《最新七年级下数学期中试卷结构分析优秀名师资料.doc》由会员分享，可在线阅读，更多相关《最新七年级下数学期中试卷结构分析优秀名师资料.doc（43页珍藏版）》请在三一文库上搜索。
1、七年级下数学期中试卷结构分析七年级下期末试卷总的结构分为三大类:选择题、填空题、解答题。 选择题大概有810题，涉及的知识范围有:代数式的系数与次数;单项式的判断;图形平移;平行线的性质与条件(四个条件是什么,哪三个性质,);三角形的三边关系(两边之和大于第三边，两。边之差小于第三边);多边形的内角和公式(180*(n-2);多边。形的外角和(360);多边形的对角线条数;三角形的高、中线、角平分线(高、中线、角平分线的画法);角度数的求解;三角形的稳定性;简单幂的运算(同底数幂的乘法法则);单项式乘单项式;求图形的面积;二元一次方程的定义(判断给定代数式是否为二元一次方程);解方程组的方法(
2、极简单的解二元一次方程组);简单二元一次方程组的应用等。 填空题大概有810题，涉及的知识点范围有:单项式;二元一次方程的定义;幂的运算(四个法则的综合运用);三角形的外角和;多边形的内角和;多边形的对角线条数;解二元一次方程组(比较简单的);二元一次方程组的应用;求图形的面积;求角的度数;平行直线的性质与条件;小的探究性题目等。 解答题大概有五大题，涉及的知识点范围:化简代数式(幂运算的四个法则综合运用);解二元一次方程组(两种解法:代入消元法、加减消元法);三角形内角和与外角和的综合运用;求角的度数(平行直线的性质与条件、角平分线、外角性质、对顶角等的综合运用);should be tig
3、htened, no loose, Terminal Board wiring should be one on each side, no more than two. J, shielded wire, spare wire binding order, reliable grounding. 7.7 quality standard 7.7.l cables through the cable embedded tube making use of galvanized steel pipe, tube ends without burrs, smooth. 7.7.2 pipe doe
4、s not allow bending, bending the bend radius should be ? 4 times times the outer diameter of the tube in. 7.7.3 ellipticity of a bent tube, pipe diameter ? 60mm, not 8%, diameter 760mm, not 6%. 7.7.4 making cables buried piping application root production, growing where interface is required, only s
5、traight pipe, only the wire port connections, welded connections are not allowed. 7.7.5 service sleeve should have a good grounding. 7.7.6 cable trays installation, burrs and dirt and corrosion treatment should be carried out, install the bridge . 7.8.1.7 piping and piping, equipment and equipment o
6、r piping and other equipment shall have sufficient expansion gap in hot situations. 7.8.1.8 metal temperature of the insulating layer (hot) = shell-wall temperature of environment temperature ? 40 ? c. 7.8.2 paint 7.8.2.l paint of equipment and pipelines should have at least a primer (red paint) and
7、 finish. 7.8.2.2 paint appearance color uniform, without paint, rust, flaking, wrinkles, flow marks, scum, paint particles and visible brush marks. 7.8.2.3 interlayer should be tight and without stratification. 7.8.2.4 pipelines asphalt, fiber glass fabric corrosion, external appearance should never
8、 show surrounded by glass fiber cloth uniform, dense, painted pitch inspection should be no delamination, cavitation, homogeneity of asphalt coating, brushing each layer thickness in accordance with design requirements. Standard 7.9 7.9 structure placement process. 1 fair-faced concrete is a concret
9、e surface without any decoration, structure appearance quality of concrete structure that is able to display strength and aesthetic perception of quality standards. Construction technology requirements are as follows: template template Panel selection and processing require plate high strength, good
10、 toughness and 证明题(角相等、求证直线平行等)、二元一次方程组的应用、探究性题目等。 附加题大概是两道，涉及的知识点主要是两方面:一方面，二元一次方程组的应用;另一方面，与平面图形的认识相结合的探究性题目。 一、 选择题(810题) 16题:单项式(系数与次数);平行直线的的性质与条件(同位角、内错角、同旁内角);图形平移;三角形的三边关系(两边之和大于第三边，两边之差小于第三边);二元一次方程定义;幂的运算(同底数幂的乘法法则);三角形的高、中线、角平分线;角度的计算;三角形的内角和;多边形的内角和;多边形的外角和;多边形的外角性质;单项式与单项式相乘、单项式与多项式相乘、多
11、项式与多项式相乘;科学计数法等。 1、例题: 12abc、,7x，1、y，1,、0,、,5m(1)代数式: ,中单项式共有( )个. 2A(1个 B(2个 C(3个 D(4个 12,ab(2)单项式的系数和次数分别为( ) 21111A. - ，2 B.- ，3 C.，2 D. ，3 2222ab2adx,y(3)在代数式:， ,2， 0，,中，单项式共有( )个 33A 3 B 4 C 5 D 6 分析:单项式(系数与次数)。 2、例题: (1)下列命题是真命题的是( ) should be tightened, no loose, Terminal Board wiring should
12、be one on each side, no more than two. J, shielded wire, spare wire binding order, reliable grounding. 7.7 quality standard 7.7.l cables through the cable embedded tube making use of galvanized steel pipe, tube ends without burrs, smooth. 7.7.2 pipe does not allow bending, bending the bend radius sh
