1·Is that optional course as hard as everybody says?
那门选修课真像大家说的那么难吗？
2·The optional course of the specialty is an important part in the curriculum of the higher learning institutions.
专业选修课是高等师范院校课程设置的重要组成部分。
3·I know nothing of advanced mathematics, which was offered as an optional course when I majored in Chinese at Harvard University.
我在哈佛大学主修汉语时，高等数学仅仅是一门选修课，所以我根本不懂高等数学。
4·For those students who are interested, there is an optional course in car maintenance.
为那些感兴趣的同学开了一门有关汽车维修的选修课。
5·Using ways of questionnaire, interview, and investigation, etc, I hive made a thorough analysis and probe into the necessity of optional course of body shaping for college girl students.
采用问卷法、调查访谈法等研究方法，对高职学院女生开设形体选修课，进行了较全面的探析。