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TOEFL
/
Listening practice
/ Section TJD6
Listen to an Academic Talk
Listen to part of a talk in a food science class.
Listen
27. Why does the speaker mention the length of the human gut?
A
To explain why humans eat more frequently than other primates
B
To show that cooking allowed costly digestive machinery to be reduced
C
To argue that raw diets are harmful over long periods
D
To describe how digestion differs between individuals