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TOEFL
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Listening practice
/ Section JA4G
Listen to an Academic Talk
Listen to a talk in a business class.
Listen
47. According to the professor, what was one important effect of barcodes on stores?
A
Stores could stay open longer.
B
Stores needed more cashiers.
C
Stores knew exactly which products were selling.
D
Stores began selling more chewing gum.