They were not selected for security reasons. From a Yahoo news article "The students attending had clearly been vetted and their questions approved by the Chinese authorities. Two of the four questions from the audience came from student officers of the Communist Youth League" (http://news.yahoo.com/s/csm/20091116/wl_csm/otownhall)
Slashdot Mirror
They were not selected for security reasons. From a Yahoo news article "The students attending had clearly been vetted and their questions approved by the Chinese authorities. Two of the four questions from the audience came from student officers of the Communist Youth League" (http://news.yahoo.com/s/csm/20091116/wl_csm/otownhall)