Instruct: Classify an Amazon review as either positive or negative.
Query: Waste of time and money

I bought this book thinking that there would be explanations for each question. This book is a complete joke. Only about a third of the questions have any sort of explanation at all. Many of the rest just give reference page numbers to other texts. A lot, however, just give credit for a slide and not even a reference. The minority that have any sort of explanation are very weak. This book does present questions comparable to the real exam, but if you want to know why an answer is right or wrong, I strongly suggest the Psarros/Moore review book instead.