Michael's idea was to tell customers to take goods from the shelves themselves.
查看答案
Michael had to do three things to make his idea work.
A. 对
B. 错
Michael sorted goods into groups like"fruit and vegetables," for example.
A. 对
B. 错
Customers had to pack the goods into small packets.
A. 对
B. 错
Cullen opened the world's first real supermarket in 1930.
A. 对
B. 错
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