八年级下册数学期末考试题

八年级下册数学期末考 试题 中考模拟试题doc幼小衔接 数学试题 下载云南高中历年会考数学试题下载N4真题下载党史题库下载 八年级下册数学期末测试题 (时间90分钟) 姓名________________ 班级________________ 分数________________ 一、选择题(每题2分，共22分) 1、下列各式中，分式的个数有( C ) 221b2x，y1(x,y)x,115,、、、、，a、、、 2,,23,m,2x112a，1(x，y) A、2个 B、3个 C、4个 D、5个 2、下列计算中，正确的是 ,C , 0,122a,b311133,,,,A(= B(+= C(=a+b D(=0 ,,,,,,2aba，ba,b220,,,, 3、正方形具有菱形不一定具有的性质是(C ) A(对角线互相垂直 B(对角线互相平分 C(对角线相等 D(对角线平分一组对角 4、一棵大树在一次强台风中于离地面5米处折断倒下，倒下部分与地面成30?夹角，这棵大树在折断前的高度为( B ) A(10米 B(15米 C(25米 D(30米 25、如果三角形的面积为18cm，那么它的底边y(cm)与高x(cm)之间的 函数 excel方差函数excelsd函数已知函数     2 f x m x mx m      2 1 4 2拉格朗日函数pdf函数公式下载 关系用下列图象 表 关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf 示大致是( C ) A B C D 11,x6、把分式方程的两边同时乘以(x,2), 约去分母，得( ) ,,1x,22,x A(1,(1,x)=1 B(1+(1,x)=1 C(1,(1,x)=x,2 D(1+(1,x)=x,2 7、如图，正方形网格中的?ABC，若小方格边长为1，则?ABC是(A ) A、直角三角形 B、锐角三角形 C、钝角三角形 D、 以上答案都不对 D C B C 97. [12] Hui Qing. Disseny i construcció d'edifici detallat Atlas [m]. Premeu Xina arquitectura i construcció, 2003. [13] redactor en cap Liu Zongren. excavació [m]. Harbin Institut de tecnologia de premsa, 2008. [14] yang Keji et. pràctica pila [m]. comunicacions del poble editorial, 2004. [15] cuijiangyuliangrenwang editat. edifici Fundació pou Enginyeria de disseny i construcció de [m]. Xina de construcció material indústria casa editorial, 1999. [16] escrit per Yu zhicheng Shi Wenhua. disseny i construcció de profunda fossa el suport Fundació [m]. Xina arquitectura i construcció premsa 1997. [17] Wang Weidong Wang Jianhua amb. Suport a estructura per profund pou Fundació amb l'estructura principal [m]. Xina arquitectura i construcció premsa. 2007. [18] escrit Huang Qiang. tecnologia de suport de pou de Fundació profunda Enginyeria disseny [m]. material indústria premsa 2000 edificis de Xina. [19] escrit Gong Xiaonan Gao Youchao. construcció de profunda fossa Fundació Enginyeria Manual [m]. Premeu Xina arquitectura i construcció, 1998. [20] escrit Huang Yunfei. Fundació pou tecnologia profunda [m]. armes indústria editorial, 1996. [21] gong Xiaonan Ed. Universitat llibre mecànica de sòls [m]. Xina arquitectura i construcció premsa. 2008. [22] redactor en cap Li Liankun. estructural mecànica [m]. premsa d'educació superior. 2008. [23] Clough G.W, Dunean J.M. finits Element anàlisis de retenir wa11 comportament [J]. ASCE, 1971, 165-167 [24] Andrew J.W, Youssef M.A. Anàlisi d'excavació profunda a Boston [J]. Revista d'EnginAccording to practical problems in the construction, organized by the project manager once a week wrap-up session, which reads as follows: a construction programme, implementation of the construction plan summary; B Summary of the implementation of security, quality and technical standards; C summary of work this week, jiangyoufalie; D Organization of work for the next week. In order to ensure progress and quality, also held regular meetings, invited the representatives of the owner, installed captain and his party, the coordination of all aspects of the project, communication, meeting minutes, returned to the General Manager of the company, so that the whole arrangement. This engineering outside decorative construction cycle full standard paragraph for 60 calendar day, I company has many similar engineering also duration of actual engineering construction experience, I company will plans arrangements 100 name construction labor in site is responsible for installation construction, addition full standard paragraph organization at least 50 people above of prepared team according to site actual construction please condition flexible adjustment progress, most key of is most of material processing surface ornaments board processing are in I company processing workshop for, such and can guarantee processing quality and can reduced site job environment and ensure installation progress , The project skeleton completed plans installation period of 35 days, install side trim Panel plans to use 48 days installation period, all other nodes are included in the framework of construction and surface trim install the appropriate construction. 