单项选择题

According to the passage, cloning technology is ______.

A．promising
B．impracticable
C．pleasant
D．controversial
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单项选择题
Cloning has been criticized for all the reasons EXCEPT ______.
A．usefulness in genetics
B．premature aging
C．its effects on the experimental animals
D．safety reasons
单项选择题
The first paragraph mainly suggests ______.
A．some authorities don't like Dolly's cloning in many aspects
B．cloning technology has aroused great anxiety among people
C．President Clinton stopped giving money to researchers on human cloning
D．40-nation Council of Europe had passed a ban on human cloning
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