名校
1 . 以下四个关于圆锥曲线的命题中:
①设
、
为两个定点,
为非零常数,若
,则动点
的轨迹为双曲线;
②过定圆
上一定点
作圆的动弦
,
为坐标原点,若
,则动点
的轨迹为椭圆;
③抛物线
的焦点坐标是
;
④曲线
与曲线
(
且
)有相同的焦点.
其中真命题的序号为______ 写出所有真命题的序号.
①设
![](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/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f4562ddd51f544eaff300c9b4638646.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
②过定圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10a6bb839093992d42c6c813c73ccad2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
③抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/315513892f06ef3ce82021d5e0566606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2762dfc22fc40385f211f1a23875424b.png)
④曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9a0bd4bd9985f1e367c100b453ed03f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4e82ca0fbf98b8903c97467acd1d6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c69c2e4498e7916dbc05a71fc0c316ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe5c9d9221866bca2fd57b9b31100c62.png)
其中真命题的序号为
您最近一年使用:0次
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1191次组卷
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5卷引用:江西省景德镇一中2020-2021学年高一(1班)下学期期中考试数学试题
江西省景德镇一中2020-2021学年高一(1班)下学期期中考试数学试题(已下线)考点39 曲线与方程-备战2022年高考数学一轮复习考点帮(浙江专用)(已下线)专题6.2 期中押题检测卷(考试范围:第1-3章)2(中)-【满分计划】2021-2022学年高二数学阶段性复习测试卷(苏教版2019选择性必修第一册) 河北省保定市唐县第一中学2021-2022学年高二上学期12月月考数学试题(已下线)解密15 双曲线方程(分层训练)-【高频考点解密】2022年高考数学二轮复习讲义+分层训练(新高考专用)
21-22高三上·北京·期中
名校
解题方法
2 . 已知函数
,任取
,定义集合
点
满足
.设
分别表示集合
中元素的最大值和最小值,记
,给出以下四个结论:①若函数
,则
;②若函数
,则
的最大值为
;③若函数
,则
在
上单调递增;④若函数
,则
的最小正周期为2,其中所有正确结论的序号为__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995ec593baa4ef50b6d87c78380953d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef57fffaa2a73fae4cb219c6ccbf2929.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f71f4ac48908498a5a9eb4d62f5cf27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/676ada988580ff4365da61820eddcef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3215494dccf60336e9f7740d19fcbc57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f26d721b107f8b2bc88f3eb0f42c70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77d2bbe03029a32873463dd93998605d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/318a16f1950d06e5500c76d8f81a507f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed05ed8d7e1011a7df20e484ea87325c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/318a16f1950d06e5500c76d8f81a507f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fecc65b2bfb207896ef00c42334caaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfb7201e3e41346c74f49e0687430b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fecc65b2bfb207896ef00c42334caaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/972cfd3677c0f6342a57d3ab58cf0356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfb7201e3e41346c74f49e0687430b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fecc65b2bfb207896ef00c42334caaf.png)
您最近一年使用:0次
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|
562次组卷
|
4卷引用:江西省永新中学2021-2022学年高二上学期第一次段考数学(理)试题
江西省永新中学2021-2022学年高二上学期第一次段考数学(理)试题(已下线)北京市第四中学2022届高三上学期期中考试数学试题(已下线)专题2.2 模拟卷(2)-2022年高考数学大数据精选模拟卷(新高考地区专用)北京市第十一中学2023届高三上学期11月月考数学试题
3 . 给出下列命题:
①已知向量
与
的夹角是钝角,则实数
的取值范围是
;
②函数
与
的图像关于
对称;
③函数
的最小正周期为
;
④函数
为周期函数;
⑤函数
的图像关于点
对称的函数图像的解析式为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0d35097c14fd98b2a53fad4d498926e.png)
其中正确命题的序号为__________ .
