题目内容：
In this section you will hear everything ONCE ONL Y．Listen carefully and then answer the questions that follow．Mark the correct answer to each question on your coloured answer sheet．Question 6 is based on the following news．At the end of the news item，you will be given l0seconds to answer the question．Now listen to the news．The news item is mainly about
A．a call for research papers to be read at the conferenc B．an international conference on traditional Tibetan medicin
C．the number of participants at the conference and their nationalitie
D．the preparations made by the sponsors for the international conferenc
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