It is commonly thought that this happens because

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Scientists typically do their most creative work before the age of forty. It is commonly thought that this happens because aging by itself brings about a loss of creative capacity. However, studies show that a disproportionately large number of the scientists who produce highly creative work beyond the age of forty entered their field at an older age than is usual. Since by the age of forty the large majority of scientists have been working in their field for at least fifteen years, the studies’ finding strongly suggests that the real reason why scientists over forty rarely produce highly creative work is not that they have simply aged but rather that they generally have spent too long in a given field. In the argument given, the two portions in boldface play which of the following roles? A. The first is the position that the argument as a whole opposes; the second is an objection that has been raised against a position defended in the argument. B. The first is a claim that has been advanced in support of a position that the argument opposes; the second is a finding that has been used in support of that position. C. The first is an explanation that the argument challenges; the second is a finding that has been used in support of that explanation. D. The first is an explanation that the argument challenges; the second is a finding on which that challenge is based. E. The first is an explanation that the argument defends; the second is a finding that has been used to challenge that explanation. Answer: ------------------------------------------------------------------------------------------------------------ Q21: In Teruvia, the quantity of rice produced per year is currently just large enough to satisfy domestic demand. Teruvia’s total rice acreage will not be expanded in the foreseeable future, nor will rice yields per acre increase appreciably. Teruvia’s population, however, will be increasing significantly for years to come. Clearly, therefore, Teruvia will soon have to begin importing rice. Which of the following is an assumption on which the argument depends? ------------------------------------------------------------------------------------------------------------ Q22 to Q25: 25
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Most pre-1990 literature on busi- nesses’ use of information technology (IT)—defined as any form of computer- Line based information system—focused on (5) spectacular IT successes and reflected a general optimism concerning IT’s poten- tial as a resource for creating competitive advantage. But toward the end of the 1980’s, some economists spoke of a (10) “productivity paradox”: despite huge IT investments, most notably in the service sectors, productivity stagnated. In the retail industry, for example, in which IT had been widely adopted during the (15) 1980’s, productivity (average output per
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