問題詳情
74.在體內可以轉化成維生素 A，有助於改善幼兒夜盲症的營養素是：
(A)胡蘿蔔素
(B)維生素 C
(C)葉酸
(D)維生素 B1。
(A)胡蘿蔔素
(B)維生素 C
(C)葉酸
(D)維生素 B1。
參考答案
答案：A
難度：簡單0.898398
統計：A(1963),B(15),C(133),D(74),E(0)
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