<p>I ask this because I just took the science test for practice test #7, and I thought I did really well on it. When I checked my answers I suprisingly got 12 wrong. After further analysis and reading the explanations I am convinced that the book screwed up and there are 4 questions that I got "wrong", but I am almost positive I got right. So, does anyone else have this book, so they can confirm/deny this? If you have the book the problems in question are number 6, 14, 18, and 19.</p>