• 2022-06-08
    Secondary infection also refers to the second time a host becomes infected with the same pathogen?
  • 内容

    • 0

      He worked well and was praised ______ in public. A: a second time B: twice time C: the second time D: for a second time

    • 1

      The stock market main two sections are: A: Primary and secondary B: Real time and future time C: Primary and Real time D: Secondary and future time

    • 2

      The basic features of infectious disease are A: There are infectivity, pathogen, epidemic, immunity. B: There are infectivity, patients, immunity, epidemic. C: There are source of infection, route of transmission, susceptibility, immunity. D: There are infectivity, epidemic, endemic, relapse. E: There are pathogen, reinfection, epidemic, immunity.

    • 3

      Why not do it ________? Let me give you a helping hand this time. A: second time B: a second time C: two time D: the second time

    • 4

      中国大学MOOC: This time he also met misfortune. His engine broke down. He had to land on the sea. This was the second time.