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单项选择题

Which of the following is NOT mentioned as a factor to make retail sales rise？（）

A.More money spent on clothing.
B.More automobile sales.
C.Stationery promotions.
D.Lower luxury taxes.

单项选择题

Which of the following statements is INCORRECT of the experiment？（）

A.The subject entered a hypnotic state.
B.Similar experiments had been done before.
C.It found out something that is unknown to all.
D.Trolleyology is a technique to analyze utilitarianism.