①已知向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3efb71322516a9dce8a71cbbef2a4fa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f49f461d57d35cebe267f62f2c5ec1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce93d027b2ec2bb64b74152299bc8851.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26efb9f32f6cb608753f9189c6b48644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50dcf7e21fe83faed21209091b28590d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ebd910dc72c0c8c85af72f2d1b1da50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a520fdd9881447c4a70a26f98ca11841.png)
⑤函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5265d99095b635f62c7915298ec0e963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0d35097c14fd98b2a53fad4d498926e.png)
其中正确命题的序号为
您最近一年使用:0次
名校
4 . 已知
,
表示两条不同的直线,
,
,
表示三个不同的平面,给出下列四个命题:
①
,
,
,则
;
②
,
,
,则
;
③
,
,
,则
;
④
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb083c827a7fffbff90916dea20570f.png)
其中正确命题的序号为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168f2201ca24a6b8502aa5bd1763a127.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f27b488575615d9aa6e8b0ccaf9b11b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b599a30881f97baafcc29ecae081691.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb083c827a7fffbff90916dea20570f.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb083c827a7fffbff90916dea20570f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b659403b11522c876cd7803f3dd63572.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f6c9612cc103bcc6cca5a97b917e302.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b19876be5911d16eb1d9cd8f9699460b.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb083c827a7fffbff90916dea20570f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28cee4d8d2c3ef579fe3aa2f579ad269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/026830b37d89ab160108a449aa20740f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc457ba23645bb1fbaa297c5e565f978.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc457ba23645bb1fbaa297c5e565f978.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45c124ab4f79a863f6a15cfd1365101f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b19876be5911d16eb1d9cd8f9699460b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb083c827a7fffbff90916dea20570f.png)
其中正确命题的序号为
A.①② | B.②③ | C.③④ | D.②④ |
您最近一年使用:0次
2017-11-26更新
|
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|
5卷引用:江西省九江市柴桑区一中2020-2021学年高二上学期数学(理)期中试题
5 . 下列命题:
①在一个2×2列联表中,由计算得k2=6.679,则有99%的把握确认这两个变量间有关系.
②随机变量X服从正态分布N(1,2),则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d28a058be536f2b0c476730f21b775.png)
③ 若二项式
的展开式中所有项的系数之和为
,则展开式中
的系数是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b72ac611ae66b86761e080761d9aabc.png)
④连掷两次骰子得到的点数分别为m,n,记向量a=(m,n)与向量b=(1,-1)的夹角为θ,则θ∈(0,
]的概率是
.
⑤.若
,则
31;其中正确命题的序号为___________ .
①在一个2×2列联表中,由计算得k2=6.679,则有99%的把握确认这两个变量间有关系.
②随机变量X服从正态分布N(1,2),则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d28a058be536f2b0c476730f21b775.png)
③ 若二项式
![](https://img.xkw.com/dksih/QBM/2016/5/4/1572615769989120/1572615776256000/STEM/30df335821c84ce498b1d9c9bb2e60a4.png?resizew=67)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc2cd4f61aa4295cfac20c9abbfb573a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba0c0b00e5193d7b3b55af9c6023f19b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b72ac611ae66b86761e080761d9aabc.png)
④连掷两次骰子得到的点数分别为m,n,记向量a=(m,n)与向量b=(1,-1)的夹角为θ,则θ∈(0,
![](https://img.xkw.com/dksih/QBM/2016/5/4/1572615769989120/1572615776256000/STEM/b0de9aef12df491bb50f16caae3c780b.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2016/5/4/1572615769989120/1572615776256000/STEM/cc58a1cf11d1404f9a8620ef855fe44f.png?resizew=21)
⑤.若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edd5ed5e8611d83b1f68812d844a903c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6352928c4a258265b912eef8a04569b4.png)
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名校
6 . 已知
为
上的偶函数,对任意
都有
且当
,
时,有
成立,给出四个命题:①
;②直线
是函数
的图像的一条对称轴;③函数
在
上为增函数;④函数
在
