对2018fall早申起着关键作用的10月SAT考试终于落下了帷幕，这场至关重要的SAT考试，沃邦部分老师也有参与到其中，并在考后第一时间为大家解析了本次考情，下面我们已整理出文字稿，错过讲座直播的同学及家长可以阅读以下考情回顾。
阅读部分
阅读第一篇：
2012, 作者，Barbara Kingsolver, 小说名字 Flight Behavior
原文内容:一位名叫Dellarobia 的母亲带着十岁的儿子Preston去森林里观察butterflies。两人先下了车，走进树林，看到了部分的帝王蝴蝶，儿子好奇地问母亲，蝴蝶吃什么。妈妈自己也不知道答案，但她不愿意打消儿子的好奇心，于是鼓励儿子在google中自己搜索答案。此时，文章加入一段母亲内心的矛盾心情，她知道，自己鼓励儿子独立，但是儿子真正独立后，也就不再需要母亲。
然后二人走进森林深处，发现了无数的帝王蝴蝶依偎，团团围在树干周围，仿佛像一个黑斗篷遮盖了整个森林。妈妈在一旁静静地等待儿子发现这一奇景的反应，和儿子一起感受大自然的奇观。此处母亲内心又有独白，希望自己能送给孩子最好的礼物，那就是sight，可理解为观察力，发现别人无法发现的美。儿子这时好奇地触摸了一群蝴蝶，然后蝴蝶散落下来。儿子觉得自己闯了祸，但妈妈很温和的安慰他,只要不伤害蝴蝶，没有关系。而母亲自己也想起小时候自己的观察蝴蝶的记忆。
第一题 考点: 人物塑造The son is characterized as someone who is ...
第二题 细节题 why did Preston' lips "silently moving "?
第三题 推断题 what is Dellarobia's expectations for her son?
第四题 询证题 it could be inferred that Dellarobia's underlying tension concerning her relationship with her son?
第五题 证据
第六题 修辞题 the use of the words "black drape ""hairy legs of giants" mainly serves to
第七题 询证题during the trip, the mother is compelled to ...
第八题 暂无
第九题 词汇题 simple
第十题 修辞题 the function of the last 3 sentences in the excerpt?
阅读第二篇：
文章讲的是布雷顿森林体系，凯恩斯主义及其怀特体系对立的观点。
第一段背景，二战后大国开会建议布雷顿森林体系重建国际经济秩序，并提到了一个重要人物凯恩斯。第二段和第三段讲解凯恩斯的观点。第四段讲解的是凯恩斯对于会议结果满意。
第五段讲解的是布雷顿森林体系的好处，中间一个转折（此处出题），指出这个体系真正的anchor是美国。第六段讲解的是19世界70年代，美国通货膨胀被迫货币贬值（此处出题），布雷顿森林体系崩溃。
第一题考查文章主旨；
第二题和第三题是配套询证题，考查的是凯恩斯和White的观点差异，在于the amount and type of the money which is allocated by the World Bank；
第四题考查第四段第一句话Writing to a colleague after the conference ended, Keynes professed to be pleased；询问凯恩斯的态度，满意会议结果；
第五题考查convenient mirage的目的题；
图表题考了两题图表与文章结合的题目；根据图表中的数据回到原文定位找到美国对应时期或者美国对应时期的经济特征。
阅读第三篇：
文章大意是通过测量树木叶子中gold含量从而可以确定矿产蕴藏在何处。第一题词汇题考查单词“sport”出现在文章第一段第二句话。第二题考查文章第一段最后一句话，讲解这一科学发现（含有Gold的树叶可以指示矿产所在地址）对采矿业的好处，即缩小矿产地址确认的范围。第三题是第二题对应的询证题。第四题词汇目的题gleam的结构作用，可参考上一段最后一句转折部分but the scientists couldn't discount the possibility。第五题目的题“don’t think about mining trees, however”在段落中的作用。第六题和第七题是配套询证题，考查文章“like other elements on the earth, gold get sucked up by the plant as it absorbs nutrients in the soil. Then as it dissolved material, it get transported throughout the tree”意思是树木会吸收土壤中的gold并运送到全身。第八题考查图表中leaves部分。第九题考查图表中twigs部分。
第三篇原文如下：
Gold in Trees May Hint at Buried Treasure
By Sid Perkins
Money may not grow on trees, but gold does—or at least it accumulates inside of them. Scientists have found that trees growing over deeply buried deposits of gold ore sport leaves with higher-than-normal concentrations of the glittering element. The finding provides an inexpensive, excavation-free way to narrow the search for ore deposits.
