名校
1 . 如图所示,半圆柱的轴截面为平面
,
是圆柱底面的直径,
为底面圆心,
为一条母线,
为
的中点,且
.
;
(2)求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07956720a50ff238c0766a5d58d00e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e346722774c2a1913719928e352d78ef.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69bcb3226e013650b7d8827c31dd41d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fa768881697b8d4c246b511b63e134c.png)
您最近一年使用:0次
2024-03-19更新
|
1292次组卷
|
2卷引用:河南省信阳市新县高级中学2024届高三考前数学仿真冲刺卷三
名校
解题方法
2 . 如图,四边形
为正方形,
分别为
的中点,以
为折痕把
折起,使点
到达点
的位置,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/4fa355c0-dcd8-4ec2-9da1-41378b334aeb.png?resizew=216)
(1)证明:平面
平面
;
(2)求
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d93949d8a15aca4e79cedb978590571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a37ba261860ddad9d11b2e8348a8f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac536e856feb18e6675a661f8fa44470.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/4fa355c0-dcd8-4ec2-9da1-41378b334aeb.png?resizew=216)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f020ca4ad44801691235958e253907d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85719346f464a101d365d42be27450a3.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/013e58ab92ebfc889e2e0e2be903792e.png)
您最近一年使用:0次
2021-08-17更新
|
804次组卷
|
2卷引用:河南省光山县第二高级中学2023-2024学年高三上学期11月阶段测试数学试题
解题方法
3 . 如图,在三棱锥
,平面
平面
,D为棱AC的中点,M为棱DP的中点,N为棱PC上靠近点C的三等分点,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/a06b6fa0-7a6a-470b-8a93-46360616bcd2.png?resizew=274)
(1)若点H在线段BD的延长线上,且
,问:在棱AP上是否存在点E,使得HE与BN垂直?请说明理由;
(2)求平面
与平面
所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/239b038c44b3d1b3c80084b5a2aa6fb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/a06b6fa0-7a6a-470b-8a93-46360616bcd2.png?resizew=274)
(1)若点H在线段BD的延长线上,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de61d2eef8f9d08e3e99e0182fd6068e.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212a67f115d1cbe69f100b489babe5f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
名校
4 . 如图1,在平行四边形
中,
=60°,
,
,
,
分别为
,
的中点,现把平行四边形
沿
折起如图2所示,连接
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/b8e39710-99eb-4ef5-abe1-9a672673aa4c.png?resizew=396)
(1)求证:
;
(2)若
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/883732ae71bfed76e07732ec709f4653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b5d693c4f0c4d0e6c0c810e7d464b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/883732ae71bfed76e07732ec709f4653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa6cb992b6faad4744f85d73a3b76dd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a56f2e56229a722d1f40d74d3967a3d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/b8e39710-99eb-4ef5-abe1-9a672673aa4c.png?resizew=396)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82c2b3adb41e8965f553da2e5086a751.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a677b42f8b427b21924a559b90141d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c44507c93f6180afd1697d2fa5a5c741.png)
您最近一年使用:0次
2021-06-15更新
|
1645次组卷
|
12卷引用:2017届河南南阳一中高三理上学期月考四数学试卷
2017届河南南阳一中高三理上学期月考四数学试卷河南省南阳市2018届高三期终质量评估数学(理)试题2016届福建福州市高三上学期期末数学(理)试卷宁夏石嘴山市第三中学2017届高三下学期第三次模拟考试数学(理)试题广西南宁二中2020届高三4月开学考试理数试题四川省成都市实验外国语学校2020届高三(高2017级)数学模拟(三)理试题(已下线)专题19 立体几何综合-2020年高考数学(理)母题题源解密(全国Ⅲ专版)湖北省武汉一中2021届高三下学期二模数学试题广东省广州市广州大学附属中学2021-2022学年高二上学期第一次月考数学试题广东省真光中学2021-2022学年高二上学期10月月考数学试题(已下线)2022年高考考前20天终极冲刺攻略(三)【理科数学】 (5月27日)2023版 北师大版(2019) 选修第一册 突围者 第三章 专项拓展训练3 用空间向量解决折叠问题
名校
5 . 如图,
,
是两条互相垂直的异面直线,点
、
在直线
上,点
、
在直线
上,
、
分别是线段
、
的中点,且
,
.
![](https://img.xkw.com/dksih/QBM/2021/6/2/2734521055207424/2736339753345024/STEM/f9696d244bb64f5f944dd5ab54a528e0.png?resizew=174)
(1)证明:
平面
;
(2)设平面
与平面
所成的角为
.现给出下列四个条件:
①
;②
;③
;④
.