上有四个零点,其中所有正确命题的序号为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed586e332a074da6f8aa7789ff097c62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f823dee1706b2dc44ecf54112d294028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a57d6d7b74ae630e6ce3b43afe6060.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee64d91962737f227ea7526db98bcf61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fb489e91a4b601413959b0954531df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f77200105efc579da887be0dd06ee6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1431d051801f96ec5135b57da7e996.png)
您最近一年使用:0次
2016-12-03更新
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5卷引用:江西省赣州市会昌中学2020-2021学年高一上学期第二次月考数学试题
江西省赣州市会昌中学2020-2021学年高一上学期第二次月考数学试题2014-2015学年湖南省浏阳、攸县、醴陵一中高一12月联考数学试卷2015-2016学年陕西西藏民族学院附中高一上期末数学试卷四川省树德中学2020-2021学年高一上学期12月阶段性测试数学试题(已下线)类型四 函数间的互相联系-【题型突破】备战2022年高考数学二轮基础题型+重难题型突破(新高考专用)
名校
解题方法
7 . 关于函数
,下列说法正确 的是___________ (将正确的序号写在横线上)
(1)
是以
为周期的函数;
(2)当且仅当
时,函数取得最小值
;
(3)
图像的对称轴为直线
;
(4)当且仅当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d6147f7415778069741eccb806d7c06.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e9fdc1f8ed0ae44b54a9a2a3aca2db4.png)
(2)当且仅当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb91817c6cdf6fe093685db136b9d1b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9db9373e74ecf5d63ad98afe66aa4ba.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d3307ab09aef2ccf4021576335f8aef.png)
(4)当且仅当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbacbe2d8fe3d71e3be53d8bfc34a97a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4a9bd95ea122a401c88fce15f8bf1d3.png)
您最近一年使用:0次
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4卷引用:江西省宜春市万载中学2021-2022学年高一(普通班)下学期期中考数学试题
江西省宜春市万载中学2021-2022学年高一(普通班)下学期期中考数学试题黑龙江省双鸭山市第一中学2020-2021学年高一上学期第二次月考数学试题(已下线)专题02 三角函数 三角恒等变换(难点)-2020-2021学年高一数学下学期期末专项复习(北师大版2019必修第二册)(已下线)第7章《三角函数》 培优测试卷(二)-2021-2022学年高一数学上册同步培优训练系列(苏教版2019)
名校
解题方法
8 . 已知函数
的导函数为
,
,且
在R上为严格增函数,关于下列两个命题的判断,说法正确的是( )
①“
”是“
”的充要条件;
②“对任意
都有
”是“
在R上为严格增函数”的充要条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d0c99ddd028f0bc3b1d64924ff0f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d0c99ddd028f0bc3b1d64924ff0f61.png)
①“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2210f152080d9a68a97c805f5c1cde96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc1a317e2e6f1caf1e67bf4073cf789.png)
②“对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e541ea2f855f981c96207070683d388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e702d87b7d70bf870bc04ef6df889d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
A.①真命题;②假命题 | B.①假命题;②真命题 |
C.①真命题;②真命题 | D.①假命题;②假命题 |
您最近一年使用:0次
2023-12-12更新
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760次组卷
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7卷引用:江西省上饶市广丰一中2024届高三上学期12月月考数学试题
江西省上饶市广丰一中2024届高三上学期12月月考数学试题上海市闵行区2024届高三上学期学业质量调研(一模)数学试卷湖南省衡阳市第八中学2024届高三上学期第五次月考数学试题(已下线)专题09 导数(三大类型题)15区新题速递(已下线)专题01 集合(15区真题速递)广东省广州市第二中学2023-2024学年高二下学期期中考试数学试题(已下线)上海市高二下学期期末真题必刷03(常考题)--高二期末考点大串讲(沪教版2020选修)
名校
9 . 如图放置的边长为2的正三角形ABC沿x轴滚动,记滚动过程中顶点A的横、纵坐标分别为
和
,且
是
在映射
作用下的象,则下列说法中:
![](https://img.xkw.com/dksih/QBM/2018/11/12/2073992958287872/2075531584708608/STEM/84ab56c9e3a74a659c37cd6988dfdd18.png?resizew=195)
① 映射
的值域是
;
② 映射
不是一个函数;
③ 映射
是函数,且是偶函数;
④ 映射
是函数,且单增区间为
,
其中正确说法的序号是___________ .
说明:“正三角形ABC沿x轴滚动”包括沿x轴正方向和沿x轴负方向滚动.沿x轴正方向滚动指的是先以顶点B为中心顺时针旋转,当顶点C落在x轴上时,再以顶点C为中心顺时针旋转,如此继续.类似地,正三角形ABC可以沿x轴负方向滚动.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://img.xkw.com/dksih/QBM/2018/11/12/2073992958287872/2075531584708608/STEM/84ab56c9e3a74a659c37cd6988dfdd18.png?resizew=195)
① 映射
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd81c4371f672e636e0b0c771f88078f.png)
② 映射
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
③ 映射
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
④ 映射
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da5d683c6b0f3ef3dec2382d337259d.png)
其中正确说法的序号是
说明:“正三角形ABC沿x轴滚动”包括沿x轴正方向和沿x轴负方向滚动.沿x轴正方向滚动指的是先以顶点B为中心顺时针旋转,当顶点C落在x轴上时,再以顶点C为中心顺时针旋转,如此继续.类似地,正三角形ABC可以沿x轴负方向滚动.
您最近一年使用:0次
2018-11-14更新
|
513次组卷
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3卷引用:江西省赣州市宁都县宁师中学2019-2020学年高一上学期12月月考数学试题