标题: 新人问题 关于12版OG45的解释以及断桥和他因到底是什么理解 [打印本页] 作者: 风行稚 时间: 2012-10-16 23:24 标题: 新人问题 关于12版OG45的解释以及断桥和他因到底是什么理解 如题 45．Some anthropologists study modern-day societies offoragers in an effort to learn about our ancientancestors who were also foragers. A flaw in thisstrategy is that forager societies are extremely varied.Indeed, any forager society with whichanthropologistsare familiar has had considerable contact withmodern, non-forager societies.
Which of the following, if true, would most weaken the criticism made above of the anthropologists' strategy?
(A)All forager societies throughout history have had a number of important features in common that are absent from other types of societies.
(B)Most ancient forager societies either dissolved or made a transition to another way of life.
(0All anthropologists study one kind or another of modern-day society.
(D)Many anthropologists who study modern-day forager societies do not draw inferences about ancient societies on the basis of their studies.
(E)Even those modern-day forager societies that have not had significant contact with modern societies are importantly different from ancient forager societies. 看过答案逻辑链算是搞清楚了，但是下下来的一份笔记说选A的思路是“他因”， 难道不应该是断桥吗（说明了现代的F不会像有些人批评的的那样不能用于研究古代的F） 还有就是做题的时候的逻辑。。。lawyer牛的虽然大家都推荐好，但是好难懂，真心觉得看完陈向东和网上一些其他说法后weaken部分的思维开始混乱了，就是说具体上手的时候不知道改按哪个标准程序去判断 拿OG60来说 60.Red blood cells in which the malarial-fever parasiteresides are eliminated from a person's body after120 days. Because the parasite cannot travel to a newgeneration of red blood cells, any fever that developsin a person more than 120 days after that person hasmoved to a malaria-free region is not due to themalarial parasite.
Which of the following, if true, most seriously weakens the conclusion above?
(A)The fever caused by the malarial parasite may resemble the fever caused by flu viruses.
(B)The anopheles mosquito, which is the principal insect carrier of the malarial parasite, has been eradicated in many parts of the world.
(C)Many malarial symptoms other than the fever, which can be suppressed with antimalarial medication, can reappear within 120 days after the medication is discontinued.
(D)In some cases, the parasite that causes malarial fever travels to cells of the spleen, which are less frequently eliminated from a person's body than are red blood cells.
(E)In any region infested with malaria-carrying mosquitoes, there are individuals who appear to be immune to malaria.
A. flu viruses症状导致的发烧和那虫的类似——大概是想让人怀疑是其他病毒干的坏事吧，没有削弱
B. anopheles mosquito这个携带传播者已经大部分灭绝了————其他传播者，，不是那个虫，不相关
c. 用药治疗的暂时压制了但等药疗效过了又会重新出现其他症状——其他症状非fever，不相关
E.在那啥大肆滋生的地方，人们都免疫了——其实是支持结论，所以是个加强
答案D可能还有残留，对的