I found a couple of interest inventories that might get children talking about what they like and dislike on this page:

http://school.discoveryeducation.com/schrockguide/edres.html

You could simply add additional questions about what they like to read. Since most first graders are not yet fluent readers, you might also ask what stories they have enjoyed having parents or teachers read aloud.

Cheers,

Bruce

(you might want to have a control question, just to see if the first grader can actually read, or if they need to have the survey read to them)

2) What is your favorite book?

(this is a good beginning question because it gives insight into their reading level)

3) Who reads with you?/ Who reads to you?

(this will explain whether they read with an older sibling, parent, friend, or teacher which would help explain what interests them in reading)

4) Is reading fun?

(although this is a very basic question, it tells you about whether they are interested in the survery)

Best of luck to you!

–Emilee