此软件是帮助学习英语的一个小工具。可实现MP3文件和对应的PDF文件联动打开。要求是：两个文件的主名相同。可设定各自文件的打开工具。运行后有右键菜单。-This software is to help learning English, a small tool. MP3 files can be achieved and the corresponding linkage to open PDF documents. Requirements are: the name of the same