2. Although a surge in retail sales has raised hopes that a recovery is finally under way, many economists say that without a large amount of spending the recover might not last.
3. Although various eighteenth and nineteenth-century American poets had professed an interest in Native American poetry and had pretended to imitate Native American forms in their own works, it was not until almost 1900 that scholars and critics seriously began studying traditional Native American poetry in native languages.
5. Diabetes, together with its serious complications ranks as the nation’s third leading cause of death, surpassed only by heart disease and cancer.
6. In late 1997, the chambers inside the pyramid of the pharaoh Menkaure at Giza were closed to visitors for cleaning and repair because moisture exhales by tourist had raised the humidity within them to such levels that salt from the stone was crystallizing and fungus was growing on the walls.作者: coldsummer 时间: 2010-11-4 22:12
7. As its sales of computer products have surpassed those of measuring instruments, the company has become increasingly willing to compete for the mass market sales
8. The widely accepted big bang theory holds that the universe began in an explosive instant ten to twenty billion years ago and has been expanding ever since.
11. There are several ways to build solid walls using just mud or clay, but the most extensively used method has been to form the mud or clay into bricks, and after some preliminary drying or sun drying, to lay them in the wall in mud mortar.
12. Rising inventories, if not accompanied by corresponding increases in sales, can lead to production cutbacks that would hamper economic growth.
13. A surge in new home sales and a drop in weekly unemployment claims suggest that the economy might not be as weak as some analysts previously thought.作者: coldsummer 时间: 2010-11-4 22:13
14． Sunspots, vortices of gas associated with strong electromagnetic activity, are visible as dark spots o nthe surface of the Sun but have never been sighted on the Sun’s poles or Equator.
19. The Iroquois were primarily planters, although they supplemented their cultivation of maize, squash, and beans with fishing and hunting.
23. Once designed with its weight concentrated in a metal center, the discus used in track competition is now lined with lead around the perimeter, thereby improving stability in flight and resulting in longer throws.
33. Because an oversupply of computer chips has sent prices plunging, the manufacturer has announced that it will cut production by closing its factories for two days a month.作者: coldsummer 时间: 2010-11-4 22:13
36. Dressed as a man and using the name Robert Shurtleff, Deborah Sampson, the first woman to draw a soldier’s pension, joined the Continental Army in 1782 at the age of 22, was injured three times, and was discharged in 1783 because she had become too ill to serve.
42． Scientists have recently discovered what could be the largest and oldest living organism on Earth, a giant fungus that is an interwoven filigree of mushrooms and root like tentacles spawned by a single fertilized spore some 10,000 years ago and extending for more than 30 acres in the soil of a Michigan forest.
43．Laos has a land area comparable to that of Great Britain but a population of only four million people, many of whom are members of hill tribes ensconced in the virtually inaccessible mountain valleys of the north.
46．In ancient Thailand, much of the local artisans' creative energy was expended on the creation of Buddha images and on construction and decoration of the temples in which they were enshrined.作者: coldsummer 时间: 2010-11-4 22:13
47．Five fledgling sea eagles left their nests in western Scotland this summer, bringing to 34 the number of wild birds successfully raised since transplants from Norway began in 1975.
48．In 1713, Alexander Pope began his translation of the lliad, a work that took him seven years to complete and that literary critic Samuel Johnson, Pope's contemporary, pronounced the greatest translation in any language
50．According to some analysts, the gains in the stock market reflect growing confidence that economy will avoid the recession that many had feared earlier in the year and instead come in for a "soft landing", followed by a gradual increase in business activity.
51．A new study suggests that the conversational pace of everyday life may be so brisk it hampers the ability of some children for distinguishing discrete sounds and words an, the result is, to make sense of speech.作者: coldsummer 时间: 2010-11-4 22:14
53．The nineteenth-cy chemist Humphrey Davy presented the results of his early experiments in his "Essay on Heat and Light", a critique of all chemistry since Robert Boyle as well as a vision of a new chemistry that Davy hoped to found.
