2024年黑龙江省大庆市龙凤区中考二模数学试题
黑龙江
九年级
二模
2024-05-23
142次
整体难度:
容易
考查范围:
数与式、图形的变化、方程与不等式、图形的性质、函数、统计与概率
一、单选题 添加题型下试题
A.![]() | B.![]() | C.![]() | D.![]() |
【知识点】 用科学记数法表示绝对值大于1的数解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a0397c811fe80c80ecd5b871201987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07e37b122a7273e1251ea3860e74c896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d62e8aadaadebf1454fde21a390ebdea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66c036b3829a65c22d8448036116e6ae.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/16/836ffc47-0668-4c52-91dc-3addc0b98056.png?resizew=146)
A.![]() | B.![]() | C.![]() | D.![]() |
【知识点】 求特殊角的三角函数值解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b48e4f734de58a94aa6a6d8d715c149.png)
A.7.5 | B.8 | C.9 | D.8.5 |
【知识点】 用一元一次不等式解决实际问题解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2c8cd193778abc1d9a59200e5de48f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eec9062dc3e73a6498790ba2ae07c25.png)
A.![]() | B.![]() | C.![]() | D.![]() |
【知识点】 两直线平行同旁内角互补解读 折叠问题解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21c12c1005eca985bbbd5cd72b688891.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e071620b401a6b09542c4336671ac6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c34eff4d793873d9e812d75d90fd10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.19 | B.![]() | C.![]() | D.18 |
二、填空题 添加题型下试题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a19d0d77f2dc67f6f60d6e9e2ab4dac.png)
【知识点】 分式有意义的条件解读 二次根式有意义的条件解读
【知识点】 列表法或树状图法求概率解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02caa10a41c2b8e89b7b2c53df1cd51d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/325312d731a10f39528aaeea7952d163.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
【知识点】 求不等式组的解集解读 由不等式组解集的情况求参数解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba4923f19a1d6f7bf16debca5670f628.png)
【知识点】 多边形内角和与外角和综合解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6cdf64c7468afdbc4f44909989d9f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15416b74b2ecbcfa38cf34a9ffff730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbc45da8cafbb059c2db4759638b0e7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995c569ac2b958ec2531e0620084ffec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c650fe55b7603f106c53ca2423451c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e6fdc2a303614fdf8cdc511344b5624.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5feea9e7e583db0356e2728fe9825e09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d8b8edd94bc4d5d517ec77e56800e41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d198bfbd7370d0c4ceb1e6e9750e726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a3e2a901b5a3011dd9161d07db50ae2.png)
三、解答题 添加题型下试题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75139b454c26c878c4fdd1311efd7aa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f544139aa93b5a89f926eda3aa7d27e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6e33e68e182d3fa09c62fff6d804455.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b1065ae0947705c7d16a5a86c78f07e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3896b1f758c7746f885b688069780e66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a62d20003c14d2e0646a38d18e07ecd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a4c9b697e3df2b5469b71d3b5e47a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a4c9b697e3df2b5469b71d3b5e47a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a87796ee30e6c5d5e6b6285b32abe10c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78e1e14b1ff4e4029ec8e52f9e66892.png)
【知识点】 等腰三角形的性质和判定 方位角问题(解直角三角形的应用)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b184c94e38f1e5dbe750b2168c2a37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b72ac611ae66b86761e080761d9aabc.png)
收集数据:甲校成绩在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/273e1ca083d8248e72e9fbd2f8403db6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aa86faa9bfef703aead8c2606684dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aa86faa9bfef703aead8c2606684dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aa86faa9bfef703aead8c2606684dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47e31b3a49e142e4b55e664c29100ff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6620729a37129c16cfd61cd59500bfe1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5f062a2336435511bc5c87adfbe28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5f062a2336435511bc5c87adfbe28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5f062a2336435511bc5c87adfbe28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc06849d2a73578c134e6065ab5a9586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86608326541db75771f5de9db6187e6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4a5350d42c3d9982d27c59d7e9eb673.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4500d4031cbf22a456fa09fa393ba2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/861cfd94db12874ce5764dc3b3199d8c.png)
