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2026年黑龙江省齐齐哈尔市中考数学试卷

  • 2026-06-28 18:04:22
2026年黑龙江省齐齐哈尔市中考数学试卷

2026年黑龙江省齐齐哈尔市中考数学试卷

一、选择题(每小题只有一个正确答案,每小题3分,满分30分)

1.月球表面昼夜温差非常大,白天平均温度零上126℃,夜间平均温度零下150℃.若将零上126℃记作+126℃,则零下150℃可记作(  )

A.+150℃B.﹣150℃C.+24℃D.﹣24℃

2.运用科学的体育与健康知识指导体育运动和生活实践,才能形成终身保持健康的能力.下列关于体育运动的图标中是轴对称图形的是(  )

3.下列计算正确的是(  )

A.﹣a3+4a3=3a3B.(3a3=9a3

C.a6÷a2a3D.(a33a6

4.如图,一块含30°角的直角三角板的两个顶点分别在直线ab上,若直线ab,∠1=20°,则∠2的度数为(  )

A.30°B.50°C.60°D.70°

5.如图是由7个完全相同的小正方体搭成的立体图形,它的俯视图是(  )

6.如果关于x的分式方程的解为正数,那么实数m的取值范围是(  )

A.m>5且m≠8B.m>1且m≠7C.m>5D.m<5且m≠﹣4

7.将分别标有“热爱”和“奔赴”的两个小球放在一个不透明的口袋中,小球除标记的词语外完全相同.第一次随机摸出一个小球,记录结果后放回口袋,第二次再随机摸出一个小球,两次摸出的小球标记的词语都为“热爱”的概率为(  )

A.B.C.D.

8.5月18日是国际博物馆日.某博物馆推出甲、乙两种文创纪念品,甲种文创纪念品每个3元,乙种文创纪念品每个5元.某游客欲将60元钱全部用于购买甲、乙两种文创纪念品(两种都要买),不同的购买方案有(  )

A.3种B.4种C.5种D.6种

9.如图,在Rt△ABC中,∠C=90°,AC=8,BC=6,动点P从点B出发沿边BA向终点A匀速运动,同时动点Q从点A出发,沿边ACCB向终点B匀速运动,两动点运动到各自终点停止运动.若P,Q两点每秒运动的路程相同,点Q运动的路程为xx>0),△BPQ的面积为y,则下列图象能反映yx之间函数关系的是(  )

10.如图所示的是二次函数yax2+bx+ca,b,c为常数,a≠0)的部分图象,其顶点坐标为(1,n),与y轴交于点A,与x轴正半轴交于点Bm,0)(3<m<4).下列结论:abc>0;3a+c<0;b2=4acn);若点Pt,y1),Q(3﹣t,y2)(t)都在抛物线yax2+bx+c上,则y1y2OAOB,则关于x的方程ax2+(b+1)x=0的两根之和为c.其中正确结论的个数是(  )

A.2个B.3个C.4个D.5个

二、填空题(每小题3分,满分18分)

11.我国人工智能高速发展,实现了综合实力整体性、系统性跃升,智能算力规模已超过159000亿亿次/秒.将159000用科学记数法表示为 .

12.若圆锥的底面半径为4,侧面展开图的圆心角为160°,则其母线长为 .

13.如图,在Rt△ABC中,∠ACB=90°,以点B为圆心,适当长为半径作弧,交AB于点M,交BC于点N,分别以M,N为圆心,大于MN的长为半径作弧,两弧在∠ABC内部交于点P,作射线BPAC于点D.若CD=2,AB=7,则△ABD的面积为  .

14.如图,平面直角坐标系中,矩形ABCD的边CDy轴正半轴上,E是边AD的中点,tan∠BCE,点F在边BC上,BFBC,反比例函数yx<0)的图象经过点E,F.若AD=6,则k的值为 .

15.菱形ABCD中,点E是边AD的中点,EFBC交直线BC于点F.若DE=3CF,EF=4,则菱形ABCD的边长为 .

16.数学活动课上,同学们把底角为30°的等腰三角形称为“友好三角形”,并利用“友好三角形”进行规律探究.如图,在平面直角坐标系中,点A1在经过原点的直线l上,OA1=1,点B1x轴正半轴上,△A1OB1是以OB1为底边的“友好三角形”,以A1B1为底边向右作“友好三角形A1B1C1”;过点C1A1B1的平行线,分别交直线lx轴正半轴于点A2,B2,以A2B2为底边向右作“友好三角形A2B2C2”;过点C2A2B2的平行线,分别交直线lx轴正半轴于点A3,B3,以A3B3为底边向右作“友好三角形A3B3C3”…按此规律,点C2026的纵坐标为 .

三、解答题(本题共8道大题,共72分)

17.(1)计算:|﹣2|+

(2)分解因式:x3yxy

18.求不等式组的所有整数解.

