Chapter 1: Introduction Applications of Database Systems Database Systems versus File Systems View of Data Data Models Database Language Database Users and Administrator Transaction Management Database System Structure Application Architectures

Chapter 4: SQL Background Basic Structure Set Operations Aggregate Functions Null Values Nested Subqueries Derived Relations Views Modification of the Database Joined Relations

这一章中,我们介绍物质的微观结构——原子结构化学工作者总是希望通过对物质 本质的认识,来阐明元素相互化合的原理,把化学事实系统化,使化学成为可以理解的、 容易加以记忆的学科。人们利用这些原理来预言具有新功能的化合物的诞生。例如科学家 利用等电子原理( the isoelectronic principle)合成新的化合物:

Text A Public Attitudes toward Science Part 1 Objectives Part 2 Cultural Notes Part 3 Text Structure Part 4 Language Points Part 5 Content Questions

Part 1 Objectives Part 2 Discussion Part 3 Background Part 4 Structure Study Part 5 Language points Part 6 Content Questions

Text A All the Cab Had Was a Letter Part 1 Objectives Part 2 Cultural Notes Part 3 Text Structure Part 4 Language Points Part Content Questions

Teaching Objectives 1)understand the main idea(despite the many negative effects of virtual life the author prefers it to real life) and the structure of the text(contrast between virtual life and real life); -2)learn some rules of interpreting new vocabulary

grasp the main idea(we should adopt a sensible environmentalism) and the structure of the text(each part containing a contrast) 2)appreciate the various argumentative skills employed in the text 3master the key language points and grammatical structures in the text

Objectives Students will be able to: 1. understand the main idea(cloning is a two- edged sword) and structure of the text; 2. appreciate the writing strategies employed by the author, 3. master the key language points and grammatical structures in the text;

Text A Smart Cars Part 1 Objectives Part 2 Background Part 3 Structure Study LR Part 4 Language Points