Scientists have long had clues that trees and other vegetation pulled gold from the soil and transported it to their leaves, but the evidence wasn’t clear. The gold particles could have stuck to the leaves after being blown there as dust, for example. To bolster the case that the gold came from soil beneath the trees, researchers conducted a series of field studies and lab tests.
At one site in Western Australia, the scientists gathered leaves, twigs, and bark from eucalyptus trees growing above a known gold deposit. The deposit is about the size of a football field and lies 30 meters or more below ground, but at today’s gold prices it’s too small and sparse to be worth excavating. The team gathered the same parts from trees growing 200 meters away from the ore. Although background concentrations of gold in vegetation are typically less than 2 parts per billion (ppb), dried leaves from the trees growing above the ore deposit—but not those 200 meters away—had gold levels up to 80 ppb, says team member Mel Lintern, a geochemist at CSIRO’s Earth Science and Resource Engineering division in Kensington, Australia. (CSIRO, the Commonwealth Scientific and Industrial Research Organisation, is Australia’s national science agency.)
Likewise, field tests by Lintern’s group at a site in southern Australia showed that eucalyptus trees growing above a deposit lying 35 meters underground had 20 times more gold in the gummy substances coating their leaves than did trees that grew 800 meters away. Previous studies had noted anomalous concentrations of gold in the leaf-coating substances, Lintern says, but researchers couldn’t discount the possibility that the tiny particles of the metal had stuck to the leaves after being carried there by winds.
That’s where the team’s new study gleams. By growing seedlings in greenhouses insulated from airborne dust and watering them with gold-laced solutions, the researchers demonstrated that trees actually pick up the metal from soil and deposit it within their leaves. The scientists report their findings today in Nature Communications.
The new research provides “a conclusive set of evidence … from a very nicely constructed set of experiments,” says Clifford Stanley, a geochemist at Acadia University in Wolfville, Canada. “The tree is a conveyor belt bringing gold to the surface,” he notes. Like other such elements in the earth, gold gets sucked up by the plant as it absorbs nutrients in the soil. Then, as a dissolved mineral, it gets transported throughout the tree, although the highest concentrations are typically found in leaves. “When you see the particles of gold inside the plants,” Stanley says, “all doubt goes away.”
Don’t think about mining trees, however. Average concentrations of gold in the leaves are much higher than normal, but individual particles of the metal are still very small, few, and far between. Even the largest particles—which Lintern and his team have jokingly dubbed “phytonuggets”—were no more than 8 micrometers across, about half the diameter of the finest human hair. The trees don’t have a biological need for the element, Lintern says; indeed, it may be toxic to them. “To the trees, gold may be just another heavy metal to be got rid of.”
Though the phytonuggets are too small to be collected and mined, they can serve as a sign that gold deposits may lie within the reach of a tree’s roots. Eucalyptus trees, which can grow lengthy taproots to reach deep ground water in arid areas, may stretch down 40 meters.
第四篇：历史类文章对比
两篇文章都是针对林肯总统任期(Lincoln presidency)的贡献来讨论。
第一篇文章作者著名的黑人人权运动家frederick douglass1876在一个林肯纪念演讲, 他核心意思是林肯虽然以不扩散奴隶制口号赢得了选举，但是主要照顾白人的利益，没有顾及黑人的利益，黑人的状况甚至变得更糟糕。
第二篇文章作者是Booker Washington，也是在一个Lincoln Memorial的演讲，盛赞林肯是emancipator，benefactor of all，主要argument是林肯解放了黑奴，也让白人自食其力，促进了经济的发展。
题目来看，双篇经典文章的题目都有。如回应题，考察第二篇文章作者对第一篇对林肯看法的回应，难度略高。双篇关系题也是考察文章的核心观点。也有不少修辞题，考察细节部分的作用和目的。整体基本体现历史类对比文章的特点，观点单一和对立。
原文链接如下：
http://teachingamericanhistory.org/library/document/oration-in-memory-of-abraham-lincoln/
http://teachingamericanhistory.org/library/document/an-abraham-lincoln-memorial-address-in-philadelphia/
第五篇：
原文大意：海底地貌（Hills等）形成主要原因，以前理论核心是板块运动（断层fault）导致了这些地貌的形成。新理论是说火山所致，火山又跟地球的轨道有关，轨道运动会引起潮汐海平面的变化，引起海地压力变化导致火山。有因为地球的ice ages又跟轨道有关，所以现在的海地地貌能提示ice age。
有道词汇题ease 选lesson 最后一道是推理题，反向推导，原文说海平面低会如何如何，题目考察的是海平面低有什么作用。还有一题考以前理论为什么有问题，不能解释现在观测到的ice age和海地地貌的相关性.
