【正文】 再次為給我誤導(dǎo)的朋友道歉。如果消耗掉的鹽發(fā)生在過(guò)去的一百年，則過(guò)去一百年的鹽度增加量作為速率是低估了。結(jié)論不成立。 該算法的假設(shè)：過(guò)去 100年的鹽度增加量可以當(dāng)作速率，即每個(gè) 100年的鹽度增加量是一樣的或低估了（因?yàn)榈凸?，算出的時(shí)間比實(shí)際大）。后者的理解導(dǎo)致了我以前的錯(cuò)誤分析和結(jié)論。 原來(lái)的錯(cuò)誤來(lái)之于對(duì)原文的錯(cuò)誤理解： over the past hundred years 是指過(guò)去的一百年。其實(shí)產(chǎn)生這些情況的原因在于原文沒給任何有關(guān)計(jì)算速率的信息。所以，該題可攻擊的因素只剩下 current salt levels （即現(xiàn)在海洋的鹽的濃度或水平），即 current salt levels 是否能反映真實(shí)的現(xiàn)在應(yīng)該有的濃度，即在該速率下，花多少年所能達(dá)到的濃度。只有一個(gè)原因，原文沒給其它任何信息。由于河流的 SALT 流入海洋導(dǎo)致的鹽分 的增加，用這增加去計(jì)算海洋的年齡，實(shí)際就是指海洋鹽分增加的速率，即每個(gè)單位年度的鹽分增加量，這個(gè)單位年度可以是 100 年，也可以使 50 年，原文沒說(shuō)，我們不知道，反正是個(gè)速率。而 A取非是結(jié)論一定不成立 GWD12Q29: The Earth?s rivers constantly carry dissolved salts into its oceans. Clearly, therefore, by taking the resulting increase in salt levels in the oceans over the past hundred years and then determining how many centuries of such increases it would have taken the oceans to reach current salt levels from a hypothetical initial saltfree state, the maximum age of the Earth?s oceans can be accurately estimated. Which of the following is an assumption on which the argument depends? The quantities of dissolved salts deposited by rivers in the Earth?s oceans have not been unusually large during the past hundred years. At any given time, all the Earth?s rivers have about the same salt levels. There are salts that leach into the Earth?s oceans directly from the ocean floor. There is no method superior to that based on salt levels for estimating the maximum age of the Earth?s oceans. None of the salts carried into the Earth?s oceans by rivers are used up by biological activity in the oceans. 沒有狀語(yǔ) 過(guò)去 100年中鹽增加總量 / 100年 = 每年恒定的進(jìn)入海的鹽量 現(xiàn)在總的海中的鹽量（默認(rèn)初始為 0） / 每年恒定的進(jìn)入海的鹽量（上面求得） = 海形成的最大年齡（暗示可能鹽有消耗，因此是最大年齡） A說(shuō)：過(guò)去 100年中進(jìn)入海中的鹽量不能異常的高（暗示如果異常高的話，每年恒定的進(jìn)入海的鹽量這個(gè)數(shù)值就不能作為第二個(gè)等式的分母）所以是 assumption B說(shuō)：在一個(gè)特定的時(shí)間，所有的河里鹽量一致 ——》無(wú)關(guān)，不 能從原文信息中衍生 E說(shuō)：海中的鹽沒有被生物活動(dòng)所消耗 ——》文章說(shuō)了求的是最大年齡，因此有消耗也屬于范圍之內(nèi) Lawyer開始選 E： 這道題已作過(guò) 2個(gè)多月了，現(xiàn)在再回來(lái)想一想，其實(shí)理解了該題的主要詞的含義和嚴(yán)格遵循所有推理信息來(lái)之原文，就明白為何 E是正確答案， A不是。 Which of the following is an assumption on which the argument depends? A. Renaissance paintings were created in conditions involving far greater fluctuations in temperature and humidity than those permitted by current Storing B. Under the current standards that museums use when storing Renaissance oil paintings, those paintings do not deteriorate at NOT AT ALL取非是 some C. Museum collections typically do not contain items that are more likely to be vulnerable to fluctuations in temperature and humidity than Renaissance oil paintings. 無(wú)關(guān) D. None of the materials in Renaissance oil paintings other than the paint are vulnerable enough to relatively wide fluctuations in temperature and humidity to cause damage to the 因 E. Most Renaissance oil paintings are stored in museums located in regions near the regions where the paintings were created.[D]無(wú)關(guān) Answer is D. B does not have to be true for this question. If the painting deteriorate somewhat with the standards, the standards can still be relaxed if the relaxation does not affect the restoration. C is not correct either. It is clearly out of scope. We are talking about restoring this particular type of painting and the standards as well as the change are both for this kind of painting. Whether the museum has other kind of items is irrelevent. Please make sure you understand. D is one typical answer. It simply points out that it might not be the oil that requires the standard, but something else. GWD9Q24: For similar cars and drivers, automobile insurance for collision damage has always cost more in Greatport than in Fairmont. Police studies, however, show that cars owned by Greatport residents are, on average, slightly less likely to be involved in a collision than cars in Fairmont. Clearly, therefore, insurance panies are making a greater profit on collisiondamage insurance in Greatport than in Fairmont. G的汽車保險(xiǎn)費(fèi)比 F高 G的撞車比 F少 G的保險(xiǎn)公司利潤(rùn)比 F高。原文已知道 previously established panies 產(chǎn)生的新工作沒去年多，需要的假設(shè)是今年的 new panies 產(chǎn) 生的新工作和去年 new panies 產(chǎn)生的新工作比較情況。 Eg. Difference in experience, in age, in sex, in location, in money, in.. and so on. 對(duì)于假設(shè)題，反復(fù)強(qiáng)調(diào) ETS定義：取非削弱。s conclusion would be render false. AR 作的大多數(shù)維修工作必須重修，重修很令人 滿意。 rather, there is clearly a level of focused concentration that plex repairs require that is elicited more reliably by rework jobs than by firsttime jobs. The argument above assumes which of the following? There is no systematic difference in membership between the group of mechanics who do firsttime jobs and the group of those who do rework jobs. 排除他因。人口 *需求 =大米總銷售 Which of the following is an assumption on which the argument depends? No pronounced trend of decreasing per capita demand for rice is imminent in Not all of the acreage in Teruvia currently planted with rice is well suited to the cultivation of rice. None of the strains of rice grown in Teruvia are exceptionally highyielding. There are no populated regions in Teruvia in which the population will not increase. There are no major crops other than rice for which domestic production and domestic demand are currently in balance in Teruvia.[A] C不對(duì) If you think C is correct, you might have misunderstood C. Here it does not matter whether the rice strain is high yield or low yield. If you thought C means the rice strain has potential to grwo more rice per acre, which is apparently a misunderstanding, the argument has said that ...nor will rice yields per acre increase appreciably 反對(duì)前提 GWD6Q4: In the past the country of Siduria has relied heavily on imported oil. Siduria recently implemented a program to convert heating systems from oil to natural gas. Siduria already produces more natural gas each year than it burns, and oil production in Sidurian oil fields is increasing at a steady pace. If these trends in fuel production and usage continue, therefore, Sidurian reliance on foreign sources for fuel should decli