCDE，?B=?C( 4、加强口算练习，逐步提高学生计算的能力。ABC是等腰三角形( 0 (2)?A=

12、90，DE?AC;DF?AB,?四边形AFDE是矩形， 又?RtBDF?RtCDE,?DF=DE，?四边形AFDE是正方形( 24(图略( 820n,，,0l,25(?=,?n=50，?BOC=50，?AC切0于C， 1809OC?OC?AC，?OA=?12.45，?AB=OA-OB=4.45(m)( 0cos5026(1)甲:7(5，2;乙:7，1.2，0.4( 2.正弦：22SS(2)?(?乙运动员的射靶成绩较为稳定( 甲乙6 HG20201-2000 construction installation engineering construction standard 7, HG . P

13、ressure 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 measur

14、es 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 dir

15、ectly 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

16、 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 re

17、sponsible 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 pursuit15k，b,25,27(1)设此

18、一次函数解析式为y=kx+b,则,?k=-1,b=40, ,20k，b,20,(3)若条件交代了某点是切点时,连结圆心和切点是最常用的辅助线.（切点圆心要相连）即:一次函数解析式为y=-x+40. (2)设每件产品的销售价应定为x元，所获销售利润为w元， 22w=(x-10)(40-x)=-x+50x-400=-(x-25)+225, 产品的销售价应定为25元，此时每日获得最大销售利润为225元( 28(1)设OD=x,则CO=AD=8-x. 22 ?(8-x)-x=16(?x=3，D的坐标是(3，O)， 说明：根据垂径定理与推论可知对于一个圆和一条直线来说，如果具备：又点C的坐标是(0,4)

19、，设直线CD的解析式为y=kx+b, 六、教学措施：b,4,4于是有,?y=-x+4. ,33k，b,0,2(2)由题意得B、C,D三点坐标分别为(8，4)，(0,4)(3，O)，设抛物线解析式为y=ax+bx+c 当a越大，抛物线开口越小；当a越小，抛物线的开口越大。64a，8b，c,4,周 次日 期教 学 内 容, c,4则有,9a，3b，c,0,4322于是可得抛物线解析式为:y=x-x+4( 1515同心圆：圆心相同，半径不等的两个圆叫做同心圆。(3)在抛物线上不存在一点P，使PBC的面积等于矩形ABCD的面积( 理由是:由抛物线的对称性可知(以抛物线顶点为P的PBC面积为最大. 43

20、244446422由y=x-x+4= (x-4)-可却，顶点坐标为(4，-)(则PBC的高为4+|-|=. 151515151515152、100以内的进位加法和退位减法。164256?PBC的面积为8=小于矩形ABCD的面积为48=32( 215152. 图像性质：故在x轴下方且在抛物线上不存在一点P，使PBC的面积等于矩形ABCD的面积. strative leadership of the criticism, resulting in serious consequences, the pursuit100 economic sanctions against them. (4) to

21、 conceal the accident, reported without undue delay or false, to inform the admini-give notice of criticism and 50 1000, who is directly responsible for the accident responsibility,-. (3) personal injury accident occurs, the direct punishment 500ty of leadership, such as concerning administrative sa

22、nctions should be dealt with by the personnel Department of the company10,000 yuan, responsible for the direct responsibility for the accident and the responsibili-t occurred, the direct punishment 0.5concerning administrative sanctions, should be brought to the company or the relevant Department. (

23、2) personal injury acciden uch asectly punished 12 million. Direct responsibility for the accident and have the corresponding responsibility of leadership, son the job unit fined 300 yuan, the unit will charge a fine of 100 Yuan. 7.5.3 accident penalties (1) injuries fatalities dirons, d 200 Yuan, c

24、onstruction person in charge a fine of 50 Yuan. (8) no permit to work and the job in accordance with the provisifine of 50 Yuan. (7) at height and the opening and provisional protective measures have been taken, the responsible unit fine team aing, using gas cylinders, each operator fined 20 Yuan. Gas bottle without the hot sun exposure measures, responsibilities of ing construction standard 7, HG . Pressure gauges, using an installed spark arrestor for acetylene cylinders, illegal carry2000 construction installation engineer-6 HG20201 6