My second is performed by my first ,And, it is thought,A thief by the marks of my whole,Might be caught.

What has teeth And can't bite?

Which is faster,heat or cold?

What has teeth but can't eat?

Long legs, Short thighs, Bald head And bullet eyes.

Eight were standing, Two were cracking, Two were looking.

字母C,谐音就是“sea”大海，有很多水.

What never asks questions but always gets answers?

What word of only three syllables contains twenty-six letters?

What is it that passes in front of the sun yet casts no shadow?