【专题 GMAT逻辑题】
Which of the following mostlogically completes the argument? Sviatovinis a medieval Moringian text whose author and exact date of composition areunknown. However, the events in the life of Prince Sviatov that the textdescribes occurred in 1165, and in the diagram of Sviatov’s family thataccompanies the text his father, who died in 1167, is identified as stillliving. Thus Sviatovin must have been written between 1165 and 1167, assuringthat.
A. thelife of Prince Sviatov is not the subject of any other medieval Moringian texts
B. theauthor of Sviatovin intended it to provide as accurate a report about PrinceSviatov's exploits as possible
C. thediagram accurately represents the composition of Sviatov's family at thetimeSviatovin was written
D.Sviatovin is the earliest Moringian text whose composition can be dated towithin a few years
E Sviatovin was not written by Sviatov's father himself
有消息称于北苏伯利尔湖无人定居的森林岛屿上，岛中一个湖泊附近的泥土被检出含有有毒的化学成分。这种有毒的化学品包括托克斯芬，一种已经禁止的、曾为棉花防害而制造与使用的毒药。但托克斯芬的制造与使用并不存在于加拿大或美国北部的附近区域，而是在美国的南部。这个岛上没有出现有毒排放物。这个岛屿的湖已被足够地抬高以致来自于苏伯利尔湖的水不会汇入岛内。
如果上述假设正确，则强有力地支持下面哪一个假设?
近期一项研究调查表明，对经常锻炼的人来说，同时参与多种体育项目的锻炼要比只参与一种体育锻炼的效果好。因为单一项目只能使人的局部肌肉得到锻炼，而多种项目可以使人的肌肉全面得到锻炼，且后者消耗更多的卡路里。
如果以下哪项陈述为真，可以最有力的加强上述论证?
如果不设法提高低收入者的收入，社会就不稳定；假如不让民营经济投资者获得回报，经济就上不去。面对收入与分配的两难境地，倡导“效率优先，兼顾公平”是正确的。如果听信“公平优先，兼顾效率”的主张，我国的经济就会回到“既无效率，又不公平”的年代。
以下哪项陈述是上述论证所依赖的假设？
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