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TOEFL
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Listening practice
/ Section PM25
Listen to an Academic Talk
Listen to part of a talk in a medical statistics class.
Listen
44. What is the talk mainly about?
A
Why placebo controls should be removed from clinical trials
B
What the improvement seen in a placebo group actually consists of
C
How patients can be persuaded that a treatment is working
D
Why pain is more difficult to measure than blood pressure