普通话以 为标准音,以 为基础方言,以 作为语法规范的汉民族共同语

听力原文：W: If we hurry we can take the express train and s...

单项选择题听力原文：W: If we hurry we can take the express train and save an hour.M: Yes. The express

听力原文：W: If we hurry, we can take the express train and ...

单项选择题听力原文：W: If we hurry, we can take the express train and save an hour. Couldn’t we M: Ye

听力原文：W: If we hurry we can take the express train and s...

单项选择题听力原文：W: If we hurry we can take the express train and save an hour, couldn’t we M: Yes