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【单选题】
听力原文:M: I am so relieved, I just finished the story I was working on for our creative writing course. W: I haven't quite finished mine yet. I had trouble getting past the beginning. M: How come? W: Well, I was really happy to be writing a detective story. But after the first few pages, I sort of froze up mentally. I just couldn't write any more. M: The same thing happened to me. I thought it meant I lack imagination. W: Well, Professor Wilson said it's pretty common for writers to get stuck like that. M: You went to talk to her about it? W: Actually, I went to ask for more time to finish the assignment. But instead she gave me some advice about how to keep from getting stalled writing like that. She said that the first thing I should do is just write anything that comes into my head even if it doesn't make any sense, sort of warm up exercise. M: That is interesting. When I got stuck, I shift to something else, you know, do some work for one of my other courses. W: Well, her methods seem to have worked for me. I've written most of the story, and I should be able to hand it in on time. But first I need go to the jewelry store. M: You are going shopping? Can't you wait until you finish your story? W: I am going there for my story. My detective solves a jewelry store robbery, so I want to take a look at how the jewelry cases are arranged, where the security cameras are located, that sort of thing. (20)
A.
Her professor did not like her story.
B.
She had trouble finishing her assignment.
C.
She did not like the topic she had chosen for her paper.
D.
She was taking too many courses.
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举一反三
【单选题】用样本推断总体,具有代表性的样本是指
A.
总体中最容易获得的部分个体
B.
在总体中随意抽取的任意个体
C.
挑选总体中有代表性的部分个体
D.
用配对方法抽取的部分个体
E.
依照随机化原则抽取的部分个体
【单选题】用样本推断总体,具有代表性的样本通常指的是
A.
总体中最容易获得的部分个体
B.
在总体中随意抽取的任意个体
C.
挑选总体中的有代表性的部分个体
D.
用方法抽取的部分个体
E.
依照随机原则抽取总体中的部分个体
【单选题】用样本推断总体,具有代表性的样本是指
A.
在总体中随意抽取任一个体
B.
总体中最容易获得的部分个体
C.
挑选总体中的有代表性的部分个体
D.
依照随机原则抽取总体中的备份个体
【单选题】用样本推断总体,具有代表性的样本指的是()
A.
总体中最容易获得的部分个体
B.
在总体中随意抽取的部分个体
C.
依照随机原则抽取总体中代表性的部分个体
D.
用配对方法的抽取的部分个体
E.
挑选总体中的有代表性的部分个体
【单选题】用样本推断总体,具有代表性的样本是指( )。
A.
在总体中随意抽取任意个体
B.
剔除总体中偏大或偏小后的部分个体
C.
总体中最容易获得的部分个体
D.
依照随机原则抽取总体中的部分个体
E.
挑选总体中的有代表性的部分个体
【单选题】随着消费商品数量的增加,每单位商品的边际效用( )
A.
先增后减
B.
递增
C.
递减
D.
先增后减
【简答题】前面用递归方式给出了行列式的运算规则,下面试用递归的思想方法求解两个数学题。 (1)导出n个不同元素无重复的全排列公式P n ; (2)已知首项为a,公比0≤q<1的无穷等比级数之和S是有限量,试求S。
【多选题】随着消费商品数量的增加 ( )
A.
总效用先增后减
B.
每单位商品增加的总效用减少
C.
边际效用递减
D.
边际效用总大于零
E.
边际效用会小于零
【单选题】用样本推断总体,具有代表性的样本是
A.
在总体中随意抽取任意个体
B.
总体中最容易获得的部分个体
C.
依照随机原则抽取总体中的部分个体
D.
挑选总体中的有代表性的部分个体
【单选题】下列肌肉中使胫骨在股骨上外旋的是
A.
股二头肌
B.
半膜肌
C.
半腱肌
D.
腘肌
E.
比目鱼肌
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