60.(  )

1. 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、sh（ou）t
  
  

• B、cl（ou）d
  
  

• C、m（ou）se
  
  

• D、 t（ou）gh
  
  

22.（  ）

• A、attribute
  
  

• B、contribute
  
  

• C、substitute 
  
  

• D、distribute