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GWD
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The primary purpose of the passage is to
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GWD
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The ancient Nubians inhabited an area in which typhus occurs, yet surprisingly few of their skeletons show the usual evidence of this disease. The skeletons do show deposits of tetracycline, an antibiotic produced by a bacterium common in Nubian soil. This bacterium can flourish on the dried grain used for making two staples of the Nubian diet, beer and bread. Thus, tetracycline in their food probably explains the low incidence of typhus among ancient Nubians.Which of the following is an assumption on which the argument relies?
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GWD
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Some scientists contend that many species of dinosaur had a metabolism more like a warm-blooded mammal's than a cold-blooded reptile's.
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GWD
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Which of the following most logically completes the passage?Mastitis is an infection of the udder in cows that, although not dangerous, causes them to give poor-quality milk. Most cases of mastitis are caused by the bacterium Staphylococcus aureus, against which antibiotics are ineffective. However, a related bacterium, Staphylococcus simulans, quickly clears up even severe infections of S. aureus simply by displacing the bacteria. S. simulans is nevertheless unlikely to become the preferred treatment for cases of mastitis, since ______.
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GWD
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According to the passage, until recently zoologists believed which of the following about all phocid mothers?
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GWD PREP08 Test 1
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Scientists have dated sharp-edged flakes of stone found in the fine-grained sediments of a dry riverbed in the Afar region of Ethiopia to between 2.52 and 2.60 million years ago, pushing back by more than 150,000 years the earliest date when it is known that humans made stone tools.
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GWD
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A survey of entrepreneurs who started companies last year shows that while virtually all did substantial preparatory research and planning, only half used that work to produce a formal business plan. Since, on average, the entrepreneurs without formal plans secured the capital they needed in half the time of those with plans, these survey results indicate that, in general, formal plans did not help the entrepreneurs who produced them to secure the capital they needed.Which of the following, if true, most seriously weakens the argument?
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GWD
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The author of the passage mentions ringed seals most probably in order to
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GWD PREP08 Test 2
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Currently 26 billion barrels a year, world consumption of oil is rising at a rate of 2 percent annually.
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GWD PREP2012
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The author of the passage would be most likely to agree with which of the following statements about the explanation outlined in highlight text?
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OG16 GWD
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Since it has become known that several of a bank's top executives have been buying shares in their own bank, the bank's depositors, who had been worried by rumors that the bank faced impending financial collapse, have been greatly relieved. They reason that since top executives evidently have faith in the bank's financial soundness, those worrisome rumors must be false. They might well be overoptimistic, however, since corporate executives have sometimes bought shares in their own company in a calculated attempt to dispel negative rumors about the company's health.In the argument given, the two boldfaced portions play which of the following roles?
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GWD PREP08 Test 1
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Turning away from literary realism to write romantic stories about the peasant life and landscape of northern Sweden, in 1909 Selma Lagerlöf was the novelist who became the first woman and was also the first Swedish writer to win the Nobel Prize for Literature.
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GWD
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In the past, most children who went sledding in the winter snow in Verland used wooden sleds with runners and steering bars. Ten years ago, smooth plastic sleds became popular; they go faster than wooden sleds but are harder to steer and slow. The concern that plastic sleds are more dangerous is clearly borne out by the fact that the number of children injured while sledding was much higher last winter than it was ten years ago.Which of the following, if true in Verland, most seriously undermines the force of the evidence cited?
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GWD PREP2012
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Which of the following can be inferred from the passage about the Hopis' geographic situation between 1680 and 1880?
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GWD PREP08 Test 2
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For the farmer who takes care to keep them cool, providing them with high-energy feed, and milking them regularly, Holstein cows are producing an average of 2,275 gallons of milk each per year.
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GWD
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One of the limiting factors in human physical performance is the amount of oxygen that is absorbed by the muscles from the bloodstream. Accordingly, entrepreneurs have begun selling at gymnasiums and health clubs bottles of drinking water, labeled "SuperOXY," that has extra oxygen dissolved in the water. Such water would be useless in improving physical performance, however, since the only way to get oxygen into the bloodstream so that it can be absorbed by the muscles is through the lungs.Which of the following, if true, would serve the same function in the argument as the statement in boldface?
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GWD PREP2012
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The passage is primarily concerned with
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GWD PREP08 Test 2
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Humans have been damaging the environment for centuries by overcutting trees and farming too intensively, and though some protective measures, like the establishment of national forests and wildlife sanctuaries, having been taken decades ago, great increases in population and in the intensity of industrialization are causing a worldwide ecological crisis.
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GWD
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Because it was long thought that few people would watch lengthy televised political messages, most televised political advertisements, like commercial advertisements, took the form of short messages. Last year, however, one candidate produced a half-hour-long advertisement. During the half hour the advertisement was aired, a substantial portion of the viewing public tuned into the advertisement. Clearly, then, many more people are interested in watching lengthy televised political messages than was previously thought.Which of the following is an assumption on which the argument depends?
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GWD
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The primary purpose of the passage is to
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