Cambridge, New York, Melbourne, Madrid, Cape Town, Singapore, Sao Paulo, Delhi, Mexico City Cambridge University Press The Edinburgh Building, Cambridge CB2 8RU, UK www. cambri dge .o rg Information on this title: www.cambridge.org/9781107699892 Third edition © Cambridge University Press, 1999,2013 This publication is in copyright. Subject to statutory exception and to the provisions of relevant collective licensing agreements, no reproduction of any part may take place without the written permission of Cambridge University Press. First published 1999 Second edition 2005 Third edition first published 2013 Printed in Italy by L.E.G.O. S.p.A. A catalogue record for this publication is available from the British Library ISBN 978-1-107-69989-2 Paperback with answers and CD-ROM for Windows XR Vista or 7 and Mac OSX 10.6,10.7 ISBN 978-1-107-69738-6 Paperback with answers ISBN 978-1 -107-61378-2 Paperback without answers Cambridge University Press has no responsibility for the persistence or accuracy of URLs for external or third-party internet websites referred to in this publication, and does not guarantee that any content on such websites is, or will remain> accurate or appropriate. Information regarding prices, travel timetables and other factual information given in this work is correct at the time of first printing but Cambridge University Press does not guarantee the accuracy of such information thereafter.