Teachers' role conversion in pre-writing phase is regarded as important in college English writing reform.
大学英语写作教学改革中重要的一环就是写前阶段教师的角色转换。
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Adopting fast bed-turbulent bed regeneration technology to reform the RFCC unit with pre-combustor is an effective way to solve the problems existing in the unit when processing heavy feedstock.
Some effective forms of pre-curricular and extra-curricular learning activities for Biology lessons of junior high schools in the new curriculum reform background.