书面表达。

     根据问题提示写一篇短文，题目是：My Good Friend

1. What's his name?                

2. Where is he from?  

3. When and where was he born?    

4. When did he start going to school?  

5. Who is his favorite athlete?

根据《建筑设计防火规范》的规定，闷顶内采用锯末等可燃材料作保温层的（）耐火等级建筑的屋顶，不应采用冷摊瓦。

A、一级

B、二级

C、三级

D、四级