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【简答题】
已知集合 ，集合 ， 集合 ，求 ， ，
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反馈参考答案：
举一反三
【简答题】《 黄帝内经 》 为中医学理论体系的形成 奠定了基础 。
【简答题】全文的中心主旨是书上的哪一句?(或全文要说明的主要问题是什么?)
【单选题】According to the passage, which of the following categories of travelers will gain most from airline alliances?
A.
Travelers who fly frequently economy class.
B.
Travelers who fly frequently business class.
C.
Travelers who fly occasionally during holidays.
D.
Travelers who fly economy class once in a while.
【单选题】It can be inferred that most of the pioneers referred to in the passage were originally from where in the United States?
A.
The desert.
B.
The West.
C.
The State of Mississippi.
D.
The East.
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