名师精讲大学英语四级完型填空解析讲义24

　　Directions: There are 20 blanks in the following passage. For each blank there are four choices marked , , and on the right side of the paper. You should choose the ONE that best fits into the passage. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre.

　　注意：此部分试题请在答题卡2上作答。

　　Google already has a window into our souls through our Intemet searches and it now has insight into our ailing bodies too. The lnternet giant is using its vast database of individual search terms to 67 the emergence of flu up to two weeks 68 government epidemiologists. Google Flu Trends uses the 69_ of people to seek online help for their health problems. By tracking 70 for terms such as cough , fever and aches and pains , it claims to be able to 71 estimate where fluis 72.

　　Google tested the idea in nine regions of the US and found I could accurately predict flu 73 between 7 and 14 days earlier thin the federal centres for disease control and prevention. Google hopes the idea could also be used to help 74 other diseases. Flu Trends is limited 75 the US. Jeremy Ginsberg and Matt Mohebb.

　　two software engineers 76 in the project, said that 77 in Google search queries can be very 78 . In a blogpost on the project they wrote: It turns 79 that traditional flu surveillance systems take 1 to 2 weeks to collect and 80 surveillance data but

　　Google search queries can be 81 counted very quickly. By making our estimates 82 each day, Flu Trends may provide an early-warning system for outbreaks of influenza. They explained that 83 information health would be kept 84 . Flu Trends can never be used to identify individual users 85 we rely on anonymised, aggregated counts of how of ten certain search queries 86 each week.

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　　75.

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　　77.

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　　78.

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　　79.

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　　80.

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　　81.

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　　82.

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