13、ould be ? 4 times times the outer diameter of the tube in. 7.7.3 ellipticity of a bent tube, pipe diameter ? 60mm, not 8%, diameter 760mm, not 6%. 7.7.4 making cables buried piping application root production, growing where interface is required, only straight pipe, only the wire port connections, w
14、elded connections are not allowed. 7.7.5 service sleeve should have a good grounding. 7.7.6 cable trays installation, burrs and dirt and corrosion treatment should be carried out, install the bridge . 7.8.1.7 piping and piping, equipment and equipment or piping and other equipment shall have suffici
15、ent expansion gap in hot situations. 7.8.1.8 metal temperature of the insulating layer (hot) = shell-wall temperature of environment temperature ? 40 ? c. 7.8.2 paint 7.8.2.l paint of equipment and pipelines should have at least a primer (red paint) and finish. 7.8.2.2 paint appearance color uniform
16、, without paint, rust, flaking, wrinkles, flow marks, scum, paint particles and visible brush marks. 7.8.2.3 interlayer should be tight and without stratification. 7.8.2.4 pipelines asphalt, fiber glass fabric corrosion, external appearance should never show surrounded by glass fiber cloth uniform,
17、dense, painted pitch inspection should be no delamination, cavitation, homogeneity of asphalt coating, brushing each layer thickness in accordance with design requirements. Standard 7.9 7.9 structure placement process. 1 fair-faced concrete is a concrete surface without any decoration, structure app
18、earance quality of concrete structure that is able to display strength and aesthetic perception of quality standards. Construction technology requirements are as follows: template template Panel selection and processing require plate high strength, good toughness and A、两直线相交，同位角相等。B、两直线平行，同位角相等 C、两直
19、线相交，对顶角互补。D、邻补角的和是90度。 (2)下列说法正确的是( ) A 相等的角是对顶角 B 同位角相等 C 两直线平行，同旁内角相等 D 同角的余角相等 分析:平行直线的的性质与条件(同位角、内错角、同旁内角)。 3、例题: (1)下列生活中物体的运动:?在笔直公路上行驶的汽车。?摆动的时钟钟摆。?随风飘动的旗帜。?摇动的大绳 。?汽车前玻璃的雨刷的运动。?从档顶自由落下的球。属于平移的个数为( ) A 、1个 B、2个 C、3个 D、4个 (2)下列现象是数学中平移的是 A 树叶从树上落下 B 电梯由一楼升至顶楼 C 碟片在光躯中运行 D 卫星绕地球运动 (3)下列各组图形中可经过
20、平移变换由一个图形得到另外一个图形的是( ) M B D A C (4)如图是“福娃欢欢”的五幅图案，?、?、?、?哪一个图案可以通过平移图案?得到( ) A、? B、? C、? D、? 分析:图形平移。 4、例题: (1)将下列长度的三条线段首尾顺次相接，能组成三角形的是( ) A、4cm 3cm 5cm B、1cm 2cm 3cm C、25cm 12cm 11cm D、2cm 2cm 4cm a,1a(2)已知三角形的三边分别为2，4那么的取值范围是 ( ) 1,a,52,a,63,a,74,a,6 A( B( C( D( a-b-ca，c-bc-a-b(3)若a、b、c是?ABC的三边，
21、化简+ =( ) A、a+b-c B. a-b+c C. a+b+c D. a-b-c should be tightened, no loose, Terminal Board wiring should be one on each side, no more than two. J, shielded wire, spare wire binding order, reliable grounding. 7.7 quality standard 7.7.l cables through the cable embedded tube making use of galvanized st
22、eel pipe, tube ends without burrs, smooth. 7.7.2 pipe does not allow bending, bending the bend radius should be ? 4 times times the outer diameter of the tube in. 7.7.3 ellipticity of a bent tube, pipe diameter ? 60mm, not 8%, diameter 760mm, not 6%. 7.7.4 making cables buried piping application roo
23、t production, growing where interface is required, only straight pipe, only the wire port connections, welded connections are not allowed. 7.7.5 service sleeve should have a good grounding. 7.7.6 cable trays installation, burrs and dirt and corrosion treatment should be carried out, install the brid
24、ge . 7.8.1.7 piping and piping, equipment and equipment or piping and other equipment shall have sufficient expansion gap in hot situations. 7.8.1.8 metal temperature of the insulating layer (hot) = shell-wall temperature of environment temperature ? 40 ? c. 7.8.2 paint 7.8.2.l paint of equipment an
