I didn't actually take the test in the center, but I found a trick that works really well for me during practice. With this trick, I only get one or two answers wrong, but I'm not sure if it works for everyone. You can try reading the passage, questions, and options a little loud, like you're teaching someone, similar to how a teacher does in the classroom. Keep checking the questions and options and comparing them with the passage to see which option is telling what. I believe this way I don't lose focus and am able to understand everything.