适用年级:{{getGradeNameByProperty('高三|高考模拟|广东|2014年')}} 试卷类型:{{getTestPaperTypeName('高三|高考模拟|广东|2014年')}} 使用省份:{{getAreaName('高三|高考模拟|广东|2014年')}}
试卷年份:{{getYear('高三|高考模拟|广东|2014年')}}上传日期:2014-03-27题数:21
提示:单击题文可显示答案与解析。
题号:945484
题型:选择题
难易度:较难
日期:2014-03-27
来源:2014届广东茂名市高三第一次高考模拟文科数学试卷(带解析)
【题文】若圆
![](http://static.zujuan.xkw.com/Upload/2014-03/28/dab476ce-e791-450c-a48c-67b54f49e254/paper.files/image001.png)
上的任意一点关于直线
![](http://static.zujuan.xkw.com/Upload/2014-03/28/dab476ce-e791-450c-a48c-67b54f49e254/paper.files/image002.png)
的对称点仍在圆上,则
![](http://static.zujuan.xkw.com/Upload/2014-03/28/dab476ce-e791-450c-a48c-67b54f49e254/paper.files/image003.png)
最小值为( )
题号:945485
题型:选择题
难易度:较难
日期:2014-03-27
来源:2014届广东茂名市高三第一次高考模拟文科数学试卷(带解析)
题号:945486
题型:选择题
难易度:一般
日期:2014-03-27
来源:2014届广东茂名市高三第一次高考模拟文科数学试卷(带解析)
【题文】如图所示的流程图中,输出的结果是( )
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image048.png)
题号:945487
题型:选择题
难易度:较易
日期:2014-03-27
来源:2014届广东茂名市高三第一次高考模拟文科数学试卷(带解析)
题号:945488
题型:选择题
难易度:较易
日期:2014-03-27
来源:2014届广东茂名市高三第一次高考模拟文科数学试卷(带解析)
题号:945489
题型:选择题
难易度:较易
日期:2014-03-27
来源:2014届广东茂名市高三第一次高考模拟文科数学试卷(带解析)
【题文】设条件
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image022.png)
;条件
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image023.png)
,那么
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image024.png)
是
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image025.png)
的( )条件 .
A.充分不必要 | B.必要不充分 | C.充要 | D.既不充分也不必要 |
题号:945490
题型:选择题
难易度:较易
日期:2014-03-27
来源:2014届广东茂名市高三第一次高考模拟文科数学试卷(带解析)
题号:945491
题型:选择题
难易度:较易
日期:2014-03-27
来源:2014届广东茂名市高三第一次高考模拟文科数学试卷(带解析)
【题文】在复平面内,复数
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image009.png)
对应的点位于( )
A.第一象限 | B.第二象限 | C.第三象限 | D.第四象限 |
题号:945512
题型:选择题
难易度:较易
日期:2014-03-27
来源:2014届广东茂名市高三第一次高考模拟文科数学试卷(带解析)
题号:4187407
题型:选择题
难易度:较易
日期:2014-03-27
来源:2014届广东茂名市高三第一次高考模拟文科数学试卷(带解析)
【题文】定义:
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image056.png)
,其中
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image057.png)
为向量
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image058.png)
与
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image059.png)
的夹角,若
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image060.png)
,
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image061.png)
,
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image062.png)
,则
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image063.png)
等于( )
题号:945482
题型:填空题
难易度:较易
日期:2014-03-27
来源:2014届广东茂名市高三第一次高考模拟文科数学试卷(带解析)
【题文】已知直线
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image106.png)
的参数方程为:
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image110.png)
(
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image111.png)
为参数),圆
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image112.png)
的极坐标方程为
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image113.png)
,则圆
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image112.png)
的圆心到直线
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image106.png)
的距离为
.
题号:945483
题型:填空题
难易度:较易
日期:2014-03-27
来源:2014届广东茂名市高三第一次高考模拟文科数学试卷(带解析)
【题文】函数
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image084.png)
的定义域为
.
