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GWD PREP08 Test 2
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The state has proposed new rules that would set minimum staffing levels for nurses, rules intended to ensure that at least one nurse is assigned for every four patients put through triage in a hospital emergency room.
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GWD PREP08 Test 2
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The health benefits of tea have been the subject of much research; in addition to its possibilities for preventing and inhibiting some forms of cancer, the brewed leaves of Camellia sinensis may also play a role in reducing the risk of heart disease and stroke.
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GWD PREP08 Test 2
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Since February, the Federal Reserve has raised its short-term interest rate target five times, and because of the economy's continued strength, analysts have been predicting for weeks that the target will be raised again in November.
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GWD PREP08 Test 2
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There are no legal limits, as there are for cod and haddock, on the size of monkfish that can be caught, a circumstance that contributes to their depletion through overfishing.
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GWD OG19-语文分册 OG20-语文分册
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Heirloom tomatoes, grown from seeds saved from the previous year, only look less appetizing than their round and red supermarket cousins, often green and striped, or have plenty of bumps and bruises, but are more flavorful.
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PREP07 Test 2 GWD
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Researchers in Germany have unearthed 400,000-year-old wooden spears from what it appears was an ancient lakeshore hunting ground as stunning evidence of human ancestors who systematically hunted big game much earlier than believed.
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GWD PREP08 Test 1
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While studying the genetic makeup of corn, a new class of mutant genes was discovered by Barbara McClintock, a discovery which led to greater understanding of cell differentiation.
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GWD OG18-语文分册 OG19-语文分册 OG20-语文分册
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Clouds are formed from the evaporation of the oceans' water that is warmed by the Sun and rises high into the atmosphere, condensing in tiny droplets on minute particles of dust.
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GWD OG18-语文分册 OG19-语文分册 OG20-语文分册
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Like ants, termites have an elaborate social structure in which a few individuals reproduce and the rest are serving the colony by tending juveniles, gathering food, building the nest, or they battle intruders.
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GWD
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According to some botanists, invasive plants are the second most serious threat, after habitat loss, to native species of plants and animals and to the maintenance of biologically diverse ecosystems.
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GWD
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Drawing on her roots in a society that has a strong tradition of story-telling and oral renditions of the past, Indian writer Suniti Namjoshi incorporates many types of literature into her writing: including historical texts, legends, and even nursery rhymes from both Indian as well as European sources.
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OG12 OG15 OG16 OG17 GWD OG18 OG19 OG20 OG2022
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Nobody knows exactly how many languages there are in the world, partly because of the difficulty of distinguishing between a language and the sub-languages or dialects within it, but those who have tried to count typically have found about five thousand.
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GWD
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Discussion of greenhouse effects has usually focused on whether the earth would warm and by how much, but climatologists have indicated all along that the most obvious effects, and those that would have the largest impact on people, would be extremes of temperature, precipitation, and storminess.
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GWD
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Recent findings lend strong support to the theory that a black hole lies at the center of the Milky Way and of many of the 100 billion other galaxies estimated to exist in the universe.
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GWD
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New items developed for automobiles in the 1997 model year included a safer air bag, which, unlike previous air bags, eliminated the possibility that a burst of smoke would appear when the bag inflated, and making an already terrified passenger think the car was on fire.
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GWD
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The reasons for yesterday's sharp rise in the stock market were much the same as that behind last week's rally: a surge in the economy to a 5.6 percent annual growth rate and improved corporate earnings balanced by the lack of signs of inflationary pressure.
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GWD
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Responding to the public's fascination with-and sometimes undue alarm over-possible threats from asteroids, a scale developed by astronomers rates the likelihood that a particular asteroid or comet may collide with Earth.
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PREP07 Test 2 OG18-语文分册 OG19-语文分册 OG20-语文分册
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By offering lower prices and a menu of personal communications options,such as caller identification and voice mail,the new telecommunications company has not only captured customers from other phone companies but also forced them to offer competitive prices.
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Scientists have observed large concentrations of heavy metal deposits in the upper twenty centimeters of Baltic Sea sediments,which are consistent with the growth of industrial activity there.
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PREP2012
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If the proposed expenditures for gathering information abroad are reduced even further, international news reports have been and will continue to diminish in number and quality.
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