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【单选题】
研究者想要了解的总体的某种特征值称为A.
参数
B.
统计量
C.
变量
D.
变量值
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反馈参考答案：
举一反三
【单选题】听力原文：M: Do you know what happened to me today? I was so embarrassed. W: What? M: Well, Dr. Brown's class finished ten minutes early, so I went to the library between classes. I knew I didn't have much...
A.
One of his classes finished early.
B.
His books were ten days overdue.
C.
He wanted to get some studying done.
D.
The library had a special display on the Industrial Revolution.
【单选题】---_________ ? ---I’m not sure, but he might have been ill in bed.
A.
What do you think has happened to Tom
B.
What do you think Tom has happened
C.
Do you think what has happened to Tom
D.
Do you think what Tom has happened
【单选题】What's the type of writing is the text?
A.
biography
B.
autobiography
C.
argumatation
D.
documentary
【简答题】设有 int n=2;则++n+1==4,n的结果是 ( )
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