15. What are the two speakers talking about?
A.The bus service in US.
B. The trip in US’s West Coast.
C. The trip in US’s East Coast.
16.What is the problem of Los Angeles?
A. Its transportatoin is bad.
B. It has too many people.
C. It has few trees.
17.Which did woman not visit?
A.New Orleans. B.Hollywood C.Disneyland.
