From humble beginnings in a garage in Menlo Park, California in 1998, Google has grown into a multinational company carrying out

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问题     From humble beginnings in a garage in Menlo Park, California in 1998, Google has grown into a multinational company carrying out over one billion Internet searches every day.
    Google’s most famous product is Google Search. Searching Google【C1】______relevant sources is now as standard a procedure for historians as【C2】______for library catalogues. But it does have【C3】______: online databases and non-textual information, such as pictures, cannot always be【C4】______by Google or other search engines. Such sites have to be searched【C5】______, which is dependent on knowing they exist.
    Google Search is not the only tool that Google offers to historians. Google Maps and a(n)【C6】______tool called Google Earth together provide high-resolution (高分辨率) satellite images, street maps and terrain【C7】______for many areas of the world. Google Maps can be used to【C8】______down the exact location of where something happened, or to give a new perspective on old interpretations:【C9】______the position of First World War trenches, for example, or mapping the journey of Marco Polo.
    Google also provides tools that【C10】______historians to work together. Google Scholar allows historians to find work that is【C11】______to their own, whether produced by fellow historians or【C12】______from different disciplines.
    For historians looking to collaborate, Google Docs allows documents to be accessed and edited by multiple users【C13】______: historians in different universities researching the same topic can write up【C14】______articles on their findings. Google Wave and Google Buzz are two new messaging and social up【C15】______tools that enable real-time conversations online.
    Google is also【C16】______a significant role in producing digital versions of sources that would otherwise be【C17】______to archives and museums. Google Books is a project, carried out in【C18】______with a range of universities and libraries, to digitize millions of their books and make them【C19】______on the web. As a result, historians can search for key words or phrases in over 10 million books, from the earliest【C20】______texts to the present day.
【C4】

选项 A、dispatched
B、elaborated
C、searched
D、excluded

答案C

解析 动词辨析题。本句说明谷歌搜索引擎也有局限:网上数据库和一些非文本类信息用谷歌或其他搜索引擎的局限是不一定那么方便。同时根据下一句中的解释have to be searched也可以确定答案为C)searched“搜寻”。A)dispatched“派遣”;B)elaborated“详述”;D)excluded“排除”。
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