题目

下列各式中不是整式的是（ ）． A . 3a B . C . D . 0 答案：B根据短文内容和首字母填空。Mrs Jones was a t【1】. Her house was not far from her school, and she often walked there in the morning. All the students in the school were very y【2】.One cold and w【3】 morning in October, Mrs Jones walked to school. The cold wind went into her eyes and big tears started to run o【4】 of them. She got to the school, o【5】 the door and went into the classroom.It was w【6】 in the classroom and Mrs Jones was happy. But then a small boy looked at her f【7】 some time, put his a【8】 round her and said, “Don’t cry, Mrs Jones. School isn’t very bad.”