if you are a slow reader like, i suggest you to go straight to the questions. Answer all the straightforward fact/detail questions while skipping the tone/inference questions. By the time you answered those questions, you will be able to answer the tone/inference questions. If you still can't get it, just go to the relevant paragraph and figure them out. If you still can't, just skip and move on. With this method I was able to get over 20. I hope it helps.