問題詳情

30.Newborns usually receive an injection of vitamin_to protect them against deficiency untiltheir gastrointestinal tract has matured.
(A)A
(B)D
(C)B
(D)K

參考答案

答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)