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【简答题】
一次考试中，五名学生的数学、物理成绩如下表所示： 学生 A 1 A 2 A 3 A 4 A 5 数学（x分 89 91 93 95 97 物理（y分） 87 89 89 92 93 （1）请在图的直角坐标系中作出这些数据的散点图，并求出这些数据的同归方程； （2）要从4名数学成绩在90分以上的同学中选2人参加一项活动，以X表示选中的同学的物理成绩高于90分的人数，求随机变量X的分布列及数学期望E（X）的值．
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举一反三
【单选题】Why does Olga need a library directory?
A.
She hasn't been working at the library for long.
B.
Several locations have changed recently.
C.
She has never been in the library before.
D.
People often get lost in the library.
【单选题】Bending down, he the footprints that hadn’t been blown away in the wind, concluding that they belonged to a wolf.
A.
ignored
B.
inspected
C.
expanded
D.
defended
【单选题】听力原文：M: Thanks a lot for offering to return these books to the library for me. W: Four books! But I have four of my own to take back too! Q: What does the woman mean? (17)
A.
Shy: didn't expect there would be so many books.
B.
Four books are a lot to borrow from the library.
C.
She isn't sure he counted all his books.
D.
He has reminded her that she also has some books to return.
【单选题】某奶牛场有几头奶牛尿液短赤并且黄而浑浊,外阴瘙痒,舌苔黄腻,脉弦数 。 最宜的治疗原则是
A.
清心泻火
B.
养心益气，安神定悸
C.
温阳散寒，行气止痛
D.
清利肝胆湿热
E.
清利小肠
【简答题】某奶牛场有几头奶牛尿液短赤并且黄而浑浊,外阴瘙痒,舌苔黄腻,脉弦数。请根据上述症状进行辨证分析,并确定治疗原则和所用方药。
【单选题】全国人大常委会决定免去周永康兼任的公安部长职务,任命孟建柱为公安部长。这体现了全国人大常委会在行使
A.
最高立法权
B.
最高决定权
C.
最高任免权
D.
最高监督权
【简答题】UNIX/ Linux系统为每个进程自动打开三个文件，分别是标准输入，标准输出，
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