单项选择题
Questions 19 and 20 are based on the following news. At the end of the news item, you will be given 10 seconds to answer each of the two questions. Now listen to the news.
Which of the following best describe the role of the charter()
A.The Charter only describes powers of the UN bodies.
B.The Charter mainly aims to promote world economy.
C.The charter is a treaty above all other treaties.
D.The charter authorizes reforms in UN bodies.