分析 这是一篇说明文.这篇短文的作者告诉大家,要警惕互联网上的危险广告,很多公司使用spammer提供的服务在网上发布广告.使网上交流变得困难,可见其含义是向网络用户发送的用户不需要的商业广告信息.说明了网上广告的优缺点.作者的意图主要是提醒大家应该注意那些危险的信息.
解答 72.sell.考查动词的用法以及语境理解.根据上文You may open your electronic mail and find information about how to buy medicine,cheap airline tickets,books and,of course,computers and computer products.可知你可以打开你的电子邮箱,发现许多如何买东西的消息,所以这里是说利用垃圾邮件卖东西已经成了一个大问题;根据首字母s及语境,可知这里用sell,卖,动词.故填sell.
73.communication.考查名词的用法以及语境理解.根据But the use of electronic spam(垃圾邮件) to--products has become a major problem to many people as it makes computer--more difficult.
可知利用垃圾邮件买东西已经成了一个大问题,人们讨厌这些垃圾邮件,所以它 使得在电脑上交流变得更困难,因为人们都不相信了;根据首字母m,可知这里用communication,名词,交流.故填communication.
74.use.考查动词的用法以及语境理解.根据Many companies who want to send a lot of advertising may--the services of a"spammer".可知许多想发送大量广告的公司可能会使用垃圾邮件发送者提供的服务.根据首字母u,可知这里填use,动词,使用.故填use.
75.person.考查名词的用法以及语境理解.根据A spammer is a--or company that uses computers to send out millions of copies of the same sales information.可知 spammer 就是一个发送数百万相同购买信息的人或者公司,根据首字母p可以推断这里应该用表示人的名词person,名词,人.故填person.
76.addresses. 考查名词的用法以及语境理解.根据Spammers find e-mail--from websites,news groups and"chat rooms",可知垃圾邮件发送者要发送信息,就需要从网站等等地方找到邮件的发送地址,根据首字母a以及语境,可知用address,名词,地址.故填address.
77.messages.考查名词的用法以及语境理解.根据上文Spammers find e-mail--from websites,news groups and"chat rooms",可知垃圾邮件发送者从网站等等地方找到邮件的发送地址,来发送信息,根据首字母m及语境,这里用message,名词,信息.故填message.
78.honest.考查形容词的用法以及语境理解.根据下文offer good products for fair prices,可知以公平的价格提供好的产品的公司应该是很诚实的,所以这里用honest,形容词,诚实的.故填honest.
79.lower.考查比较级的用法以及语境理解.根据These companies can offer their products for a l--price than you might find in a store.句子中出现了than,所以前面应该用比较级形式,而且我们知道网上的东西要比店里的东西更便宜,根据首字母l,可知用lower.故填lower.
80.However.考查连词的用法以及语境理解.根据下文They are only interested in stealing your money.可知无论如何,有一些在网上只发布一些危险的信息,诱骗人上当,所以这里和前面所说的事情形成对比,用however来表示转折关系.故填however.
81.provide.考查动词的用法以及语境理解.根据offer things they will not p--.可知他们在网上不提供东西,根据首字母p以及语境,可知这里用provide,动词,提供.故填provide.
点评 本文为语法填空题.做题时先通览一遍全文,掌握大意;然后进行细读,结合前后语境及关键词并与首字母结合,准确判断出所填空的词性和意义,根据句子的需要,注意单词的各种变化,比如要考虑到名词的可数与不可数,单复数,时态和语态等等.总之只有考虑周全,才能把此类题目做好.
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