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TOEFL
/
Listening practice
/ Section BPEK
Listen to an Academic Talk
Listen to a talk in a physics class.
Listen
47. Why does the speaker mention a baby crying?
A
To explain why padding is no longer necessary
B
To give an example of a sound the technology handles less well
C
To describe a sound that is especially easy to cancel
D
To show that the headphones can protect children's hearing