A.given
B.showed
C.sent
D.composed
A.They can access course materials easily.
B.They are unmotivated to learn.
C.They can learn at their own pace.
D.They rarely fulfil the course requirements.
A.使用手机边听网课边充电
B.躺在床上使用平板看网课
C.每天网课结束后及时关掉电脑并拔掉电源
D.网课期间每天坚持眺望远方,坚持做眼保健操