题号:4187408
题型:填空题
难易度:一般
日期:2014-03-27
来源:2014届广东茂名市高三第一次高考模拟文科数学试卷(带解析)
【题文】下图是一个几何体的三视图,根据图中数据,可得该几何体的表面积是___________.
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image088.png)
题号:4187409
题型:填空题
难易度:较易
日期:2014-03-27
来源:2014届广东茂名市高三第一次高考模拟文科数学试卷(带解析)
【题文】在平面直角坐标系上,设不等式组
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image092.png)
所表示的平面区域为
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image093.png)
,记
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image093.png)
内的整点(即横坐标和纵坐标均为整数的点)的个数为
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image094.png)
. 则
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image095.png)
=
,经推理可得到
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image096.png)
=
.
题号:4187410
题型:填空题
难易度:较易
日期:2014-03-27
来源:2014届广东茂名市高三第一次高考模拟文科数学试卷(带解析)
【题文】已知圆
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image118.png)
的半径为
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image119.png)
,从圆
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image118.png)
外一点
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image120.png)
引切线
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image121.png)
和割线
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image122.png)
,圆心
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image118.png)
到
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image123.png)
的距离为
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image124.png)
,
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image125.png)
,则切线
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image121.png)
的长为____________.
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image126.png)
题号:945478
题型:解答题
难易度:较难
日期:2014-03-27
来源:2014届广东茂名市高三第一次高考模拟文科数学试卷(带解析)
【题文】已知函数
![](http://static.zujuan.xkw.com/Upload/2014-03/28/fc170d8b-efbd-4894-b9c5-3a2580601257/paper.files/image001.png)
,其中
![](http://static.zujuan.xkw.com/Upload/2014-03/28/fc170d8b-efbd-4894-b9c5-3a2580601257/paper.files/image002.png)
,
(1)当
![](http://static.zujuan.xkw.com/Upload/2014-03/28/fc170d8b-efbd-4894-b9c5-3a2580601257/paper.files/image003.png)
时,求曲线
![](http://static.zujuan.xkw.com/Upload/2014-03/28/fc170d8b-efbd-4894-b9c5-3a2580601257/paper.files/image004.png)
在点
![](http://static.zujuan.xkw.com/Upload/2014-03/28/fc170d8b-efbd-4894-b9c5-3a2580601257/paper.files/image005.png)
处的切线方程;
(2)讨论
![](http://static.zujuan.xkw.com/Upload/2014-03/28/fc170d8b-efbd-4894-b9c5-3a2580601257/paper.files/image006.png)
的单调性;
(3)若
![](http://static.zujuan.xkw.com/Upload/2014-03/28/fc170d8b-efbd-4894-b9c5-3a2580601257/paper.files/image006.png)
有两个极值点
![](http://static.zujuan.xkw.com/Upload/2014-03/28/fc170d8b-efbd-4894-b9c5-3a2580601257/paper.files/image007.png)
和
![](http://static.zujuan.xkw.com/Upload/2014-03/28/fc170d8b-efbd-4894-b9c5-3a2580601257/paper.files/image008.png)
,记过点
![](http://static.zujuan.xkw.com/Upload/2014-03/28/fc170d8b-efbd-4894-b9c5-3a2580601257/paper.files/image009.png)
的直线的斜率为
![](http://static.zujuan.xkw.com/Upload/2014-03/28/fc170d8b-efbd-4894-b9c5-3a2580601257/paper.files/image010.png)
,问是否存在
![](http://static.zujuan.xkw.com/Upload/2014-03/28/fc170d8b-efbd-4894-b9c5-3a2580601257/paper.files/image011.png)
,使得
![](http://static.zujuan.xkw.com/Upload/2014-03/28/fc170d8b-efbd-4894-b9c5-3a2580601257/paper.files/image012.png)
?若存在,求出
![](http://static.zujuan.xkw.com/Upload/2014-03/28/fc170d8b-efbd-4894-b9c5-3a2580601257/paper.files/image011.png)
的值,若不存在,请说明理由.
