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57.(  )

4.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、 cha（s）e
  
  

• B、ba（s）e
  
  

• C、ea（s）e
  
  

• D、ca（s）e
  
  

What do Teitel' s words in the last paragraph imply?

• A、The tortoises were fond of seeing Earthrise.
  
  

• B、The tortoises were not given due credit for their experience.
  
  

• C、The tortoises were not named after the Soviet spacecraft.
  
  

• D、The tortoises were famous all over the world.