在外语教学中,一个首要的问题就是找到程度适宜的教学材料,因此,人们不断地筛选、改编和修改原文以使所用材料适应不同程度的语言学习者。就阅读课而言,选择教材就是找到难度适宜的文章,使教学中所用材料有很强的可读性(Readability)。不同的材料有不同的可 In foreign language teaching, one of the most important problems is to find a suitable level of teaching materials. Therefore, people constantly screen, adapt and modify the original materials to adapt the materials to different levels of language learners. In terms of reading, the choice of textbook is to find articles of appropriate difficulty that make the materials used in teaching highly readable. Different materials can be different