海量图书期刊资源，随时随地畅享阅读乐趣
[ACM Press the 15th international conference - Edinburgh, Scotland (2006.05.23-2006.05.26)] Proceedings of the 15th international conference on World Wide Web - WWW '06 - Addressing the testing challenge with a web-based e-assessment system that tutors as it assessesFeng, Mingyu; Heffernan, Neil T.; Koedinger, Kenneth R. · 2006