Part 1 Social Studies 社會科學 1. The First Americans and the Land They Found **批美洲人及美洲的發現 ...............2 2. How the American Indians Lived 印第安人如何生存 ..........................................................8 3. National Profiles of the United States 美國概況 ...............................................................15 4. American Symbols 美國的象征 .............................................................................................22 5. Patriotic Documents 愛國文獻 ..............................................................................................27 6. Land of Second Chances 賜予二次機遇的土地 .................................................................36 7. The Flag Etiquette 國旗禮儀 ..................................................................................................42 Part 2 Science 自然科學 8. Discoveries 發現 ......................................................................................................................49 9. The Universe 宇宙 ...................................................................................................................58 10. Genes 基因 .............................................................................................................................65 11. Ecology 生態 ...........................................................................................................................72 12. Communications 通信 ..........................................................................................................82 13. Body Defenses 人體防御 .....................................................................................................91 14. The Animal Kingdom 動物王國 ...........................................................................................99 15. Volcanoes 火山 ....................................................................................................................106 16. Franklin's Folly 富蘭克林的荒唐事 ....................................................................................114 Part 3 Literature 文學 17. Doc Brackett 布萊克特醫生 ................................................................................................122 18. After Twenty Years 二十年后 .............................................................................................129 19. Companions 伙伴 ................................................................................................................140 20. The Discontented Pendulum 不滿的鐘擺 .......................................................................146 21. Mending Wall 補墻 ..............................................................................................................154 22. A Lesson from the Eagle 雕的啟示 ..................................................................................160 23. Cheerfulness 快樂 ...............................................................................................................167 Part 4 Life Encyclopedia 生活百科 24. Renaissance Period Music and Art 文藝復興時期的音樂和繪畫 ...............................175 25. First Aid and Your Body 急救和人體 ................................................................................181 26. Dealing with Stress 緩解壓力 ............................................................................................187 27. Nutrition 營養 ........................................................................................................................193 28. Alcohol 酒 ..............................................................................................................................202 29. Environmental Safety: Preparing for the Worst 環境安全： 做好*壞的打算 .........208 30. Cancer 癌癥 .........................................................................................................................217