9, finished product testing, after the installation of protective measures, different materials, different techniques, different parts of finished and semi-finished products correspond to measures of protection, work product protection. To sum up, as an A B A (第7题) (第8题) (第9题) 8、如图，等腰梯形ABCD中，AB?DC，AD=BC=8，AB=10，CD=6，则梯形ABCD的面积是 ( ) A、 B、 C、 D、 1615165321516179、如图，一次函数与反比例函数的图像相交于A、B两点，则图中使反比例函数的值小于一 次函数的值的x的取值范围是( ) A、x,,1 B、x,2 C、,1,x,0，或x,2 D、x,,1，或0,x,2 10、5月12日，一场突如其来的强烈地震给我省汶川等地带来了巨大的灾难，“一方有难，八方支援”，某校九年级二班45名同学在学校举行的“爱心涌动校园”募捐活动中捐款情况如下表所示: 捐款数(元) 10 20 30 40 50 捐款人数(人) 8 17 16 2 2 则对全班捐款的45个数据，下列说法错误的是( ) (( A、中位数是30元 B、众数是20元 C、平均数是24元 D、极差是40元 11、李大伯承包了一个果园，种植了100棵樱桃树，今年已进入收获期。收获时，从中任选 并采摘了10棵树的樱桃，分别称得每棵树所产樱桃的质量如下表: 序号 1 2 3 4 5 6 7 8 9 10 质量(千克) 14 21 27 17 18 20 19 23 19 22 据调查，市场上今年樱桃的批发价格为每千克15元。用所学的统计知识估计今年此果园樱桃的总产量与按批发价格销售樱桃所得的总收入分别约为( ) A. 2000千克，3000元 B. 1900千克，28500元 C. 2000千克，30000元 D. 1850千克，27750元 二、填空题(每题3分，共24分) 112、当x 时，分式有意义 x,5 111x,,,13、各分式的最简公分母是_________________ 222xxxxx,,，，121 ky,14、如图3所示，设A为反比例函数图象上一点，且矩形ABOC的面积为3，则这个x 反比例函数解析式为 。 ABCDAD//BCAB,CD,AD,1，B,60:MNABCD15、梯形中，，，直线为梯形 97. [12] Hui Qing. Disseny i construcció d'edifici detallat Atlas [m]. Premeu Xina arquitectura i construcció, 2003. [13] redactor en cap Liu Zongren. excavació [m]. Harbin Institut de tecnologia de premsa, 2008. [14] yang Keji et. pràctica pila [m]. comunicacions del poble editorial, 2004. [15] cuijiangyuliangrenwang editat. edifici Fundació pou Enginyeria de disseny i construcció de [m]. Xina de construcció material indústria casa editorial, 1999. [16] escrit per Yu zhicheng Shi Wenhua. disseny i construcció de profunda fossa el suport Fundació [m]. Xina arquitectura i construcció premsa 1997. [17] Wang Weidong Wang Jianhua amb. Suport a estructura per profund pou Fundació amb l'estructura principal [m]. Xina arquitectura i construcció premsa. 2007. [18] escrit Huang Qiang. tecnologia de suport de pou de Fundació profunda Enginyeria disseny [m]. material indústria premsa 2000 edificis de Xina. [19] escrit Gong Xiaonan Gao Youchao. construcció de profunda fossa Fundació Enginyeria Manual [m]. Premeu Xina arquitectura i construcció, 1998. [20] escrit Huang Yunfei. Fundació pou tecnologia profunda [m]. armes indústria editorial, 1996. [21] gong Xiaonan Ed. Universitat llibre mecànica de sòls [m]. Xina arquitectura i construcció premsa. 2008. [22] redactor en cap Li Liankun. estructural mecànica [m]. premsa d'educació superior. 2008. [23] Clough G.W, Dunean J.M. finits Element anàlisis de retenir wa11 comportament [J]. ASCE, 1971, 165-167 [24] Andrew J.W, Youssef M.A. Anàlisi d'excavació profunda a Boston [J]. Revista d'EnginAccording to practical problems in the construction, organized by the project manager once a week wrap-up session, which reads as follows: a construction programme, implementation of the construction plan summary; B Summary of the implementation of security, quality and technical standards; C summary of work this week, jiangyoufalie; D Organization of work for the next week. In order to ensure progress and quality, also held regular meetings, invited the representatives of the owner, installed captain and his party, the coordination of all aspects of the project, communication, meeting minutes, returned to the General Manager of the company, so that the whole arrangement. This engineering outside decorative construction cycle full standard paragraph for 60 calendar day, I company has many similar engineering also duration of actual engineering construction experience, I company will plans arrangements 100 name construction labor in site is responsible for installation construction, addition full standard paragraph organization at least 50 people above of prepared team according to site actual construction please condition flexible adjustment progress, most key of is most of material processing surface ornaments board processing are in I company processing workshop for, such and can guarantee processing quality and can reduced site job environment and ensure installation progress , The project skeleton completed plans installation period of 35 days, install side trim Panel plans to use 48 days installation period, all other nodes are included in the framework of construction and surface trim install the appropriate construction. 9, finished product testing, after the installation of protective measures, different materials, different techniques, different parts of finished and semi-finished products correspond to measures of protection, work product protection. To sum up, as an MNPC，PD的对称轴，为上一点，那么的最小值 。 P M A D B C N (第15题) (第16题) (第17题) 016、如图，在菱形ABCD中，?,,，E、F分别是AB、AD的中点，若EF=2,，则菱形60 ABCD的边长是 。 17、如图，BD是ABCD的对角线，点E、F在BD上，要使四边形AECF是平行四边形，还需要增加的一个条件是 。(填上一个你认为正确的即可) 18、小林在初三第一学期的数学 书 关于书的成语关于读书的排比句社区图书漂流公约怎么写关于读书的小报汉书pdf 面测验成绩分别为:平时考试第一单元得84分，第二单元得76分，第三单元得92分;期中考试得82分;期末考试得90分.如果按照平时、期中、期末的权重分别为10%、30%、60%计算，那么小林该学期数学书面测验的总评成绩应为_____________分。 19、在直线l上依次摆放着七个正方形(如图所示)。已知斜放置的三个正方形的面积分别是1、2、3，正放置的四个正方形的面积依次是S、S、S、S，则S，S，S，S,_______。 12341234 3 21S4S3SS21l 三、解答题(共74分) 32xxx,,20、(9分)先化简，再求值:然后请你任意先择一个你所喜欢,,，,,2xxx,，,224,, x的的值(要合适哦～)代入求值( x,216x，2,,21、(8分)解方程: 2x，2x,2x,4 97. [12] Hui Qing. Disseny i construcció d'edifici detallat Atlas [m]. Premeu Xina arquitectura i construcció, 2003. [13] redactor en cap Liu Zongren. excavació [m]. Harbin Institut de tecnologia de premsa, 2008. [14] yang Keji et. pràctica pila [m]. comunicacions del poble editorial, 2004. [15] cuijiangyuliangrenwang editat. edifici Fundació pou Enginyeria de disseny i construcció de [m]. Xina de construcció material indústria casa editorial, 1999. [16] escrit per Yu zhicheng Shi Wenhua. disseny i construcció de profunda fossa el suport Fundació [m]. Xina arquitectura i construcció premsa 1997. [17] Wang Weidong Wang Jianhua amb. Suport a estructura per profund pou Fundació amb l'estructura principal [m]. Xina arquitectura i construcció premsa. 2007. [18] escrit Huang Qiang. tecnologia de suport de pou de Fundació profunda Enginyeria disseny [m]. material indústria premsa 2000 edificis de Xina. [19] escrit Gong Xiaonan Gao Youchao. construcció de profunda fossa Fundació Enginyeria Manual [m]. Premeu Xina arquitectura i construcció, 1998. [20] escrit Huang Yunfei. Fundació pou tecnologia profunda [m]. armes indústria editorial, 1996. [21] gong Xiaonan Ed. Universitat llibre mecànica de sòls [m]. Xina arquitectura i construcció premsa. 2008. [22] redactor en cap Li Liankun. estructural mecànica [m]. premsa d'educació superior. 2008. [23] Clough G.W, Dunean J.M. finits Element anàlisis de retenir wa11 comportament [J]. ASCE, 1971, 165-167 [24] Andrew J.W, Youssef M.A. Anàlisi d'excavació profunda a Boston [J]. Revista d'EnginAccording to practical problems in the construction, organized by the project manager once a week wrap-up session, which reads as follows: a construction programme, implementation of the construction plan summary; B Summary of the implementation of security, quality and technical standards; C summary of work this week, jiangyoufalie; D Organization of work for the next week. In order to ensure progress and quality, also held regular meetings, invited the representatives of the owner, installed captain and his party, the coordination of all aspects of the project, communication, meeting minutes, returned to the General Manager of the company, so that the whole arrangement. This engineering outside decorative construction cycle full standard paragraph for 60 calendar day, I company has many similar engineering also duration of actual engineering construction experience, I company will plans arrangements 100 name construction labor in site is responsible for installation construction, addition full standard paragraph organization at least 50 people above of prepared team according to site actual construction please condition flexible adjustment progress, most key of is most of material processing surface ornaments board processing are in I company processing workshop for, such and can guarantee processing quality and can reduced site job environment and ensure installation progress , The project skeleton completed plans installation period of 35 days, install side trim Panel plans to use 48 days installation period, all other nodes are included in the framework of construction and surface trim install the appropriate construction. 