一、各题主题揭示对话主题
　　将各题所考查的主题内容结合在一起，往往可得出整篇对话的主题。如果某一题目是考查对话主题，其中的一个选项明显能够概括其他各题选项的内容，那么该选项很可能为答案。
　　【例1】(710分样卷Conversation One)
　　【预览选项】
　　19. [A]To interview a few job applicants.
　　[B]To fill a vacancy in the company.
　　[C] To advertise for a junior sales manager.
　　[D] To apply for a job in a major newspaper.
　　20. [A]A hard working ambitious young man.
　　[B]A young man good at managing his time.
　　[C]A college graduate with practical working experience.
　　[D]A young man with his own idea of what is important.
　　21. [A]Not clearly specified.
　　[B]Not likely to be met.
　　[C]Reasonable enough.
　　[D]Apparently sexist
　　【听前预测】
　　预览三道题各选项，由19题中的 interview, applicants, vacancy, advertise for a manager, apply for a job 等词语可以推测对话与刊登招聘广告或应聘工作有关。而20题中 hardworking, ambitious, good at managing his time, with practical working experience, with his own idea 等词语则表明对话中还涉及到对所招聘人员的要求。