19.解方程:x2﹣6=5x

20.2026年是长征胜利90周年.某校开展了以“赓续血脉,永恒记忆”为主题的长征知识竞赛,满分为100分,学生的成绩均高于60分且为整数.现随机抽取了部分学生的成绩作为样本,将抽取的学生成绩x(分)按A,B,C,D四个等级(A:90≤x≤100,B:80≤x<90,C:70≤x<80,D:60≤x<70)进行了整理,并绘制成如下两幅不完整的统计图.

根据以上信息,解答下列问题:

(1)本次调查抽取了 名学生的成绩;

(2)扇形统计图中,“B等级”对应的扇形圆心角为 度;

(3)请直接补全条形统计图;

(4)若参加本次竞赛的学生有2700人,请估计本次竞赛中获得“A等级”的学生约有多少人.

21.如图,四边形ABCD内接于O,ACO的直径,点EAC的延长线上,且∠CDE+∠ABD=90°.

(1)求证:DEO的切线;

(2)若CE=8,DE=12,sin∠BAC,求阴影部分的面积.

22.2026年中国人形机器人打破了人类半马纪录,实现了从“蹒跚学步”到“风驰电掣”的迭代升级.某公司对人形机器人甲、乙进行奔跑测试,在一条笔直的测试路上有A,B两地,机器人甲、乙分别从A,B两地同时出发,机器人甲以360米/分的速度沿测试路匀速跑向B地,到达B地后,立即以n米/分的速度原路匀速返回;机器人乙以240米/分的速度沿测试路匀速跑向A地,到达A地后停止运动,机器人乙到达A地一段时间后,机器人甲也到达A地并停止运动.机器人甲、乙之间的距离y(米)与机器人甲行进的时间x(分)之间的函数关系如图所示.请结合图象信息解答下列问题:

(1)A,B两地之间的距离为 米,图中m的值为 ;

(2)求线段FG所在直线的函数解析式;

(3)机器人甲行进的时间为多少分时,机器人甲、乙相距600米?(直接写出答案即可)

23.综合与实践

综合实践课上,同学们以矩形的旋转为主题开展探究活动.

已知有公共顶点的矩形ABCD和矩形EBFG,BA=2,BE=1,k.先将矩形EBFG的边BE,BF分别落在矩形ABCD的边BA,BC上,再将矩形EBFG绕点B顺时针旋转,旋转角为α,连接AE,CF

(1)【问题初探】

如图1,当k=1,0°<α<90°时,∠AEB与∠CFB的数量关系是 ,AECF的数量关系是 ;

(2)【类比推理】

如图2,当k,0°<α<90°时,试探究AECF的数量关系,请写出结论,并说明理由;

(3)【深入探究】

如图3,当k,0°<α<360°时,点M为边BC的中点,直线EG交线段BC于点N.若ENMN,则CF的长为 ;

(4)【拓展延伸】

如图4,当k,0°<α<90°时,过点EEQBC,垂足为Q,在线段BE上取点P,使BPEQ,连接AP.若△ABP的面积为S,则S的取值范围是 .

24.综合与探究

如图1,在平面直角坐标系中,抛物线yax2+bx+4(a<0)与x轴交于点A(﹣2,0),B(4,0),与y轴交于点C,作直线AC,BC,点P为第一象限内抛物线上的动点,过点PPDx轴,垂足为D,PD交直线BC于点E

(1)求抛物线的解析式;

(2)求PE的最大值及PE最大时点P的坐标;

(3)如图2,若将抛物线yax2+bx+4沿射线AC方向平移个单位长度,得到新抛物线,点Q为新抛物线上一点,且∠CBQ=∠ACB,则点Q的坐标为 ;

(4)当PE最大时,作直线OE,若点M为直线BC上的一个动点,连接OM,将线段OM绕点O顺时针旋转90°得到OM′,取OM′的中点N,过点NNFOE,垂足为F,连接AN,PF,则AN+PF的最小值为 .

声明:试题解析著作权属菁优网所有,未经书面同意,不得复制发布日期:2026/6/28 16:55:04;用户:mczl58;邮箱:ldwh135@xyh.com;

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  1. CONNECT:[ UseTime:0.000501s ] mysql:host=127.0.0.1;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000788s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000347s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000309s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000574s ]
  6. SELECT * FROM `set` [ RunTime:0.000256s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000566s ]
  8. SELECT * FROM `article` WHERE `id` = 506335 LIMIT 1 [ RunTime:0.000465s ]
  9. UPDATE `article` SET `lasttime` = 1782676171 WHERE `id` = 506335 [ RunTime:0.001082s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000260s ]
  11. SELECT * FROM `article` WHERE `id` < 506335 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000450s ]
  12. SELECT * FROM `article` WHERE `id` > 506335 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000431s ]
  13. SELECT * FROM `article` WHERE `id` < 506335 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000588s ]
  14. SELECT * FROM `article` WHERE `id` < 506335 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000697s ]
  15. SELECT * FROM `article` WHERE `id` < 506335 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001122s ]
0.082436s