整理数据:甲、乙两校40名学生成绩的频数分布统计表如下:
组别 | |||||
甲 | |||||
乙 |
统计量 | 平均数 | 众数 | 中位数 | 方差 |
甲 | ||||
乙 |
(1)甲校的样本容量为 ;
(2)m= ;若将乙校成绩按上面的分组绘制扇形统计图,成绩在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/273e1ca083d8248e72e9fbd2f8403db6.png)
(3)在此次测试中,某学生的成绩是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc06849d2a73578c134e6065ab5a9586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7f27ebcef70a3ebbbe8d2e53ea0896.png)
(4)甲校有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98ac61206cb12cf6686bb0facf635010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86608326541db75771f5de9db6187e6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c07fef30fd2c8ae9ffba79fc545b01e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89228eb0607106eca7e6d012c3cee9bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074ee7c2dbb26a45f1672bb88180c744.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e1219157cae0209a3ed30291c03b027.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eee43e0d46a717aef6d45d0214c5d0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e136e7637543c8ae92c8dcd55b31924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80991c1f0c963104740e50cfff6f29a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23d0c8df2ca08feea050892af5337b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e136e7637543c8ae92c8dcd55b31924.png)
(2)结合图象,请直接写出不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/733b34ab8169f59f44d64f780e0cf9af.png)
(3)在y轴上是否存在一点 P,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fbfcae2cecc98e2d6c16dde6d3ec1c1.png)
【知识点】 线段问题(轴对称综合题) 一次函数与反比例函数的交点问题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e17ee14bd91bfff409c06fd434f6745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2586d886c81a00c19bbca6bd21d09e36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeb737739252e26ff063f66d9c32c592.png)
我们如果改变这个窗户的形状,上部改为一个等边三角形(如图2),材料总长度仍为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e17ee14bd91bfff409c06fd434f6745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c01b4e82dc80021c9cfceeda4fd67992.png)
(2)与课本中例1比较,改变窗户形状后,窗户的透光面积的最大值是否变大?通过计算说明.(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8a2e29cebeaca8f07a31ff8ed725880.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/144d88e97bdb4e43d76507c7df491cc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/066cd386723885c535ea720f5817847a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35fe5b93974dd7f6dd5db2038461d733.png)
(3)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc6271bf0e757b2dbf99afbf56679db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33de9fbaa6f67d75fb2d97fa061e96f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9110893482c0dbc069e86e6aed9539b0.png)
x | … | 0 | 1 | 2 | 3 | 4 | … |
y | … | 3 | 6 | 7 | 6 | 3 | … |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f10392437ab60e58109787b9b0952f2d.png)
(2)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f10392437ab60e58109787b9b0952f2d.png)
(3)将抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f10392437ab60e58109787b9b0952f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/547b0bb78501c927a09f0673e784c157.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87490be8d0cdb7bc6c39d1a37f3bc335.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a416a50d339d2b9375f055aba69322f.png)
(4)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39c883d61ef6f0c7642f1fd883ae4674.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c17201d46d3e295641c5a24507dd3c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45038f4eb0af0ec6707a966fc4c0718b.png)
试卷分析
试卷题型(共 28题)
试卷难度
知识点分析
细目表分析 导出
题号 | 难度系数 | 详细知识点 | 备注 |
一、单选题 | |||
1 | 0.94 | 求一个数的绝对值 | |
2 | 0.94 | 轴对称图形的识别 中心对称图形的识别 | |
3 | 0.85 | 用科学记数法表示绝对值大于1的数 | |
4 | 0.94 | 判断简单几何体的三视图 | |
5 | 0.85 | 求特殊角的三角函数值 | |
6 | 0.85 | 用一元一次不等式解决实际问题 | |
7 | 0.65 | 两直线平行同旁内角互补 折叠问题 | |
8 | 0.85 | 有理数大小比较 幂的乘方的逆用 | |
9 | 0.65 | 二元一次方程组的特殊解法 | |
10 | 0.65 | 动点问题的函数图象 根据三角形中线求面积 解直角三角形的相关计算 | |
二、填空题 | |||
11 | 0.85 | 分式有意义的条件 二次根式有意义的条件 | |
12 | 0.85 | 求扇形半径 | |
13 | 0.85 | 列表法或树状图法求概率 | |
14 | 0.65 | 求不等式组的解集 由不等式组解集的情况求参数 | |
15 | 0.65 | 多边形内角和与外角和综合 | |
16 | 0.85 | 根据一次函数增减性求参数 | |
17 | 0.65 | 图形类规律探索 | |
18 | 0.4 | 全等的性质和ASA(AAS)综合(ASA或者AAS) 角平分线的判定定理 等腰三角形的性质和判定 根据正方形的性质与判定求线段长 | |
三、解答题 | |||
19 | 0.94 | 实数的混合运算 特殊角三角函数值的混合运算 | 计算题 |
20 | 0.85 | 运用平方差公式进行运算 运用完全平方公式进行运算 一元二次方程的根与系数的关系 | 计算题 |
21 | 0.65 | 分式方程的实际应用 | 应用题 |
22 | 0.65 | 等腰三角形的性质和判定 方位角问题(解直角三角形的应用) | 应用题 |
23 | 0.65 | 由样本所占百分比估计总体的数量 求扇形统计图的圆心角 运用中位数做决策 根据方差判断稳定性 | 应用题 |
24 | 0.65 | 等边三角形的性质 用勾股定理解三角形 矩形性质理解 证明四边形是菱形 | 问答题 |
25 | 0.65 | 线段问题(轴对称综合题) 一次函数与反比例函数的交点问题 | 问答题 |
26 | 0.65 | 图形问题(实际问题与二次函数) 等边三角形的性质 用勾股定理解三角形 | 问答题 |
27 | 0.65 | 用勾股定理解三角形 证明某直线是圆的切线 相似三角形的判定与性质综合 解直角三角形的相关计算 | 证明题 |
28 | 0.15 | 待定系数法求二次函数解析式 二次函数图象的平移 已知抛物线上对称的两点求对称轴 根据交点确定不等式的解集 | 问答题 |