44. According to the passage, which of the following is true of tannins?
(A) They are produced when the bacteria digest the food.
(B) They help to get rid of some bacteria in the mouth.
(C) They help chocolate to dissolve more quickly.
(D) They destroy the surface of the teeth.

答案：登入後查看
統計： A(2), B(26), C(5), D(2), E(0) #622031

jayden

B1 · 2016/06/02

#1365642

最後1段文章有提出 chocolate contains tannins, which help to kill some of the bacteria in the mouth.

巧克力含有tannins 這些能幫助殺死在嘴巴裡的細菌.