1. This notice says that all the introductory marketing classes are closed. 这一通知说，所有的市场营销入门课程都结束了。
2. An introductory sentence for a brief summary of the passage is provided below. 下面这个介绍性句子简要总结了这篇文章。
3. Introductory exercises and in-game aides like "peekaboo", which compares top-scoring solutions with yours, help novices get up to speed. 介绍性练习和游戏中的助手，例如“peekaboo”，可将得分最高的解决方案与您的解决方案进行比较，帮助新手快速入门。
4. I assume that most students taking the introductory level class would have little or no experience with archeological research, but that's ok. 我想大多数上入门级课程的学生的考古研究经验都是很少或没有的，但没关系。
5. Students without experience can catch up after a few introductory courses, said Tom Cortina, the assistant dean at Carnegie Mellon's School of Computer Science. 卡内基梅隆大学计算机科学学院的副院长汤姆·科尔蒂纳说，没有经验的学生可以在学完几门入门课程后赶上。
