Let's-Read-and-Find-Out Science: Why Frogs Are Wet 自然科学启蒙为什么青蛙湿漉漉的（动物）

This series of books gradually introduces basic concepts of natural science to kids through vivid pictures and simple language and satisfy kids needs to understand teh scientific world. Many of the books contain simple activities for children to do. It mainly tells about the habits of various frogs. Frogs can jump thirty times their own body length, catch small bugs in flight, breathe underwater or on land...but they must keep their skin wet no matter what.