58．A leading figure in the Scottish Enlightenment, Adam Smith wrote two major books that are to democratic capitalism what Marx's Das Capital is to socialism.
59．The Olympic Games helped to keep peace among the pugnacious states of the Greek world, for a sacred truce was proclaimed during the month of the festival.
60．While all states face similar industrial waste problems, the predominant industries and the regulatory environment of each state obviously determine.作者: coldsummer 时间: 2010-11-4 22:14
63．The yield of natural gas from Norway's Troll gas field is expected to increase annually until the year 2005 and then to stabilize at six billion cubic feet a day, an extraction rate that will allow at least 50 years' production
67．Affording strategic proximity to the Strait of Gibraltar, Morocco was also of interest to the French throughout the first half of the twentieth century because they assumed that without it their grip on Algeria would never be secure.
68．The first trenches cut into a 500-acre site at Tell Hamoukar, Syria, have yielded strong evidence that centrally administered complex societies in northern regions of the Middle East arose simultaneously with but in dependently of the more celebrated city-states of southern Mesopotamia, in what is now southern Iraq.
70．His studies f ice-polished rocks in his Alpine homeland, for outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in which great ice sheets existed in what are now temperate areas.作者: coldsummer 时间: 2010-11-4 22:14
72．More and more in recent years, cities are stressing the arts as a means to greater economic development and investing millions of dollars in cultural activities, despite strained municipal budgets and fading federal support.
73．Combining enormous physical strength with higher intelligence, the Neanderthals appear to have been equipped to face any obstacle the environment could put in their path, but their relatively sudden disappearance during the Paleolithic era indicates that an inability to adapt to some environmental change led to their extinction.
74．A 1972 agreement between Canada and the United States reduced the amount of phosphates that municipalities are allowed to dump
76．Retailers reported moderate gains in their November sales, as much because their sales a year earlier had been so bad as because shoppers were getting a head start on buying their holiday gifts.
78．Fossils of the arm of a sloth, found in Puerto Rico in 1991, have been dated at 34 million years old, making the sloth the earliest known mammal on the Greater Antilles Islands.作者: coldsummer 时间: 2010-11-4 22:14
79．Defense attorneys have occasionally argues that their clients' misconduct stemmed from a reaction to something ingested, but if criminal or delinquent behavior is attributed to an allergy to some food, the perpetrators are in effect told that they are not responsible for their actions.
80．A report by the American Academy for the advancement of Science has concluded that many of the current uncontrolled dioxins to which North Americans are exposed come from the incineration of wastes.
83．In 2000, a mere two dozen products accounted for half the increase in spending on prescription drugs, a phenomenon that is explained not just by the fact that drugs are becoming more expensive but also by the fact that doctors are writing many more prescriptions for higher-cost drugs.
85．Salt deposits and moisture threaten to destroy the Mohenjo-Daro excavation in Pakistan, the site of an ancient civilization that flourished at the same time as the civilizations in the Nile Delta and the river valleys of the Tigris and Euphrates.作者: coldsummer 时间: 2010-11-4 22:15
89．Dirt roads may evoke the bucolic simplicity of another century, but financially strained townships point out that dirt roads cost twice as much to maintain as paved roads do.
91．Nobody knows exactly how many languages there are in the world, partly because of the difficulty of distinguishing between a language and the sublanguages or dialects within it, with those who have tried to count typically have found about five thousand.
93．Heating-oil prices are expected to be higher this year than last because refiners are paying about $5 a barrel more for crude oil than they were last year.
95．The peaks of a mountain range, acting like rocks in a streambed, produce ripples in the air flowing over them; the resulting flow pattern, with crests and troughs that remain stationary although the air that forms them is moving rapidly, is
98．Even though Clovis points, spear points with longitudinal grooves chipped onto their faces, have been found all over North America, they are named for the New Mexico site where they were first discovered in 1932.作者: coldsummer 时间: 2010-11-4 22:15
99．Ranked as one of the most important of Europe's young playwrights, Franz Xaver Kroetz has written 40 plays; his works - translated into more than 30 languages - are produced more often than those of any other contemporary German dramatist.
