两种都可。elective/optional course： 选修课 Optional Elective Course： 任意选修课 例：This course is a specialized optional course for overseas undergraduates who major in Chinese.本课程是为汉语言专业本科的外国留学生开设的一门专业选修课。Is that optional course as hard as everybody says?那个选修课真的就像每个人说的那样难吗?In college, English is a required course and psychology is an elective course.在大学里，英语是必修课而心理学是选修课。This is a elective course based on the study of the thoughts of Marx on historiography.“马克思史学思想研究”是根据作者多年精心研究而设计的一门选修课程。
你好!option 英[ˈɒpʃn] 美[ˈɑːpʃn] n. 可选择的事物; 选择; 选择权; 选择的自由; 选修课; (未来的) 买卖选择权; vt. 得到或获准进行选择; 调动球员; [例句]He's argued from the start that America and its allies are putting too much emphasis on the military option他从一开始就认为美国及其盟国过于强调军事手段。optional 英[ˈɒpʃənl] 美[ˈɑːpʃənl] adj. 可选择的; 选修的; [例句]A holiday isn't an optional extra. In this stressful, frantic world it's a must休假并非可有可无。在这个紧张而忙碌的世界，它是必不可少的。careless 英[ˈkeələs] 美[ˈkerləs] adj. 不小心的; 不仔细的; 粗心的; 粗心造成的; 疏忽引起的; 不担忧的; 无忧无虑的; [例句]I'm sorry. How careless of me对不起，我太不小心了。
核桃丫头
