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  3. When people search online, they leave a trail that remains stored on the central computers of firms such as Google, Yahoo and Mi

When people search online, they leave a trail that remains stored on the central computers of firms such as Google, Yahoo and Mi

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问题 When people search online, they leave a trail that remains stored on the central computers of firms such as Google, Yahoo and Microsoft. Analyzing what we’re looking for on the Web can offer a remarkable  (41)   into our anxieties and enthusiasms.
    UK writer and Internet expert John Battelle wrote on his blog, "This can tell us  (42)   things about who we are and what we want as a  (43)  ." Google’s experimental service Google Trends, for example, compares the numbers of people searching for different words and phrases from 2004 to the present. According to these graphs, sometimes people’s interests are obviously  (44)   the news agenda: when the Spice Girls announce a reunion, there’s an immediate  (45)   to find out more about them. Other results are strikingly seasonal: people go shopping online for coats in winter and short pants in summer.
    The most fascinating possibility is that search data might help  (46)   people’s behavior. When we search online for a certain brand of stereo system, we are surely indicating we’re more  (47)   to buy that brand.
    Perhaps we search for a political candidate’s name when we are thinking about  (48)   him or her. Maybe we even search for "stock market crash" or "recession" just before we start  (49)   our investments. This information could clearly be useful to a smart marketer--it’s already how Google decides which  (50)   to show on its search results pages--or to a political campaign manager.
选项 A、reduced to
B、resulting in
C、backed up by
D、driven by
答案D
解析 reduced to归纳为，使处于；resulting in导致；backed up by由……支持；driven by受……驱使
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