人格尊严不可辱。人格尊严权具体表现为（   ）
①名誉权 ②肖像权 ③姓名权 ④选举权

根据短文内容判断下列句子正误。

    Look! It's my school dining hall．We are here for lunch every day．Before，there were many tall trees．Ten years ago，there was only a small house in my school．There was no library or computer．The playground was also small．

    Now，my school is very beautiful．The playground is big．The grass is green．We have PE and play sports on it．There is a nice teaching building in my school．It has six floors．The computer rooms are on the fourth floor and the library is on the sixth floor．We read books in the library and use the Internet in the computer rooms．

在式子：x+5，mn，x=1，0，π，3（x﹣y），$\frac{n\mathrm{\pi }{\mathrm{r}}^2}{180}$，a＞﹣2中是代数式的有（　　）