大学英语：operate: v 运转、操作、动手术;operation : n 手术，操作;operator: 操作者

　　11. research into对…进行研究

　　She is researching into possible cures for AIDS.

　　12. swallow up: 吞没、耗尽

　　Many small businesses have been swallowed up by large companies.

　　13. apply to sb/sth：适用于某人/某事，请对比：

　　apply to sb for sth向某人申请某事;apply A to B将A 应用于B

　　1). You should apply what you have learned to your work.

　　2). I applied to him for a new job.

　　3). The study method doesn't apply to everyone

　　Analyze the important sentences among the text