By making learning _______ anytime and anywhere, distance education is a powerful tool for supporting lifelong learning.

A、possible
B、possibly
C、impossible
出自:国家开放大学网络实用技术基础

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块