Incidence of the methodology applied in teaching a foreign language to students from Advanced Intensive English I, of the Bachelor of Arts in English with emphasis in teaching, semester II-2015, in the Department of Foreign languages of the University of El Salvador in San Salvador, in comparison with the students from Advanced Intensive English I, of the Bachelor of Arts in English with Emphasis in Teaching, semester II-2015, in the Department of Foreign Languages of the University of El Salvador in Santa Ana - Vásquez Rodríguez, Karen Elizabeth