Ключевые слова: adult, audience, back, briefing of students, business, business conferences, businessman, central, conferences, congress, consultations, cooperation, corporate, development, education, entrepreneur, entrepreneurship, events, exhibition, explaining the participants, gesturing, group, group of people, head, information, knowledge, learning, lecture, listening, male, meetings, presentation, professional, public, research, scientist, sitting, speaker, talking, teacher, the forum, the lecturer, the performance, the rostrum, training, university,