M-W Elementary Dictionary(韦氏基础字典)

　　Comprehensive coverage:32,000 entries help students find the definitions,spellings, and pronunciations they need to interact with the world around them.
User friendly:600 illustrations clarify meanings and expand understanding.
Essential information:Special sections increase knowledge of abbreviations,signs and symbols, United States presidents, and nations and capitals of the world.

Preface
Key to Using Your Dictionary
Using Your Dictionary
Abbreviations Used in This Dictionary
Pronunciation Symbols
A Dictionary of the English Language
Abbreviations
Signs and Symbols
Presidents of the U.S.A.
Vice Presidents of the U.S.A.
Geographical Names