氧气是一种化学性质比较活泼的气体，它可以和许多物质发生化学反应。如图所示是碳粉、红磷、光亮的细铁丝在氧气中燃烧的实验装置：

重庆市中小学“科技之星”创新大赛活动拉开序幕。

请回答以下问题：

    We are warned not to waste time because time 1 will never return. I think it quite 2. What does time look 3? Nobody knows, and we can't see it or touch it and no 4 of money can buy it. Time is abstract(抽象的), so we have to 5 about it.

    Time passes very quickly. Some students say they don't have 6 time to review their lessons. It is 7 they don't know how to make use of their time. They waste it in going to theatres or playing, and 8 other useless things. Why do we study every day? Why do we work? Why do most people 9 take buses instead of walking? The answer is very 10. We wish to save time because time is 11.

    Today we are living in the 21^st century. We 12 time as life. When a person dies, his life ends. Since life is short, we must 13 our time and energy to our study so that we 14 be able to work and live well in the future. Laziness is the 15 of time, for it not only brings us 16, but also does other 17 to us. If it is necessary for us to do our work today, 18 us do it today and not 19 it until tomorrow. Remember that time is much more 20.

这里，两株作物“相近”是指它们之间的直线距离不超过1米．

2010年7月一位老者动情地写下了这样一首诗：“一声惊雷震九天，南湖八十九年前。唤起工农千百万，同心干，红旗漫卷映河山。”这首诗赞颂的历史事件是（  ）