分式二次根式测试卷

reform results, economy, and political system, and culture system, and social system, and discipline check system, and party of construction system reform solid advance, tax, and financial, and price, and administrative approval, and State-owned enterprises, and ecological civilization, important field and key link reform made major progress, market in resources configuration in the of decisive role significantly enhanced, Unprecedented burst of momentum and vitality of economic and social development. XI General Secretarys speech in this regard include the reform only when there is no complete, the notes on the 18 session of ideas into the partys spirit of the reforms more difficult to move forward, the increasing use of the Socialist system with Chinese characteristics such as the ability to run the country. 4. with regard to promoting sustained and healthy economic development. Face complex changeable of international situation and difficult heavy of domestic reform development stable task, XI General Secretary made China economic development into new normal of science judge, proposed innovation, and coordination, and green, and open, and shared five big development concept, implementation macro policy to stability, and industry policy to associate, and micro policy to live, and reform policy to real, and social policy to backing five big pillar sex policy, vigorously advance supply side structural reform, new concept, achieved has 2013 to 2015 during, Domestic production total annual growth 7.3%, obviously fast Yu earlier world economic 2.3% of annual growth, on world economic growth of contribution over 25%, tertiary industry accounted for domestic production total share over 50%, eventually consumption on economic growth of contribution rate reached 66%, economic structure adjustment made important progress, development of quality and benefits significantly upgrade, China economic show out huge of swing room and broad of development prospects. This aspects XI General Secretary of speech main including economic growth must is real and no water of growth improve open type economic level see missing of hand and see have see of hand are to with good speed up from elements drive, and investment scale drive development mainly to to innovation drive development mainly of change active promoted China energy production and consumption revolution,. 5. with regard to building the rule of law in China. 18 big yilai, Central tightly around full advance law ruling, put party of led, and people masters, and law ruling organic unified up, insisted law ruling, and law ruling, and law administrative common advance, insisted rule of law national, and rule of law Government, and rule of law social one construction, full advance science legislation, and strictly law enforcement, and just judicial, and universal law-abiding, China features socialist legal system further sound perfect, leaders at all levels cadres using rule of law thinking and rule of law way deepening reform, and 分式单元测试卷 班级 姓名 成绩 1. 填空（每空2分，共28分）2. 当 x 时，分式的值为0；3. 当_时，二次根式有最小值，其最小值是4. 当 x 时，分式无意义；5. 在这五个实数中，无理数是_.6. 已知xy，化简为_.7. 若，则_；若，则_.8. 函数中，自变量的取值范围是_.9. 若分式的值为正，则a的取值范围为 ；10. 若分式的值为正，则a的取值范围为 11. 利用负指数幂，化成不含分母的式子；12. 用科学记数法表示：；13. 若，求代数式的值。14. 已知 ；15. 如果 （用含n的代数式表示）；16. 当时，的值为 ；17. 分式的最简公分母为 ；18. 观察下列各式： 请你将发现的规律用含自然数n(n1)的等式表示出来 19. 12已知= ；20. 已知实数满足，则= ； 二选择题（每小题2分，共20分。请把每小题正确的选项代号填入相应的位置）21. 下列分式中的最简分式是（ ） A B. ; C. ; D. .22. 若，则x等于（ ） A. x = 0 ; B. x = 1; C. x = 1; D. x = .23. 若，则（ ） A m = 4，n = 1 ；B. m = 5，n = 1 ；C. m=3 ，n = 1 ；D. m = 4，n = 1；24. 若正数a、b、c的值增加至原来3倍，则的值增加至原来的（ ） A .3倍 B. 6倍 C . 9倍 D. 值不变25. 已知一辆汽车从甲地到乙地的速度为v1，从乙地原路返回到甲地的速度为v2，则这辆汽车来回的平均速度为（ ） A. B. C. D . 