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TOEFL
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Listening practice
/ Section 4V75
Listen to an Academic Talk
Listen to part of a talk in a zoology class.
Listen
27. Why does the speaker mention where the grinding of food takes place?
A
To explain why birds need to eat frequently
B
To show that mass is kept near the centre of balance
C
To argue that teeth would be useless to a bird
D
To describe how birds digest hard seeds