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Pushing ahead, East, North, West development, facilitating shanty, complete xincheng West Road, stability and reconstruction of the street, Star Ding garden built century Garden District, subject public housing construction, heating the gas expansion accelerated implementation, Jing Rui River and bridge style line solid shaft, further expanded the town development. Beautiful country adhere to the advance and typical for a group to lead. According to ecological lay based, and industry increased income, and live upgrade civilization, and culture rich connotation of thought, caught built beautiful village, and whole village advance, and easily relocation, and five modified three built, project near 30 a; depth into ecological, and industry, and culture, and tourism, elements, high standards caught party original city Liu, and jade are Xia AO, model village, in province City set has benchmark. Four is equal benefits to promote sharing, coordinated development of various social undertakings. In the case of rigid spending slowing revenue growth, increase, financial 75% to the peoples livelihood, the masses have more access in the sharing. Cuoban something good and benefit. Adhere to the affordable, best, carefully cuoban village oil, water and heat, cultural, city and County columns practical, developments benefit families, bring more welfare to the masses. Development of social convenience. Acceptance of balanced development of compulsory education through the national assessment, the County vocational education center was named top School of vocational education in China, the third batch of national reform and development model through provincial . Five is to deepen reform and innovation to break bottlenecks and endogenous development of effective fire. As an engine of dynamism, adding reform key to adopting reform measures stress energy and break bottlenecks and promoting development. Pay close attention to the key areas of reform. Conscientiously implement the provincial deployment and cancel, adjustment, to undertake the administrative approval items according to Regulation 347 to further improve administrative efficiency continuing deepening reform for poverty alleviation, speeding up rural land right registration certification pilot project, encouraging the orderly transfer of land management, utilize the land resources, in order to promote scale management laid the Foundation. Actively cultivate the market. Firmly establish a market-oriented, nurturing family farms, industrial users, professional cooperation organization new market management main body 456, effectively improve the industry, intensive and marketization of encouraging support social capital into the small micro-credit, urban development, culture and tourism, public services and other areas, easing development shortfall. To promote mass innovation. To support the rural sector to use new thinking and new ideas, creative work incentives such as actively promoting financial intermediation, bring added 159 in non public enterprises, individually-1540, created a分式的运算 一、典型例题例1、下列分式,中最简分式的个数是( ).A.1 B.2 C.3 D.4例2.计算: 例3、 若,求的值.例4、计算(1) (2)(3) (4)例5计算:练习:1.计算:例6.计算:练习1、例7、已知,求A. B的值。针对性练习:1.计算下列各题:(1) (2).(3) (4) x1 (5)-+,(6) -(11)2已知x为整数,且为整数,求所有的符合条件的x的值的和3、混合运算: (+2) (13)、(14)、 (15)、(16) 、 (17)、 4 计算:,并求当时原式的值5、 先化简,再取一个你喜欢的数代入求值:6、 有这样一道题:“计算-x的值,其中x=2 004”甲同学把“x=2 004”错抄成“x=2 040”,但他的计算结果也正确,你说这是怎么回事?7、计算、。8、 已知=,求A、B的值. 9、 已知y1=2x,y2=,y3=,y2006=,求y1y2006的值10、 .已知=,求的值.11. 若xy=4,xy=3,求+的值. 12、若x=3,求的值.13、 已知:则 。 已知:a3a+1=0则a+= a+= .14、已知x2+4y2-4x+4y+5=0,求()2的值.16. 已知a2+10a+25=b3,求代数式的值17、若,则 。18、若;则 。19、若 。20、 。21、 。22、 。23、已知 。24、若 。25、 。26、若= 27、已知:,求分式的值:28. 甲、乙两人从两地同时出发,若相向而行,则a小时相遇;若同向而行,则b小时甲追上乙,那么甲的速度是乙的速度的( )A.倍 B. C.倍 D. 倍29. 观察如图1的图形(每个正方形的边长均为1)和相应的等式,探究其中的规律: 1=1 2=2 3=34=4(1) 写出第五个等式,并在图2给出的五个正方形上画出与之对应的图形;(2) 猜想并写出与第n个图形相对应的等式.(数形结合,根据规律画图,由特殊到一般找出分式的表达式)30.观察下面一列有规律的数:,根据其规律可知第n个数应是 _ (n为整数)31、一水池有甲乙两个进水管,若单独开甲、乙管各需要a小时、b小时可注满空池;现两管同时打开,那么注满空池的时间是( )(A) (B) (C) (D)32、汽车从甲地开往乙地,每小时行驶km,t小时可以到达,如果每小时多行驶km,那么可以提前到达的小时数为 ( )(A) (B) (C) (D)33、在一段坡路,小明骑自行车上坡的速度为V1(km/h)下坡时的速度为V2,(km/h),则他在这段路上、下坡的平均速度为( ) A. B. C. D. 无法确定34、一件工作,甲独做a小时完成,乙独做b小时完成,则甲、乙两人合作完成需要( )小时.A. B. C. D.35、若已知分式的值为0,则x2的值为( ) A.或1 B. 或1 C.1 D.11计算:(1) (2)(2m2n2)2(3m1n3)32 计算: 3化简:4 化简: 5计算:6化简(x29) 7计算
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