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  3. Google already has a window into our souls through our Internet searches and it now has insight into our ailing bodies too. The

Google already has a window into our souls through our Internet searches and it now has insight into our ailing bodies too. The

admin2018-04-27  67
问题     Google already has a window into our souls through our Internet searches and it now has insight into our ailing bodies too. The Internet giant is using its vast database of individual search terms to 【B1】______ the e-mergence of flu up to two weeks 【B2】______ government epidemiologists. Google Flu Trends uses the 【B3】______ of people to seek online help for their health problems. By tracking 【B4】______ for terms such as "cough", "fever" and "aches and pains", it claims to be able to 【B5】______ estimate where flu is【B6】______.
    Google tested the idea in nine regions of the US and found it could accurately predict flu 【B7】______ between 7 and 14 days earlier than the federal centres for disease control and prevention. Google hopes the idea could also be used to help 【B8】______ other diseases. Flu Trends is limited 【B9】______ the US. Jeremy Ginsberg and Matt Mohebb, two software engineers【B10】______in the project, said that【B11】______in Google search queries can be very【B12】______. In a blog post on the project they wrote: "It turns【B13】______that traditional flu surveillance systems take 1 to 2 weeks to collect and【B14】______surveillance data but Google search queries can be【B15】______counted very quickly. By making our estimates【B16】______each day,Flu Trends may provide an early-warning system for outbreaks of influenza." They explained that【B17】______information health would be kept【B18】______. "Flu Trends can never be used to identify individual users【B19】______we rely on anonymised, aggregated counts of how often certain search queries【B20】______each week."
【B2】
选项 A、with
B、after
C、before
D、during
答案C
解析 根据文章第二段第一句中it could accurately predict flu between 7 and 14 days earlier than the federal centres for disease control andprevention可知，研究者发现它可以准确地预测流感的发生，比疾病控制预防中心发布的流感信息还要早7～14天，此处根据同义词复现原则，earlier对应before．因此C．before正确。其他选项均不符合题意。
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