teaching objectives hierarchical
...教学目标层次化；分层授课；分类指导；分层练习 [gap=384]Key words】Hierarchical group teaching;Teaching objectives hierarchical;Layered medium of instruction;Classification guidance;Stratified practice ..
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teaching objectives hierarchical
教学目标分层
以上为机器翻译结果，长、整句建议使用 人工翻译 。