单项选择题
[听力原文] M: How much are these books W: Filly cents each or three for one dollar and twenty.
A．$1. B．$1.20. C．$1.50. D．$2.
A．To show the products of his company. B．To sell the products of his company. C．To explain the products to the woman later. D．To buy the products of the Family Shopping Center.