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
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单项选择题
According to the passage, why are profit opportunities rare
A．Few people can get a hot tip in the market.
B．Few people have quicker insights than others.
C．Few people are searching such opportunities.
D．Such opportunities are quickly eliminate
单项选择题
From the example of two people walking along, one an economist and the other a non-economist, we can see that______.
A．the economist may apply the view of profit opportunities excessively
B．the economist has quicker insights than the non-economist
C．the economist has a better understanding of profit opportunities than the non- economist does
D．profit opportunities appear even in our daily life
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