第25题: [单项选择]From the last paragraph readers can learn ______. A. why a slang word is no longer slang B. how to understand slang words C. at what time a slang word is no longer slang D. how slang words are used 参考答案:C 答案解析:[精解] 关于文章段落主题的题。题目问:从最后一段中读者可以知道什么 在最后一段中,作者用"hot dog"、"varsity"和"Jazz"三个俚语说明了俚语到什么时候不再是俚语。所以选项[C]at