Read by the light of fireflies(萤火虫)or snow
导读：同学们,上一个单元我们读的故事叫《凿壁偷光》,它讲的是汉朝的匡衡克服困难、努力读书的事迹。《三字经》里有“如囊萤,如映雪”,这讲的是晋朝的车胤和孙康刻苦读书的故事。让我们读一读吧。
Story one
In the Jin Dynasty, there is a man named Che Yin. He loves learning. His family is poor, so he can't buy an oil lamp. One summer night, he sees many fireflies lighting up the sky(照亮天空). He has a good idea.

He catches as many fireflies as he can, puts them into a thin(薄的)bag, and hangs it up(挂起它). It is not as bright as a lamp, but the light is enough for Che Yin to read at night. Later Che Yin becomes a scholar(学者).
Story two
In the Jin Dynasty, Sun Kang can't read at night either. He thinks it is a pity to waste(浪费)time at night. One day, it is snowing hard outside. In the middle of the night, he sees a light come through the window. It is light from the snow. He gets up and begins to read books outside.

He finally becomes a well-learned man.
我来试试
根据故事内容回答问题。
1. Why do Che Yin and Sun Kang read by the light of fireflies or snow? ______
2. 由这两个故事而来的成语是什么？______

1. Because their families are poor and they can't buy oil lamps, but they love learning and don't want to waste time at night.
2. 囊萤映雪