Cambridge International AS and A Level Computer Science Teacher's Resource CD-ROM

The PDF files for answers to questions in the Coursebook as well as the Revision-Guide is formatted very poorly. It doesn't list items as bulleted points or numbered but everything is lumped into one long line which is hard to follow the explanation. Anyway, if you're intending to buy this CD, then you're already being duped just like me in buying both the Coursebook & Revision-Guide only to find out that the answers to questions from both books are not provided. The answers are in this CD which is more expensive than the Coursebook itself. I feel ripped of. Now I have bought 3 of them:a) Coursebookb) Revision-Guidec) Teachers' Resource's CD (this item)The answers to questions in a) and b) should have been provided in those books (like a CD or in pages at end of those corresponding books) but No. The answers is sell separately in c) which is more expensive than both the combined prices for a) and b).I bought "Cambridge International AS and A Level Physics" by David Sang, et al last year. Excellent book, with lots of end of chapter exercises where the answers are provided in a CD that come with the book. I'm sure that David Sang & co-authors could separate the CD answers & sell it as a different item, but they chose not to, which is good for users to double check their work with the answers provided in the CD.