A. ①②③ B. ①②④ C. ①③④ D. ②③④ 参考答案:B 答案解析:非公有制经济对于增强我国经济实力具有重要作用而不是关键性作用。排除选项③,故本题答案为B。
第25题: [单项选择]Why was the man late A. Busy traffic. B. Heavy rain. C. Broken car. 参考答案:A 答案解析:[听力原文] W: Why were you so late today M: The traffic was so busy that my car hardly moved for