26. 若关于的方程ax + 1=3x5 + b有唯一解，则（ ） A. b 6; B a 3 C . b a D . a 027. （ ） A; B. C . D. 28. 化简|-2|+的结果是（ ） A4-2 B0 C2 D429. 下列各式中，一定能成立的是（ ） A B C D30. 若式子有意义，则点P在（ ） A第一象限 B第二象限 C第三象限 D第四象限31. 能够使二次根式有意义的实数的值有（ ） A0个 B1个 C2个 D3个32.化简 A 1 B . x 1 C. D . 33.的大小关系是（ ） A. B. C. D.34. 如果1xN BM=N CMN D不确定39.化简二次根式的结果是（ ）A. B. C. D. 40.已知ab,则化简的结果正确的是（）A、B、C、D、41.化简 A 1 B . x 1 C. D . 42 .的大小关系是（ ） A. B. C. D.43. 如果1x2,则 A. 1 B. 3 C. 3 D 13 解答下列各题44. 比较与的大小.45. 化简（每小题6分，共30分） （1）、 ； （2）、 （3）、 （4）46.已知、为实数，且，求的值47.若与互为相反数，求的值是多少48. 49. 已知，计算的值。（5分）50.化简求值（每小题8分，共16分） 51. （本题6分）解关于x的方程(a 2+b 2 ) x = a2b2+2abx (ab)52. 当a为何值时，分式方程会有增根？53. （2008年，广州）实数在数轴上的位置如图所示,化简.1-154. 当时，求|2-|的值是多少？附加题：1.化简求值：2.某一工程，在工程招标时，接到甲、乙两个工程队的投标书。施工一天，需付甲工程队工程款1.5万元, 乙工程队工程款1.1万元。工程领导小组根据甲、乙两队的投标书测算：（1）甲队单独完成这项工程刚好如期完成；（2）乙队单独完成这项工程要比规定日期多用5天；（3）若甲、乙两队合做4天，余下的工程由乙队单独做也正好如期完成。在不耽误工期的前提下，你觉得哪一种施工方案最节省工程款？3. -8的立方根与16的平方根之和为 .4. 若x，y为实数，且y1则xy的值是 .5. 代数式中x的取值范围是_. 6.7. 若，则 ， .8. 在数轴上到原点距离等于的所有点所表示的数是 9. 的算术平方根是 ， 10. 观察例题： ，即， 的整数部分为2，小数部分为。请你观察上述的规律后试解下面的问题： 如果的小数部分为， 的小数部分为，求的值.11 一组按规律排列的式子：，（），其中第7个式子是 ，第个式子是 （为正整数）12 函数关系式中的自变量的取值范围是_13 9的平方根是（ ）A3 B3 C-3D8114.在、3.1415和0六个数中，无理数的个数是（ ） A4个 B个 C个 D个15. 若是49的算术平方根，则的立方根是 。16. 有这样一类题目：将化简，如果你能找到两个数m、n，使并且,则将变成开方，从而使得化简。 例如：化简仿照上例化简下列各式：（6分）（1）（2）避雷带的敷设面为曲面或带有造型面时，应反复多次的比试，避雷带应顺其造型敷设，圆钢避雷带圆钢之间的搭接处的位置应设置均布、合理、美观，且应尽量的减少搭接，搭接处如与引下线焊接处接近应设置焊接到一起，避雷带焊接时应顺直的放置到支架上，各段应受力均匀，不得有翘曲、扭转，promoted development, and The ability to resolve conflicts and constantly improve, our . 6. on the building of Socialist culture in China. A country, a nation strong, always supported by culture flourished, the inheritance and development of civilization, without culture to develop and prosper, there will be no realization of the dream of China. 18 big yilai, XI General Secretary around foster and promote Socialist core values promote China excellent traditional culture firmly master ideology work led right and discourse right, aspects do has series important speech, main including put publicity thought work do have better for achieved China dream condensed powerful moral support improve national culture soft strength foster and promote Socialist core values youth to consciously practice line Socialist core values Childhood actively cultivate and practice the core values of socialism and the partys important speech on the press conference. 7. promote the reform and development of social undertakings and social management. 18 big yilai, Central insisted put guarantees and improved livelihood as ruling acting political of starting point and foothold, Xia big pneumatic solution masses most care most directly most reality of interests problem, 3 years cumulative reduction poverty more than 50 million people, equivalent to a medium national population of total, annual added town employment more than 10 million people, starts construction supportability housing engineering near 4 million sets, built world Shang scale maximum, and cover universal of basic medical guarantees network and pension guarantees network, urban and rural residents income continued growth, The lives of the people of all ethnic groups have more on both material and spiritual thriving. This aspects XI General Secretary of speech main including promoted poverty area poverty, and speed up development let 1.3 billion people enjoys better more fair of education speed up advance housing guarantees and supply system construction always put people life security put in first bit efforts put China construction became network power insisted general national security views, go China features national security road effective maintenance national security and social settled,. 8. with regard to comprehen