题目内容

听下面一段材料,回答第1至3题.
1. When did the story mentioned in the talk take place?
A. In 1900s.          
B. In 1800s.          
C. In 1700s.
2. Why did Dr. Carroll do such an experiment?
A. To make a drug.      
B. To prove a guess.        
C. To cure a patient.
3. How did the experiment turn out?
A. Dr. Carroll lost his life.        
B. Dr. Carroll survived.        
C. Dr. Carroll was disabled.
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