The research indicated that, teachers generally neglect preconceptions of students in the concept teaching, and lack the diagnostic method and technology, also the corresponding teaching strategy.
研究表明，教师在概念教学中普遍忽视学生的前概念，缺少相关的诊断方法与技术，也缺少相应的教学策略。
2
According to the correlation between language teaching and testing, language tests involve five basic types: proficiency test, aptitude test, achievement test, diagnostic test, placement test.