高三英语限时练习十一
完形填空(时间:10分钟)
Ero Carrera is watching the computer screen in a lab in California as he tracks a new computer virus slowly circling the globe, targeting cell phones. Working from the US office of the Finnish computer
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firm, Carrera knows this virus could be the start of something big and
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. He’s one of a couple of hundred “virus hunters” worldwide who guard computers and cell phones from
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. That’s the job for these unlikely action heroes of the Internet age, where quick and curious minds are more important than strong
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.
Carrera works with Tzvetan Chaliavski to form the two-man team in California. Like that of other employees in the anti-virus companies in the world, their work is at the battle front of providing
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from the damaging of computer virus, worms and Trojans. They break down software to discover a new virus and crack its code. Then they
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and ship out a software update to customers. Roughly 300 new samples of viruses await the pair on a(n)
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day.
Carrera has created a mathematical formula(公式), to
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easily the software structure of viruses. With it, he is better able to compare the many variants(变种) and families of malware(恶意软件). To his
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