【文章大意】 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。说明了网上广告的优缺点。
1.What does the word “spam” in the last sentence of the first paragraph probably refer to?
A.Unwanted electronic information.
B.Serious computer viruses.
C.Advertisements sent by dishonest companies.
D.Companies sending out the same sales information.
解析:选A。词义猜测题。从上下文看,下文说很多公司使用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。
2.Why do some companies send spam?
A.To make friends on the Internet.
B.To promote their products on the Internet.
C.To send some viruses to your company.
D.To make computer communication much easier.
解析:选B。细节理解题。根据第三段的Most spam is sent by companies who are trying to get you to buy their products.的描述,可知答案应该选B。
3.According to the writer,how can we deal with spam?
A.Look out for any spam that reaches your computer.
B.Don’t trust any information on the Internet.
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