問題詳情
12.Calcium ________ causes many elderly people to suffer from broken bones so the elderly should drink more milk.
(A)efficiency
(B)proficiency
(C)deficiency
(D)frequency
參考答案
答案：C
難度：適中0.639118
統計：A(40),B(23),C(232),D(39),E(0)
用户評論
【皮蛋】評論
(A)efficiency 效率(B)proficiency 精通(C)deficiency 缺乏(D)frequency 頻繁