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单项选择题
Why is it likely for those cloned animals born alive to have abnormalities
A．Scientists haven’t got the faintest idea at all.
B．Scientists haven’t researched into the cause.
C．Scientists speculate that there must be something wrong in the genetic reprogramming.
D．Scientists calculate that those animals are susceptible to diseases.
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 eliminated.
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