Electronic Commerce Prentice Hall © 2006 2 Learning Objectives 1. Describe the need for justifying EC investments, how it is done, and how metrics are used to determine justification. 2. Understand the difficulties in measuring and justifying EC investments. 3. Recognize the difficulties in establishing intangible metrics and describe how to overcome them

一、词汇和语法（本大题共 20 小题，每小题 1 分，共 20 分） 根据句子的意思选择一个正确的答案，错选、多选或未选均无分。 1. It‘s______ by coach from Melbourne to Sydney. A. a nine hour‘s journey B. a nine hour journey C. a nine hours‘ journey D. a nine-hours journey

Do You Need a License to Handle Radioactive Materials? Whichever type of license is granted by the Nuclear Regulatory Commission (NRC), it tends to be a single license issued to the institution itself, to regulate its entire radioisotope usage. Separate licenses are not normally granted to the various departments or to individuals at that institution

Compound dictation Questions & Answers Watch & Discuss Main idea and devices for developing it How to apply to our real life the typical expressions and patterns taken from the text Blank filling All the exercises for Section A 说明文写作技巧 Pre-reading Activities Expressions & Patterns Exercises Text Analysis Summary Paragraph Writing

1. Listen and talk about the problem of drug abuse 2. Read about the disastrous effects of Ecstasy 3. Write about the risks of taking drugs or other harmful substance 4. Practice reading skills: text cohesive devices 5. Practice translating skills: translation of “it” 6. Learn and practice paragraph development by cause and effect 7. Learn to write a public warning message

Unit 1 Passage 1 The American economic system is organized around a basically private-enterprise, market-oriented economy in which consumers largely determine what shall be produced by spending their money in the marketplace for those goods and services that they want most. Private businessmen. striving to make profits, produce these goods and services in competition with other businessmen; and the profit motive, operating under competitive pressures, largely determines how these goods and services are produced. Thus, in the American economic system it is the demand of individual

Solid wastes include all solid or semisolid materials that the possessor no longer considers of sufficient value to retain. The management of these waste materials is the fundamental concern of all the activities encompassed in solid waste management—whether the planning level is local, regional or subregional, or state and federal. For this reason, it is important to know as much about municipal solid waste (MSW) as possible. The purpose of this chapter is to identify the sources, types, and composition of solid wastes

The students will learn rhythm of English speech. Objectives: Students will be able to: 1. Define - in their own words a definition for rhythm of English speech. It is a revision and therefore, easy for most of the students; 2. Compare – based on the understanding of the basic concept, compare different types of speech rhythm in connected speech;

Test What's your self-image? If you are not certain about it, you might as well finish the questionnaire and What's your favorite color of clothes? A. The color of the Earth and your nationality B. Grey and sedative color C. Simple and pure colors like blue D. Lovely and tender color. E. Bright and symmetrical color

Text A: fantasy, suspicion, injection, deputy, considerate, restore, estate, fantastic, multiple, furnish, deceive, commission, substantial, arrest, motive, justify exceeding, swear, disguise, switch e Text B: romantics, mysterious, e it, sigh, simplify, standpoint, heave, shiver, 2. Key phrases and expressions Text A: raise a glass to, turn out, buy up, live out, add on, fix up, sell sth at a loss Text B: read about, for one thing, in the night, make an appointment, switch on, raise the devil answer the door. stare after 3. Key structures