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标题: [CASK EFFECT] 难度【LSAT】1-33 解读 [打印本页]

作者: lghscu 时间: 2010-1-21 08:45:40 标题: [CASK EFFECT] 难度【LSAT】1-33 解读

题目请参考

【CASK EFFECT】1006G阅读全方位锻炼--难度【LSAT】--答题解读汇总

答案：DADAEB

1(D)
开篇提出“cell genetics”与“rDNA”，并表明本文行文思路“The technology has created excitement and controversy because it involves altering DNA—which contains the building blocks of the genetic code.”，接着从两方面讨论rDNA—proponents and opponents
“Using rDNA technology, scientists can transfer a portion of the DNA from one organism to a single living cell of another”
(+)“Proponents of rDNA research and development claim that it will allow scientists to find cures for disease and to better understand how genetic information controls an organism’s development.”
(+)“Proponents also cite nonmedical applications for this technology. Energy production and waste disposal”
(-)“A major concern of the critics of rDNA research is that genetically altered microorganisms might escape from the laboratory.”
(-)“Opponents of rDNA technology also cite ethical problems with it”
作者通过(+)(+)(-)(-)方方面面介绍cell genetics/rDNA，即
“summarizing the controversy surrounding rDNA research and development”

2(A)
根据“an accurate statement about research into the genetic code of cells”定位原文
“After thirty years of investigation into cell genetics, researchers made startling discoveries in the 1960s and early 1970s which culminated in the development of processes, collectively known as recombinant deoxyribonucleic acid (rDNA) technology, for the active manipulation of a cell’s genetic code.”
以及
“Using rDNA technology, scientists can transfer a portion of the DNA from one organism to a single living cell of another. The scientist chemically “snips” the DNA chain of the host cell at a predetermined point and attaches another piece of DNA from a donor cell at that place, creating a completely new organism”
即
“It led to the development of processes for the manipulation of DNA.”

3(D)
根据“potential benefits of rDNA technology”定位原文
“Proponents of rDNA research and development claim that it will allow scientists to find cures for disease and to better understand how genetic information controls an organism’s development.”对应(B)
“Energy production and waste disposal may benefit: genetically altered organisms could convert sewage and other organic material into methane fuel.”对应(A)(E)
“Agriculture might also take advantage of rDNA technology to produce new varieties of crops that resist foul weather, pests, and the effects of poor soil.”对应(C)
(D)与“find cures for disease”不符合

4(A)
根据“most weaken an argument of opponents of rDNA technology”定位原文
“A major concern of the critics of rDNA research is that genetically altered microorganisms might escape from the laboratory.”选项(A)直接回应本话题
“New safety procedures developed by rDNA researchers make it impossible for genetically altered microorganisms to escape from laboratories”

5(E)
根据“the last sentence”,” serves to”定位原文
“Opponents of rDNA technology also cite ethical problems with it. For example, it gives scientists the power to instantly cross evolutionary and species boundaries that nature took millennia to establish. The implications of such power would become particularly profound if genetic engineers were to tinker with human genes, a practice that would bring us one step closer to Aldous Huxley’s grim vision in Brave New World of a totalitarian society that engineers human beings to fulfill specific roles.”
本段TS为“ethical problems with it(rDNA)”
小目的是说明“it gives scientists the power to instantly cross evolutionary and species boundaries that nature took millennia to establish”
选项中只有(E)的表述最为接近
“illustrate the sociopolitical ramifications of applying genetic engineering to humans”

6(B)
根据“strengthen an argument of the opponents of rDNA technology”定位原文
“The effect of genetically altered microorganisms on the world’s microbiological predator-prey relationships is another potentially serious problem pointed out by the opponents of rDNA research. Introducing a new species may disrupt or even destroy the existing ecosystem. The collapse of interdependent relationships among species, extrapolated to its extreme, could eventually result in the destruction of humanity.”强调eco-system的imbalance，而选项(B)有力地支持该观点
“Genetically altered microorganisms have no natural predators but can prey on a wide variety of other microorganisms”

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