I start off by reading the entire passage. I read every word of it, and if I don't understand something, I keep on going until I realize I'm lost, then I quickly go back to that sentence, reread it and skim quickly through the stuff after it that I read. I take don't pause or take breaks to reflect on what I read because I don't have time to do so. I'm a slow reader and reading a passage takes me 4 to 5 mins depending on the length and complexity of the content.
Once I'm done reading, I jump to the questions. I tend to read the questions at a slower pace to avoid skipping key words such as "NOT". Then, I quickly try to answer the question from memory before reading the options. I utilize the "cross-off" function for every question. Whenever I'm confronted with a question that ask about something specific in the passage, and I happen to know where to look, I quickly glance over the passage and look for the answer. Otherwise, I go with my gut. If I'm confronted with a question that I don't understand or having trouble connecting the dots, I eliminate options that seem too focused or too good to be true, and go with the more general option.
The above method has served me well so far in answering questions for passages that I understood the main idea. However, for passages like the first one on AAMC 9 that has to do with women and writing, I realize after finishing the passage, or even while I'm two-third way in that I'm lost and it's too late to turn back. Therefore, I continue with my reading in hope that I may read a clue that could answer a specific question. However, I still acknowledge to myself that "I'm gonna bomb this stupid passage". In answering the questions, I quickly read through, since slow reading most likely is not going to help, and answer questions by eliminating "extreme" answers and going with I feel comfortable with. So far, this method has done more damage than good because I tend to get one answer out of 6 right. Statistically, blind guessing would serve me better. However, I still haven't found an alternative remedy to answering questions for passages that I don't understand.