一天,爸爸拿来一块长方形的玻璃让我压在书桌上。当我小心翼翼地把玻璃放在桌面上时,发现玻璃太宽了,要切掉5厘米,怎么办呢?家里没有玻璃刀,怎样才能把玻璃整齐地切开呢?我左思右想,突然想起自然课上老师讲的物体具有热胀冷缩的性能。啊,我有办法了!我准备了一根线,一瓶汽油和 One day, my father took a rectangular glass and put me on the desk. When I carefully put the glass on the table and found that the glass is too wide, to cut off 5 cm, how to do? There is no glass knife at home, how can the glass neatly cut it? I thought to myself, suddenly remembered Natural class teacher talk about the object with thermal expansion and contraction performance. Ah, I have a solution! I have prepared a line, a bottle of gasoline and