31.下列何者是胸腺嘧啶(thymine)在細胞內代謝分解之中間產物?
(A)Uric acid
(B)β-alanine
(C)Carbamoyl phosphate
(D)β-aminoisobutyrate

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統計: A(14), B(23), C(12), D(84), E(0) #1186766