... NATIONAL UNIVERSITY, HANOIUNIVERSITY OF LANGUAGES AND INTERNATIONAL STUDIESDEPARTMENT OF POST-GRADUATE STUDIES BÙI HẢI SƠNM.A. MINOR THESISAN AMERICAN – VIETNAMESE CROSS-CULTURAL STUDY ON NON-VERBAL ... Cohort: MA 15 Hanoi, 2009VIETNAM NATIONAL UNIVERSITY, HANOIUNIVERSITY OF LANGUAGES AND INTERNATIONAL STUDIESDEPARTMENT OF POST-GRADUATE STUDIES ... LANGUAGES AND INTERNATIONAL STUDIESDEPARTMENT OF POST-GRADUATE STUDIES NGUYỄN VĂN A M.A. MINOR THESISSYNTACTIC AND SEMANTICO-PRAGMATIC FEATURES OF YES-NO QUESTIONS IN ENGLISH AND CÓ-KHÔNG QUESTIONS...