I Introduce

  1. Name
  2. Class
  3. Topic

 

II   Catalog

  1. What is black tea?
  2. Where is black from?
  3. How to drink?

 

III What is black tea?

  1. Who made the first black tea?
  2. How did people make black tea?
  3. What is black tea good for?

 

IV Where is black from?

  1. Country
  2. Country make it most
  3. Environment

 

V How to make black tea?

  1. Processing of black tea
    1. Step1
    2. Step2
    3. Step3
    4. Stpe4