Questions 24 and 25 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions. Now, listen to the news.

How many people come to Park City every January

A．They carried passengers, but not cargo.
B．They were large, but surprisingly fast.
C．They were the first successful steam-powered ships.
D．They were more reliable than other ships of the 1860’s.

A．the two speakers are the student and the professor.
B．the development of Iarge cities in the developing countries is not balanced.
C．the large cities in the developing countries grew as rapidly as those in the developed countries.
D．it’s easy to solve the problems of the large cities.