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生活几乎停滞了整整一个星期，只为了考G。感谢亲爱的丈夫的全力支持和3个宝贝的理解，更加感谢CD，感谢CD上所有默默付出的工作者和一起努力的战友们，用一句很俗套的话，没有你们，我不可能取得今天的成绩。祝愿所有CD上的朋友们都如愿以偿！
各部分的机经真的很全了，只要认真熟悉，考试一定会取得好成绩的，楼主深有体会。说一下惨痛的教训吧。也许很难想象，楼主的二战只有610分，比一战还低了好几十分，更可笑的是，楼主在出成绩之前非常自信能上700，因为象很多同学一样，感觉非常好，几乎所有的题都见过，答案也很肯定，当610分显示在屏幕上的时候，我不敢相信自己的眼睛，一度甚至想要求GMAC 复审成绩。后来痛定思痛，不得不面对现实，也许我当时的表现只值那么多。回想考试的过程，我似乎一直漂浮在考试之外，因为对机经已经非常熟悉了，所以根本不能踏实下来认真读题，几乎所有的题都是大概齐看一下就直接选答案，偶尔碰到没见过的，就一遍遍读，但也读不进去，一不留神，做到第20题的时候忽然发现只剩不到20分钟了，顿时乱了阵脚，后面的题目更是凭着记忆直接选答案，于是出现了上述悲剧的结果。
三战接受了教训，所有的题，无论是否熟悉，都仔细读一遍，从数学开始，就算一看题目就知道答案也要写下来，自己算一算。Pace 一定要掌握好。机经真的非常有用，虽然楼主三战很认真地复习了，但是如果没有机经的帮助也不可能得到750。只是在使用机经时，不要有侥幸心理。
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佩服那些能回忆出大量狗狗的同学，楼主遇到一些新题很想写下来却完全记不起来了。逻辑遇到一些很绕的题，不太长，但读的时候感觉很吃力。
其中有一道题是关于鸟唱歌的，说是遗传的，问Evaluate。
注意变体
14. boldface 【by artemisan】
Aroca
City currently funds its public schools through taxes on property. In place of this system, the city plans to introduce a sales tax of three percent on all retail sales in the city.Critics protest that three percent of current retail sales falls short of the amount raised for schools by property taxes.The critics are correct on this point. Nevertheless, implementing the plan will probably not reduce the money going to Aroca’s schools.Several large retailers have selected Aroca City as the site for huge new stores, and these are certain to draw large numbers of shoppers from neighboring municipalities, where sales are taxed at rates of six percent and more.In consequence, retail sales in Aroca City are bound to increase substantially.
In the argument given, the two potions in boldface play which of the following roles?
阅读如下：
9.**global warming & sulfate cooling
关于 world warm 全球变暖，先分析一个具体case说，一个地方最近调查发现somewhere warm slowly了，1990初期，第一个人M分析说因为南北区域差异在Northern 产生一种Sulf。。物质有cool的作用，这是slowly的原因；过了一段时间又发现自己观点有问题，于是他自己先doubt that 说了个新的发现。此处有题问：M这个人在1990初期认为slowly的原因是什么，只要选Sulf。。物质那个选项即可。还有题问：M doubt 的是什么，要定位到doubt that 后，第二段就另一个人disagree with M。他则提出另一个原因：跟ocean 什么有关的。
第一段首先提出一种温室效应作用，如果按此标准计算，那么地球表面的温度要比现在实际测得的高得多。为了解释这种现象，一种现在的温室理论模型（简称温室效应模型）认为，温室效应是存在的，但是由于工业化革命的工程中排放了大量的硫，硫具有制冷作用，所以导致了现在温度差异这个现状。
第二段讲某牛人用这个理论来解释1895年工业化革命时北半球的气温遇到了想不通的事实，在此期间，工业化革命使得北半球产生比南半球多得多的硫，为什么那时侯北半球相反比南半球还热呢？他想不通，于是他认为，现在所谓的温室模型是狗屁！
第三段讲另外一个更牛的牛人stanter 对上面这个牛人想不通的问题进行了解释，他认为，南半球有很多海洋，具有调节气候的作用（此处有题），所以南半球温度不上升是情理之中的事情，然后balabala 一通，也没有对北半球温度差异作出合理解释，就急忙表态：温室效应模型是对的。完了。
问题：
v问中心论点
v第一题问F和G在争什么，我选事实数据是否影响温室效应理论的正确性
vM这个人在1990初期认为slowly的原因是什么，只要选Sulf。。物质那个选项即可
v文章中哪一项提出了与温室效应相矛盾的地方，但又没有作出合理解释？我选北半球有硫但气温还在升高。
v文章的结构？选：先提出一个现象后提出模型，然后利用这模型作不同的解释来论证模型作用
vStanter认为以下哪一个是正确的？选：南半球海洋具有调节气温作用
vSanter和Michael都不同意哪个观点
v然后还问到第二个人的观点，四个选项中有一个讲到海洋对cooling作用的影响，
v问为什么那个micheal要doubt自己的观点。我选的是:大概是本该在北半球出现的现象没有出现。
v后来这个人认为硫的作用如何? (我选的是它是一个短期暂时的因素会影响general的趋势)。
v以下哪个现象跟文中科学的历程类似。
22. **某类植物学家的研究可以和ecologist的研究相辅相成
第一句是 just as ecologists 曾经在哪个方面帮助过古生物学家，这个学家也在什么nature, climate 方面aid了ecologists，然后举了个例子，说以前ecologist认为植物都是interdependent的，共同改变环境，古生物学家发现的一个东西让生态学家中支持相近物种会聚在一起那一派（好像是这样）得到支持，因为几种interdependent的植物在一起，然后分泌的化学物质又作用于土壤（这里一道题问为什么提到土壤）。但比如哪个P家发现fir,spruce, XX (三种树的名字）在一起共同影响soil chemical，说明他们是interdependent的。但是一转折说也不只是Interdependent的，就像一个town 发大水了各家各跑自己的那样（有细节题，问这个analogy为了说明啥），那些树在环境大变化的时候也各自跑了，spruce（云杉）就跑到别的环境中，跟别的什么物种走进了另一个species community之类的。
问题
v有问主旨题
v问为什么提到土壤说明植物是interdependent
vanalogy为了说明啥
43.**太阳悖论
young sun paradox，研究指出太阳在地球刚形成时没那么亮也没那么热，因此地球当时应该被冰川覆盖。然而在38亿年前到20亿年前地球上存在大量液态水。即出现了矛盾。
然后文章给出了解释，地球的大气情况是经历了很大的改变来balance太阳辐射的变化所带来的影响。二氧化碳的浓度直接影响地球接受和反射辐射的比例。二氧化碳让地球变暖了，它会吸热。当时二氧化碳比现在多，且随时间流逝而减少。
第三段说一个什么家做了研究，quantify这个二氧化碳浓度要怎么变，使得二氧化碳减少和太阳变热的作用抵消，从而地球基本温度不变，如果二氧化碳的变化速度大于或者小于此速度，都会出现很严重的后果。如果要保证生命延续，tolerance是很低的，二氧化碳变低的速度稍微快一点，就会造成冰川；稍微满一点，则会热死掉。但是有人指出这个理论是flawed, 不是二氧化碳浓度为因，温度为果。实际上，地球系统的一些bio chem. Cycle保证了温度和二氧化碳浓度的互相影响（当温度太高，二氧化碳浓度自然降低 and vice versa），以至于可以保证温度的相对稳定。
问题
v有个题考到“二氧化碳是地球变热时它变少，地球变冷时它变多”这句话说明了什么，我选的是说明地球温度基本恒定，不确定。
v主旨题选了选对一个矛盾现象给出多种解释methology的那个好像，不难仔细看
v细节题，题目忘了答案选了保持地球温度还不知道是CO2的balance，回到文中有相关论述的
