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【单选题】
若已知一个栈的进栈序列是 1 2 3 ....,n ,则输出序列为 P1,P2,P3,...,Pn ,若 P1=n ,则 Pi 为 ______A.
i
B.
n-i
C.
n-i+1
D.
不确定
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A.
She has none at present.
B.
She has bought a new one.
C.
She has only an old one.
D.
Her brother has given her one.
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A.
I wonder how
B.
I don't wonder
C.
Sorry, it's out of order
D.
No wonder, here it
【简答题】quiz 4
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A.
She has bought a new one.
B.
She has none at present.
C.
She has only an old one.
D.
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【单选题】听力原文：M: I wonder if I could borrow your calculator, please? W: You certainly could if I had one, but I gave my old one to my sister when she entered high school, and I have not bought a new one yet. Q...
A.
She has bought a new one.
B.
She has none at present.
C.
She has only an old one.
D.
Her sister has given her one.
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