[3월 학평] 기출변형_내신대비_고1_30번

30번. At that price, you would notice the cost and would think twice before using artificial light to read a book.

When the price of something fundamental drops greatly, the whole world can change. Consider light.

Chances are you are reading this sentence under some kind of artificial light. Moreover, you probably never thought about whether using artificial light for reading was worth it. ①Light is so cheap that you use it without thinking. ②But in the early 1800s, it would have cost you four hundred times what you are paying now for the same amount of light. ③The drop in the price o..........