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TOEFL
/
Listening practice
/ Section FDW5
Listen to an Academic Talk
Listen to part of a talk.
Listen
25. What is the talk mainly about?
A
Explaining why all instruments playing one note sound identical.
B
Showing that a louder note must have a higher pitch.
C
Replacing listening activities with memorized definitions.
D
Using comparisons to distinguish different features of sound.