4. The ______ of the disease normally occurs when a healthy
person comes in contact with an infected person.
(A) transmission
(B) commission
(C) permission
(D) intermission
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統計: A(738), B(68), C(69), D(74), E(0) #1589694
統計: A(738), B(68), C(69), D(74), E(0) #1589694