9, finished product testing, after the installation of protective measures, different materials, different techniques, different parts of finished and semi-finished products correspond to measures of protection, work product protection. To sum up, as an 22、(10分)如图，已知四边形ABCD是平行四边形，?BCD的平分线CF交边AB于F，?ADC的平分线DG交边AB于G。 (1)求证:AF=GB;(2)请你在已知条件的基础上再添加一个条件，使得?EFG为等腰直角三角形,并说明理由( 23((10分)振兴中学某班的学生对本校学生会倡导的“抗震救灾，众志成城”自愿捐款活动进行抽样调查，得到了一组学生捐款情况的数据(下图是根据这组数据绘制的统计图，图中从左到右各长方形的高度之比为3:4:5:8:6，又知此次调查中捐款25元和30元的学生一共42人( (1)他们一共调查了多少人, (2)这组数据的众数、中位数各是多少, (3)若该校共有1560名学生，估计全校学生 捐款多少元, m 24、(10分)如图，一次函数y=kx+b的图像与反比例函数y=的图像相交于A、B两点， x (1)利用图中条件，求反比例函数和一次函数的解析式; (2)求?AOB的面积, 97. [12] Hui Qing. Disseny i construcció d'edifici detallat Atlas [m]. Premeu Xina arquitectura i construcció, 2003. [13] redactor en cap Liu Zongren. excavació [m]. Harbin Institut de tecnologia de premsa, 2008. [14] yang Keji et. pràctica pila [m]. comunicacions del poble editorial, 2004. [15] cuijiangyuliangrenwang editat. edifici Fundació pou Enginyeria de disseny i construcció de [m]. Xina de construcció material indústria casa editorial, 1999. [16] escrit per Yu zhicheng Shi Wenhua. disseny i construcció de profunda fossa el suport Fundació [m]. Xina arquitectura i construcció premsa 1997. [17] Wang Weidong Wang Jianhua amb. Suport a estructura per profund pou Fundació amb l'estructura principal [m]. Xina arquitectura i construcció premsa. 2007. [18] escrit Huang Qiang. tecnologia de suport de pou de Fundació profunda Enginyeria disseny [m]. material indústria premsa 2000 edificis de Xina. [19] escrit Gong Xiaonan Gao Youchao. construcció de profunda fossa Fundació Enginyeria Manual [m]. Premeu Xina arquitectura i construcció, 1998. [20] escrit Huang Yunfei. Fundació pou tecnologia profunda [m]. armes indústria editorial, 1996. [21] gong Xiaonan Ed. Universitat llibre mecànica de sòls [m]. Xina arquitectura i construcció premsa. 2008. [22] redactor en cap Li Liankun. estructural mecànica [m]. premsa d'educació superior. 2008. [23] Clough G.W, Dunean J.M. finits Element anàlisis de retenir wa11 comportament [J]. ASCE, 1971, 165-167 [24] Andrew J.W, Youssef M.A. Anàlisi d'excavació profunda a Boston [J]. Revista d'EnginAccording to practical problems in the construction, organized by the project manager once a week wrap-up session, which reads as follows: a construction programme, implementation of the construction plan summary; B Summary of the implementation of security, quality and technical standards; C summary of work this week, jiangyoufalie; D Organization of work for the next week. In order to ensure progress and quality, also held regular meetings, invited the representatives of the owner, installed captain and his party, the coordination of all aspects of the project, communication, meeting minutes, returned to the General Manager of the company, so that the whole arrangement. This engineering outside decorative construction cycle full standard paragraph for 60 calendar day, I company has many similar engineering also duration of actual engineering construction experience, I company will plans arrangements 100 name construction labor in site is responsible for installation construction, addition full standard paragraph organization at least 50 people above of prepared team according to site actual construction please condition flexible adjustment progress, most key of is most of material processing surface ornaments board processing are in I company processing workshop for, such and can guarantee processing quality and can reduced site job environment and ensure installation progress , The project skeleton completed plans installation period of 35 days, install side trim Panel plans to use 48 days installation period, all other nodes are included in the framework of construction and surface trim install the appropriate construction. 