仇人相见，分外眼红——二战败，放狗

Estaban

楼主二战，不同于一战的紧张不已、答题速度太快导致Verbal虽然感觉甚好但结构惨不忍睹，这次楼主故意压慢时间，求稳求准，争取做一道对一道...谁知道TMD除了作文以外都TM没答完...IR和Verbal更是最后一题连蒙都没来得及时间就到了......M50，V28，Total 660

不费话了，放狗。


作文：Clare's Clothing 模仿 Disc Depot那篇，超简单


IR:首先声明，楼主之前没有看IR寂静，这次考试也是楼主自去年10月份一战结束后第一次做IR...所以可能有些题讲的不那么完整，如有冲突，还是参考大神的寂静。
1.  记不太清了，有道题是说博物馆应该购置什么样的艺术品，经理说最好是玉器(jades)、瓷器(ceramics)、图画(paintings)：人物画或者是风景画，因为顾客对这两个最感兴趣；另外有一个专家说要买东方人的画(paintings)或是雕塑(sculptures)，因为图书馆在这两方面缺乏(weakness).然后下面给出了一个三列N行的表格（表格含选择区），第一列第一行title:paintings第二列第一行title:sculptures第三列是一系列艺术品title: Eastern Artist works，要求在paintings和sculptures中各选择一个（只一个）能满足双方的要求的。大概是这样，具体细节可能有偏差。
2.  还有一道多元推理题是说应该把钱投资给哪个地区的，给了一篇文章和一个表格，文章讲了四个人各不相同的投资建议，表格给出了各个地区的各项信息：包括人均收入、人口、公路里程等等。后面的题有判断对错，以及根据文章中提到的三个人的观点分别决定投资给哪个地区。不难，细心就行。
3.  还有一个关于粮食产量的推理，貌似只有一个表格，也是给出了几个信息：各地的总面积、可耕种面积、粮食产量等等，也不难。
4.  有一道关于什么什么增长的，给了一个散点图，这个楼主没太看懂，最后选择是两者增长态势成正相关positive。
5.  有关于传统邮件和电子邮件的，是折线图，直接看题干就行，关键是注意坐标两边的单位不一样，左边是...bytes（字节），右边是tons，注意单位了什么都好说。
6.  到最后有一道数学题讲的是买东西的，挺难，也可能是我当时没时间算了，也没算出来，式子也没记清，楼主只记得当时在计算过程中有30和60两个数字，当时感觉没有正确答案啊...再有后面的题就是题干也没时间看了，都是蒙的，最后一题由于手抖差一秒没提交成功..............................T T...................
...


数学：
楼主开始没遇到多少寂静上的题，好在那些题都不算难，加上楼主的稳定，所以感觉20多道题之后就进入到难题区了...但是由于前面花费时间太多，基本上数学的最后七八道都没有把握，最后的三四道题干都木读...不过好在提交成功
1.  需要强调的一点是寂静上有一道题是说一个人得了一笔钱，然后她第一周花了二分之一（注意！寂静上说的是马上花掉了二分之一，不计入时间，而楼主特意注意到了真题题干上说了第一次花钱已经算作第一周first week了！）后面的表述和寂静一样，之后的12周，每周花掉剩下的二分之一，最后问在第几周这个人花掉的钱占到了最开始钱总数的19/20（注意！这里说的是已经花掉的钱占总数的19/20，而不是剩下的钱，也不是1/20），由于前面提到的第一周是被计入的原因，楼主这题选了“第五周”而非寂静上的第四周，很确定。
2.  后面的几道题真心很难，楼主也没有时间去做了，有一道题是：1-什么什么1/5=x-1/(y+(1/z))，然后让求x+y+z的值。这题我看白天有人在群里问了，截图形式的，就是那道题，可能现在寂静里面已经有了吧。
3.  还有寂静上那道圆与一条直线相交，然后那条直线又与圆的一条切线相交的那道题，就是寂静上的第185题。只是给的条件是除了直径rx已知以外，NR也已知，求RP。不用像寂静里做那么多辅助线，也不用证什么全等，找相似三角形PRN和PRM对应边相等就解出来了。很简单。


最后提醒大家...千万不要像楼主一样想当然后面的题简单或者时间够用怎么样...虽然要保证正确率（楼主觉得自己前面的20多道题全对也不是没可能），但是也还是要节省时间留给后面...楼主觉得再给我5分钟52可能达不到但是51还是非常有希望的...


