In relation to the Singapore legal system and statutory interpretation, explain each of the following rules:

(c) the golden rule; (3 marks)

将装满氧气的集气瓶如图方式放置（固定装置略去），并将燃着的木条伸到瓶底，发现木条复燃，且在甲瓶中燃烧比在乙瓶中剧烈．由此可说明氧气具有的性质是：

①______；

②______．