2. 外语
  3. According to the passage, scientists have discovered that influenza viruses ______ . It can be inferred from the passage that a

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

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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
解析
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