Ключевые слова: academic, adult, aged, aged elderly, caucasian, chalkboard, class, classroom, college, copy space, copyspace, education, education school, educator, elderly, exam, grandfather, grey hair, handsome, indoor, knowledge, learn, learn lesson, learning, lecture, lecturer, lesson, man, mature adult, mentor, occupation, old senior, oldage, people, portrait, professor, retirement, school, science, scientist, seminar, study, studying, suit, teach, teacher, teacher class, tutor, tutor study, university,