10 我们可以在蓝图里通过play Animation播放控件动画！

中国大学MOOC: Deregulation is the process of removing legal restrictions to the free play of markets, the establishment of state owned enterprises, and the manner in which state owned enterprises operate.

4. What can we infer from the passage? A: The state should provide protection for all the old people. B: The state has to create a suitable framework to restrict the private pensions. C: The state should protect those who can’t support themselves. D: The state will play a secondary role in pensions due to more private pensions.

Pocket Animation是指（）。

播放器页面结构中，可以通过animation-play-state控制动画的播放状态。

I’d rather ______ the piano than ______ the violin. A: play; playing B: to play; playing C: play; play D: to play; play

6. contact A: the state of talking or speaking B: the state of acting C: the state of communicating or meeting D: the state of laughing

苹果浏览器和谷歌浏览器如何实现的animation动画效果（ ）。 A: -moz-animation B: -webkit-animation C: -o-animation D: -animation

css3中使用什么关键字来定义动画的名称(规则)() A: @keyframes B: @animation C: @media D: animation

Why does the existence of intermediate state in the 4-level laser can promote the production of laser beam? A: reach population inversion between ground state and metastable state B: reach population inversion between ground state and intermediate state C: reach population inversion between ground state and pumped state D: reach population inversion between intermediate state and metastable state