66.下列何者為天然抗生素(atibiotics)?
(A)clarithromycin
(B)florfenicol
(C)chlortetracycline
(D)enrofloxacin
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統計: A(643), B(363), C(1182), D(406), E(0) #2405622
統計: A(643), B(363), C(1182), D(406), E(0) #2405622