根据文章内容，选择最佳答案。

     Brian is a school boy. He's twelve. He lives in Shanghai now. He is from England. He studies in a

junior middle school. He gets up at half past six every day. He has breakfast at seven. After that, he

goes to school with his friends. They have four classes in the morning and two in the afternoon. In the

evening he does his homework at home, but he often watches TV on Saturday evening. Brain likes

drawing. He joins an art club. He likes reading story books. Now he is reading an English book in

his room.

1. Brain is a _____.

A. student

B. girl

C. teacher

2. Brain gets up  

A. at seven

B. early

C. at six

3. Brain does his homework

A. every evening

B. at school

C. at home

4. Brain likes ______.

A. English and Chinese        

B. playing football    

C. drawing and reading

5. Brain has ______ classes at school every day.

A. four  

B. six    

C. five

简述涡流检测时，标准试件的用途及制作注意事项。