北师大版八年级数学试卷上册期末测试(含答案).doc

position-related consumption of civil servants has been swept by finance, consumer, regardless of cost, extravagance and waste in the civil service position-related consumption, abuse, corruption and embezzlement, corruption is important. Then, under the conditions of market economy, how to reform the existing civil duty consumption management, explores a source to prevent and curb the post consumption corruption way, is currently a major issue faced by honest work. Recently, I conducted research on this issue, this problem on some humble opinions. First, the existing public servants duty consumption the main problems seen from the investigation and reasons, in recent years, public servants duty consumption caused by the abuses and not a person of integrity, is one of the major problems in the party in Government, its operation order have a negative effect on the party and Government organs, seriously damaging the image of the party and the Government, undermining the relationship between party and the masses, effect, opening up and economic construction. From I County in recent years of governance situation see, positions consumption in the produced of two not phenomenon rendering four a features: a is positions consumption system lost has due of binding, right is greater than rules, and right is greater than method of phenomenon more highlight; II is in positions consumption in the Camera Obscura operation, using terms, will positions consumption into has personal consumption, will corporate points to into personal points to, makes positions consumption in some aspects has into positions enjoy and self-dealing of means; three is to positions consumption for name, fraud, false impersonator, Trend of negative corruption phenomena such as corruption and misappropriation; four palaces, follow the fashion, rivalries, wasteful, and post consumption became a symbol of showing off their individual capacities. Caused by public servants duty consumption of many two phenomenon in which people reflect the biggest problems are: (a) the official car problems. Mainly in three aspects: one is the larger buses cost expenditure. According to statistics, until November 2003, XX County township Department bus 159 cars, which department owns the bus 145 vehicles, and showed an increasing trend. Financial expenses cost per bus per year to 35,000 yuan, and in fact every cost up to 50,000 yuan. Some units also hiring temporary drivers and expenditure on wages and subsidies. Necessary to keep a car, but also dependants, leading to larger expenses. Second, gongchesiyong breed unhealthy tendencies. Some people believe that now some bus drivers use one-third, one-third leading private one-third used for official purposes. Some public servants, especially leading officials motoring, cars for private purposes, violating the self-discipline regulations, and even lead to traffic accidents. According to statistics from related departments, since 2004, the correct investigation in our County serves nearly 30 cars for private purposes, only the first half of this year, cars for private purposes or内装订线学校:_姓名：_班级：_外装订线2015-2016学年度绿塘中学八年级期末测试试卷考试范围：全书；考试时间：100分钟；命题人：萧楠题号一二三四总分得分注意事项：1 答题前填写好自己的姓名、班级等信息评卷人得分一、选择题（每题3分共30分）1已知M（0，2）关于x轴对称的点为N， 则N点坐标是（ ） A（0，-2） B（0，0） C（-2，0） D（0，4）2方程组的解是 ()A. B.C. D.3下列各曲线中不能表示y是x的函数的是（ ）A. B. C. D.4已知：a0、b-1，则点（a，b+1）在（ ）A、第一象限 B、第二象限C、第三象限D、第四象限5小华的爷爷每天坚持体育锻炼，某天他慢步到离家较远的绿岛公园，打了一会儿太极拳后跑步回家下面能反映当天小华的爷爷离家的距离y与时间x的函数关系的大致图像是（ ）A. B. C D6（2014永州一模）如图，已知直线EFMN垂足为F，且1=140，则当2等于（ ）时，ABCDA.50 B.40 C.30 D.607如图，把长方形ABCD沿EF对折后使两部分重合，若AEF=110，则1=（ ）A30 B35 C40 D508已知，则化简的结果是（ ）A B C D9（3分）方程组的解是（）A. B C D 评卷人得分二、填空题（每题5分 共20分）11二次根式在实数范围内有意义，则x的取值范围为 12已知点A（a1，2a3）在一次函数的图象上，则实数a= 13如图，圆柱形容器高为18cm，底面周长为24cm，在杯内壁离杯底4cm的点B处有乙滴蜂蜜，此时一只蚂蚁正好在杯外壁，离杯上沿2cm与蜂蜜相对的点A处，则蚂蚁从外币A处到达内壁B处的最短距离为 14若方程是关于、的二元一次方程，则 ， .评卷人得分三、计算题（每题4分共24分）15求下列各式中的值（1）（2）16计算：17解方程组： 18. 解方程组： 19计算：（）2+2320计算：+(-)0-|-2|+()-1评卷人得分四、解答题（共26分）21(本题满分4分)如图，利用关于坐标轴对称的点的坐标特点，分别作出ABC关于x轴和y轴对称的图形。22. (本题满分6分)已知关于x，y的二元一次方程y=kx+b的解有和（1） 求k，b的值（2）当x=2时，y的值（3）当x为何值时，y=3？23(本题满分4分)如图，BC长为3cm，AB长为4cm，AF长为12cm，求正方形CDEF的面积。DABCFE24(本题满分12分) 某工厂有一种材科，可加工甲、乙、丙三种型号机械配件共240个厂方计划由20个工人一天内加工完成并要求每人只加工一种配件根据下表提供的信息。解答下列问题：（1）设加工甲种配件的人数为x，加工乙种配件的人数为y，求y与x之间的函数关系式。（2）如果加工每种配件的人数均不少于3人那么加工配件的人数安排方案有几种？写出每种安排方案（3）要使此次加工配件的利润最大，应采用（2）中哪种方案？并求出最大利润值本工程自订立监理合同起，随即组建了项目监理组，驻入现场后严格按“建设工程监理规范”、“监理规划、细则”及公司有关工作制度，根据设计图纸和各项施工质量验收规范对本工程进行了正常的监理活动。