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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
28. Why does the speaker bring up bats?
A
To show that the constraint on live birth is not an absolute rule
B
To argue that bats are better adapted to flight than birds
C
To explain why bats are smaller than most birds
D
To suggest that live birth evolved more than once