同学们,你们参观过饼干工厂吗?当你看到只有一元硬币那么大的生面片,送到烘烤炉里转一圈,体积就增大了好几倍,变得又松又脆,会不会觉得很好玩呢?掰开一片饼干,我们可以看到里面布满了蜂窝状的小洞洞。面包和馒头里面同样也布满了小洞洞。油条呢,在油炸之前像一 Classmates, did you visit the biscuit factory? When you saw a dough piece that was as big as a dollar coin, it went round in the baking oven, its volume increased several times, and became loose and brittle. Do not think it is fun? Break apart a piece of biscuits, we can see inside covered with a small honeycomb hole. Bread and bread inside also covered with small holes. Fritters, like a before frying