Verbal：
1.  阅读中了三篇，同一地区股票价格变动相同、.眼睛的neuron、art 劳动者（就是音乐家劳动率那篇），第一篇是讲熔岩lava的但是和寂静里面说的都不一样，不是讲如何补充的，而是第一段先讲了一个理论，说是越接近closer表面surface，lava的exchange越频繁；然后第二段讲了一个反例，就是科学家发现海底火山与众不同，在海平面450米以下的火山根本就不exchange！按理来说海底火山更接近地球表面应该更多地exchange，但是这个结果就让科学家觉得很puzzled. 然后就有两种假说，第一种是说不是不exchange，而是flow too rapid（这里好像还有一个什么什么crack...的词），第二种解释是啥我忘了，好像是直接反驳第一段的结论的。后面有主旨题，我选的是argue了第一段的假设（我也觉得不是很贴切，但是其他四个都不是特别好...）。
2.  逻辑，中了两三道题吧，在这里需要特别注意的是，寂静里那道意大利的E牛来源于土耳其的那道题，好像问的是加强，楼主特意看了题干中专门有一句意思是：如果是一个地方本地本身就有本土牛的话，其他地方的牛不太可能再inhabit在这个地方。而不是寂静中翻译的什么如果要是移民的话不可能带大量的牛啊或者是其他地方的牛不可能来啊。所以这道题楼主坚定地选择了：意大利这个地方的牛在E牛来之前已经消失了（意思就是意大利在E牛来的时候没有本土牛），我觉得这个还是很make sense的。
3.  还是一道逻辑，讲solar power的，但是和寂静中的不一样。题干上说现在太阳能发电比传统的power plant发电价格要贵三倍，但是很多商人还是选择投资太阳能cell，问解释：选项有C，现在建造太阳能cell的材料价格以后会越来越高；D，有一个越来愈大的用电市场，这个用电市场的所在地区是power plant的电力所无法送到的；E，太阳能发电的原料，sunlight不要钱free。楼主果断的选了D，说明太阳能发展是形势所需，用电需求巨大而传统发电厂无法供给。
4.其他的逻辑感觉都还不算特别的难...后面有几道逻辑也是没时间看了...语文也是差最后一秒最后一题没提交成功...


希望对大家能有帮助，楼主也再次发现了自己的临场真是不好（不排除基本功不扎实），至于说全答完能不能上700这个我不好说，不管怎么样这次考完虽然结果不好但是比起上一次更让我看到了希望。送给大家我的教训，考场上不要纠结！


祝各位取得好成绩！！！

Avapan

谢逻辑狗~

Estaban

最有一段排版怎么这么恶心....

wsywsywsy

顶！！！！

SunYJJJJ

我一战也是速度太快正确率低。目测我二战又要悲剧了

mlz1314

还有时间，坚持到最后就是你的资本了！

honghegu

多谢多谢~

qiaoxubo

谢楼主，你的51分梦想交给我完成吧，吼吼

蓝柏

感谢！！本月JJ有两篇火山的文章，你考的应该是第二个，麻烦认一下狗狗~~~

45.火山熔岩*
[V1] by 绯舞 (ID: 672955) Q51V38，740
那篇文章说的是under the sea 的火山，有说lava怎么melt怎么形成，然后说它会在往上的过程中和周围的物质发生元素交换什么的，但是这种痕迹只在较深（或者是较浅）的地方有，另外一段就没有。第二段，有科学家猜测是因为速度太快了来不及交换，但是实验证明在那种压强下是不可能快的。然后又提出一种假设说是之前交换完了，就不再交换了
考古已确认（本月狗主说考题像下面原文的缩减，作为重点读一下吧~）
★火山熔岩的来由
V1 duke3d001 750, wade777, echosweet 700 & yueqianchen
关键词：45KM, Olivine, Orthopyroxene (referenced by gitarrelieber)。这篇文章的题目不难，狗的骨架也很清晰。
第一段讲火山爆发来源于Mantle中的Lava，而Lava来源于Melt ，Melt在向地表上升的过程中会与Mantle中的Rock反应并不断互相交换物质、变化结构，即吸收Orthopyroxene并排出Olivine。    
第二段说一个跟理论不太相符的事情，一种海底里的lava sample，在距离地表45千米突然发现已经停止这种物质交换，Melt的结构不变了。一种假设是那里的Mantle太松散了，使Melt无法与他们接触并交换物质，但立即被否定了(因为45KM还很深东西都很软，没有裂缝)。另一种假设是Melt在之前的上升过程中已经吸收了足够的Orthopyroxene， 并将能排出的Olivine都排了，无法继续反应。
1 darkchoco 710是什么可以证明这种exchange的存在：熔岩的成分
2 gyz12 740 一道文章最后句定位：Olivine的用完了,exchange就停止了
3 gyz12 740 一道是选chemical composition为特征 sashimiyuki 720 V37 选“lab experiments” indicate 那个melt 的变化的，没有选chemical composition, 细节题定位后决定的，确认后到现在还没有深深后悔过
4 tianmo0512 是什么发生反应：选melt
5 feifeizoe 750 V39 文中什么情况下描述了那种正常的exchange：lab experiment中实现了那种现象
6 The author mention “the melt to rise so rapidly” in order to：提出了一种hypothesis，这种hypothesis在后面被反驳

(疑似)原文未缩减 gitarrelieber (sereneys 730 V40 基本确认)
节选自The Origin of the Land under the Sea (Scientific American Magazine @ February 2009)
Author: Peter B. Kelemen

