最新安徽省中考数学试题及试题答案优秀名师资料.doc
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1、2010年安徽省中考数学试题及试题答案2010年安徽省中考数学试题及答案 一(选择题:(本大题10小题,每小题4分,满分40分) 1. 在这四个数中,既不是正数也不是负数的是( ) ,1,0,1,2A) B)0 C)1 D)2 ,132. 计算的结果正确的是( ) (2x),x2233A) B) C) D) 8x6x8x6x003. 如图,直线?,?1,55,?2,65, ll12则?3为( ) 0000A)50. B)55 C)60 D)65 4. 2010年一季度,全国城镇新增就业人数为289万人,用科学记数法表示289万正确的是 ( ) 76 54A)2.8910. B)2.8910.C
2、)2.8910. D)2.8910. 5. 如图,下列四个几何体中,其主视图、左视图、俯视图中只有两个相同的是 6. 某企业15月分利润的变化情况图所示,以下说法与图中反映的信息相符的是( ) A)12月分利润的增长快于23月分利润的增长 B)14月分利润的极差于15月分利润的极差不同 C)15月分利润的的众数是130万元 D)15月分利润的的中位数为120万元 22bk7. 若二次函数配方后为则、y,x,bx,5y,(x,2),k的值分别为 ( ) A)0.5 B)0.1 C)4.5 D)4.1 08. 如图,?O过点B 、C。圆心O在等腰直角?ABC的内部,?BAC,90,OA,1,BC,
3、6,则?O的半径为( ) 10231332A)B)C)D) 1 9. 下面两个多位数1248624、6248624,都是按照如下方法得到的:将第一位数字乘以2,若积为一位数,将其写在第2位上,若积为两位数,则将其个位数字写在第2位。对第2位数字再进行如上操作得到第3位数字,后面的每一位数字都是由前一位数字进行如上操作得到的。当第1位数字是3时,仍按如上操作得到一个多位数,则这个多位数前100位的所有数字之和是( ) A)495 B)497 C)501 D)503 m/s10. 甲、乙两个准备在一段长为1200米的笔直公路上进行跑步,甲、乙跑步的速度分别为4和m/s6,起跑前乙在起点,甲在乙前面
4、100米处,若同时起跑,则两人从起跑至其中一人先到达终点的过程中,甲、乙两之间的距离与时间的函数图象是 y(m)t(s)( ) 填空题(本大题4小题,每小题5分,满分20分) 3,6,2,11. 计算:_. ,x,4,2,12. 不等式组的解集是_. ,3x,4,8,013. 如图,?ABC内接于?O,AC是?O的直径,?ACB,50,点D是BAC上一点,则?D,_ 14. 如图,AD是?ABC的边BC上的高,由下列条件中的某一个就能推出?ABC是等腰三角形的是_。(把所有正确答案的序号都填写在横线上) ?BAD,?ACD ?BAD,?CAD,?AB+BD,AC+CD ?AB-BD,AC-CD
5、 三,(本大题共2小题,每小题8分,共16分) 15. 先化简,再求值: 2a,a,144a,1,(1),其中 2a,a,a116. 若河岸的两边平行,河宽为900米,一只船由河岸的A处2 0沿直线方向开往对岸的B处,AB与河岸的夹角是60,船的速度为5米/秒,求船从A到B处约需时间几分。(参考数据:) 3,1.7四(本大题共2小题,每小题8分,共16分) k17. 点P(1,)在反比例函数的图象上,它关于轴的对称点在一次函数的图象上,y,yay,2x,4x求此反比例函数的解析式。 ,ABCD18.在小正方形组成的1515的网络中,四边形ABCD和四边形的位置如图所示。 0?现把四边形ABCD
6、绕D点按顺时针方向旋转90,画出相应的图形, ABCD1111,ABCD?若四边形ABCD平移后,与四边形成轴对称,写出满足要求的一种平移方法,并画出平移后的图形 ABCD2222五(本大题共2小题,每小题10分,共20分) 2m19(在国家下身的宏观调控下,某市的商品房成交价由今年3月分的14000元/下降到5月分的126002m元/ 3 ?问4、5两月平均每月降价的百分率是多少,(参考数据:) 0.9,0.95?如果房价继续回落,按此降价的百分率,你预测到7月分该市的商品房成交均价是否会跌破10000元2/,请说明理由。 m20.如图,AD?FE,点B、C在AD上,?1,?2,BF,BC
7、?求证:四边形BCEF是菱形 ?若AB,BC,CD,求证:?ACF?BDE 21.上海世博会门票价格如下表所示: 某旅行社准备了1300元,全部用来购买指定日普通票和平日优惠票,且每种至少买一张。 ?有多少种购票方案,列举所有可能结果; ?如果从上述方案中任意选中一种方案购票,求恰好选到11张门票的概率。 22.春节期间某水库养殖场为适应市场需求,连续用20天时间,采用每天降低水位以减少捕捞成本的办法,对水库中某种鲜鱼进行捕捞、销售。 1,x,20九(1)班数学建模兴趣小组根据调查,整理出第天(且为整数)的捕捞与销售的相关信息xx如下: ?在此期间该养殖场每天的捕捞量与前一末的捕捞量相比是如何
8、变化的, yxx?假定该养殖场每天捕捞和销售的鲜鱼没有损失,且能在当天全部售出,求第天的收入(元)与(天)之间的函数关系式,(当天收入,日销售额日捕捞成本) yyx试说明?中的函数随的变化情况,并指出在第几天取得最大值,最大值是多少, kk,1ba,b,caABCc23.如图,已知?ABC?,相似比为(),且?ABC的三边长分别为、(),1114 ?的三边长分别为、。 aABCbc111111a,kc?若,求证:; c,a1b?若,试给出符合条件的一对?ABC和?,使得、和a、进都是正整数,并ac,aABCcbc1111111加以说明; k,2?若,是否存在?ABC和?使得,请说明理由。 b,
9、ac,bABC111115 6 7 (英文版 ) easily blame, to prevent the broken window effect. Supervise the leading cadres to play an exemplary role, take the lead in the strict implementation of the and , lead to safeguard the solemnity and authority of the party discipline, ensure that the party discipline and the
10、laws and regulations for implementation in place. Throughout the discipline in the daily supervision and management , strengthen supervision and inspection, from the thorough investigation of violations of discipline behavior. Strengthen to key areas, key departments and key projects as well as the
11、masses reflect the concentration of the units and departments for supervision. - strengthening supervision, discipline inspection and supervision of cadres to set an example for compliance with the and is a man must be hexyl, blacksmith needs its own hardware. Discipline inspection organs as the exe
12、cutor of the party discipline, and supervisor of the defenders, for its supervision must be more strictly, discipline inspection and supervision of cadres to firmly establish the awareness of Party Constitution, sense of discipline and rules consciousness, politics loyalty, sense obey. Action speak
