14．You may open your electronic mail and find information about how to buy medicine，cheap airline tickets，and books and，of course，computers and computer products．There may also be offers for investment deals，bank loans and special holidays．However，to many computer users，this use of electronic spam to sell products has become a major problem as it makes computer communication more difficult．
Many companies who want to send a great deal of advertising might use the services of a"spammer．"A spammer is a person or company that uses computers to send out millions of copies of the same sales information．Spammers find e-mail addresses from websites，news groups and"chat rooms"where people send messages to each other．
Most spam is sent by companies who are trying to get you to buy their products．Some of these are honest companies that offer good products or services for fair prices．These companies can offer their products for a cheaper price than you might find in a store．However，much of the spam on the Internet is sent by criminals who are trying to sell products that do not exist or offer services they will not provide．They are only interested in stealing your money．When you answer their spam，you find you are expected to send them money and receive a gift．If you just follow what they ask you to do without any consideration，it is likely that you will be cheated and lose some money．
28．What does the word"spam"in the last sentence of the first paragraph probably refer to？A
A．Unwanted electronic information
B．serious computer viruses
C．Advertisements sent by dishonest companies
D．Companies sending out the same sales information．
29．Why do some companies send spam？B
A．to make friends on the Internet．
B．to promote their producta on the Internet．
C．to send some virses to your company．
D．to make computer communication much easier
30．According to the writer，how can we deal with spam？A
A．Look out for any spam that reaches your computer．
B．Don't trust any information on the Internet．
C．But the cheaper products advertised in the spam．
D．Don't buy anything advertised in the spams．
31．The auther's main purpose of writing this passage is toC．
A．explain what spam is
B．find out who send out spam
C．warn readers of the possible dangers of spam
D．show the advantages and disadvantages of spam．
分析 全文大意
郵箱里的各類產品推銷的郵件使網上交流變得困難．有些郵件推銷的產品，品質有保證，價格還合理，還會低于實體店．而大多數的郵件是騙人的．如果你輕易相信的話，很有可能就會上當受騙，損失錢財．
解答 28．A 詞義猜測題．根據下文第二段第一句Many companies who want to send a great deal of advertising might use the services of a"spammer．"以及spam所在的句子…has become a major problem as it makes computer communication more difficult．"很多公司使用spammer提供的服務在網上發布廣告，使網上交流變得困難"．兩者結合起來可知，其含義是向網絡用戶發送用戶不需要的商業廣告信息．故選A．
29．B 細節理解題．根據第三段Most spam is sent by companies who are trying to get you to buy their products．可知，公司發送垃圾郵件的目的是為了銷售產品．故選B．
30．A 推理判斷題．根據第三段If you just follow what they ask you to do without any consideration，it is likely that you will be cheated and lose some money．可知，如果輕易相信垃圾郵件所說，很有可能就會上當受騙．所以一定要小心為妙，多個心眼，謹防上當．故選A．
31．C 寫作意圖題．根據作者的描述可知，郵箱里的郵件一類是真的推銷物美價廉的產品，另一類是騙人錢財的郵件．作者提醒大家慎重對待，謹防上當．故選C．
點評 細節理解題可根據題干中的關鍵詞定位到原文中相關的信息，從而找出答案．譬如29題，可根據題干中的關鍵詞companies send spam定位到第三段第一句，從而找出答案．
