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【单选题】
设f(x)的定义域为[0,1],则f(sinx)的定义域为A.
[0,1]
B.
[2kπ,2kπ+π/2)∪(2kπ+π/2，2kπ+π]
C.
[2kπ,2kπ+π]
D.
[0，2kπ]
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反馈参考答案：
举一反三
【单选题】复合会计分录是指（ ）。
A.
涉及四个账户的会计分录
B.
涉及两个或两个以上账户的会计分录
C.
及三个或三个以上账户的会计记录
D.
涉及四个或四个以上账户的会计记录
【单选题】听力原文： Back in those primitive times it was unnecessary to have a special form. of exchange value for everything, like a price. In those times the only things that were really valuable were the skills ...
A.
Life was easy and food was easy to find.
B.
People care more about how to survive.
C.
The people took care of each other out of love.
D.
There are many developed individual monetary systems.
【简答题】Em hãy giới thiệu tác giả của bài này.
【单选题】听力原文： Back in those primitive times it was unnecessary to have a special form. of exchange value for everything, like a price. In those times the only things that were really valuable were the skills ...
A.
Life was easy and food was easy to find.
B.
People care more about how to survive.
C.
The people took care of each other out of love.
D.
There are many developed individual monetary systems.
【单选题】听力原文： Back in those primitive times it was unnecessary to have a special form. of exchange value for everything, like a price. In thee times the only things that were really valuable were the skills t...
A.
Life was easy and food was easy to find.
B.
People care more about how to survive.
C.
The people took care of each other out of love.
D.
There are many developed individual monetary systems.
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