单项选择题

Passage Three
Questions 32 to 35 are based on the passage you have just heard.

A．Because he was too old to do his duties.
B．Because he asked for retirement.
C．Because she mistook his words.
D．Because she doubted his honesty.
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单项选择题
What does the author tell us about the prediction market in the passage
A．It now has become a major management way for most companies.
B．The advocates are too optimistic about prediction market.
C．It is a way to know firms’ own covert knowledge.
D．It works by giving traders an actual trading accounts.
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