Which of the following items are usually included in the Discussion section?

A.a reference to the main purpose or hypothesis of the study

B.a review of the most important findings

C.possible explanations for or speculations about the findings

D.limitations of your study and recommendations for future research

正确答案：a reference to the main purpose or hypothesis of the study；a review of the most important findings；possible explanations for or speculations about the findings；limitations of your study and recommendations for future research