v问文章中提供的信息可以推测什么我选未来太阳的发光会减弱
v问第一段的地质数据有什么作用我选定义了一个矛盾
46.商品库存
Q35~Q37: T-7-Q23-Q25
Companies that must determine well in advance of the selling season how many units of a new product to manufacture often underproduce products that sell well and have overstocks of others. The increased incidence in recent years of mismatches between production and demand seems ironic, since point-of-sale scanners have improved data on consumers’ buying patterns and since flexible manufacturing has enabled companies to 24 produce, cost-effectively, small quantities of goods. This type of manufacturing has greatly increased the number of new products introduced annually in the United States
. However, frequent introductions of new products have two problematic side effects. For one, they reduce the average lifetime of products; more of them are neither at the beginning of their life (when prediction is difficult) or at the end of their life (when keeping inventory is expensive because the products will soon become obsolete). For another, as new products proliferate, demand is divided among a growing number of stock-keeping units (SKU’s). Even though manufacturers and retailers can forecast aggregate demand with some certainty, forecasting accurately how that demand will be distributed among the many SKU’s they sell is difficult.For example, a company may be able to estimate accurately the aggregate number of shoes it will sell, but it may be uncertain about which specific types of shoes will sell more than other types.
Q35:
Which of the following most accurately describes the function of the last sentence in the passage (lines 35-40)?
To cite a situation in which the aggregate demand is more important than the distribution of demand among SKU’s
To refute an assertion about the side effects of flexible manufacturing
To illustrate an assertion about companies’ ability to forecast demand
To provide an example of ways in which companies address the difficulties of forecasting demand
To note an exception to the author’s assertion about distributing demand among SKU’s
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Q36:
The passage suggests which of the following about divided demand among a growing number of SKU’s?
It has increased the average lifetime of products.
It has resulted from retailer’s attempts to predict demand more accurately and avoid both understocks and overstocks.
It has decreased the use of flexible manufacturing by companies.
It has not increased the expense of keeping inventory of certain products.
It has not prevented companies from predicting aggregate demand with some certainty.
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Q37:TTGWD-6
According to the passage, which of the following has led to growth in the number of new products introduced in the United States
each year?
Reduced average lifetime of products
Increased ability to forecast aggregate demand
More cost-effective ways of keeping inventory for products
Cost-effective production of small quantities of goods
Increased ability to divide demand among a number of SKU’s and to forecast how that demand will be distributed among those SKU’s
答案：CED
AA
原题：No. 91The following is taken from an editorial in a local newspaper.
“Over the past decade, the price per pound of citrus fruit has increased substantially. Eleven years ago, Megamart charged 5 cents apiece for lemons, but today it commonly charges over 30 cents apiece. In only one of these last eleven years was the weather unfavorable for growing citrus crops. Evidently, then, citrus growers have been responsible for the excessive increase in the price of citrus fruit, and strict pricing regulations are needed to prevent them from continuing to inflate prices.”
AI
原题：No.31 Financial benefit should be the most important factor when choosing a career
最后，祝所有的CDer 都杀G成功，梦想成真！
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发表于 2011-11-18 12:58:53
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