理工专业英语教程（3）（大学专业英语系列教材）

《大学专业英语系列教材》是根据教育部最新颁布的《大学英语教学大纲》的基本要求，为大学英语学习四年不断线而编写的一套教材。该套教材的编写得到了教育部高等教育司的大力支持。
　　本套教材分法学专业英语、经济学专业英语、管理学专业英语、人文科学专业英语和理工专业英语，每一系列包括三个分册，每一分册供一个学期使用。全套教材由复旦大学、中国人民大学、南京大学、北京科技大学联合编写，南京大学杨治中教授担任总主编。法学专业英语教程由赵建、夏国佐教授主编；管理学专业英语教程由邱东林、华宏鸣教授主编；经济学专业英语教程由翟象俊教授主编，参加编写的有张勇先教授等；人文科学专业英语教程由谌馨荪教授主编，参加编写的有郭庆民、张卫平和章安祺教授；理工专业英语教程由彭漪、张敬源教授主编。全套教材由专业英语教师和公共英语教师共同编写。
　　本系列教材具有如下特点：
　　一、考虑到我国大学生学完两年英语后的实际水平，课文的选材、注解和练习以《大学英语教学大纲》所要求的四级为基础。
　　二、教材在内容和语言上贯彻循序渐进的原则。在内容上，第一册主要涉及本专业的原理和基础知识，第二册、第三册主要涉及本专业的历史及专家论点；其要旨在于帮助学生完成从基础英语到专业英语的过渡。在语言上，选材从难度、可读性等方面出发，贯穿了由浅入深的原则。
　　三、考虑到《大学英语教学大纲》对专业英语学时和阅读量的要求，我们主要采用了主、副课文(阅读文章)制，对主课文从注解和练习两方面进行了重点处理，用作教师课内重点讲解的内容，副课文(阅读文章)主要供学生课后自学，以便对主课文从语言和知识两方面起到巩固作用。
　　四、本教材强调理解的准确性和学生的应用能力，因此，练习针对这两方面进行了重点编写，配有理解、语言应用(包括词汇应用、语句应用)等练习，理解题强调准确理解、思考、分析、评价、讨论，每课练习中所采用的例句从知识和语言上均与主课文或已学过的课文有关。
　　五、为方便自学，书后提供了主课文的参考译文和练习答案。
　　六、全套五种教材在遵循总的编写原则的同时，又根据各自课程的知识特点自成体系

Unit One
Text：The Seven Pillars of Life
Exercises
Supplementary Reading：Globalization and Biology
Unit Two
Text：The Outrageous Hypothesis
Exercises
Supplementary Reading：Rethinking Water on Mars
Unit Three
Text：Pollution Scenario
Exercises
Supplementary Reading：Unnatural Selecti
Unit Four
Text：Making Every Drop Count
Exercises
Supplementary Reading：Demand Is Down--But of How Long？
Unit Five
Text：Creating Convergence
Exercises
Supplementary Reading：Seeking the Killer Appliance
Unit Six
Text:Is Global Warming Harmful to Health?
Exercises
Supplementary Reading: The Healtht Problems of Global Warming
Unit Seven
Text:Rebuiding the Food Pyramid
Exercises
Supplementary Reading:Rebuilding the Food Pyramid
Unit Eight
Text:How to Build a Time Machine
Exercises
Supplementary Reading:How to Build a Time Machine
Unit Nine
Text:The Future of the Brazilian Amazon
Exercises
Supplemenrary Reading:Frontier Governance in Amazonia
Unit Ten
Text:Is Safe Mail Worth the Price?
Exercises
Supplementary Reading:National Security and the Biological Research
练习参考答案
课文参考译文
Glossary

书摘：

Text:
Making Every Drop Count
Peter H. Gleick
The history of human civilization is entwined with the history of the wayswe have learned to manipulate water resources. The earliest agricultural com-munities emerged where crops could be cultivated with dependable rainfall andperennial rivers. Simple irrigation canals permitted greater crop production andlonger growing seasons in dry areas. Five thousand years ago settlements inthe Indus Valley were built with pipes for water supply and ditches for wastewa-ter. Athens and Pompeii, like most Greco-Roman towns of their time, main-tained elaborate systems for water supply and drainage.
As towns gradually expanded, water was brought from increasingly emotesources, leading to sophisticated engineering efforts, such as dams and aque-
ducts. At the height of the Roman Empire, nine major systems, with an innova-tive layout of pipes and well-built sewers, supplied the occupants of Rome withas much water per person as is provided in many parts of the industrial worldtoday.
During the industrial revolution and population explosion of the 19th and20th centuries, the demand for water rose dramatically. Unprecedented con-struction of tens of thousands of monumental engineering projects designed to
control floods, protect clean water supplies, and provide water for irrigationand hydropower brought great benefits to hundreds of millions of people.Thanks to improved sewer systems, water-related diseases such as choleraand typhoid, once endemic throughout the world, have largely been conqueredin the more industrial nations. Vast cities, incapable of surviving on their localresources, have bloomed in the desert with water brought from hundreds andeven thousands of miles away. Food production has kept pace with soaringpopulations mainly because of the expansion of artificial irrigation systems thatmake possible the growth of 40 percent of the world's food. Nearly one fifth ofall the electricity generated w ……

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