A physics Examination

Once in a physics examination, Nick finished the first question very soon, while his classmates were thinking it hard.
The question was: When it thunders why do we see the lighting first, then hear the thunderrolls?
Nick's answer: Because our eyes are before ears.

一次物理考試

　　在一次物理考試時，當同學們都還在苦思冥想時，尼克很快就答好了第一個問題。
　　這個問題是：為什麼在打雷時，我們總是先看到閃電後聽到雷聲？
　　尼克的回答是：因為眼睛在前，耳朵在後。