A、Art. B、Harmony. C、Prosperity. D、Ambition. B新闻中指出，这个音乐会是关于和平(peace)，通过音乐和艺术将人们聚集在一起。他们之所以来是为了宣扬和平。因此这一音乐会的主题是和平、和谐相处，B项Harmony是

As many as a million Cubans are said to have attended the free concert in Havana’s revolution square that featured some of the Latin America’s most popular musicians. Many in the crowd came dress in white to symbolize peace. The 5-hour event included the bands from seven countries. It was organized by the Miami base Colombian rock star Wallace.
    "This concert is .just about peace, is just about possibility to get together, you know, through music, through art. And this particular case of Cuba have isolated from the rest of community for many years, just because of political belief. So we just want to come here and saying well, we are here, we are the same. So that is the reason why we are here to promote peace."
    3. What is the theme of the concert?
    4. What can we learn about the concert?