nothing anyone can do to help you sorry, all we can do is give advice. You just have to read the question and the text more carefully, start out using as much time as you need until you get the hang of it. Then after that slowly improve your speed and learn to skim the text.
If you're getting the same results timed and untimed, take longer to read through everything clearly so you understand why you're getting the wrong answers, its not impossible, its just a matter of understanding what they are asking and finding the information