- 1.20 The Historical Significance of American Revolution
- 20 The Historical Significance of American Revolution The ways of history are so intricate and the motivations of human actions so complex that it is ...
- 2.19 Children's Numerical Skills
- 19.childrens numerical skills people appear to born to compute. The numerical skills of children develop so early and so inexorably that it is easy to...
- 3.18 Modern American Universities
- 18.Modern American Universities Before the 1850s, the United States had a number of small colleges, most of them dating from colonial days. They were ...
- 4.17 Evolution of Sleep
- 17.Evolution of sleep Sleep is very ancient. In the electroencephalographic sense we share it with all the primates and almost all the other mammals a...
- 5.16 The War between Britain and France
- 16. the war between Britain and France In the late eighteenth century, battles raged in almost every corner of Europe, as well as in the Middle East, ...
- 6.15 The Nobel Academy
- 15 The Nobel Academy For the last 82years, Sweden's Nobel Academy has decided who will receive the Nobel Prize in Literature, thereby determining who ...
- 7.14 A Rare Fossil Record
- 14 A Rare Fossil Record The preservation of embryos and juveniles is a rate occurrence in the fossil record. The tiny, delicate skeletons are usually ...
- 8.13 Skyscrapers and Environment
- 13 Skyscrapers and Environment In the late 1960's, many people in North America turned their attention to environmental problems, and new steel-and-gl...
- 9.12 Museums
- 12 Museums From Boston to Los Angeles, from New York City to Chicago to Dallas, museums are either planning, building, or wrapping up wholesale expans...
- 10.11 Archaeology
- Archaeology is a source of history, not just a bumble auxiliary discipline. Archaeological data are historical documents in their own right, not mere ...
- 1.10 Types of Speech
- 10 Types of Speech Standard usage includes those words and expressions understood, used, and accepted by a majority of the speakers of a language in a...
- 2.09 Suburbanization
- 09 Suburbanization If by suburb is meant an urban margin that grows more rapidly than its already developed interior, the process of suburbanization b...
- 3.08 American Revolution
- 08 American Revolution The American Revolution was not a revolution in the sense of a radical or toal change .It was not a sudden and violent overturn...
- 4.07 Andrew Carnegie
- 07 Andrew Carnegie Andrew Carnegie, known as the King of Steel, built the steel industry in the United States, and , in the process, became one of the...
- 5.06 Television
- 06 Television Television-----the most pervasive（弥漫性的，渗透性的） and persuasive(有说服力的，使人信服的) of modern technologies, marked by rapid c...
- 6.05 The Beginning of Drama
- 05 The Beginning of Drama There are many theories about the beginning of drama in ancient Greece. The one most widely accepted today is based on the a...
- 7.04 Electricity
- 04 Electricity The modern age is an age of electricity. People are so used to electric lights, radio, televisions, and telephones that it is hard to i...
- 8.03 The Definition of Price
- 03 The Definition of Price Prices determine how resources are to be used.(价格决定多少资源被使用) They are also the means by which products and servic...
- 9.02 Schooling and Education
- 02 Schooling and Education It is commonly believed in United States that school is where people go to get an education. Nevertheless（然而，不过）, it...
- 10.01 The Language of Music
- 01 The Language of Music A painter hangs his or her finished pictures on a wall, and everyone can see it. A composer writes a work, but no one can hea...
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