Knowledge of the intense heat and pressure in the mantle led researchers to hypothesize in the late 1960s that ocean crust originates as tiny amounts of liquid rock known as melt—almost as though the solid rocks were “sweating.” Even a minuscule release of pressure (because of material rising from its original position) causes melt to form in microscopic pores deep within the mantle rock. Explaining how the rock sweat gets to the surface was more difficult. Melt is less dense than the mantle rocks in which it forms, so it will constantly try to migrate upward, toward regions of lower pressure. But what laboratory experiments revealed about the chemical composition of melt did not seem to match up with the composition of rock samples collected from the mid-ocean ridges, where eruptedmelt hardens. Using specialized equipment to heat and squeeze crystals from mantle rocks in the laboratory, investigators learned that the chemical composition of melt in the mantle varies depending on the depth at which it forms; the composition is controlled by an exchange of atoms between the melt and the minerals that makeup the solid rock it passes through. The experiments revealed that as melt rises, it dissolves one kind of mineral, orthopyroxene, and precipitates, or leaves behind, another mineral, olivine. Researchers could thus infer that the higher in the mantle melt formed, the more orthopyroxene it would dissolve, and the more olivine it would leave behind.(melt上升时， 溶解Ort产生Oli, 所以melt higher， 溶解的Ort越多，产生的/留在身后的Oli也越多) Comparing these experimental findings with lava samples from the mid-ocean ridges revealed that almost all of them have the composition of melts that formed at depths greater than 45kilometers. This conclusion spurred a lively debate about how meltis able to rise through tens of kilometers of overlying rock while preserving the composition appropriate for a greater depth. If melt rose slowly in smallpores in the rock, as researchers suspected, it would be logical to assume that all melts would reflect the composition of the fashallowest part of the mantle,at 10 kilometers or less. Yet the composition of most mid-ocean ridge lavas amples suggests their source melt migrated through the uppermost 45 kilometers of the mantle without dissolving any orthopyroxene from the surrounding rock. But how? （疑大概为狗狗第一段的背景内容）

In the early 1970s scientists proposed an answer: the melt must make the last leg of its upward journey along enormous cracks. Open cracks would allow the melt to rise so rapidly that it would not have time to interact with the surrounding rock, nor would melt in the core of the crack ever touch the sides. Although open cracks are not a natural feature of the upper mantle— the pressure is simply too great—some investigators suggested that the buoyant force of migrating melt might sometimes be enough to fracture the solid rock above, like an icebreaker ship forcing its way through polar pack ice. Adolphe Nicolas of the University of Montpellier in France and his colleagues discovered tantalizing evidence for such cracks while examining unusual rock formations called ophiolites. Typically, when oceanic crust gets old and cold, it becomes so dense that it sinks back into the mantle along deep trenches known as subduction zones, such as those that encircle the Pacific Ocean. Ophiolites, on the other hand, are thick sections of old seafloor and adjacent, underlying mantle that are thrust up onto continents when two of the planet’s tectonic plates collide. A famous example, located in the Sultanate of Oman, was exposed during the ongoing collision of the Arabian and Eurasian plates. In this and other ophiolites, Nicolas’s team found unusual, light-colored veins called dikes, which they interpreted as cracks in which melt had crystallized before reaching the seafloor. The problem with this interpretation was that the dikes are filled with rock that crystallized from a melt that formed in the uppermost reaches of the mantle, not below 45 kilometers, where most mid-ocean ridge lavas originate. In addition, the icebreaker scenario may not work well for the melting region under mid-ocean ridges: below about 10 kilometers, the hot mantle tends to flow like caramel left too long in the sun, rather than cracking easily.

To explain the ongoing mystery, I began working on an alternative hypothesis for lava transport in the melting region. In my dissertation in the late 1980s, I developed a chemical theory proposing that as rising melt dissolves orthopyroxene crystals, it precipitates a smaller amount of olivine, so that the net result is a greater volume of melt. Our calculations revealed how this dissolution process gradually enlarges the open spaces at the edges of solid crystals, creating larger pores and carving a more favorable pathway through which melt can flow. As the pores grow, they connect to form elongate channels. In turn, similar feedbacks drive the coalescence of several small tributaries to form larger channels. Indeed, our numerical models suggested that more than 90 percent of the melt is concentrated into less than 10 percent of the available area. That means millions of microscopic threads of flowing melt may eventually feed into only a few dozen, high porosity channels 100 meters or more wide. Even in the widest channels, many crystals of the original mantle rock remain intact, congesting the channels and inhibiting movement of the fluid. That is why melt flows slowly, at only a few centimeters a year. Over time, however, so much melt passes through the channels that all the soluble orthopyroxene crystals dissolve away, leaving only crystals of olivine and other minerals that the melt is unable to dissolve. As a result, the composition of the melt within such channels can no longer adjust to decreasing pressure and instead records the depth at which it last “saw” an orthopyroxene crystal. One of the most important implications of this process, called focused porous flow, is that only the melt at the edges of channels dissolves orthopyroxene from the surrounding rock; melt within the inner part of the conduit can rise unadulterated.

晨依Jacqueline

谢谢楼主~~
这么多狗狗~~~赞！！下次RP大爆发