题干
Mary: Helen is a mere washer woman, yet she's now buying a big house.
Carol: Yes. Because she's always saved ________.
Carol: Yes. Because she's always saved ________.
A：what little she ear
B：how little she ear
C：for little she ear
D：with little she ear
答案(点此获取答案解析）
A
，且
，若
，则实数P的值为