大学生英语竞赛A类阅读理解专项强化真题试卷14
阅读理解
About forty percent of all email traffic in the United States is spam, and this figure is climbing rapidly. Spam is usually defined as unsolicited, mass commercial email. It is often associated with advertisements for pornographic websites, drugs, or surgery that can enhance your sex life. Within another year or so, industry experts predict, half of all email messages will be unsolicited.
1.Spam is defined as any commercial email.(B)
A. YES
B. NO
C.
解析：原文中第一段第二句话提到Spam is usually defined as unsolicited，mass commercial email．因此，垃圾邮件不同于一般的商业邮件。
2.Spammers use software to guess at email addresses.(A)
A. YES
B. NO
C.
解析：原文中提到With special software，spammers can generate millions of random entail ad—dresses using combinations of letters such as“Joe236．”placed in front of the“@aol．com”part of the address．
3.The only way to slow spam is to buy a spam filler.(B)
A. YES
B. NO
C.
解析：在文章的最后，作者指出邮件使用者可以通过一些简单的方法来抵制垃圾邮件，例如Don’t click the“unsubscribe”link．／Keep many email accounts．等等。
4.Which of the following is NOT a problem caused by spam?(C)
A. Email users are frustrated.
B. Companies lose money.
C. Internet chat rooms attract many users.
D. Employees lose work time.
解析：由原文中第二段Additionally，it costs corporations billions of dollars and reduces employee productivity．According to a recent study，the average employee spends almost seven minutes per day handling an average of 13 spam messages．可知，垃圾邮件不仅使公司丢失大笔资金，使员工沮丧，降低员工生产力，而且还浪费了员工的工作时间。
5.What position do major ISPs take towards spam?(B)
A. They encourage it.
B. They are against it.
C. They think anti-spam legislation violates individual rights.
D. They find they just can’t do anything about it.
解析：由原文中Major ISPs are aggressively pushing for national laws against spamming．一句可知，major ISPs极力争取通过抵制垃圾邮件的法律。
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.
6.
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。
7.
providers
解析：参见Internet service providers are the front line defenders against spam一句。ISP因特网服务提供商。
8.
hide
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