As Chun (20010 demonstrated,reading and vocabulary learning in web-based environment can be facilitated by a program-internal glossary,an online bilingual dictionary and an audio narration of the text.An important feature exploited by Chun in the research was tracking the use of online multimedia support resources to provide more individualised study support.In the mobile-assisted learning context,analysing learner access logs to the vocabulary activities led to the formulation of a personal learner profile in terms of the vocabulary that they had difficulty with,so that these items could be presented to the learners more frequently than items that were less likely to cause learners problems(Stockwell,2007)