内容简介：
Engage beginning readers with the high-powered mechanics of Earth Movers. Through introductory vocabulary, rich photography, and book and Web resources, readers will learn about industrial vehicles at work in the city and on the farm. A table of contents and an index provide young readers with an easy-to-follow format and an introduction to the structure of nonfiction books. Earth Movers will foster the emerging reader's fascination with the real-life versions of their favorite toys and with the world of reading that awaits them.