Peking University Press is authorized by Thomson Learning to publish and distribute exclusively this bilingual
　　edition．This edition is authorized for sale in the People’s Republic of China only(excluding Hong Kong，Macao SARs and Taiwan)．Unauthorized export of this edition is a violation of the Copyright Act．No part of this publication may be reproduced or distributed by any means，or stored in a database or retrieval system，without the prior written permission of the publisher．
　　本书简体中文版由汤姆森学习出版集团授权北京大学出版社独家出版发行。此版本仅限在中华人民共和国境内(不包括中国香港、澳门特别行政区及中国台湾地区)销售。未经授权的本书出口将被视为违反版权法的行为。未经出版者预先书面许可，不得以任何方式复制或发行本书的任何部分。