According to the passage, scientists have discovered that influenza viruses ______. It can be inferred from the passage that al

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问题 According to the passage, scientists have discovered that influenza viruses ______.
It can be inferred from the passage that all of the following are with of producing new strains of influenza viruses except ______.

选项 A、two influenza viruses in the same animal recombining
B、animal viruses recombining with human viruses
C、two animal viruses recombining in one animal
D、two animal viruses recombining in a human

答案D

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