Which of the following statements is the best title for the passage?
【正确答案】
C
【答案解析】解析：重点把握篇章的首句，一般该句点明全篇主题。
单选题
According to the study, how many languages are under threat now?
【正确答案】
D
【答案解析】解析：掌握与数字相关的短语表达，才能对文中数字概念作出正确判断。
单选题
Which of the following languages is NOT mentioned in the passage?
【正确答案】
B
【答案解析】解析：根据题干特点，重点听文中关于语言的专有名词。
单选题
Why is the case of Ainu, the Japanese dialect, mentioned in the passage?
【正确答案】
C
【答案解析】解析：把握文章主题句和支持性细节的关系有助于判断上下文内容间的逻辑关系。
单选题
Which of the following statements is NOT true according to the passage?
【正确答案】
B
【答案解析】解析：掌握某些词汇或短语的同义替换，是事实细节找寻和判断的重要手段。如本题中需掌握原文中a dramatic increase与选项中acceleration是同义替换。