Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Fun, but not helpful in real test!

I read it with great joy and fun, but the strategies the author provides cannot be that applicable to the real test because the major strategies in this book are pretty old. The code of modern CBT GRE is not that simply broken. Of course, it is true that first five (I think the first ten at least) questions are extremely important. But trust me! Do not rely only on the first five questions because ETS conders the most how many questions the test takers answer correctly. You can enjoy this book. But if you prepare GRE only with this book, I am sure that you will be greatly abashed. Math is good, but GRE math is getting complicated. For math, it would be better to review the Math section ETS freely provides through its website.