Hi jjkk,
From your post, I assume that you're talking about wanting to read the EXPLANATION for each GMAT question immediately after working through the question (when referring to the "answers", it wasn't immediately clear whether you were talking about the 5 answer choices that accompany each question or the explanation for the correct answer).
The 5 answer choices to each question can sometimes provide really important information about the question (including a hint as to how you can solve the question or what you might want to focus on as you read and take notes), so you should NOT 'cover up the 5 answers' ever.
Unless you're working through a quiz or a CAT, then reading the explanation after working through each individual question makes a certain degree of sense - you want to make sure that you got the question correct (and learn if there were any other ways to answer the question or if there were any noteworthy elements that you should memorize so that you can spot them again in other questions).
1) How long have you studied?
2) What materials have you used?
3) How have you scored on each of your CATs (including the Quant and Verbal Scaled Scores)?
4) What is your goal score?
5) When are you planning to take the GMAT?
GMAT assassins aren't born, they're made,
Rich