题目内容

19.听第9段材料,回答第13至15题.
13.What makes shoppers tired?
A.Queuing for electrically-driven cars.
B.Looking for what they want to buy.
C.Carrying shopping around.
14.What is the problem for building moving walkways in the store?
A.The space       B.The redesign.C.The technology.
15.Where will the computer system send the things shoppers buy?
A.To the exit     B.To the shelf    C.To the shoppers'homes.

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