Unit5DataGathering&&.:AnExample‘Google’搜索入门初阶搜索:结合律(+)排除律(-)或律(OR)混合律用“+”和“-”减少冗余信息辅助搜索:关键字的字母大小写搜索整个句子(“”)强制搜索(+)高级搜索:对搜索的网站进行限制(site:)查询某一类文件(往往带有同一扩展名) “filetype:”搜索的关键字包含在URL链接中(allinurl:)搜索的关键字包含在网页标题中(allintitle:)--,,youmustevaluateit---identifytheuseful,thenotsouseful,---,wemeananyitem(foundinalibraryornot),areferencecanbeabook,journal,magazine,painting,statue,taperecording,encyclopedia,dictionary,,-taking,pletereferencewillbecritical,.,youmustputdownthenameoftheauthor,thetitleofthereference,thejournalorpublishinghouse,thevolumenumberorcopyrightyear,,,,esstoCD-ROMpublications,whichisanup-to-d
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