by listening while reading in your mind, for instance: audiobooks, close captioned movies (video with good subtitles, as sometimes the subtitles follow the script, and not actually what the actor says)

Well, first this sentence has some grammatical problem and I don't know what you want to express. Reading comprehension or oral ability? How to improve your reading comprehension / oral ability? Second, whatever you want to improve, you need to practice. If it is oral ability, you had better try to speak and express English as much as possible; If it is your reading ability, then you need to read a lot. That's all.