This story is about a scientist who（   ）

• A、was extraordinary when he was young
  
  

• B、became well-known after an interview
  
  

• C、was smarter than the average person
  
  

• D、achieved great success in the medical field
  
  

Task 2

21. People do voluntary work because they want to（   ）

22. Some volunteers help others by（   ）

23. Some organizations rely on volunteers to help（   ）

24. The elderly can have their meals delivered without（   ）

25. Many volunteers returning from poor countries（   ）

A. help others

B. leaving their homes

C. cooking for the elderly

D. using their professional skills

E.find their experience rewarding

F.preserve the natural environment

He got the milk spilt all over the kitchen floor because he（   ）

• A、dropped the bottle
  
  

• B、was naughty
  
  

• C、slipped and fell
  
  

• D、was weak