“叮铃铃、叮铃铃。”上课的铃声的响了,俞老师走进了教室,开始上课了。俞老师一手拿着本语文书,一手拿着粉笔正认真地讲着课。她是一位四十几岁的中年人,鼻梁上架着一副眼镜。光是看她厚厚的镜片,你就可以知道她的知识有多丰富,所以她总是不断地说啊说啊,似乎想一节课把她肚子 “Jingle bell, jingle bell. ” The bell rang, Yu teacher entered the classroom, began class. Yu teacher holding the language book in one hand, one hand holding chalk is serious about class. She is a middle-aged man in her forties with a pair of glasses on her nose. Just look at her thick lenses, you can know how rich her knowledge, so she always said ah ah, it seems like a class to her belly