70 years ago doctors could cure infections
the situation was very different 70 years ago
alxander fleming developed penicilli
all bacteria became resistant to penicillin after a few years
the first trial of penicillin was on rats
Unfortunately,some bacteria became resistant to peni after a few years becaues of the overuse of antibiotics
use the words form the box to complete the sentences about the text
mould prescribe resistant trial infections cure bacteria