25、d pipelines should have at least a primer (red paint) and finish. 7.8.2.2 paint appearance color uniform, without paint, rust, flaking, wrinkles, flow marks, scum, paint particles and visible brush marks. 7.8.2.3 interlayer should be tight and without stratification. 7.8.2.4 pipelines asphalt, fiber
26、 glass fabric corrosion, external appearance should never show surrounded by glass fiber cloth uniform, dense, painted pitch inspection should be no delamination, cavitation, homogeneity of asphalt coating, brushing each layer thickness in accordance with design requirements. Standard 7.9 7.9 struct
27、ure placement process. 1 fair-faced concrete is a concrete surface without any decoration, structure appearance quality of concrete structure that is able to display strength and aesthetic perception of quality standards. Construction technology requirements are as follows: template template Panel s
28、election and processing require plate high strength, good toughness and b(4)、为三角形的三边长，化简，a，b，c,a,b,c,a,b，c,a，b,cac结果是 ( ) 2a，2b，2c4a2b,2c A、0 B、 C、 D、 分析:三角形的三边关系(两边之和大于第三边，两边之差小于第三边)。 5、例题: 12(1)方程2x,=0，3x+y=0，2x+xy=1，3x+y,2x=0，x,x+1=0中，二元一次方程的y个数是( ) A(1个 B(2个 C(3个 D(4个 xy(2)由,1，可以得到用表示的式子是( ) yx3
29、222x,21x2x2x A(y, B( C(y,2 D(y,2 y,33333(3) 下列不是二元一次方程组的是( ) 1,436xy，,xy，,43525xy，,，,y4, A( B( C( D( x,xy,4xy，,102524xy，,xy,1,分析:二元一次方程定义 6、例题: 522(1)计算的结果，正确的是( ) (,a).(a)99,aaA. B.,a C. D. a(2)下列运算不正确的是( ) 32325235 326a,a,aa，a,aa,a,a A( B(C( D( (a),a3211(3)在等式a?a?( ),a中，括号里面的代数式应当是 ( ) 7 8 6 3A(aB
30、(aC(aD(a 分析:幂的运算(同底数幂的乘法法则) 7、例题: A(1)如图，能表示点到直线距离的的( ) CBshould be tightened, no loose, Terminal Board wiring should be one on each side, no more than two. J, shielded wire, spare wire binding order, reliable grounding. 7.7 quality standard 7.7.l cables through the cable embedded tube making use of
31、 galvanized steel pipe, tube ends without burrs, smooth. 7.7.2 pipe does not allow bending, bending the bend radius should be ? 4 times times the outer diameter of the tube in. 7.7.3 ellipticity of a bent tube, pipe diameter ? 60mm, not 8%, diameter 760mm, not 6%. 7.7.4 making cables buried piping a
32、pplication root production, growing where interface is required, only straight pipe, only the wire port connections, welded connections are not allowed. 7.7.5 service sleeve should have a good grounding. 7.7.6 cable trays installation, burrs and dirt and corrosion treatment should be carried out, in
33、stall the bridge . 7.8.1.7 piping and piping, equipment and equipment or piping and other equipment shall have sufficient expansion gap in hot situations. 7.8.1.8 metal temperature of the insulating layer (hot) = shell-wall temperature of environment temperature ? 40 ? c. 7.8.2 paint 7.8.2.l paint o
34、f equipment and pipelines should have at least a primer (red paint) and finish. 7.8.2.2 paint appearance color uniform, without paint, rust, flaking, wrinkles, flow marks, scum, paint particles and visible brush marks. 7.8.2.3 interlayer should be tight and without stratification. 7.8.2.4 pipelines
35、asphalt, fiber glass fabric corrosion, external appearance should never show surrounded by glass fiber cloth uniform, dense, painted pitch inspection should be no delamination, cavitation, homogeneity of asphalt coating, brushing each layer thickness in accordance with design requirements. Standard
36、7.9 7.9 structure placement process. 1 fair-faced concrete is a concrete surface without any decoration, structure appearance quality of concrete structure that is able to display strength and aesthetic perception of quality standards. Construction technology requirements are as follows: template te
37、mplate Panel selection and processing require plate high strength, good toughness and DA、2条 B、3条 C、4条 D、5条 (2)三角形的高(中线或角平分线)是( ) A 射线 B 线段 C 直线 D 以上三种均不对 (3)下列各图中，正确画出AC边上的高的是( ) B B B B E C C C C A E E E A A B D C A 分析:三角形的高、中线、角平分线;角度的计算。 8、例题: (1)一辆汽车在笔直的公路上行驶，两次拐弯后，仍在原来的方向上平行前进，那么两次拐弯的角度是( ) A(第
