2021年初三数学上学期期末考试试卷-人教版.pdf
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1、学习必备欢迎下载初三数学上学期期末考试试卷一、填空题:(每空 3 分,共 42 分)1.抛物线22(1)2yx的对称轴是;顶点的坐标是;2.已知正比例函数ykx 与反比例函数3yx的图象都过A(m,1),则 m,正比例函数的解析式是;3.一个植树小组共有6 名同学,其中有2 人各植树20 棵,有 3 人各植树16 棵,有 1 人植树 14 棵,平均每人植树;4.一条弦把圆分为23 的两部分,那么这条弦所对的圆周角度数为;(第 8 题)(第 9 题)(第 11 题)5.如果两圆的半径分别为1 和 2,圆心距为5,那么一条外公切线的长是;6.若正多边形的一个内角等于140,则它是正边形;7.如果半
2、径为5 的一条弧的长为3,那么这条弧所对的圆心角为;8.如图,三个半径为r的等圆两两外切,且与ABC的三边分别相切,则ABC的边长是;9.某人清晨在公路上跑步,他距某标志牌的距离S(千米)是跑步时间t(小时)的一次函数如图。若该函数的图象是图中的线段BA,该一次函数的解析式是;10.与 半 径 为R的 定 圆O外 切,且 半 径 为r的 圆 的 圆 心 的 轨 迹是;11.如图,有两个同心圆,大圆的弦AB与小圆相切于点P,大圆的弦CD经过点 P,且 CD13,PD 4,两圆组成的圆环的面积是;12.统计某校初三年级期中考试数学成绩的频率分布直方图如图所示,从该图可以看出这CBA.ABCDOA1
3、234O5205st千米小时()()49.5 59.5 69.5 79.5 89.5 99.5 分数频率/相距0.040 0.028 0.020 0.0080.004第 12 题|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 1 页,共 8 页学习必备欢迎下载次考试数学成绩的及格率等于。(学生分数都取整数,60 分以下为不及格)。二、选择题:(每题 2 分,共 22 分)13.若圆锥的母线长为4cm,底面半径为3cm,则圆锥的侧面展开图的面积是()(A)2cm6;(B)2cm12;(C)2cm18;(D)2cm24;14.一个正方形的内切圆半径,
4、外接圆半径与这个正方形边长的比为()(A)122;(B)122;(C)124;(D)224;15.函数 ykx 和kyx的图象是()(A)(B)(C)(D)16.某部队一位新兵进行射击训练,连续射靶5 次,命中的环数分别是0,2,5,2,7。这组数据的中位数与众数分别是()(A)2,2;(B)5,2;(C)5,7;(D)2,7;17.若二次函数2yaxbxc的图象如图所示,则点(ab,ac)在()(A)第一象限;(B)第二象限;(C)第三象限;(D)第四象限;18.一个圆锥的底面半径为10,母线长 30,则它的侧面展开图(扇形)的圆心角是()(A)60;(B)90;(C)120;(D)150;
5、19.如图,O中,弦 AD BC,DADC,AOC 160,则 BCO 等于()(A)20;(B)30;(C)40;(D)50;(第 17 题)(第 19 题)(第 20 题)(第 23 题)20.如图,正比例函数)0(kkxy与反比例函数xy1的图象相交于A、C 两点,过A作x轴的垂线交x轴于 B,连结 BC,若 ABC面积为 S,则()OCBAyxOCBADOxy|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 2 页,共 8 页文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2
6、HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10
7、ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档
8、编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F
9、2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P1
10、0 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3
11、文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X
12、3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3学习必备欢迎下载(A)S1;(B)S2;(C)S3;(D)S21;21.在面积相等的两块田里种植了甲、乙两种水稻,并记录到这两块田在连续10 年中的年产量。现在要比较这两种水稻产量的稳定性,为此应()(A)比较它们的平均产量;(B)比较它们的方差;(C)比较它们的最高产量;(D)比较它们的最低产量;22.同圆的内接正十边形和外切正十边形的周长之比等于()(A)sin18 ;(B
13、)cos18;(C)sin36;(D)cos36;23.设计一个商标图案:先作矩形ABCD,使 AB 2BC,AB 8,再以点A 为圆心、AD的长为半径作半圆,交BA的延长线于F,连 FC。图中阴影部分就是商标图案,该商标图案的面积等于()(A)48;(B)416;(C)38;(D)316;24.如图,正比例函数)0(kkxy与反比例函数xy1的图象相交于A、C 两点,过A作x轴的垂线交x轴于 B,连结 BC,若 ABC面积为 S,则()(A)S1;(B)S2;(C)S3;(D)S21;25.在面积相等的两块田里种植了甲、乙两种水稻,并记录到这两块田在连续10 年中的年产量。现在要比较这两种水
14、稻产量的稳定性,为此应()(A)比较它们的平均产量;(B)比较它们的方差;(C)比较它们的最高产量;(D)比较它们的最低产量;26.同圆的内接正十边形和外切正十边形的周长之比等于()(A)sin18 ;(B)cos18;(C)sin36;(D)cos36;27.设计一个商标图案:先作矩形ABCD,使 AB 2BC,AB 8,再以点A 为圆心、AD的长为半径作半圆,交BA的延长线于F,连 FC。图中阴影部分就是商标图案,该商标图案的面积等于()(A)48;(B)416;(C)38;(D)316;|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 3 页
15、,共 8 页文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG
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17、G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8
18、F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:
19、CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 H
20、A5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 Z
21、D8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3学习必备欢迎下载三、计算题或证明题:28.(本题 9 分)已知:直线1l、2l分别与 x 轴交于点A、C,且都经过y 轴上一点 B,又1l的解析式是y x3,2l与 x 轴正半轴的夹角是60。求:直线2l的函数表达式;ABC的面积;29.(本题 9 分
22、)已知:如图,O和 A 相交于 C、D,圆心A在 O上,过 A 的直线与CD、A、O分别交于F、E、B。求证:AFC ACB;2AEAF AB;四、综合题:30.(本题 9 分)已知:如图,在RtABC中,斜边AB 5 厘米,BC a厘 米,AC b 厘 米,a b,且a、b 是 方 程2(1)40 xmxm的两根,求 a 和 b的值;若 AB C与 ABC开始时完全重合,然后让 ABC固定不动,将A BC以1 厘米/秒的速度沿BC所在的直线向左移动。)设 x 秒后 ABC 与 ABC 的重叠部分的面积为y 平方厘米,求y 与 x 之间的函数关系式,,并写出x 的取值范围;ABCMABC.AB
23、CDEFO|精.|品.|可.|编.|辑.|学.|习.|资.|料.*|*|*|*|欢.|迎.|下.|载.第 4 页,共 8 页文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8
24、F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:
25、CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 HA5G8G3H7P10 ZD8F8H1H3N3文档编码:CG5O8Z3X3F2 H
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