You can do whatever makes you more comfortable, but ike is right on in his assessment. I just wanted to add that if you're looking to tricks like this to improve your score, your head is in entirely the wrong place.
... cannot devote time to an assessment of passage difficulty and subsequently ... passages. Nor can a cursory assessment of subject matter tell you ...
I didn't consider the flight situation. You could decide based on your next few PT scores, maybe you should consider taking some of the newer/newest tests to make sure you're getting an accurate assessment of where you stand.
@Matt1234567 Except I'm an English major and a biochemical Engineer may have a harder time getting an A than me -- whereas we both have an equal (somewhat) metric if taking the same assessment.