• 2022-06-06
    The successful attempt to save a badly bitten boy in 1885 was based on the theory that______.
    A: infective agent of rabies could be used for vaccination
    B: a series of injections of new virus could make people resistant to rabies
    C: the infective agent of rabies could be recovered from the infected body
    D: the longer incubation period would enable human body to build up enough resistance
  • D
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