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TOEFL
/
Listening practice
/ Section 6KLG
Listen to an Academic Talk
Listen to a talk in a technology class.
Listen
42. What is the purpose of the three large squares in the corners of a QR code?
A
They make the code look like a Go board.
B
They help a scanner find the code and its angle.
C
They store the most important information.
D
They show which company made the code.