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Do not repeat thewords in italics.exam pleThe suspension bridge was built to link together two islands. (Why)Why was the suspension bridge built?1 The first telephones were installed in the 1880s. (When)2 Radar w as first used on ships sailing through icebergs. (Where)3 The first radios were powered by means o f large batteries. (How)4 Television w as invented in the early 20th century. (When)5 The space station w as launched to allow scientists to do experiments in space.Photocopiable © Oxford U niversity Press 93unicationRead the guide to codes and discuss it with your group until you are sure youunderstand how the two codes work.Here are two different ways to code the sam e m essage.Real m essage: CARS ARE DESIGNED BY COMPUTERCoded m essage using method l.
EDE BYC UTE SAR OMP NED CAR RXY SIGCoded m essage using method 2: XVMNV MZYZN DBIZY WTXJH KPOZMHow do they work?Method 1 Real m essage: CARS ARE DESIGNED BY COMPUTERCARSAREDES IGNEDBYCOMPUTERXY123456789368275194EDEBYCUTESAROMPNEDCARRXYSIGKey: 123456789 (real m essage) O 368275194 (coded m essage)Procedure:1 Divide the m essage into groups of three letters.2 Add ‘dum m y’ letters (e.g. X, Y, or Z) at the end to complete a group.3 Change the order of the groups, using the key.M ethod 2 Real m essage: CARS ARE DESIGNED BY COMPUTERCARSAR ED ESIGN EDBYCOMPUTERXVMNVMZYZND B IZ YWTXJHKPOZMKey: M ove the alp babet forward by five characters:A B CDEO VWX YZF G H I J K L M N O P O R S TU V W X Y Z (real message)A B C D E F G H I J K L M N O P O R S T U (coded m essage)Procedure:1 Divide the m essage into groups of five letters.2 If necessary, add ‘dum m y’ letters (e.g.
X, Y, or Z) at the end to complete a group (notneeded here).3 Change each letter to another letter, using the key.2 With your group, solve these coded m essages. Each m essage uses one ofthe twomethods shown above, but with a different key. The m essages are all taken from thereading passage on p.87 ofthe Student’s Book. They are the nam es of items ofequipment or processes used in the design and m anufacture of cars.1IDEERAPUT DDENXZSIGCOM2DMA U R IE R A NGZA CTPUTCOM I D E3FRPSXWHUQX P H U L FDOFRQWUROO HGZAX4EQORW V G T K P V G I T CVGFOCPWHCENUFVWTRPIZAZB3 With your group, devise a new code system.
Write your system out clearly like theones in 1. Make sure you write out the procedure and the key.4 Write a short sentence (approximately 20-25 letters) in your new code. Remember toadd ‘dum m y’ letters if the last group of letters is too short. Give your coded m essage toone of the other groups, and time how long they take to ‘crack’ the code. Take thesentence from one of the exercises in the Student's Book.13 Grammar test1 Complete the sentences about a brother and a sister, Roberto and Renata, using thePresent Perfect or Past Simple form of the verbs in brackets.1 Roberto(be) a computer technician for the last three years.2 During this time, h e _____________ (set up) five networks for large companies.3 Before becoming a computer technician, h e _____________ (be) a computerrepair m an in a shop for four years.4 During those four years h e ________(repair) hundreds of computers.5 Since 2006 h e _____________ (work) for Dynatron, the biggest company in theregion.6 Roberto and Renata b o th ________they were at school.(become) interested in computers while7 In September 2006, R en ata______computer science._ (begin) a university course in8 Over the last three months Renata(take) three exams.2 Look at the table.
Complete the answers with since orfor, then write the questions.Begin: How lon g... ?exam pleABABHow long has the International Space Station (ISS)been in space?It has been in space since 1998.How long did the manned missions to the Moon continue?They continued for three years.1 They have travelled to space sta tio n s_____________ 1981.2 It remained in sp a c e _____________fifteen years.3 They have flown to Mars.
