It can be inferred from the passage that all of the following are with of producing new strains of influenza viruses except ______ .
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
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
举一反三
- It can be inferred from the passage that all of the following are ways of producing new strains of influenza viruses EXCEPT _____.
- Latency is an outcome particularly characteristic of which one of the following virus groups? A: Polioviruses B: Herpes viruses C: Rhinoviruses D: Influenza viruses
- New strains of viruses are transmitted to man by_____.
- Viruses are active all the time.
- As influenza is caused by a variety of species and strains of viruses, in any given year some strains can die out while others create (1), while yet another strain can cause a (2).