what does clarisse ask about that might make montag "angry again"

Clarisse asks why he became a fireman.

"You're peculiar yourself, Mr. Montag. Sometimes I even forget you're a fireman. Now, may I make you angry again?"

"Go ahead."

"How did it start? How did you get into it? How did you pick your work and how did you happen to think to take the job you have? You're not like the others. I've seen a few; I know. When I talk, you look at me. When I said something about the moon, you looked at the moon, last night. The others would never do that. The others would walk off and leave me talking. Or threaten me. No one has time any more for anyone else. You're one of the few who put up with

me. That's why I think it's so strange you're a fireman, it just doesn't seem right for you, somehow."