leaders driving a vehicle accident caused by road accidents, 1, 1 people killed and direct economic losses amounting to more than 100,000 yuan. Third, high efficiency and low cost of the bus. Surveys show that, the operating costs of taxis for the 8200/. Is a fundamental priority of the reform, it is a difficult problem that must be solved in the reform process. Clearly, the post consumption averages three years before as a base and fine-tuned on the basis of this single practices must be improved. Improvements to adhere to three principles: first, under the existing policy provisions approved for public servants duty consumption standards, calibration, is not contrary to policy. Second, according to the local financial situation and peoples sustainability, public servants duty consumption standards approved, both financial reach, and people passing through. Third, according to the operational needs of civil servants responsible for authorized public servants duty consumption standards, both high and low positions, but also the nature of the work and the workload. In reform of method Shang, approved civil servants positions consumption standard to big unified, and small dispersed suitable, that most positions consumption project should according to policy provides proposed unified standard, consider to ranks, and units and the work task of differences sex, unified of standard should has elastic of and dynamic of, makes regions, and units in implementation unified standard Shi has must of flexible disposal right; but since set of standard must after financial, and audit, sector audit approved Hou to implementation. (C) reform package. Public servants duty consumption elasticity of consumption to limit consumption, turning mess into kitchen after dinner, follow the civil servant with a how to use personal title subsidies, or how to manage a personal duty consumption use of subsidies. Therefore, we must establish and perfect with public servants duty consumption monetization reform support of the series of governance systems such as the civil service examination of responsibility, system, low fault investigation system, the report said. While other measures to keep up. Discipline inspection and supervision organs, financial, auditing departments should strengthen supervision and inspection of public servants duty consumption monetization reform progress, to strengthen the reform of public servants duty consumption monetization system, measures to develop and monitor the implementation of inspection, not consumption as required, even shifting consumer behavior to stop, serious cases to deal with. Three ideas, public servants duty consumption monetization reform of politics, the economy and the deepening of the reform, public servants duty consumption as somewhere between a reform also demonstrated its importance and urgency. First of all, civil servants especially party and Government leaders and public servants duty consumption there are big drawbacks. NPC deputies and CPPCC members and the broad masses are concerned about. Secondly, the试卷第3页，总4页本卷由系统自动生成，请仔细校对后使用，答案仅供参考。参考答案1A【解析】根据关于x轴对称的点，横坐标相同，纵坐标互为相反数点M（0，2）关于x轴对称的点的坐标N为（0，-2），故选A2D【解析】由得x2把x2代入，得2y3，y1方程组的解是故选D.3B.【解析】试题分析：根据函数的定义可知，满足对于x的每一个取值，y都有唯一确定的值与之对应关系，据此对各选项图形分析判断后利用排除法求解A、能表示y是x的函数，故本选项不符合题意；B、不能表示y是x的函数，故本选项符合题意；C、能表示y是x的函数，故本选项不符合题意；D、能表示y是x的函数，故本选项不符合题意故选B考点：函数的概念4D【解析】，则点位于第四象限，故选D。5C【解析】试题分析：图象应分三个阶段，第一阶段：慢步到离家较远的绿岛公园，在这个阶段，离家的距离随时间的增大而增大；第二阶段：打了一会儿太极拳，这一阶段离家的距离不随时间的变化而改变故D错误；第三阶段：跑步回家，这一阶段，离家的距离随时间的增大而减小，故A错误，并且这段的速度大于第一阶段的速度，则B错误故选C考点：函数的图象6A【解析】试题分析：利用两直线ABCD，推知同位角3=4；然后根据平角的定义、垂直的性质以及等量代换求得2=50，据此作出正确的选择解：ABCD，3=4（两直线平行，同位角相等）；又1+3=180（平角的定义），1=140（已知），3=4=40；EFMN，2+4=90，2=50；故选A点评：本题考查了平行线的判定解答此类要判定两直线平行的题，可围绕截线找同位角、内错角和同旁内角本题是一道探索性条件开放性题目，能有效地培养学生“执果索因”的思维方式与能力7C【解析】试题分析：已知ADBC，AEF=110，根据平行线的性质可得BFE=180-AEF=180-110=70，由折叠的性质可得EFG=BFE=70，所以1=180-BFE-EFG=180-70-70=40故答案选C考点：平行线的性质；折叠的性质8A【解析】试题分析：解：，=故选A考点：二次根式的性质与化简9C【解析】试题分析：方程组利用加减消元法求解，(1)3+(2)得：7x=14，即x=2，把x=2代入(2)得：y=1，则方程组的解为故选C考点：解二元一次方程组10.A13x-【解析】试题分析：先根据二次根式有意义的条件列出关于x的不等式，求出x的取值范围即可试题解析：二次根式在实数范围内有意义，2x+10，解得x-考点：二次根式有意义的条件143.【解析】试题分析：本题考查了一次函数图象上点的坐标特征，注意：点在一次函数的图象上，则点的坐标满足函数关系式把A的坐标代入一次函数解析式可得关于a的方程：2a-3=a-1+1，解得：a=3，故答案为：3考点：一次函数图象上点的坐标特征1520 cm【解析】试题分析：将杯子侧面展开，建立A关于EF的对称点A，根据两点之间线段最短可知AB的长度即为所求：如答图，将杯子侧面展开，作A关于EF的对称点A，连接AB，则AB即为最短距离根据勾股定理，得（cm）考点：1平面展开（最短路径问题）；2轴对称的应用（最短路径问题）；3线段的性质；4勾股定理154,-1【解析】根据题意得：，解得.16（1）；（2