[originaltext]M: How much are these pens, please?W: 2 for 7 dollars now. They

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问题

M: How much are these pens, please?
W: 2 for 7 dollars now. They used to be 5 dollars each.
Q: How much will the man have to pay if he buys 4 pens?

选项 A、＄ 7.
B、＄ 10.
C、＄ 5.
D、＄ 14.

答案 D

解析

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[originaltext]W:Tim,weneedtodosomethingaboutSteve.M:What’stheproble