When faced with things that are too big to sense, we comprehend them by   (                       ). The first appearance of a shining star in a darkening evening sky can take you out into the universe if you combine what you see with the twin facts that the star is merely one of the closest of the galaxy’s 200 billion stars and that its light began traveling decades ago. The smell of gasoline going into a car’s tank during a refueling stop, when combined with the fact that each day nearly a billion gallons of crude oil are refined and used in the United States, can allow our imagination to spread outward into the vast global network of energy trade and politics. [3점]

① establishing the local network 

② understanding the energy policy of a nation 

③ comparing the universe with human beings 

④ associating the objects with their names 

⑤ adding knowledge to the experience