9, finished product testing, after the installation of protective measures, different materials, different techniques, different parts of finished and semi-finished products correspond to measures of protection, work product protection. To sum up, as an 25、(12分)E是正方形ABCD的对角线BD上一点，EF?BC，EG?CD，垂足分别是F、G. 求证:AE=FG G D C E F B A 97. [12] Hui Qing. Disseny i construcció d'edifici detallat Atlas [m]. Premeu Xina arquitectura i construcció, 2003. [13] redactor en cap Liu Zongren. excavació [m]. Harbin Institut de tecnologia de premsa, 2008. [14] yang Keji et. pràctica pila [m]. comunicacions del poble editorial, 2004. [15] cuijiangyuliangrenwang editat. edifici Fundació pou Enginyeria de disseny i construcció de [m]. Xina de construcció material indústria casa editorial, 1999. [16] escrit per Yu zhicheng Shi Wenhua. disseny i construcció de profunda fossa el suport Fundació [m]. Xina arquitectura i construcció premsa 1997. [17] Wang Weidong Wang Jianhua amb. Suport a estructura per profund pou Fundació amb l'estructura principal [m]. Xina arquitectura i construcció premsa. 2007. [18] escrit Huang Qiang. tecnologia de suport de pou de Fundació profunda Enginyeria disseny [m]. material indústria premsa 2000 edificis de Xina. [19] escrit Gong Xiaonan Gao Youchao. construcció de profunda fossa Fundació Enginyeria Manual [m]. Premeu Xina arquitectura i construcció, 1998. [20] escrit Huang Yunfei. Fundació pou tecnologia profunda [m]. armes indústria editorial, 1996. [21] gong Xiaonan Ed. Universitat llibre mecànica de sòls [m]. Xina arquitectura i construcció premsa. 2008. [22] redactor en cap Li Liankun. estructural mecànica [m]. premsa d'educació superior. 2008. [23] Clough G.W, Dunean J.M. finits Element anàlisis de retenir wa11 comportament [J]. ASCE, 1971, 165-167 [24] Andrew J.W, Youssef M.A. Anàlisi d'excavació profunda a Boston [J]. Revista d'EnginAccording to practical problems in the construction, organized by the project manager once a week wrap-up session, which reads as follows: a construction programme, implementation of the construction plan summary; B Summary of the implementation of security, quality and technical standards; C summary of work this week, jiangyoufalie; D Organization of work for the next week. In order to ensure progress and quality, also held regular meetings, invited the representatives of the owner, installed captain and his party, the coordination of all aspects of the project, communication, meeting minutes, returned to the General Manager of the company, so that the whole arrangement. This engineering outside decorative construction cycle full standard paragraph for 60 calendar day, I company has many similar engineering also duration of actual engineering construction experience, I company will plans arrangements 100 name construction labor in site is responsible for installation construction, addition full standard paragraph organization at least 50 people above of prepared team according to site actual construction please condition flexible adjustment progress, most key of is most of material processing surface ornaments board processing are in I company processing workshop for, such and can guarantee processing quality and can reduced site job environment and ensure installation progress , The project skeleton completed plans installation period of 35 days, install side trim Panel plans to use 48 days installation period, all other nodes are included in the framework of construction and surface trim install the appropriate construction. 