? Other files are not designed to be run by users. ? These support programs contain instructions for puter to use with the main user-executable file. ? In addition to these program files, some data files are included on the CD or DVD. ? These files contain any data that is necessary for a task but not supplied by the user, such as help documentation. ? The data files have extensions such as.txt, .bmp and .hlp.Рrole [rəul] n. 角色?efficiently [i'fiəntli] adv. 高效地?productive [prəu'dktiv] adj. 高产的?versatile ['və:sətail] adj. 通用的?gadget ['ædit] n. 小玩意?freeware ['fri:wεə] n. 免费软件РVocabulary and Keywords(生词和关键词)Рdownload ['daunləud] v. 下载?essentially [i'senəli] adv. 本质上?software publisher 软件开发商?specialize ['speəlaiz] v. 专门从事?extension [ik'stenən] n. 扩展?user-executable program file用户可执行的程序文件
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