id	keyword
cieatasu-945	teaching
cieatasu-945	research
cieatasu-945	teachers
cieatasu-945	mathematics
cieatasu-945	students
cieatasu-945	china
cieatasu-945	study
cieatasu-945	level
cieatasu-945	education
cieatasu-945	training
cieatasu-945	school
cieatasu-945	province
cieatasu-945	learning
cieatasu-945	class
cieatasu-945	lesson
cieatasu-945	teaching research