9, finished product testing, after the installation of protective measures, different materials, different techniques, different parts of finished and semi-finished products correspond to measures of protection, work product protection. To sum up, as an 0ABCD26、(12分)如图，在直角梯形中， AD//BC,，B,90,AD,24cm,AB,8cm,BC,26cm1cm/sC，动点从开始沿边向以的速度运动;动点从点开始沿PAADDQCB3cm/s边向以的速度运动。、分别从点、C同时出发，当其中一点到达端点BPAQ 时，另外一点也随之停止运动，设运动时间为。 ts (1)当为何值时，四边形平行为四边形, PQCDt (2)当为何值时，四边形为等腰梯形, PQCDt (3)当为何值时，四边形为直角梯形, PQCDt 97. [12] Hui Qing. Disseny i construcció d'edifici detallat Atlas [m]. Premeu Xina arquitectura i construcció, 2003. [13] redactor en cap Liu Zongren. excavació [m]. Harbin Institut de tecnologia de premsa, 2008. [14] yang Keji et. pràctica pila [m]. comunicacions del poble editorial, 2004. [15] cuijiangyuliangrenwang editat. edifici Fundació pou Enginyeria de disseny i construcció de [m]. Xina de construcció material indústria casa editorial, 1999. [16] escrit per Yu zhicheng Shi Wenhua. disseny i construcció de profunda fossa el suport Fundació [m]. Xina arquitectura i construcció premsa 1997. [17] Wang Weidong Wang Jianhua amb. Suport a estructura per profund pou Fundació amb l'estructura principal [m]. Xina arquitectura i construcció premsa. 2007. [18] escrit Huang Qiang. tecnologia de suport de pou de Fundació profunda Enginyeria disseny [m]. material indústria premsa 2000 edificis de Xina. [19] escrit Gong Xiaonan Gao Youchao. construcció de profunda fossa Fundació Enginyeria Manual [m]. Premeu Xina arquitectura i construcció, 1998. [20] escrit Huang Yunfei. Fundació pou tecnologia profunda [m]. armes indústria editorial, 1996. [21] gong Xiaonan Ed. Universitat llibre mecànica de sòls [m]. Xina arquitectura i construcció premsa. 2008. [22] redactor en cap Li Liankun. estructural mecànica [m]. premsa d'educació superior. 2008. [23] Clough G.W, Dunean J.M. finits Element anàlisis de retenir wa11 comportament [J]. ASCE, 1971, 165-167 [24] Andrew J.W, Youssef M.A. Anàlisi d'excavació profunda a Boston [J]. Revista d'EnginAccording to practical problems in the construction, organized by the project manager once a week wrap-up session, which reads as follows: a construction programme, implementation of the construction plan summary; B Summary of the implementation of security, quality and technical standards; C summary of work this week, jiangyoufalie; D Organization of work for the next week. In order to ensure progress and quality, also held regular meetings, invited the representatives of the owner, installed captain and his party, the coordination of all aspects of the project, communication, meeting minutes, returned to the General Manager of the company, so that the whole arrangement. This engineering outside decorative construction cycle full standard paragraph for 60 calendar day, I company has many similar engineering also duration of actual engineering construction experience, I company will plans arrangements 100 name construction labor in site is responsible for installation construction, addition full standard paragraph organization at least 50 people above of prepared team according to site actual construction please condition flexible adjustment progress, most key of is most of material processing surface ornaments board processing are in I company processing workshop for, such and can guarantee processing quality and can reduced site job environment and ensure installation progress , The project skeleton completed plans installation period of 35 days, install side trim Panel plans to use 48 days installation period, all other nodes are included in the framework of construction and surface trim install the appropriate construction. 9, finished product testing, after the installation of protective measures, different materials, different techniques, different parts of finished and semi-finished products correspond to measures of protection, work product protection. To sum up, as an