【多选题】计算机辅助教育(CBE:Computer Based Education)技术,主要包括( )等。
【单选题】The lion the fox the ass indicates that ____________
A.
Never trust a friend who deserts you at a pinch.
B.
Betray a friend and you' ll often find you have ruined yourself.
C.
Wealth unused might as well not exist.
D.
Greed often overreaches itself.
【简答题】学习交互平台和()的应用对课程学习具有良好的辅助作用。
【单选题】由一个已知控制点出发,最后仍回到这一点的导线,称为()。
【判断题】旋转线段时,需要单击线段的一个端点,选中这条线段和另一个端点,然后旋转。