You definitely are killing those science sections, my brother.
I do all of the things I mentioned in my post while I am reading the passage. Occasionally I will write down little one or two word clues to remind myself if I'm feeling foggy. I try not to focus too much on detail while I'm reading because the majority of questions are not going to be nitpicky detail questions, many of them are about the main theme of the article and understanding the author's point of view.
I try to pick apart a verbal passage the way I pick apart a scientific article. Be CRITICAL. Just because they are writing it doesn't mean they know what the hell they're talking about lol. Look for clues as to the background the person has.
For instance, if it is an art passage then while you're reading it there should be clues to indicate whether the author is a fellow artist, an art historian, an art critic, simply a layman, or any other person who may be interested in the field. From those clues in the passage I try to form an opinion of the author and his/her intentions. Say the person is an art critic, then I am looking to see if they are pro or con the artist's work and then use that to answer some of the questions. I guess it's kind of hard to explain, but you just gotta get a feel for the author rather than relying on the passage to lay out the answer. A lot of times they will put in little BS answers that resemble something that was said in the passage, but is simply not true. Often 4 or 5 of the questions in a passage are directly related to the theme so as long as you can have a clear and concise understanding of the central theme and thesis of the passage then you can take educated guesses on the questions.
The other thing I always do is to pace myself well and not return to the passage unless absolutely necessary. If it is a question where they are asking what a word means in a particular sentence or referencing a specific person or place in the passage I will go back.
I also use the highlight function to highlight a sentence I think is representative of teh whole passage's theme and also to highlight all proper nouns (people, places, etc.) because those are sometimes referenced in questions and I want to be able to find them quickly.
Hope this is helping some haha