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TOEFL
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Listening practice
/ Section PU44
Listen to an Academic Talk
Listen to a talk in a history of medicine class.
Listen
27. Why does the professor say that Jenner's experiment would not be allowed today?
A
To show that cowpox is now very rare
B
To point out that it put a child at risk
C
To explain why vaccines are tested on animals
D
To suggest that the results were wrong