请你从中再选择两个条件以确定
的值,并求之.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e5525e0a6ba3d15ecfe230ee80d092c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3643fbbf4e0775dea240dff8fd6dad.png)
![](https://img.xkw.com/dksih/QBM/2021/6/2/2734521055207424/2736339753345024/STEM/f9696d244bb64f5f944dd5ab54a528e0.png?resizew=174)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)设平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588690c4a218025937357ffab8d63c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab72c2fb8817dc52c9c8a798d9bbb483.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de71e0754890ef6b886514e0c6ddde97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2082fe5770b07e6283a2e2b52b6c3779.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b47a08a25693bbfa01026573625ad15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d900531973c546625694146fa1509ab9.png)
请你从中再选择两个条件以确定
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefd06c239145a2b6ae87a955aa51414.png)
您最近一年使用:0次
2021-06-05更新
|
1971次组卷
|
5卷引用:河南省2022届普通高中毕业班高考适应性测试理科数学试题
河南省2022届普通高中毕业班高考适应性测试理科数学试题福建省福建师范大学附属中学2021届高三启明级校模拟考试数学试题(已下线)二轮拔高卷06-【赢在高考·黄金20卷】备战2022年高考数学(理)模拟卷(全国卷专用)沪教版(2020) 选修第一册 新课改一课一练 第3章 单元复习(已下线)专题6 第3讲 立体几何中的向量方法
名校
6 . 如图,四棱锥
中侧面PAB为等边三角形且垂直于底面ABCD,
,
,E是PD的中点.
(1)证明:直线
平面PAB;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78aafccd397e9c88a567abf4993d40f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7af36689a2d2a5f999b3b5859a3c9faf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/5/12ac3803-672c-4ea1-9060-6e7203aed88a.jpg?resizew=206)
(1)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/932a04304f2d4975955d4baabb2deeea.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bfb067a6b5e6278f089bdc29282a473.png)
您最近一年使用:0次
2020-10-12更新
|
281次组卷
|
3卷引用:河南省驻马店市新蔡县四校2020-2021学年高二上学期理数联考试题
解题方法
7 . 在正方体ABCD—A1B1C1D1中,异面直线
和
分别在上底面A1B1C1D1和下底面ABCD上运动,且
,若
与
所成角为60°时,则
与侧面ADD1A1所成角的大小为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/057cdb4057bca398a838e868efd360f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.30° | B.45° | C.60° | D.90° |
您最近一年使用:0次
2020-10-03更新
|
1524次组卷
|
6卷引用:河南省名校联盟2020-2021学年高三9月质量检测数学文科试题
河南省名校联盟2020-2021学年高三9月质量检测数学文科试题贵州省贵阳为明教育集团2021届高三第一次调研理科数学试题(已下线)专题8.7 立体几何中的向量方法(精练)-2021年新高考数学一轮复习学与练吉林省通榆县第一中学2020-2021学年高三上学期第四次质量检测数学(文)试题人教A版(2019) 选修第一册 实战演练 第一章 验收检测(已下线)专题 1.2空间向量:求距离与角度13种题型归类(2)
名校
8 . 如图,
为圆锥的顶点,
为底面圆心,点
,
在底面圆周上,且
,点
,
分别为
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/6eac220e-36d5-4924-8579-2cb8998cc878.png?resizew=141)
求证:
;
若圆锥的底面半径为
,高为
,求直线
与平面
所成的角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc1eb76fe74cba30f7cbcde349ba80da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4db9b82b67efe45a02fca32bfcf5dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/6eac220e-36d5-4924-8579-2cb8998cc878.png?resizew=141)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/464e16e3387532eb66521b4e97791cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97fa483ce5e3575ff399722caba7b943.png)
您最近一年使用:0次
2020-09-22更新
|
1467次组卷
|
7卷引用:河南省中原名校联盟2020-2021学年高三上学期第一次质量考评数学(理科)试题
名校
解题方法
9 . 如图,三棱柱
中,D是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/03656881-a632-4480-aef3-10b67aaffd28.png?resizew=193)
(1)证明:
面
;
(2)若△
是边长为2的正三角形,且
,
,平面
平面
.求平面
与侧面
所成二面角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/03656881-a632-4480-aef3-10b67aaffd28.png?resizew=193)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f5830646a912c3a916beac4f88c116b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bca84ad86c648d3bb20c8909c8da3f.png)
(2)若△
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aad91719bd5fdc1b2d3d5298f2f44cc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd426c9273efec5173db056d1d099f9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bca84ad86c648d3bb20c8909c8da3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
您最近一年使用:0次
2020-08-17更新
|
1717次组卷
|
7卷引用:河南省洛阳市新安县第一高级中学2022届高三高考考前模拟数学理科试题
名校
解题方法
10 . 如图,已知三棱柱
中,侧棱与底面垂直,且
,
,
、
分别是
、
的中点,点
在线段
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/1aec0e7a-1bdf-4ff6-915c-6ba733ac01a9.png?resizew=170)
(1)求证:不论
取何值,总有
;
(2)当
时,求平面
与平面
所成二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002c709e9fee8d477bddfe595cc760f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/666b6c488afe7142df3da04d0ef573cb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/1aec0e7a-1bdf-4ff6-915c-6ba733ac01a9.png?resizew=170)
(1)求证:不论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e4ece75fe9b8555909be5a00d2b7af0.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500d68f2678989a5ce7431cfd51b019d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ce50ba5e349425274f05d46d120a74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
2020-08-05更新
|
923次组卷
|
11卷引用:河南省郑州市第一中学2020-2021学年高三上学期开学测试数学(理)
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