If a person's family has had an ulcer, he is three times more likely to get ulcer than people

without a family history of ulcers.

• A、True
  
  

• B、False
  
  

• C、Not Given
  
  

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.