YDS CÜMLE ATMA / TEST 4 21. Soru

21.

- (I) In today's world, the chances of a plague
pandemic are relatively small. (II) We are
protected by improvements in medicine,
hygiene, and nutrition. (III) The Spanish flu is a
good example. (IV) But new threats have
appeared as well. (V) One is the speed at
which diseases now spread.