波纹编辑工具（Ripple Edit Tool） 快捷键

The heavy rain has made a real ________ of the garden. A: mess B: mass C: mixture D: ripple

中国大学MOOC: 无纹波(ripple-free)最少拍控制器设计时，W(z)的零点表达式中应包含G(z) 。

You can travel _____, but children under five travel ____. A: freely … free B: free … freely C: free … free D: freely … freely

In a “first-best” world：（ ） A: Free trade is not optimal. B: Free trade is economically efficient. C: Free trade benefits everyone. D: Free trade harms everyone.

In some countries, newspapers _____ government control, and different political views can be seen in them. A: feel free from B: feel free to C: are free from D: are free to

If that time does not fit into your schedule, please to suggest a day that is more convenient to you. A: feeling free B: to feel free C: feels free D: feel free

中国大学MOOC: XRP是Ripple网络的原生货币，下列哪一项不是它的特点？

When a morpheme is free to occur as an individual word, it is a free morpheme.

The internship provides all of the following EXCEPT（） A: a small stipend B: free room C: free trip D: free meals