57.(  )

3. Directions:In each of the following groups of words, there are four underlined letters or letter combinations marked A, B, C and D. Compare the underlined parts and identify the one that is different from the others in pronunciation. Mark your answer by blackening the corresponding letter on the Answer Sheet.（）

• A、P（o）st
  
  

• B、 c（o）st
  
  

• C、 m（o）st
  
  

• D、h（o）st
  
  

What is a vegan in this passage?

• A、 A person who likes to grow vegetables.
  
  

• B、A person who is fond of eating meat.
  
  

• C、A person who keeps a plant-based diet.
  
  

• D、A person who stays away from animals.