套路三：信号词在复杂专业内容中指引关键信息
在听力中有一些词本身意义并不重要，重要的是其在信息之间起到提示信号作用，在听力中，如果能对这些词迅速做出反应，就能事半功倍了(信号词主要包含否定词、转折词、并列词及强调词等)。
比如：C5T4S3 Q25-Q27 大家通过原文难看出信号词的重要性。
Q 25 ......But I think they’re much more cautious than that and expect they will start trying to find individuals who’d be prepared to back them with some of the capital they need.
Q27 .....But a more ambitious approach，and one which I think would have more chance of success， would be to alter how they’re running things-the management layers and the processes.
Q28......and I want you to take Box Telecom as an example and suggest some ways in which they might overcome their Problems.
