It can be inferred from the passage that all of the following are ways of producing new strains of influenza viruses EXCEPT _____.
选项:
A:two influenza viruses in the same animal are combining
B:animal viruses recombining with human viruses
C:two animal viruses recombining in one animal
D:two animal viruses recombining in a human
发布时间:2024-06-20 23:54:07