单项选择题

A．She wasn’t quite ready to come back to campus.
B．There are more endangered species in zoos than in the wild.
C．The birds won’t learn to keep away from people.
D．She might change her major.
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A．The nuclear transferB．The process taking DNAC．The normal reproductive processD．The creation of cells
A．The nuclear transfer
B．The process taking DNA
C．The normal reproductive process
D．The creation of cells
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