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TOEFL
/
Listening practice
/ Section HCSV
Listen to an Academic Talk
Listen to a talk in a psychology class.
Listen
47. Why does the professor say, "Placebos don't shrink tumors or cure infections"?
A
To suggest that placebos are dangerous
B
To introduce a new type of treatment
C
To limit the claims that can be made about placebos
D
To explain why the Harvard study failed