A Massive Open Online Course (MOOC) is an online course aimed at unlimited participation and open access via the web.
___47____traditional course materials such as videos, readings, and problem sets, MOOCs provide interactive user forums that help
build a community for students, professors, and teaching assistants (TAs). MOOCs are a recent development in distance education
which ___48___ to emerge in 2012. ___49___ early MOOCs often emphasized open access features, such as connectivism and
open licensing of content, structure, and learning goals, to promote the reuse and remixing of resources, some notable newer MOOCs
use closed licenses for their course materials, while maintaining free access for students.
【題組】48. (A) began (B) beginning (C) has begun (D) was beginning
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