单项选择题

The arguments that cloning will have harmful effects ______.

A．are very convincing
B．have forced people to stop cloning
C．have forced people to question the concept of cloning
D．have compelled people to debate the implications of cloning

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热门试题

单项选择题

What is the major problem with using animals as body for growing human organs

A．Animals will no longer be savage.
B．Humans will be as savage as animals.
C．A clear line will be missing between humans and animals.
D．Animals will have to be given fights of citizenship.

单项选择题

How many of those trial implants fail to survive

A．277
B．276
C．19
D．4