朗阁海外考试研究中心分析认为，在雅思考试中这两种方法具体的做法是：首先，在略读时，要花足够的时间去读段落的第一句和第二句，直到完全理解作者的含义，因为第一句往往是该段的主题句（top sentence），而第二句往往是对前句的延伸（extension）或进一步的解释（explanation）。然后，运用扫描，迅速浏览从第三句开始的后面部分，搜寻作者对开头两句的支持句（supporting sentences），并同时注意文章中间是否有转折词（transition），因为这些词常常会把文章的思路逆转或加入其它重要的信息。最后，当读到段落的最后一句时，我们又要使用略读，这时必须再次放慢速度（slow down your pace）直到完全消化作者对段落的小结（conclusion），因为该小结有可能与主题句截然相反或引导读者进入下一个段落。

    我们通过下面的例子来看略读与扫描在是选择段落主题句中的运用。

    段落: Tourism, holiday-making and travel are these days more significant social phenomena than most commentators have considered. On the face of it there could not be a more trivial subject for a book. And indeed since social scientists have had considerable difficulty explaining weightier topics, such as work or politics, it might be thought that they would have great difficulties in accounting for more trivial phenomena such as holiday-making. However, there are interesting parallels with the study of deviance. This involves the investigation of bizarre and idiosyncratic social practices, which happen to be defined as deviant in some societies but not necessarily in others. The assumption is that the investigation of deviance can reveal interesting and significant aspects of "normal" societies. It could be said that a similar analysis can be applied to tourism.