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Nuclear fusion is the force that powers the Sun, the stars, and hydrogen bombs, merging the nuclei of atoms and not splitting them apart, as in nuclear reactors.
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The Federal Reserve Board's reduction of interest rates on loans to financial institutions is both an acknowledgment of past economic trends and an effort to influence their future direction.
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It has been estimated that the annual cost to the United States of illiteracy in lost industrial output and tax revenues is at least $20 billion a year.
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More than 30 years ago Dr. Barbara McClintock, the Nobel Prize winner, reported that genes can "jump," as pearls moving mysteriously from one necklace to another.
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PREP2012
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In Holland, a larger percentage of the gross national product is spent on defense of their coasts from rising seas than is spent on military defense in the United States.
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Canadian scientists have calculated that one human being should be struck every nine years by a meteorite, while each year 16 buildings can be expected to sustain damage from such objects.
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As a result of medical advances, many people that might at one time have died as children of such infections as diphtheria, pneumonia, or rheumatic fever now live well into old age.
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Some bat caves,like honeybee hives, have residents that take on different duties such as defending the entrance, acting as sentinels and to sound a warning at the approach of danger, and scouting outside the cave for new food and roosting sites.
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OG18-语文分册
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The voluminous personal papers of Thomas Alva Edison reveal that his inventions typically sprang to life not in a flash of inspiration but evolved slowly from previous works.
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The rising of costs of data-processing operations at many financial institutions has created a growing opportunity for independent companies to provide these services more efficiently and at lower cost.
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William H. Johnson's artistic debt to Scandinavia is evident in paintings that range from sensitive portraits of citizens in his wife's Danish home, kerteminde, and awe-inspiring views of fjords and mountain peaks in the western and northern regions of Norway.
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It is well known in the supermarket industry that how items are placed on shelves and the frequency of inventory turnovers can be crucial to profits.
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Iguanas have been an important food source in Latin America since prehistoric times, and it is still prized as a game animal by the campesinos,who typically cook the meat in a heavily spiced stew.
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OG18-语文分册
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Consumers may not think of household cleaning products to be hazardous substances, but many of them can be harmful to health, especially if they are used improperly.
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Eating saltwater fish may significantly reduce the risk of heart attacks and also aid for sufferers of rheumatoid arthritis and asthma, according to three research studies published in the New England Journal of Medicine.
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PREP07 Test 1 OG18-语文分册 OG19-语文分册
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Thomas Eakins' powerful style and his choices of subject-the advances in modern surgery, the discipline of sport,the strains of individuals in tension with society or even with themselves-was as disturbing to his own time as it is compelling for ours.
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What was as remarkable as the development of the compact disc has been the use of the new technology to revitalize, in better sound than was ever before possible, some of the classic recorded performances of the pre-LP era.
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Domestic automobile manufacturers have invested millions of dollars into research to develop cars more gasoline-efficient even than presently on the road.
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In developing new facilities for the incineration of solid wastes,we must avoid the danger of shifting environmental problems from landfills polluting the water to polluting the air with incinerators.
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The winds that howl across the Great Plains not only blow away valuable topsoil,thereby reducing the potential crop yield of a tract of land, and also damage or destroy young plants.
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