阿摩線上測驗
43.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.
答案：登入後查看
統計： A(0), B(0), C(0), D(2), E(0) #3341188
統計： A(0), B(0), C(0), D(2), E(0) #3341188
