Going though the Reading Comprehension questions in this new Kaplan book I can't tell for some of the stuff if the advice they are offering is actually good advice or just the way they like to do it. For example any they ask about the "primary purpose" or "main idea" they are looking for a fairly general answer even if they have a more specific answer listed. Also there have been a bunch of questions that relied on the difference between a general "topic" and a specific "scope" where if the passage was about symbolism in Moby-**** they would say the topic is Moby-**** and the scope is the symbolism in Moby-****. I can't tell if this is actually what they want on the GRE of just what how Kaplan likes to make the questions.

edit
That's funny it's hashing half the name of a famous novel. I guess you can just call it, "The White Whale Novel."