笔者观察了两个英语专业班级连续几个月的口语课堂教学，并在结束时做了一份问卷。
The author had observed for several months the oral English training sessions of two groups of sophomores majoring in English before the questionnaire was delivered to them.
为此作者选定了一个使用此光盘软件进行课常教学四个月的大学一年级本科专业班级学生进行问卷调查从而获得了珍贵的第一手资料。
A group of college students who have learned with the CD-ROM program for four months are chosen to make judgments of the program by answering the questions according to their own learning experience.
为此作者选定了一个使用此光盘软件进行课常教学四个月的大学一年级本科专业班级学生进行问卷调查从而获得了珍贵的第一手资料。
A group of college students who have learned with the CD-ROM program for four months are chosen to make judgments of the program by answering the questions according to their own learning experience.
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