听力原文：

B: What are your favorite animals, Lucy?  

G: I like cats. They’re cute. I like monkeys, too. 

B: Why?  

G: Because they’re clever. What animals do you like, Sam? 

B: I like elephants.  

G: Why do you like them?  

B: Because they are helpful. They can carry things. 

G: Yes, but they’re also dangerous!  

B: I see elephants at the zoo. I don’t keep them at home. 

G: OK. What are your favorite pets?  

B: I like dogs. They’re useful. They can keep our homes safe.

答案： 1. A