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【简答题】
盒子里有两枚偏畸硬币，硬币1正面向上的概率为p，硬币2正面向上的概率为1-p，0＜p＜0.5。随机取一枚硬币并且连续投掷。用Z∈{1，2}表示所选择的硬币，X 1 ，X 2 ，X 3 ，…表示每次投掷的结果(正面或反面)。
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举一反三
【单选题】These are the pictures of the hotel __________ we held our annual meetings.
A.
that
B.
when
C.
which
D.
where
【简答题】到2035年我国基本实现现代化,这比十七大提出的“三步走”基本实现现代化的战略提前了多少年A. 5年 B. 10年 C. 15年 D. 20年
【单选题】They have held three meetings this week _________.
A.
alone
B.
lonely
C.
ever
D.
just
【单选题】The following are why meetings are held except _______.
A.
Different and unexpected ideas can be contributed.
B.
Meetings can lead to more imaginative and informed decisions.
C.
Decision can be made faster.
D.
Information is available to more people.
【单选题】It is reported that a series of meetings _____ held about the best way to market the new product.
A.
was
B.
were
C.
has
D.
have
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