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52        WEAKEN        No major agricultural crop matures from seed in as little as forty-five days.Synthetic can be reapplied as the crop grows.        plowing rye into the soil can play no part in dffective weed control        显示因果关系的资料不准确(D)allow for the possibility of combining the two weed-control methods it mentions        rye:黑麦 sow:播（种）plow :犁 residue:残留物，剩余 broad-leaved:阔叶的 synthetic:物质）合成的；人造的 herbicide:除草剂

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53        SUPPORT        Summit Computers is known throughout the industry for retaining its emplyees        Summit credits its success in retainning employees to its informal, nonhierarchical work environment        将原文的推理中的GAP填补(B)A hierarchical work environment hinders the cooperative exchange of ieas that computer industry employees consider necessary for their work

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55        SUPPORT        Premiums for the policy must be low enough to attract customers        Company X is concerned that the income from the poicies would not be sufficient to pay for the chlaims that would be made        将原文的推理中的GAP填补(A)Attracing middle-aged customers unlikely to submit claims for benefits for many years

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56        MUST BE TURE        The fewer restrictions there are on the advertising of legal services the more lawyers there are who advertise their sevices, and the lawyers who advertise a specific service usually charge less for that service than the lawyers wo do not advertise        if the state removes any of its current restrictions, such as the one against advertisements that do not specify fee arrangements,overallconsumer legal costs will be lowerthan if the state retains its current restrictions        是原文某句话的重写或逆否命题或某几句话的结合，特别是原文有充分必要推理的。特别注意数量上和可能性上的词的差别©if the restriciton against advertisements that do not specify fee arrangements is removed, more lawyers will advertise their sevices.

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58        ASSUMPTION        most universities retain the royalties from faculty members'invetions, the faculty members retain the royalties from books and articles they write.        faculty members should retain the royalties from the educational computer softwear they develop        推理中有概念 GAP（特别是答案出现新元素），则答案填补这个GAP（通常新元素必出现）(E)In terms of the criteria used to award royalties, educational software programs are more nearly comparable to books and articles than to inventions.

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59        METHOD OF REASONING        In order to withstand tidal currents ,juvenile horseshoe crabs frequently burrow in the sand .Such burrowing discourages barnacles from clinging to their shells .When full grown ,the crabs can readily withstand tidal currents withoutburrowing ,and thus they acquire substantial populations of barnacles.        in areas where tidal currents are very weak, juvenile horseshoe crabs are found not to have significant barnacle populations,even though they seldom burrow        排除出现原文没说过的东西的选项，包括新元素，极端化或夸张的元素，相反的元素，颠倒的元素(E)until they are fully  grown, horseshoe crabs shed their shells and grow new ones several times a year.        barnacle:附着甲壳动物 significant:重要的；显著的 substantial:很重要的；很可观的，大量的；很有价值的 acquire:（为自己）买到，获得（资产，物品）cling:人，动物）黏着，缠着，紧紧握着 burrow:掘穴, 打洞 crab:蟹；螃蟹 juvenile:青少年（有关）的

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60        WEAKEN        the parasite cannot travel to a new generation of red blood cells        any fever that develops in a person more than 120days after that person has moved to a malaria-free region is not due to the malarial parasite.        用结论的具体性去区分有关无关，并结合是否该答案使作者再考虑他的观点或迫使作者做出反应或原文该前提能证明该结论(D)in some cases(注意关键词） the parasite that causes malaria fever travels to cells of the spleen, which are less frequently eliminated from a person's body than are red blood cells.

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61        ASSUMPTION        Neither a rising standard of living nor balaced trade establisheds a country;s ablility to compete in the international marketplace        Both are required simultaneously since standards of living can rise because of growing trade deficits and trade can be balanced by means of a decline in a country's standard of living.        或充分条件一定能推出必要条件，或排除充分条件推不出必要条件的可能(A) balance its trade while its standard of living rises

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62        METHOD OF REASONING        algae whose habitat is river water grow best in slow-moving water the amount of algae per unit of water generally increases when there has been little rain        following a period of extreme drought,algae levels are low even in very slow moving river water        选项描述了原文的结构，每个元素都必须在原文出现过(D)Australian rivers dry up completely for short intervals in periods of extreme drought

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63        WEAKEN        When hypnotized subjects are told that they are deaf and are then asked whether they can hear the hypnotist, they rely NO.        selves of hypnotized subjects are dissociated into separate parts, and that the part that is deaf is dissociated from the part that replies        直接反对现象本身，形成weaken（A)why does the part that replies not answer,yes