【单选题】vary v.(同类事物间)相异 gambling n. predict v. 预测 Listen to a passage and choose the best answer to each of the following questions. [音频] What is said about the coin flip experiment?
A.
It rewards $3 or $5 to each report of “heads”.
B.
It rewards $3 or $5 to each report of “tails”.
C.
It cannot tell whether the participant tells a lie.