Ключевые слова: academic, adolescence, book, boy, casual clothing, caucasian, child, chinese, classmate, confidence, development, education, female, friend, friendship, girl, high school, information, intelligence, intelligent, knowledge, learning, leisure, lifestyle, male, mixedrace, modern, moving down, notebook, school, school bag, schoolboy, schoolgirl, secondary, staircase, student, study, studying, teenage, teenager, wisdom, youth,