Leon-
I think there's no better thing than to practice, practice, practice reading verbal passages and answering questions.
MAKE SURE you can read, comprehend, and answer all the questions within the alloted period of time.
I'd say if you can do that, you'll guarantee yourself at least an 8. (So many people just end up having to guess the last few questions, or even passages)
Learn how to quickly find the info the question is asking for and you've got a 10+.