Questions 14 to 16 are based on the
following passage. At the end of the passage, you will be given 15 seconds to
answer the questions. Now listen to the
passage.
Why was the United States called a" melting pot"
A．Most immigrants have settled in big cities. B．Its population consists of people from various countries. C．Most people tend to forget where their ancestors came from. D．People gathered in racial groups.