A.They know what they want to buy.B.They have little money to spend.C.They talk themse

外语类 公共英语 已帮助 人

A.They know what they want to buy.

B.They have little money to spend.

C.They talk themselves out of purchase.

D.They shop at the cheapest stores.

热搜:a是b的充分条件,b是a的必要条件吗