I just got the Cliff's AP biology to supplemnt the Kaplan Bio. Is cliff's AP biology and Kaplan together enough for DAT. Has anybody used it. What you think about it? I am taking my DAT in 15 days and Biology and PAT are the only sections I need to concentrate on. In kaplan test I took today morning got 20 OC, 20 GC, 18 Biology, 18 PAT, 19 RC, 23 QR. Because I don't want to use Bio Text Book bcz it seems so long. Thanks