While you trust to the dog,the wolf slips into the sheepfold.
当你认为狗可信,狼已偷偷把羊圈进。
Next, if it is not a story, get an idea of the organization of the book. Read the back cover and the introduction. Look at the pictures and the short texts below them. Turn to the front of the book and look at the contents. This way you can decide whether