問題詳情

40.Vitamin B-12 is supplied mostly in
(A) fruits and vegetables.
(B) cereal grains.
(C) foods of animal origin.
(D)None of these answers are correct.

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)

內容推薦