Từ khi được phát hiện đến nay, dầu mỏ và khí đã và đang là nguồn nguyên liệu vô cùng quý giá của mỗi Quốc gia nói chung và toàn nhân loại nói riêng. Ngày nay sản phẩm của dầu mỏ và khí đang có mặt trong hầu hết các lĩnh vực đời sống sinh hoạt hàng ngày của con người cũng như công nghiệp. Dưới gốc độ năng lượng thì dầu mỏ là nguồn năng...

 252 p pdu 10/05/2012 92 1 Download

Often, of course, you are not free to choose at all. You must compose a report for a business meeting or write on an as- signed topic for an English class. The problem then becomes not what to write about but how to attack it, a question we'll discuss in Chapters 5 and 6.

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This textbook, like all textbooks, was born of necessity. When I went looking for a suitable textbook for my course on Lexical-Functional Grammar at the Hebrew University of Jerusalem, I discovered that there wasn’t one. So I decided to write one, based on my lecture notes. The writing accelerated when, while I was on sabbatical at Stanford University (August 1999– February 2000), Dikran Karagueuzian of CSLI...

 242 p pdu 20/04/2012 75 3 Download

All rights rights reseved, no part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or any means, electronic, mechaniacal, photocoppying, recording, or otherwise wihtout the pior written prrmission of the Publishers.

 209 p pdu 20/04/2012 114 5 Download

The A–Z of Correct English is a reference book which has been written for the student and the general reader. It aims to tackle the basic questions about spelling, punctuation, grammar and word usage that the student and the general reader are likely to ask. Throughout the book there are clear explanations, and exemplar sentences where they are needed.

 203 p pdu 20/04/2012 135 2 Download

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of Oxford University Press

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We are particularly grateful to Jeanne McCarten and Geraldine Mark at Cambridge University Press who provided us with so much clear-sighted help and creative guidance at all stages during the writing of this book. It was written to help you to improve your English vocacbulary. It will help you to learn not only the meanings of words but also how they are used. You can use this book either with a teacher or for self study.

 303 p pdu 20/04/2012 158 6 Download

English usage is a subject as wide as the English language itself. By far the greater part of usage, however, raises no ontroversies and poses no problems for native speakers of English, just because it is their natural idiom. But there are certain limited areas --particular sounds, spellings, words, and constructions--about which there arises uncertainty, difficulty, or disagreement. The proper aim of a usage guide is to resolve these...

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Prepositions are also followed by objects. object complement a word which is used to describe the object of a clause and which occurs with verbs such as 'make' and 'find'; EG It made me tired... I found her asleep. ordinal number a number that is used to indicate where something comes in an order or sequence; EG first, fifth, tenth, hundredth.

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There are 136 units in the book. Each unit concentrates on a particular point of grammar. Some problems (for example, the present perfect or the use of tbe) are covered in more than one unit. For a list of units, see the Contents at the beginning of the book. Each unit consists of two facing pages. On the left there are explanations and examples; on the right there are exercises. At the back of the book there is a Key for you to check your...

 470 p pdu 20/04/2012 153 8 Download

As Philadelphia grew from a small town into a city in the first half of the eighteenth century, it became an increasingly important marketing center for a vast and growing agricultural hinterland. Market days saw the crowded city even more crowded, as line fanners from within a radius of 24 or more kilometers brought their sheep, cows, pigs, vegetables, cider, and other products for direct sale to the townspeople. The High Street Market was...

 15 p pdu 20/04/2012 130 3 Download

However, in the absence of this tool, the Swiss Army knife may be more suitable as a substitute. For example, to cut a piece of bread the kitchen knife is more suitable, but when traveling the Swiss Army knife is fine. Similarly, when a problemto be solved froma domain where the problem-specific knowledge is absent evolutionary algorithms can be successfully applied. Evolutionary algorithms are easy to implement and often provide adequate...

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