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填空题— to—删去to

单项选择题Which of the following is true about efficient markets

A．All the markets are efficient markets.
B．There are no profit opportunities in efficient markets.
C．In efficient markets, professionals have an advantage over non-professionals.
D．Efficiency is given priority in efficient market.

单项选择题It is implied that cloning draws fierce criticism from ethicists, religious leaders and US President Bush because______.

A．it is conceptually hyped
B．it is morally controversial
C．it is extremely difficult
D．it is not scientifically viable

填空题speak—改成speaking

填空题fair