322- According to the text, typhus is commonly found ------- .
A) in especially overcrowded and dirty places
B) among school children or babies
C) in contemporary industrialised countries
D) in the neighbourhoods close to prisons
E) in areas where the population is on the rapid increase
323- The author states that once typhus has started, ------- .
A) the non-hygienic conditions of prisons are put the blame on
B) the body is immediately covered in a rash
C) it is very difficult to avoid an epidemic
D) it develops very fast
E) the working conditions in factories have to be improved immediately
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