1、Unit 4Law and order随着垃圾邮件的泛滥，利用法律来保护网络用户的呼声越来越高了。Stop Spam!When I first got an email account ten years ago，I received communications only from family，friends，and colleagues.Now it seems that every time I check my email，I have an endless series of advertisements and other correspondence that do not i
2、nterest me at all.If we want email to continue to be useful，we need specific laws that make spamming(发送垃圾邮件)a crime.If lawmakers do not do something soon to prohibit spam，the problem will certainly get much worse.Computer programs allow spammers to send hundreds of millions of emails almost instantl
3、y.As more and more advertisers turn to spam to sell their products，individual(个人的)email boxes are often flooded with spam emails.Would people continue to use email if they had to deal with an annoying amount of spam each time?This problem is troubling for individuals and companies as well.Many spam
4、emails contain computer viruses that can shut down the entire network of a company.Companies rely on email for their employees to communicate with each other.Spam frequently causes failures in their local communications networks，and their employees are thus unable to communicate effectively.Such a s
5、ituation results in a loss of productivity and requires companies to repeatedly repair their networks.These computer problems raise production costs of companies，which are，in the end，passed on to the consumer.For these reasons，I believe that lawmakers need to legislate(立法) against spam.Spammers shou
6、ld be fined，and perhaps sent to prison if they continue to disturb people.Email is a tool which helps people all over the world to communicate conveniently，but spam is destroying this convenience.1What does the underlined word “correspondence”in Paragraph 1 probably mean?_2According to the text，what
7、 is the major cause of the flooding spam?_【答案】1.Messages.2.More advertisers begin to promote sales through spam. Section Welcome to the unit & ReadingPreparing词义搭配1deleteAto make a judgement about the nature or quality of sb./sth.2assessBto remove sth.that has been written or printed3ripe Ca rough w
8、ritten version of sth.that is not yet in its final form4firmDa business or company5leak Eto allow liquid or gas to get in or out through a small hole or crack6suspect Fto try to reach an agreement by formal discussion7draft Gfully grown and ready to be eaten8negotiate Hto have an idea that sth.is pr
9、obably true or likely to happen，especially sth.bad，but without having definite proof【答案】1.B2.A3.G4.D5.E6.H7.C8.F短语填空as well；relate to；in the end；break into；keep up with； refer to；prevent.from；in addition1We are going to take part in the party tonight，why dont you come_？2Lung cancer is often _smoking
10、.3_，he overcame all the difficulty he met with.4Work harder，and youll _your classmates.5He found his house _when he got home yesterday.6The heavy rain_him_going to the cinema.【答案】1.as well2.related to3.In the end4catch up with5.broken into6.prevented；from背诵下列教材中出现的句型，体会黑体部分的用法1A survey conducted in
11、2010 by the Computer Security Institute，a private organization in the USA，showed that 45.6 per cent of the 351 biggest companies and government agencies had had their security systems broken into in the previous year.一项由美国私人组织“计算机安全协会”在2010年进行的调查表明，351家最大的公司和政府机构中，45.6%的安全系统在前一年遭到入侵。2Considering how
12、 bad the situation with cybercrime against companies has become，many people wonder why so little is known about this.考虑到针对公司的网络犯罪的情况很恶劣，许多人质疑为什么我们对于这些犯罪知之甚少。3The only answer to this problem is international cooperation. 这个问题唯一的答案就是国际合作。 从三个选项中选择最佳答案1Which of the following is right?ACybercriminals ar
13、e more interested in getting money from large companies.BFraud against individuals is more serious.CReceiving emails promising money or cheques shows that youre lucky.2Which one of the measures will NOT be taken to prevent online crimes?AEducating people who use computers.BSeeking international coop
14、eration.CPreventing people from using the Internet.3Little is known about cybercrime because_.Athe situation is really too badBmany companies are unwilling to report the casesCthey fear they will lose customers【答案】1.A2.C3.B 完成下列表格Fight against cybercrimeFour 1._of cybercrimeCybercrime refers to any
15、2._related to the Internet.It was 3._four categories.1.It means crimes related to a lack of proper Internet security and spreading computer viruses.2.It refers to crimes that can be committed with or without a computer.3.It is some websites with offensive content or encouraging 4._.4.It means those
16、offence relating to breaking intellectual property and copyright laws.The 5._of cybercrimeAll Internet users are affected by Cybercrime directly or indirectly.Some peoples money is stolen by 6._.Worse still，many large companies are faced with a bigger problem.Hundreds of billions of dollars was lost
17、 every year because of cybercrime.The reasonsof cybercrime1.Many companies fear they will 7._ if they report the cases of cybercrime.2Cybercrime is so new that many governments have not yet passed laws against it.3Most countries dont have arrangements for dealing with 8._from other countries who may
18、 have committed cybercrime.The solution to cybercrimeThe only solution to this problem is 9._.In addition，it is very important to draft new laws and 10._ international standard for fighting cybercrime.【答案】1.categories2.criminal offence3classified into4.hatred or violence5.effect6email7.lose customer
19、s8.suspects9international cooperation10.negotiate 完成下面课文缩写With the Internet 1._ (expand) in recent years, cybercrime has become a tough problem. The council of Europe has classified it 2._ four categories: we know that all Internet users are affected by cybercrime in one way or 3._.Most people have
20、received computer viruses and many have been the targets of emails.Although there are an 4._ (increase) number of such cases against people, crime against large companies is a 5._ (big) problem.Many companies and government agencies had had their security systems 6._ (break) into in 2010, 7._ (cause
21、) hundreds of billions of dollars loss worldwide.The main reason of cybercrime is that most cybercrime is not reported and some countries have no laws against it. Besides, most countries do not have 8._ (arrange) for dealing with suspects from other countries 9._ may have committed cybercrime.The only answer to this problem is international. Vinton Cerf, 10._ of the fathers of the Internet also agrees that teamwork is a key to dealing with cybercrime.【答案】1.expanding2.into3.another 4increasing5.bigger6.broken7.causing 8arrangements9.who10.one