試題詳解

41. What is the main idea of the passage？
(A) All the expressions related to the digestive system have been proved to be evidence-based.
(B) Traditional medical treatment to digestive symptoms leads to greater improvement than other approaches.
(C) One’s gastrointestinal state is responsive to his psychological state and vice versa.
(D) It is of vital importance to take good care of one’s gastrointestinal system.