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假设你执行了下列的栈操作：s=Stack（）

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假设你执行了下列的栈操作：s=Stack（）

s.push(1)

s.push(3)

s.push(5)

s.pop（）

s.push(7)现在栈内还有哪些元素？

A.1,5,7

B.3,5,7

C.1,3,7

D.1,3,5

参考答案:

答案：1,3,7

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