题号:945479
题型:解答题
难易度:较难
日期:2014-03-27
来源:2014届广东茂名市高三第一次高考模拟文科数学试卷(带解析)
【题文】已知抛物线
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image284.png)
的焦点为椭圆
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image285.png)
的右焦点,且椭圆的长轴长为4,M、N是椭圆上的的动点.
(1)求椭圆标准方程;
(2)设动点
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image286.png)
满足:
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image287.png)
,直线
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image288.png)
与
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image289.png)
的斜率之积为
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image290.png)
,证明:存在定点
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image291.png)
使
得
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image292.png)
为定值,并求出
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image291.png)
的坐标;
(3)若
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image220.png)
在第一象限,且点
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image293.png)
关于原点对称,
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image294.png)
垂直于
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image295.png)
轴于点
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image120.png)
,连接
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image296.png)
并延长交椭圆于点
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image133.png)
,记直线
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image297.png)
的斜率分别为
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image298.png)
,证明:
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image299.png)
.
题号:945480
题型:解答题
难易度:一般
日期:2014-03-27
来源:2014届广东茂名市高三第一次高考模拟文科数学试卷(带解析)
【题文】在四棱锥
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image214.png)
中,
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image215.png)
,
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image216.png)
,
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image217.png)
,
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image218.png)
为
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image219.png)
的中点,
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image220.png)
为
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image121.png)
的中点,
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image221.png)
.
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image222.png)
(1)求证:
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image223.png)
;
(2)求证:
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image224.png)
;
(3)求三棱锥
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image225.png)
的体积
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image226.png)
.
题号:945481
题型:解答题
难易度:较难
日期:2014-03-27
来源:2014届广东茂名市高三第一次高考模拟文科数学试卷(带解析)
【题文】已知等差数列
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image186.png)
的前
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image187.png)
项和为
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image188.png)
.
(1)请写出数列
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image186.png)
的前
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image187.png)
项和
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image188.png)
公式,并推导其公式;
(2)若
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image189.png)
,数列
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image186.png)
的前
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image187.png)
项和为
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image188.png)
,求
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image190.png)
的和.
题号:4187411
题型:解答题
难易度:较难
日期:2014-03-28
来源:2014届广东茂名市高三第一次高考模拟文科数学试卷(带解析)
【题文】设锐角三角形ABC的内角A,B,C的对边分别为
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image131.png)
,且
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image132.png)
.
(1)求角
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image133.png)
的大小;
(2)若
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image134.png)
,求
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image135.png)
的面积及
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image136.png)
.
题号:4187412
题型:解答题
难易度:一般
日期:2014-03-28
来源:2014届广东茂名市高三第一次高考模拟文科数学试卷(带解析)
【题文】空气质量指数
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image157.png)
(单位:
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image158.png)
)表示每立方米空气中可入肺颗粒物的含量,这个值越高,就代表空气污染越严重:
日均浓度
| ![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image159.png)
| ![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image160.png)
| ![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image161.png)
| ![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image162.png)
| ![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image163.png)
| ![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image164.png)
|
空气质量级别
| 一级
| 二级
| 三级
| 四级
| 五级
| 六级
|
空气质量类别
| 优
| 良
| 轻度污染
| 中度污染
| 重度污染
| 严重污染
|
某市
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image165.png)
年
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image166.png)
月
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image167.png)
日—
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image166.png)
月
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image168.png)
日(
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image168.png)
天)对空气质量指数
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image157.png)
进行监测,获得数据后得到如下条形图.
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image169.png)
(1)估计该城市一个月内空气质量类别为优的概率;
(2)从空气质量级别为三级和四级的数据中任取
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image055.png)
个,求恰好有一天空气质量类别为中度污染的概率.
![](http://static.zujuan.xkw.com/Upload/2014-03/27/18889700-8dff-4d4b-b75a-e9050b66ceba/paper.files/image012.png)