OAT Preparations
These sites may help you prepare for the OAT. They may also be helpful for reading (and writing) in general.
Analogies:
http://www.sadlier-oxford.com/phonics/analogies/analogiesx.htm
Synonyms:
http://www.sadlier-oxford.com/phonics/synonyms/synonyms.htm
http://www.sadlier-oxford.com/phonics/5_6/fieldtrip/fieldtrip.htm
Antonyms:
http://www.sadlier-oxford.com/phonics/antonyms/antonyms_directions.htm
Word Parts--prefix, suffix, root or base
http://www.sadlier-oxford.com/phonics/5_6/fishtanks1/fishtanks1.htm
http://www.funbrain.com/roots/index.html
Figures of Speech--similes, metaphors, etc.
http://www.gamequarium.com/figurativelanguage.html