【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 North America.
【简答题】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 North America. A.illness B.virus C.weakness D.Attachment A. B. C. D...
【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 North America.