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PREP07 Test 2
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Even though her career was cut short when she was in her prime and the fifteen recordings she made were disappointing artistically as well as technically, Olive Fremstad (1871-1951) has never been entirely forgotten by opera aficionados.
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PREP07 Test 2
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Officials in Atlanta's public schools, as do many districts across the United States, have eliminated recess in the elementary grades, calling it a waste of time that would be better spent on academics.
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PREP07 Test 2
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Frederick Winslow Taylor, a machinist and engineer who worked in the early twentieth century, believed that the productivity of a job could be improved if one were to separate the components of a task into its individual motions and found the best way to perform each motion, then redesign the job so that each motion could be done as efficiently as possible.
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PREP07 Test 2
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The parachutelike membranes of Africa's scaly-tailed flying squirrels differ from those of the flying squirrels in the family Sciuridae because they are attached to a cartilage rod at the elbow instead of the wrist.
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PREP07 Test 2
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2001 proved to be the automaker's first losing year since 1992, when the company had lost $7.4 billion, which was primarily because of almost $7 billion in accounting charges.
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PREP07 Test 2
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As with those of humans, the DNA of grape plants contains sites where certain unique sequences of nucleotides are repeated over and over.
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PREP07 Test 2
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Unlike psychiatrists, who are trained as medical doctors, psychologists have historically been forbidden from prescribing their patients drugs, but in 2002 New Mexico began to grant the privilege of prescribing to licensed, doctoral level psychologists who complete an additional training and certification program.
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PREP07 Test 2
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Scientists have found new evidence of people initially registering emotions like sadness or anger in much the same way as heartburn--by monitoring what's going on within their bodies.
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PREP07 Test 2
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Changes in the composition of the light of a supernova--an exploding star--reveals not only the chemical elements in the explosion but also the speed of expanding the outer layers of stellar gas.
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PREP07 Test 2
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Ranked among great mathematical scientists such as Archimedes, Kepler, and Newton, Abu Ali al-Hasan ibn al-Haytham, who was born in Iraq in 965 C.E., had experimented extensively with light and vision, laying the foundation for modern optics and also the notion of science being based on experiment as well as on philosophical arguments.
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PREP07 Test 2 GWD
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The army cutworm moth is a critical source of fat for as many as a third of Yellowstone National Park's grizzly bears; they overturn rocks to find them and consuming as many as 40,000 per bear in a single day.
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PREP07 Test 2
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Turtles, as with other reptiles, can endure long fasts because they can survive on weekly or even monthly feedings; however, when food is readily available, they may eat frequently and grow very fat.
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PREP07 Test 2
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The 151 member governments of the World Bank are expected to increase the bank's funding by $75 billion, though some United States legislators cite an obstacle to congressional passage being the concern that the bank's loans will help foreign producers compete with American businesses.
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PREP07 Test 2
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Whereas high speeds generally cannot be achieved by ramjets without their initially being assisted by a rocket, a scramjet, or supersonic combustion ramjet, can attain high speeds by reducing airflow compression at the entrance of the engine and letting air pass through at supersonic speeds.
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PREP07 Test 2
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Taste buds are onion-shaped structures with between 50 and 100 taste cells, each of them has fingerlike projections poking through the opening located at the top of the taste bud called the taste pore.
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PREP07 Test 2
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Meteor showers and individual streaks of light that flash across the sky every night are generated when tiny flecks of celestial detritus, often no larger than grains of sand or of pebbles, burn up speeding through the atmosphere.
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PREP07 Test 2 OG18-语文分册 OG19-语文分册
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The gyrfalcon, an Arctic bird of prey, has survived a close brush with extinction; its numbers are now five times greater than when the use of DDT was sharply restricted in the early 1970's.
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PREP07 Test 2
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Hydrocarbons, with which fruit flies perfume themselves in species-specific blends, are known to be important in courtship, and apparently this assists flies that taste the hydrocarbons on prospective mates to distinguish their own species from that of others.
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PREP08 Test 1
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Experts estimate that ten times as much petroleum exists in sources like tar sands, heavy oil, and perhaps even in shale than in conventional reservoirs.
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PREP08 Test 1
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For at least two decades or more previous to when the Venetian artist Giovanni Battista Tiepolo died in 1770, he was the most admired painter in Italy.
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