read the article and identify 6 critical feature of the introduction part

read the article and identify 6 critical feature of the introduction part. Read the article, Identify the 6 critical features of the intro part, see PPT page 25-38 it told you what is the 6 critical features are and provide examples for you) 

1. Introduce Problem 

2. Develop Background

3. The Authors’ Twist (gap)

4. Rationale for study

5. State your hypothesis

6. Preview of Current Work

read the article and identify 6 critical feature of the introduction part