When I am taking my practice tests I often come across questions (in LR sections, specifically) where I am certain that 3 of the answers are wrong, but am unable to clearly distinguish between the other two. For time's sake I usually put the answer that seems best and move on. Somehow, at a percentage that seems mathematically impossible for a 50/50 scenario, I miss almost every one of these questions. Is there any tricks, or specific things to look for in order determine the better of two decent answers?