2. 外语
  3. Spam messages are increasing rapidly and are soon expected to make up about half of all email messages. Using【70】______methods,

Spam messages are increasing rapidly and are soon expected to make up about half of all email messages. Using【70】______methods,

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问题     Spam messages are increasing rapidly and are soon expected to make up about half of all email messages. Using【70】______methods, spammers can send millions of emails with the click of a button. Anti-spammers struggle to keep up with their tactics, using trained technicians and software filters to minimise spam. Internet service【71】______are leading the fight against spam, which costs them and their customers billions of dollars each year. Anti-spam technicians watch the flow of email on the Internet, keeping an eve out for mass mailings. However, spammers are hard to track, since they can easily【72】______in the web of technology. Some small companies are trying to fight spam by collecting the email addresses of spam senders and publicizing them. Individuals can slow spam too, by【73】______chat groups, choosing a longer email address, and keeping multiple accounts. Still, in the long run, it may take new【74】______ or stricter laws to stop spam. In the meantime, users will continue【75】______under huge quantities of spam.
选项
答案aggressive
解析 由Spam is usually defined as unsolicited，mass commercial email．一句可知，垃圾邮件发送者使用的是一种侵犯性的方法来发送垃圾邮件的。
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本试题收录于： A类竞赛（研究生）题库大学生英语竞赛（NECCS）分类
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