第五篇原文如下：
Record grooves' on ocean floor document Earth’s ice ages
By Eric Hand
With a little training, it's easy to see how ice age glaciers sculpted the land, scouring valleys and heaping up debris. This week, researchers revealed that the ancient cycles of ice also left their mark on the sea floor, thousands of meters below the ocean surface.
The evidence comes from seafloor spreading centers: sites throughout the ocean where plates of ocean crust move apart and magma erupts in between, building new crust onto the plates' trailing edges. Parallel to these spreading centers are “abyssal hills”: long, 100-meter-high ridges on the diverging plates, separated by valleys. On bathymetric maps of seafloor topography, they look like grooves on a record. These grooves, it now turns out, play the tune of Earth's ice ages.
During ice ages, which are mainly driven by rhythmic variations in Earth's orbit and spin that alter sunlight in the Northern Hemisphere, growing ice caps and glaciers trap so much frozen water on land that sea levels can drop a hundred meters or more. As the pressure on the ocean floor eases, magma erupts more readily at the spreading centers, thickening the plates and creating the abyssal hills, say the authors of two new studies,
“Step back and think about this: Small variations in the orbital parameters of the Earth—tilt and eccentricity and wobble—are recorded on the sea floor,” says Richard Katz, a geodynamicist at the University of Oxford in the United Kingdom and a co-author of the Science paper. “It kind of blows my mind.” Outside scientists are also impressed. “Their data provides evidence that the link is real,” says David Lund, a paleoceanographer at the University of Connecticut, Avery Point. “I'm very excited about it.”
The studies suggest that the bursts of seafloor volcanism could in turn affect climate—and even play a role in bringing each ice age to an abrupt end. They may also change some minds about the origin of the abyssal hills. Ever since scientists discovered the hills more than half a century ago, many thought they resulted from cracks in Earth's crust, or faults. As new oceanic crust is made in the spreading centers (the story went), it cools, fractures, and slips along faults, creating downward-dropped blocks that could be responsible for the ridge-and-valley topography.
Scientists still agree that faults play a role in shaping the seafloor topography, but the new work emphasizes the importance of volcanism in creating the hills in the first place, Lund says. “Faulting could be a secondary process as opposed to the primary one,” he says.
The study in Science was based on fresh ocean-floor data gathered by a Korean icebreaker ship during 2011 and 2013 surveys across the Australian-Antarctic ridge, a spreading center south of Tasmania. In a transect representing more than a million years of seafloor spreading, the researchers found topographic highs and lows that seemed to have formed in synchrony with all three of Earth's astronomical cycles, which have periods of 23,000, 41,000, and 100,000 years.
Wondering whether the climate cycles might somehow be boosting seafloor volcanism at regular intervals, the researchers created a computer model to test the idea. When sea level drops during ice ages, they found, the decreased pressure on the mantle through the thin ocean floor would increase the rate of mantle melting. That would boost the delivery of magma to the seafloor surface by just enough to explain the bands of thicker crust that form the abyssal hills. Paul Asimow, an igneous petrologist at the California Institute of Technology in Pasadena, says the model is physically plausible. “It's additional confirmation that the basic [sea level] signal is felt by the mantle,” he says.
语法部分
第一篇关于职业，互联网对新闻工作者的影响。
第一题是关于with的伴随状语，需要与主句的主语搭配。
第二题同义词辨析，develop antique/antiquated/traditional/outdated skills.
第三题是关于撇号的使用，today's journalists。
第四题是建立与下一句话的关系，划线部分是content must be integrate??and constant.
