新东方优美背诵短文50篇 Unit36:Plate Tectonics and Sea-floor Spreading 36.Plate Tectonics and Sea-floor Spreading The theory of plate tectonics describes the motions of the lithosphere, the comparatively rigid o
Cells and Temperature Cells cannot remain alive outside certain limits of temperature, and much narrower limits mark the boundaries of effective functioning. Enzyme systems of mammals and birds are mo
I grew up in a small town where the elementary school was a ten-minute walk from my house and in an age when children could go home for lunch. At the time, I did not consider this a luxury, although
Relish the Moment Tucked away in our subconsciousness is an idyllic vision. We see ourselves on a long trip that spans the moment. We are traveling by train. Out the windows, we drink in the passing s
The Salinity of Ocean Waters If the salinity of ocean waters is analyzed, it is found to vary only slightly from place to place. Nevertheless, some of these small changes are important. There are thre
After thirty years of married happiness, he could still remind himself that Victoria was endowed with every charm except the thrilling touch of human frailty. Though her perfection discouraged pleasur
The American Civil War The military aspect of the United States Civil War has always attracted the most attention from scholars. The roar of gunfire, the massed movements of uniformed men, the shrill
Treasure in Sunken Ships Of the tens of thousands of ships on the ocean bottom, only a handful, less than 1 percent, contain negotiable treasure, such as gold and jewels. Most give us a different pric
On Motes and Beams It is curious that our own offenses should seem so much less heinous than the offenses of others. I suppose the reason is that we know all the circumstances that have occasioned the
新东方优美背诵短文50篇 Unit43:Statistics 43.Statistics There were two widely divergent influences on the early development of statistical methods. Statistics had a mother who was dedicated to keeping orderly re
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,South Africa, the West Indies, and Latin America. In re
Youth Youth is not a time of life; it is a state of mind; it is not a matter of rosy cheeks, red lips and supple knees; it is a matter of the will, a quality of the imagination, a vigor of the emotion
YOUTH Youth is not a time of life，it is a state of mind; it is not a matter of rosy cheeks, red lips and supple knees， it is a matter of the will, a quality of the imagination, a vigor of the emotions
Be Happy! “The days that make us happy make us wise.”----John Masefield when I first read this line by England’s Poet Laureate, it startled me. What did Masefield mean? Without thinking about it much,
Population Growth The growth of population during the past few centuries is no proof that population will continue to grow straight upward toward infinity and doom. On the contrary, demographic histor
新东方优美背诵短文50篇 Unit44:Obtaining Fresh water from icebergs 44.Obtaining Fresh water from icebergs The concept of obtaining fresh water from icebergs that are towed to populated areas and arid regions of
In all societies, male and female roles are regarded differently. The mother role is universally carried out by women, which is biologically based. Roles defined by sex also characterize the economic
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 level of formality. As s
