問題詳情
【題組】42.Why are hard candies especially bad for teeth?
(A) They may break the child’s teeth.
(B) They contain too much sugar.
(C) They help bacteria to produce tannins.
(D) They stay in the mouth for a long time.
參考答案
答案：D
難度：簡單0.714286
統計：A(0),B(2),C(0),D(5),E(0)
用户評論
【晴】評論
It is not exactly what a child eats that truly matters, but how much time it stays in his mouth.the most damaging stuff is something that is sticky or very hard and thus stays in the mouth for a long time.