第五题标点符号，涉及到mean that主谓之间不能断开。
第六题考察冗余，instantaneous与immediate 意思重复，择其一与interactive 搭配。
第七题是support 题添加例子与已给出的并列，支持现代journalist 要具备的技能。
第八题论点题，总结段落大意，继续讲解记者要具备的技能。
第九题单词题， many online news sites track data.
第十题，识别并列项目
第十一题名词代词一致，journalists-his or her不符
第二篇：文章讲述了对于犬科动物玩耍行为的研究，包含玩耍的种类和与族间竞争的联系。文章难度适中偏易。
第一题考察并列，两个过去时并列的did … and helped define结构。
第二题问是否留下“如撕咬等行为”作为玩耍内容与攻击性行为区别的解释，选择保留。
第三题考察逻辑主语。犬科动物做句子主语，逻辑部分为“使用这样的玩耍方式”。
第四题为简单的代词题目，从there、their、it's、its中选择，只需考虑单复数。
第五题问是否要加对“角色互换”行为的解释。上文中提到了“角色互换和self-handicapping”两个行为且后者有解释，故保留。
第六题考察简洁性原则。题目大意为“研究者发现”，故选择最短的“发现”表达方式。
第七题选项中有两个不间断句，应选择which引导。
第八题考察时态。选项中有现在时、过去时、过去及现在完成时。本句大意“所在群体的竞争越激烈攻击性越强，犬科动物就更会在咬后鞠躬”，故选择现在时。
第九题考逻辑连接词。本题中两个句子比较了两个不同群体中coyote的鞠躬率，故选择对比连词连接两句。
第十题是排序题。被排序的句子为数据支持（coyote比例），故放在statement后。
第十一题是较为简单的词汇题，词组为“竞争、敌意”。选择最合适的competitive。
第三篇：the powerlessness of persuation
p1 引出话题 美国每四年进行一次总统选举 竞选成为焦点话题 候选人会进行debate 但这对改变人们的投票来讲作用比较小
p2 论证 利用一个图表来论证竞选debate运用小
p3 为什么debate作用小 首先因为debate 是在选举后期举行 很多人当时已经作出了决定
其次 看debate 的群众主要是对政治感兴趣的 通常会有自己支持的党派
p4 让步 虽然作用小 但也不能被disvalued
第一题 考察时态 现在完成时态与一般现在时态的区别
第二题 考察逗号用法 A,B, and C 题干中给的是during, before, and after the debate
第三题 考察固搭 put importance on
第四题 考察插入语标点 Surprisingly, though, sv
第五题 主旨题 p2的主要内容
第六题 词汇题 想表示微小的增长 题目中给的是teeny 选项为petite minuscule diminutive
第七题 图表题 根据图表选择正确信息
第八题 图表题 根据图标选择正确且相关的信息
第九题 简洁原则 词汇重复 draw 和attract 重复 political 和后面politics 重复
第十题 考察时态与主谓一致 主语为A of B结构 谓语与A保持一致为单数 A of B limits 原则一般现在时态 因为有标志词often
第十一题 哪一个选项能最好引入这一段 最后一段让步 选debate 不能被devalued
第四篇：文章讲了两兄妹及他们的寓所在法国先锋派艺术时期对艺术界的影响。难度适中偏难。
第一题标点符号。
第二题倒装句式，at an eye of....主语是在系动词之后，后面并列了3个人，所以谓语动词是复数形式。
第三题插入句子题，观察其中的特殊名词和指代词。
第四题，段首句，起到承上启下的作用
第五题问是否保留画线句。句子大意为“主人公在房子里堆满了艺术品”。由于文章讲授二人用艺术品吸引客人，故保留。
第六题考察句子合并。前半部为“各色人士聚集”，后半部为“在放了很多书的房间”，所以直接用介词连接。
第七题逻辑主语。逻辑部分为“挤满了人”，所以选择主语为“房子”的选项。
第八题考察段落主旨。段落中提到有些人并不欣赏这些艺术品，两兄妹就解释这些作品中的美感，所以选择与此段意相关的主旨。
第九题.考察标点 S such as A, B, and C V第十题考察平行结构 not only... but also
not only 后面跟的一个动词 but also 后面选一个动词就可以了
第十一题词汇题 题干为hysteria 选项为 thrill mayhem pandemonium
作文部分
作者:MATT Ridley
文章标题
"Lighten up. Sir David ,our wild life is safe "
来源: 2013,9,12,times London
Prompt : How does Matt Ridley build on his argument that human population do not have adverse effect on the natural environment in the future?
