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1/Background: business firms should realize that avoiding social responsibility leads to erosion of power. Law: those firms who do not use their power in consistent with their responsibility will lose their power. Premise: a firm wishes to retain its power must act responsibility. Prephrase: some business firms that act responsibly, but loses its power and bankrupt at last, while some other firms that act irresponsibly still retains power and is prospers. B A: government institutions is irrelevant to the business firms B: even an institution acts irresponsibly, the public relations programs can help to cover the activities, in this way, an institution could retain power even it acts irresponsibly. It weakens the argument. C: whether the power erodes slowly or not, anyway, if the institution act irresponsibly, its power erodes, support the argument. D: the argument acknowledges the wish, to retain power as long as they can, of institutions. E: the argument is a sufficient condition, the answer is a necessary condition. 2/Background: most of world’s solar-power generators are manufactured by Americans. Most of the America-made solar-power generators are exported to Europe. The European manufactures commence to capture European market. Premise: the US government encourages the civil use of solar power, in order to maintain significant production levels. Prephrase: the demand within US can not account to that in Europe. The domestic market of energy has little room for solar power. C A: the argument is about domestic demand, not output, irrelevant. B: if solar-power generators have low efficiency, less people will buy them, weaken the argument. C: when the domestic initiatives increase, the US manufacturers are able to enlarge the market share, as the European manufacturers do in Europe. Support the argument. D: Europe, irrelevant. E: weaken the argument. 3/Background: the high level of certain vitamins and minerals in the blood stream makes the lung function better. The lung function of smokers is much worse than that of non-smokers. Premise: to improve the lung function of lung function, the smokers need to increase their intake of helpful vitamins and minerals. Prephrase: the digest system of smokers is good enough to support the vitamins and minerals being absorbed by smokers.
E A: It’s evidence of bad lung function of smokers, not the evidence to the argument. B: it merely repeats the statement. C: to smokers, not general people. D: it has nothing to do with stopping smoking. E: support 4/Background: because of collision, comet fragments entered Jupiter’s atmosphere. Traces of sulfur were found in the outer atmosphere after the fragment’s entry. Premise: as the comet fragments did not contain sulfur, many astronomers believeed the cloud layer below outer atmosphere did contain sulfur. There must be some fragments entering the cloud layer, which made the sulfur speed into the outer space. Prephrase: the 2 portions together can make the argument sufficient. E A:if both are explanation, where is the conclusion? B: not against C: not against D: not against E: the 2 portions together are sufficient to the argument. 5/Background: it is possible to extract uranium from seawater, but the cost is much higher than the current price of uranium on world market. Premise: only when the cost of extracting uranium from seawater is reduced, can the technology be commercially viable. Prephrase: the quantity of uranium which could be extracted from seawater is much more than that stored in mines, as the decline of uranium stored in mines, the price of uranium is increasingly rising. A A: while the uranium in mines is depleted rapidly, the price will increase, which it is easier for the cost of extracting uranium from seawater to reach. B: where to use the uranium is irrelevant C: not sufficient. D: when the uranium in mine is used up, extracting from seawater will be the only way to continue, then there is no need to reduce the cost. E: freshwater, irrelevant |
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