67.下列何者可用來製造Smallpox vaccine?
(A)Cowpox virus
(B)Vaccinia virus
(C)Variola virus
(D)Pseudocowpox virus
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統計: A(422), B(1146), C(217), D(32), E(0) #2972741
統計: A(422), B(1146), C(217), D(32), E(0) #2972741