One thing I've always heard, and sorta realized after taking the NREMT exam myself, is that you can't "read into" the questions too much. Just take them for face value. But read carefully, it's easy to miss a word that gives away the answer for you...like "unresponsive." That's the word I was basically skipping over as I read, causing me to spend an extra 5 minutes on one question. Once I noticed it, I magically had the answer. It's usually stuff you'd do automatically and subconsciously in the field (e.g. unresponsive hypoglycemic diabetic = don't oral glucose), but can easily mix up on paper accidentally.
As for the practicals, remember that your partner can just as easily cause you to fail a station as you can. If they did something wrong in real life, you'd surely correct them, so make sure you do it on the test also...they'll thank you for it, even if they are pissed that you told them they were wrong. Heck, that's partly why we have partners in this line of work, to make sure all the bases get covered.
Good luck, study hard.
--Marc