【单选题】听力原文:W: I just read a curious fact. Did you know that people who spend less than ten minutes in a drugstore are five times more likely to make a purchase than those who spend half an hour there? M: I ...
A.
The relationship of purchases to time spent in shopping.
B.
The length of time required for drugstore shopping.
C.
The increases in the size and stock of drugstores.