1960.4 They have orbited Earth _1957.5 It has been in sp a c e ____6 The m ission w as in space1990.fourteen years.ProjectStartedFinished?International Space Station in space1998NoManned missionsto the Moon1969Yes, 19721 Space shuttles to space stations1981No2 Russian Mir space station in space1986Yes, 20013 Space missionsto Mars1965No4 Satellites orbiting Earth1957No5 HubbleTelescope in space1990No6 Galileo Mission to planet Jupiter1989Yes, 2003Photocopiable © Oxford University Press 9513 CommunicationGroup AFrequently Asked Questions about VoIPWhat are the main advantages of VoIP?VoIP is much cheaper than telephone.
VoIP has a small flat-ratecharge for all calls, including long-distance and international.You can talk with many people in different places at the sametime. Online meetings are easy.Pictures, videos, music files can be sent at the same time.Online customer support is quicker and better than withtelephone landlines or mobile phones.VoIP is portable - you can call from anywhere in the world bylogging into your account on the computer. Your phonenumber is the same everywhere.The hardware is small and lightweight - headset or small IPphone.VoIP has excellent coverage all over the world. Compare thiswith poor coverage of mobile phones in some parts of the world.Add any other advantages you have discovered in your own research:What arguments do you think Group B will make? Note the points you could make against these arguments.2 *r.Croup BU S lx JFrequently Asked Questions about VoIPWhat are the main disadvantages of VoIP?VoIP only works if your computer is switched on and thesoftware is running.
The other person must have the samesoftware loaded and running on his / her computer.If there is a power cut, you can’t use VoIP (unless you havebattery back-up). Landline phone stays on because of currentin phone line.Some VoIP companies only allow you to call someonesubscribing to the same company.Difficult to use for emergency services - the operator cannotlocate your address.The sound quality can be poor - delay, echo, silent patches.You must have a second computer set up if you want to run asecond phone line.If a company changes to VoIP, it has to buy headsets or internetphones-expensive.VoIP can only be used with broadband connection.Add any other disadvantages you have discovered in your own research:What arguments do you think Group A will make? Note the points you could make against these arguments.14 Grammar test1 Rewrite the statem ents using must, m ustn’t, should, or shouldn’t.exam pleA requirement for all applicants for this job is a degree inengineering.All applicants fo r this job must have a degree in engineering.1 It is essential that candidates for the job are not over 6 5 years old.2 Preference will be given to applicants who do not smoke.3 Applicants for this post are required to be good team players.4 Speaking a foreign language by candidates is preferable.5 It is essential that applicants do not live more than ten miles from London.2 Put a tick in the correct box next to each question.What the questioner expects...InformationYes or NoLonger answer/1 W hat’syo urfull name?2 Doyou hold a driving licence?3 When did you getyourdiploma?4 W heredidyou studyforyourdiplom a?5 Did you enjoy the course?6 What was your favourite subject?7 What did you like about it?8 Why doyou w an tthis job?3 Complete these questions an interviewer asked Aisha Chetty (see Student's Bookp.101).
Use the verbs in brackets.Where__________________ (work) now?How long__________ (work) at Western IT?H ave____(work) for any other companies?W hen.WhereWhat subjects.(gain) your HND?________________ (go) to college?(study) at college?7 How lo n g ______________(study) for your HND?8 W hy________(organize) a class visit to France Telecom?Photocopiable © Oxford U niversity Press 9714 Communication1 With your whole group,complete this jobadvertisement givingdetails of a job which youwould like to apply for.2 Now divide your groupinto two sub-groups: A isthe interviewing panel, B isthe interviewee.is looking for ato join a team o f ________based in thecity o f _____________ Candidates preferablyshould have a Certificate or Diploma in____________ , but other technical areas willName of company:(e.g.
Network Solutions CoLtd)Job title:(e.g. Software Technician)be considered. Additional practical skills inOther job titles in team:(e.g. IT Specialists)_______________Name of city:would be an advantage.Candidates m ust be prepared to workirregu lar hours and to travel. Experienceworking in _____________ is an advantagebut not essential. The successful candidatewill be able to work well in a team, and havegood communication skills.Field of study:(e.g.
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