13、Ji Ordinance to set an example of the regulations of the rule of law, strengthen supervision and accept the supervision of the firmness and consciousness, do comply with and . To firmly establish the discipline must first be disciplined, the supervisor will be subject to the 8 supervision of concept
14、, and consciously safeguard and implement party compasses party, take the lead in practicing three strict real strict, so loyal, clean, play. To be good at learning, the Constitution and the as morality, politics and brought to fruition; to implement , do not want to, dare not, not with disciplinary
15、 ruler to supervision; to discipline a ruler, often the control inspection, and consciously in the ideological red line to draw the row Ming Good accumulation is indeed the bottom line, so that the heart has fear, said to have quit, the line has ended. Attached: indifferent to heart, calmly to the t
16、able in our life, there are many unpredictable things will happen, some good, some bad things, we cannot control is powerless to stop, but with time, you will find in life sometimes turns out to be not good, some bad things finally turned out to be a good thing, but then we muddy however did not kno
17、w, this is the life teach us things. 1, life can be complex, can also be simple. Want simple life of precipitation, to have enough time to reflect, to make Become more perfect. Life is the most important thing is not to win, but the struggle; not to have conquered, but to have fought well. 2, the pl
18、ain is the background of life. Live a plain life, give up on themselves is not a coward, but the wise answers; not disillusioned after the heart, such as ashes, but experience the storm after the enlightenment; not unrewarding perfunctorily, but calm attitude of life of unrestrained self-confidence.
19、 Plain living, there is no noise noisy, no earthly troubles, more did not fill in the discontent of desire, 9 some just a calm, a calm. 3, memory of heart will not good things to erase the, life is a When no movie, pain is a beginning, the struggle is a kind of process, death is a kind of ending. Gi
20、ve up this giving up is the helpless, do not give up the abandoned, do not give up this giving up is ignorance, do not give up should not give up is persistent. 4, a thing figured is heaven, think impassability is hell. Since the living, to live better. Sometimes we because of too narrow-minded, too
21、 care around the chores and penny wise and pound foolish, not worth the candle. Some things to attract trouble and worry, completely depends on how we look at and deal with it. Dont always take everything back to things, and dont get into a blind alley, dont want to face, dont be narrow-minded. Poke
22、 to care, is a kind of open-minded, a free and easy. 5, I am not afraid of others behind me a knife, I afraid to look back and see stab me, is my intention to treat people; I am not afraid of the truth to tell the best friend, Im afraid he turned to it as a joke to tell dont 6, when we are in a posi
23、tive frame of mind, you will find many good things; and when we are in a negative state of mind, you will find many depressed things; life happy and worry, all is you of life attitude, optimistic, good luck; loss of sink, Eritrea company. When you are in adversity, may wish to change a point of view
24、 to think everything over to the good Think, because good mentality decided the fate of the! 7, people are tired, rest; heart tired, calm. Grow up, mature, this society read. Tired and sad, squat down, to their a hug. Because the world no one can 10 sympathize with you, have mercy on you. You cry, t
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