martes, 5 de diciembre de 2017

LEARNING ABOUT COMMON ILLNESSES AND HOW TO PREVENT THEM - 4th COURSE






 




by Marimí


4 comentarios:

  1. In what century was discovered the vaccine?
    How did they discovered the vaccine?

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  2. What 3 things did he need to prove it ?

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  3. When was the X-ray machine invented?
    What country was Alexander Fleming from?
    Giorgiana 4A

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