Questions 18 to 20 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. What is the main purpose of the talk
A.To explain the program to the people present. B.To introduce the people who will participate in the program. C.To announce the winners of the annual international awards. D.To welcome the people, thank the dinner planners and introduce the program.