The(72)in e-mail messages has affected almost every computer around the world and has caused the damage of up to US$1 billion in

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问题 The(72)in e-mail messages has affected almost every computer around the world and has caused the damage of up to US$1 billion in North America.

选项 A、illness
B、virus
C、weakness
D、attachment

答案B

解析 电子邮件中的病毒已感染了全球几乎每台计算机,在北美造成了多达10亿美元的损失。
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