38、一次右拐50?，第二次左拐130? B(第一次左拐50?，第二次右拐50? C(第一次左拐50?，第二次左拐130? D(第一次右拐50?，第二次右拐50? (2)如图，AB?EF?DC，EG?DB，则图 中与?EGA相等的角共有 6个 B、5个 C、4个 D、2个 A、B A DCAEFO E DC D BGA BC (2) (3) (4) (3)如图，已知CD?AB,BE?AC,则?B与?C的大小关系是( ) A、?B,?C B、?B,?C C、?B,?C D、大小关系不能确定 00(4)如图:已知AB?CD，?B=120，?D=150，则?O等于( ). 0000(A)50 (B)60
39、(C)80 (D)90 should be tightened, no loose, Terminal Board wiring should be one on each side, no more than two. J, shielded wire, spare wire binding order, reliable grounding. 7.7 quality standard 7.7.l cables through the cable embedded tube making use of galvanized steel pipe, tube ends without burr
40、s, smooth. 7.7.2 pipe does not allow bending, bending the bend radius should be ? 4 times times the outer diameter of the tube in. 7.7.3 ellipticity of a bent tube, pipe diameter ? 60mm, not 8%, diameter 760mm, not 6%. 7.7.4 making cables buried piping application root production, growing where inte
41、rface is required, only straight pipe, only the wire port connections, welded connections are not allowed. 7.7.5 service sleeve should have a good grounding. 7.7.6 cable trays installation, burrs and dirt and corrosion treatment should be carried out, install the bridge . 7.8.1.7 piping and piping,
42、equipment and equipment or piping and other equipment shall have sufficient expansion gap in hot situations. 7.8.1.8 metal temperature of the insulating layer (hot) = shell-wall temperature of environment temperature ? 40 ? c. 7.8.2 paint 7.8.2.l paint of equipment and pipelines should have at least
43、 a primer (red paint) and finish. 7.8.2.2 paint appearance color uniform, without paint, rust, flaking, wrinkles, flow marks, scum, paint particles and visible brush marks. 7.8.2.3 interlayer should be tight and without stratification. 7.8.2.4 pipelines asphalt, fiber glass fabric corrosion, externa
44、l appearance should never show surrounded by glass fiber cloth uniform, dense, painted pitch inspection should be no delamination, cavitation, homogeneity of asphalt coating, brushing each layer thickness in accordance with design requirements. Standard 7.9 7.9 structure placement process. 1 fair-fa
45、ced concrete is a concrete surface without any decoration, structure appearance quality of concrete structure that is able to display strength and aesthetic perception of quality standards. Construction technology requirements are as follows: template template Panel selection and processing require
46、plate high strength, good toughness and (5)如图(3)，四边形ABCD中,?A=100?，?B=110?，PF?AD，PE?BC，则?EPF等于( ) A、20? B、30? C、40? D、50? BP ACDEF 分析:角度的计算 9、例题: (1)用一批完全相同的多边形地砖铺地面，不能进行镶嵌的是( ) A、正三角形 B、梯形 C、正八边形 D、正六边形 (2)如果一个多边形的边数每增加一条，这个多边形的 ( ) 0 0 A(内角和增加360 B(外角和增加360 0C(对角线增加一条 D(内角和增加180 分析:多边形的内角和 10、例题: (
47、1)一个多边形的内角和等于它的外角和，这个多边形是 ( ) ,、三角形 ,、四边形 ,、五边形 ,、六边形 (2)一个多边形的边数每增加一条，这个多边形的 ( ) 0 0 A(内角和增加360 B(外角和增加360 0C(对角线增加一条 D(内角和增加180 分析:多边形的外角和。 11、例题: 2mx，mx,15,(x，3)(x，n)(1)若，则的值为( ) ,5,2A( B(5 C( D(2 2(2)若(x-4)(x+2)= ,则p、q的值是 ( ) xpxq+A.2，8 B.-2，-8 C.-2，8 D.2，-8 (3)小明在利用完全平方公式计算一个二项整式的平方时，不小心用墨水把241
48、2aab,，最后一项染黑了，得到正确的结果变为( )，你觉得这should be tightened, no loose, Terminal Board wiring should be one on each side, no more than two. J, shielded wire, spare wire binding order, reliable grounding. 7.7 quality standard 7.7.l cables through the cable embedded tube making use of galvanized steel pipe, tube ends without burrs, smooth. 7.7.2 pipe does not allow bending, bending the bend radius should be ? 4 times times the outer diameter of the tube in. 7.7.3 ellipticity of a bent tube, pipe diameter ? 60mm, not 8%, diameter 760mm, not 6%. 7.7.4 making cables buried piping applicat