2. 职称英语
  3. According to the passage, scientists have discovered that influenza viruses ____

According to the passage, scientists have discovered that influenza viruses ____

游客2023-09-28  62
问题 According to the passage, scientists have discovered that influenza viruses ______. [br] 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
解析
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