Hi Jimmy,
Since the GMAT is a consistent, predictable Exam, if you've practiced correctly, then everything that you see on Test Day SHOULD remind you of something that you've already worked on. While the prompts won't be exact 'matches' for questions that you've already answered, the 'pieces'/patterns/etc. will be.
When reading any prompt (Quant or Verbal), part of your job is to look for words/phrases/concepts that you know already. For example, In the Quant section, it could be a reference to a Formula, a Number Property or a clue to use a Tactic. In the Verbal section, it could be a grammar 'split' or a logical 'construct' (such as causality). The little details will vary from prompt to prompt, but the overall concepts don't change.
It often helps to be an active note-taker. You'd be amazed how quickly you will spot patterns when you just go about organizing the information that you've been given. So don't stare at the screen, and do NOT do work in your head - put the pen on the pad and get to work.
1) What is your goal score?
2) When are you planning to take the GMAT?
GMAT assassins aren't born, they're made,
Rich