Q. 65 The horse has played a little known but very important role in the filed of
medicine. Horses were injected with toxins of diseases until their blood build
up immunities. Then a serum was made from their blood. Serums to flight with
diphtheria and tetanus were developed this way.
It can be inferred from the passage that horses were
(A) given immunity to diseases
(B) generally quite immune to diseases
(C) given medicines to flight
(D) given diphtheria and tetanus serums
Answer:(B)
Explanation:
