Oil Refining An important new industry, oil refining, grew after the Civil war. Crude oil, or petroleum - a dark, thick ooze from the earth - had been known for hundreds of years, but little use had e
Raising Oysters In the oysters were raised in much the same way as dirt farmers raised tomatoes- by transplanting them. First, farmers selected the oyster bed, cleared the bottom of old shells and oth
Plate Tectonics and Sea-floor Spreading The theory of plate tectonics describes the motions of the lithosphere, the comparatively rigid outer layer of the Earth that includes all the crust and part of
Plankton浮游生物. Scattered through the seas of the world are billions of tons of small plants and animals called plankton. Most of these plants and animals are too small for the human eye to see. They dr
新概念优美背诵短文50篇 Unit8:American Revolution The American Revolution was not a sudden and violent overturning of the political and social framework, such as later occurred in France and Russia, when both we
Life doesn't always give us the joys we want.生活并非总是如你所愿。We don't always get our hopes and dreams, and we don't always get our own way.希望有时会落空，梦想有时会破灭，我们不能一切随心所愿。But don't give up hope, because you can
新概念优美背诵短文50篇 Unit16: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 E
03 The Definition of “Price” Prices determine how resources are to be used. They are also the means by which products and services that are in limited supply are rationed among buyers. The
新概念优美背诵短文50篇 Unit10:Types of Speech Standard usage includes those words and expressions understood, used, and accepted by a majority of the speakers of a language in any situation regardless of the le
新概念优美背诵短文50篇 Unit7: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 wealthiest men in America. His su
05 The Beginning of Drama There are many theories about the beginning of drama in ancient Greece. The on most widely accepted today is based on the assumption that drama evolved from ritual. The argum
新概念优美背诵短文50篇 Unit14: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 scattered
新概念优美背诵短文50篇 Unit11:Archaeology Archaeology Archaeology is a source of history, not just a bumble auxiliary discipline. Archaeological data are historical documents in their own right, not mere illust
Dufficulties arise in the lives of us all.生活中困难在所难免，What is most important is dealing with the hard times, coping with the changes, and getting through to the other side where the sun is still shining
A Grain of Sand 一粒沙子 William Blake/威廉.布莱克 To see a world in a grain of sand, And a heaven in a wild fllower, Hold infinity in the palm of your hand, And eternity in an hour. 从一粒沙子看到一个世界， 从一朵野花看到一个天堂，
新概念优美背诵短文50篇 Unit12: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 expansion programs. These pr
新概念优美背诵短文50篇 Unit15: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 will be
A Forever Friend 永远的朋友 "A friend walk in when the rest of the world walks out." "别人都走开的时候，朋友仍与你在一起。” Sometimes in life, 有时候在生活中， You find a special friend; 你会找到一个特别的朋友; Someone who changes your life j
新概念优美背诵短文50篇 Unit6:Television Television-----the most pervasive and persuasive of modern technologies, marked by rapid change and growth-is moving into a new era, an era of extraordinary sophisticatio
A Greek to Remember 一位值得纪念的希腊人 Diogenes was a famous Greek philosopher of the fourth century B.C.,who established the philosophy of cynicism.He often walked about in the daytime holding a lighted lant
