【单选题】One tool that is useful during both analysis and design is the ______,which is a pictorial representation of the items of infonnation(entities)within the system and the relationships between these pie...
【简答题】英译汉下列词组: a udiovisual communication, AECT, pictorial and nonrepresentational messages, educational environment, development of the learners's full potential, systematic way, human and non-human resour...