Thank you very much for your useful information.
I am so worried about my verbal preparation. On the powerprep 1 soft, I scored 146, My exam just after 2 weeks. In the sentence completion and sentence equivalence questions, I sometimes come up with one wrong answer and 1 or 2 right answers. The reading comprehensions are too hard to understand and honestly I don't even know what my shortcomings are in case of reading comprehension questions . Any particular suggestion how to do well ?