原文如下：
Lighten up, Sir David. Our wildlife is safe
By Matt Ridley Sep. 12, 2013, The Times
1. Publicising his imminent new series about the evolution of animals, Sir David Attenborough said in an interview this week that he thought a reduction in human population during this century is impossible and “we’re lucky to be living when we are, because things are going to get worse”. People will look back in another 100 years “at a world that was less crowded, full of natural wonders, and healthier”.
2. His is a common view and one I used to share. He longs for people to enjoy the open spaces and abundant herds of game that he has been fortunate enough to see. To that end he thinks it vital that there should be fewer of us.
3. Ever so politely, I would now passionately disagree with the two premises of his argument. It’s actually quite likely, rather than impossible, that population will be falling by the end of this century and it is also quite likely that the people alive then will have lots more wilderness to explore and wildlife to admire than today.
4. The rate at which world population grows has roughly halved from more than 2 per cent a year in the 1960s to roughly 1 per cent a year now. Even the total number of people added to the annual population has been dropping for nearly 30 years. If those declines continue, they will hit zero in about 2070 — not much more than 50 years from now. In recent decades the birth rate has fallen in every part of the world. Fertility in Bangladesh has fallen from nearly 7 children per woman in the 1960s to just over 2 today; Kenya from 8 to 4.5; Brazil 5.7 to 1.8; Iran 6.8 to 1.9; Ireland 3.9 to 2…
5. Europe, Asia and Latin America have already gone through this transition and most countries are producing babies at or below replacement rate of 2.2 per woman, at which population stabilises (without immigration). Africa, for so long written off as a special (basket) case, is following suit almost exactly. For this reason alone, I suspect the world population will stop growing and begin to shrink even earlier than 2070 and almost certainly within this century. But even if it does not, there is good reason to reassure Sir David that our great grandchildren will have more wildlife to look at than he has had.
6. An ingenious study by scientists at Rockefeller University in New York has recently calculated that even with population continuing to grow, and even with people eating more food and especially more meat, we have almost certainly already passed “peak farmland”, because of the rate at which fertilisers are improving yields. (Or we would have done if not for biofuels projects.) We will feed nine or ten billion people in 2070 from a considerably smaller acreage than we need to feed seven billion today.
7. Land sparing is already occurring on a grand scale. Forest cover is increasing in many parts of the world, from Scotland to Bangladesh. Wildlife populations are booming in Europe (deer, bears, boar, otters), in the polar regions (walrus, seals, penguins, whales) and North America (turkeys, coyotes, bison, geese) and this is happening fastest in the richest countries. According to one recent report, animal populations grew by 6 per cent in Europe, North America and Northern Asia between 1970 and 2012, while shrinking in tropical regions. There is almost a perfect correlation between the severity of conservation problems and poverty, because the richer people get, the less they try to live off the land and compete with nature — the less they seek bushmeat and charcoal from the forest.
8. Once again, Africa may spring a pleasant surprise. Over the past four decades agricultural yields in Africa hardly budged while they doubled or quadrupled in most of Asia. That is almost entirely down to a dearth of fertiliser and it is beginning to change. If African yields were to rise, the acreage devoted to farmland globally would start to fall even faster, releasing more and more land for “re-wilding”. The great herds and flocks that so delight Sir David would reassemble in more and more places. The happy conclusion is that making people better off and making nature better off are not in opposition; they go hand in hand.
数学部分
数学整体难度一般，特别是无计算器的section1，题目都非常简单。有计算器的相关计算题目计算量也要求不高。没有太偏太冷门的知识点，考察的基本都是老师上课所讲的重要数学知识点。
比较突出的考了多道两条线交点的题目，有两条直线也有直线跟曲线的交点。截距的考察也很多，有考察截距的值，也有经典的截距实际意义考察。另外还有两道关于二元一次方程有无数解和没有解的情况。另外需要注意的考点：
二次函数定义和顶点、交点式
指数的定义
相似三角形
虚数的定义和计算
tenth、hundredth的四舍五入
单位换算
文：沃邦SAT教研组
