According to the passage, performers could best meet their obligation to composers by doing which of the following?

• A、Taking courses in art appreciation.
  
  

• B、Knowing how the music was intended to be performed.
  
  

• C、Studying works written at different periods in history.
  
  

• D、Rearranging musical scores for their particular instrument.
  
  

Task 1

16. Paragraph     ①    

17. Paragraph      ②    

18. Paragraph     ③    

19. Paragraph     ④    

20. Paragraph     ⑤    

A. What does the Calorimeter Look Like Inside?

B. What Program Was Designed for the Experiment?

C. What Is a Calorimeter?

D. Try to Find out Why People Gain and Lose Weight

E. How do the Volunteers Kill the Time?

F. Why did Nicola Join in the Experiments?

According to the passage, the advantage that pianists have over other instrumentalists is that they do NOT

• A、tune their own instruments.
  
  

• B、practice as often.
  
  

• C、use their muscles.
  
  

• D、aim for clarity of sound.