_广东成考网

 Researchers are trying to（）what’s wrong with their experiments. 

• A、pull out
  
  

• B、call out
  
  

• C、take out
  
  

• D、 figure out
  
  

2.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、f（ear）
  
  

• B、b（ear）
  
  

• C、w（ear）
  
  

• D、p（ear）
  
  

56.(  )