A.abdc | B.acbd | C.bacd | D.bcad |
A.the Concierge is cheaper than the Buddy devices |
B.intelligent shopping carts cost a large sum of money |
C.shop assistants with computer knowledge are well paid |
D.average stores prefer the Concierge to the Buddy devices |
A.New computers make shopping carts smarter |
B.Concierge and Shopping Buddy |
C.New age for supermarkets |
D.Touch-screen devices make shopping enjoyable |