a perfect score的用法和样例：
- He had a perfect score on the mathematics exam.
- Mary made a perfect score on her test.
- Must choose carefully, we can not ignore even a ornaments, and map tips pretend to be caused, A perfect score is!
- You'll find a few herrings very difficult to get if you're going for a perfect score!
- Just because I got a perfect score on my thesis does not necessarily mean that I was cut out to do work in Chinese phonetics.