单项选择题

Questions 25 and 26 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions.
Which of the following is NOT the role of Raui Castro

A.Brother of the former Cuban leader.
B.Used to be first secretary to the Central Committee of the Communist Party of Cuba.
C.The Central Committee of the Communist Party of Cuba.
D.The present Cuban leader.