46. What can be inferred from the passage about penicillin?
(A) It effectively treats fungus infections.
(B) It was developed before nystatin.
(C) It was developed before the Second World War.
(D) One of its by-products is nystatin.
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統計: A(30), B(28), C(14), D(7), E(0) #803790
統計: A(30), B(28), C(14), D(7), E(0) #803790