18.(本小题满分12分)把一枚骰子投掷两次,观察出现的点数,并记第一次出现的点数为m,第二次出现的点数为n. (1)求m与n的和为5的概率;
(2)求两直线mx+ny-1=O与2x+y-2=O相交的概率.
17.(本小题满分12分)已知函数.
(1)求函数的最小正周期; (2)求函数
在
上最大值和最小值.
16.若定义在区间上的函数
对
上的任意
个值
,
,
…,,总满足
≤
,
则称为
上的凸函数.已知函数
在区间
上是“凸函数”,
则在△中,
的最大值是_____________.
15.如图2所示的算法流程图中,输出S的值为 .
14.已知的夹角为
,
.
13.已知满足约束条件
则
的最小值为 .
第二节 书面表达(满分25分)
在生活中有人喜欢运动,也有人不太运动。请你以 “Is sport really good for us?”为题,按照下列要点写一篇英语短文。
正方:运动能强身健体,陶冶情操(如培养合作精神;如何面对胜负等)
反方:运动并非是强身健体的唯一形式(如饮食也很重要);运动容易造成伤害,挫折等我的看法及理由
注意:词数:100-120文章题目和开头已给出(不计入词数)
Is sport really good for us?
Some think sport does us good in many ways.
第一节 短文填词(共10小题,每小题1分,满分10分)
There are a few different r why people use small talk. 76
The first, and most obvious, is to break an uncomfortable s 77
Another reason, however, is simply to kill t . That’s why it is 78
so common to make small talk when you are w for something. 79
Some people make small take in order to be p . You may not 80
feel l chatting with anyone at a party, but it is 81
r to just sit in a corner by yourself. After someone 82
i you to another person ,you do not know anything about then,83
so in order to show a polite i in getting to know them better, 84
you have to start with some small talk. And remember in an English-speaking environment it is
often b to make a few mistakes than to say nothing at all! 85
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