Consolidate evaluate found achievement to perfect document retrieval course to build
1 information age gifts 21 centuries enter the development opportunity with document retrieval new tax intellectual economy times, in intellectual economy society, knowledge and information will make the most fundamental goods in world economy, the speed of innovation knowledge and the capacity that use information will decide a country the position in market of 21 centuries whole world [1] . Information ability will become the main factor that evaluates a talented person. People should seek to live on in informatization society put, seek progress, score the success of the career, always must pay close attention to information.