⑥           
A、A contrast sentence. / The focus sentence.
B、An explanation for the phenomenon.
C、A phenomenon.
D、An explanation of the focus – "cost" 无解析
大学英语：英语语言技能提高方法

章节列表

Unit 1 Approaches to Enlarging Your Vocabulary14Unit 2 Approaches to Improving Listening Skills30Unit 3 Approaches to Improving Speaking Skills28Unit 4 Approaches to Improving Reading Skills19Unit 5 Approaches to Improving Writing Skills30Unit 6 Approaches to Improving Translating Skills10
⑥            A、A contrast sentence. / The focus sentenc - Unit 4 Approaches to Improving Reading Skills - 大学英语：英语语言技能提高方法 - U校园 | 大学网课搜题引擎