CNN Student News CNN Student News - December 19, 2013 zetty 2013. 12. 23. 19:01 On Thursday, we discuss the U.S. Olympic delegation, unusual behavior in some marine animals, and a company's training program for space tourists. 오디오로 듣기 동영상으로 보기 스크립트 보기 다운로드 저작자표시 비영리