单项选择题

Questions 14~16 are based on the opening speech of the Chairman of the final session in an international conference and a statement made by Dr. Martin. You now have 15 seconds to read Questions 14~16.
What is the task which Dr. Martin and other committee members feel difficult

A.Preparing summaries.
B.Holding group discussions.
C.Understanding the themes of some speeches.
D.Satisfying the conference participants.