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【单选题】
听力原文：Mary and I work in the same office. We are on five days and off two days in a week. Every time I see her, she is wearing a different silk scarf. The speaker sees Mary wear __________ different silk scarves in a week.A.
2
B.
5
C.
7
D.
6
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反馈参考答案：
举一反三
【多选题】Regarding median, which of the followings are correct?
A.
If x is the median of a dataset, then 50% of the dataset are >= x, and 50% of the dataset are <= x.
B.
Median can be computed for both ordinal data and numeric data.
C.
Compared with mean, median is less affected by extreme values in the dataset.
D.
Compared with mean, median can be accurately computed in less time.
【单选题】Finding information is not a big deal today.. --- Well, the ______is how we can tell whether the information is useful or nit..
A.
courage
B.
message
C.
challenge
D.
knowledge
【简答题】How can we know men are not in a cr besides their doctorates?
【简答题】What is median
【单选题】Do you know _____ “hello” in French?
A.
what to say
B.
what can we say
C.
how to say
D.
how can we say
【简答题】中点选民(median voter)
【简答题】median incubation period
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