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【单选题】

The ______ in e-mail messages has affected almost every computer around the world and has caused the damage of up to US$1 billion in NorthAmericA、
A．illness
B．virus
C．weakness
D．attachment

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根据网考网移动考试中心的统计，该试题：

14%的考友选择了A选项

70%的考友选择了B选项

5%的考友选择了C选项

11%的考友选择了D选项

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