I think it might be me :D. I found a workbook by FlashKids that is titled "Reading fo the Gifted Student - Challenging Activities for the Advanced Learner". It was inexpensive - $8.95 and I found mine at Barnes and Noble.
It is a simple format - one page selections and then a variety of questions to answer/discuss. DS enjoys it as the selections are always quite informative and varied. We have read about Ben and Jerry's Ice Cream, Eleanor Roosevelt, Mad Cow Disease, and Coast Guard Dogs. Always something new.
Hope that helps.
(Oh, DS reads on an 8th grade level for pleasure reading. I dropped him to the 5th grade level for this book as he needed exposure to drawing conclusions, fact/opinion, etc. Basically, the things that our children miss because they accelerate soooo fast.)