【高中·完形填空·The Value of Silence】
阅读下面短文，从各题所给的四个选项中选出可以填入空白处的最佳选项。

We live in a world that is afraid of quiet. The moment we are alone, we reach for a screen. Music, videos, messages — anything to fill the empty minutes.
Yet almost every great idea in history was born in silence. Newton sat under a tree; Darwin walked alone for hours; Beethoven stopped hearing the world and heard something ______.
Silence is not the absence of thought. It is the condition in which thought becomes possible. When we never stop the noise, we never begin to think.
This is why walking without headphones feels strange at first, and why, after twenty minutes, it feels like coming back to a room you have not visited for years.

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