102．As rainfall began to decrease in the Southwest about the middle of the twelfth century, most of the Monument Valley Anasazi abandoned their homes to join other clans whose access to water was less limited.
103．Yellow jackets number among the 900 or so species of the world social wasps, wasps that live in a highly cooperative and organized society consisting almost entirely of females - the queen and her sterile female workers
107．Originally developed for detecting air pollutants, a technique called proton-induced X-ray emission, which can quickly analyze the chemical elements in almost any substance without destroying it, is finding uses in medicine, archaeology, and criminology.作者: coldsummer 时间: 2010-11-4 22:15
108．Authoritative parents are more likely than permissive parents to have children who as adolescents are self-confident, high in self-esteem, and responsibly independent.
109．Among the objects found in the excavated temple were small terra-cotta effigies left by supplicants hwo were either asking the goddess Bona Dea's aid in healing physical and mental ills or thanking her for such help.
111．Construction of the Roman Colosseum, which was officially known as the Flavian Amphitheater, began in A.D. 69, during the reign of Vespasian, and was completed a decade later, during the reign of Titus, who opened the Colosseum with a one-hundred-day cycle of religious pageants, gladiatorial games, and spectacles.
113．Because the new maritime code provides that even tiny islets can be the basis for claims to the fisheries and oil fields of large sea areas, it has already stimulated international disputes over uninhabited islands.
116．Mauritius was British colony for almost 200 years, but except in the domains of administration and teaching, the English language was never really spoken on the island.作者: coldsummer 时间: 2010-11-4 22:16
118．The World Wildlife Fund has declared that global warming, a phenomenon that most scientists agree is caused by human beings' burning of fossil fuels, will create havoc among migratory birds by altering the environment in ways harmful to their habitats.
119．New theories propose that catastrophic impacts of asteroids and comets may have caused reversals in the Earth's magnetic field, the onset of ice ages, the splitting apart of continents 80 million years ago, and great volcanic eruptions.
122．A wildlife expert predicts that the reintroduction of the caribou into northern Minnesota will fail if the density of the timber wolf population in that region is greater than one wolf for every 39 square miles.
123．Less successful after she emigrated to New York than she had been in her native Germany, photographer Lotte Jacobi nevertheless earned a small group of discerning admirers, and her photographs were eventually exhibited in prestigious galleries across the United States.
124．Found throughout Central and South America, the sloth hangs from trees by its long rubbery limbs, sleeping 15 hours a day and moving so infrequently that two species of algae grow on its coat and between its toes.作者: coldsummer 时间: 2010-11-4 22:16
126．The use of lie detectors is based on the assumption that lying produces emotional reactions in an individual that, in turn, create unconscious physiological responses.
128．Australian embryologists have found evidence to suggest that the elephant is descended from an aquatic animal and that its trunk originally evolved as a kind of snorkel.
131．Over 75 percent of the energy produced in France derives from nuclear power, whereas nuclear power accounts fro just over 33 percent of the energy produced in Germany.
133．Last week local shrimpers held a news conference to take some credit for the resurgence of the rare Kemp's ridley turtle, saying that their compliance with laws requiring turtle-excluder devices on shrimp nets is protecting adult sea turtles.
134．Recently implemented "shift-work equations" based on studies of the human sleep cycle have reduced sickness, sleeping on the job, and fatigue among shift workers while raising production efficiency in various industries.作者: coldsummer 时间: 2010-11-4 22:16
136．Whereas in mammals the tiny tubes that convey nutrients to bone cells are arrayed in parallel lines, in birds the tubes form a random pattern.
137．Joachim Raff and Giacomo Meyerbeer are examples of the kind of composer who receives popular acclaim while living, but whose reputation declines after death and never regains its former status.
140.Rock samples taken from the remains of an asteroid about twice the size of the 6-mile-wide asteroid that eradicated the dinosaurs have been dated at 3.47 billion years old and thus are evidence of the earliest known asteroid impact on Earth.
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