本次北美地区的12月考试非常有特点，阅读和语法部分的整体难度中等，数学部分的难度较低。以我们的经验判断，这次参加了12月北美SAT考试的考生，会遇到本年度EBRW部分相对友好的Curve（即阅读错7-8题可以得到原始分35分，语法35分以上维持每一题10分的容错率）
第一部分：阅读
阅读部分总体难度中等偏上，文章难度分布很有特点，无论是从文本解析还是题目选项辨析，基本呈现从文学到历史到三篇科学难度递减的特征，其中比较性阅读出现在第二篇，这对于考前缺乏认真全面的模考的同学来说在心态上是一个不小的挑战。两篇科学文章，一篇讲wild plants中diversity和productivity的关系并通过field experiment验证得出新的发现及其解释，另一篇讲通过carbon确定生物起源的时间文章重点介绍具体方法，内容和题目设置都比较常规，没有出现难度较高的假设题，也没有难度较高的推理+询证题的组合，对于时间节奏把握较好的考生是得分点。值得注意的是社会科学文章出现在第四篇，与很多真题的难度设置略有不同，这篇讲语言的声音和词义关系的文章内容结构和题目设置都相对简单，图表题设置有一定难度。
第一篇文章大意：
选自Dreaming in Cuban by Cristina Garcia
我是一名艺术生，妈妈要开bakery店 让我画幅画。
开始我担心妈妈会半夜进到我房间偷看话（这是她一贯的传统），所以设计了陷阱以便于发现她是否真的进来。但是醒来检查“陷阱”，发现妈妈并没有偷看。
开业前一晚，我有些失眠，夜里进到爸妈房间想对她说画不下去，但是当妈妈醒了握着我的手，我原本准备好的话没说出口。
我男朋友帮我把画提前放到店里，用布遮住。第二天开业，放了音乐 妈妈穿着整齐在店里免费发放甜点。在没揭开画布时，我想象着会听到掌声。但是事实上，有个人指着我的画说“垃圾”，我妈当时看到画时，脸色都变了。但是听到别人这么说我的画时，她拿着包把那个人打走。
这一刻我感受到了妈妈的protection。
考察到了词汇题strAIght=conventionally
第二篇文章阅读原文（历史比较性阅读）
P1（作者爱因斯坦）观点：
现在大国认为 要通过加强核武器建设来进行国防。作者不支持该观点，认为通过武器获取来的和平不牢固，需要有一个权威性机构来解决应对冲突争端，同时国与国之间要有mutual trust。
Albert Einstein Warns of Dangers in Nuclear Arms Race
Is there any way out of this impasse created by man himself? All of us, and particularly those who are responsible for the attitude of the U.S.A. and the U.S.S.R., should realize that we may have vanquished an external enemy, but have been incapable of getting rid of the mentality created by the war. It is impossible to achieve peace as long as every single action is taken with a possible future conflict in view. The leading point of view of all political action should therefore be: what can we do to bring about a peaceful coexistence and even loyal cooperation of the nations? The first problem is to do away with mutual fear and distrust. Solemn renunciation of violence (not only with respect to means of mass destruction) is undoubtedly necessary. Such renunciation, however, can be effective only if at the same time a supranational judicial and executive body is set up empowered to decide questions of immediate concern to the security of the nations. Even a declaration of the nations to collaborate loyally in the realization of such a "restricted world government" would considerably reduce the imminent danger of war.
In the last analysis, every kind of peaceful cooperation among men is primarily based on mutual trust and only secondly on institutions such as courts of justice and police. This holds for nations as well as for individuals. And the basis of trust is loyal give and take.
P2（作者总统里根）观点：
通过核武器巩固国防是正确的，我们不发起战争，只是通过核武器进行防御。不同时期有不同的防御手段。苏联现在核武器发达，如果我们遏制本国的核武器发展，那么是在给对方机会。
Reagon:Address to the Nation on Defense and National Security
The defense policy of the United States is based on a simple premise: The United States does not start fights. We will never be an aggressor. We maintain our strength in order to deter and defend against aggression -- to preserve freedom and peace. Since the dawn of the atomic age, we've sought to reduce the risk of war by maintaining a strong deterrent and by seeking genuine arms control. ``Deterrence'' means simply this: making sure any adversary who thinks about attacking the United States, or our allies, or our vital interests, concludes that the risks to him outweigh any potential gains. Once he understands that, he won't attack. We maintain the peace through our strength; weakness only invites aggression. This strategy of deterrence has not changed. It still works. But what it takes to maintain deterrence has changed. It took one kind of military force to deter an attack when we had far more nuclear weapons than any other power; it takes another kind now that the Soviets, for example, have enough accurate and powerful nuclear weapons to destroy virtually all of our missiles on the ground. Now, this is not to say that the Soviet Union is planning to make war on us. Nor do I believe a war is inevitable -- quite the contrary. But what must be recognized is that our security is based on being prepared to meet all threats. There was a time when we depended on coastal forts and artillery batteries, because, with the weaponry of that day, any attack would have had to come by sea. Well, this is a different world, and our defenses must be based on recognition and awareness of the weaponry possessed by other nations in the nuclear age. We can't afford to believe that we will never be threatened. There have been two world wars in my lifetime. We didn't start them and, indeed, did everything we could to avoid being drawn into them. But we were ill-prepared for both. Had we been better prepared, peace might have been preserved. For 20 years the Soviet Union has been accumulating enormous military might. They didn't stop when their forces exceeded all requirements of a legitimate defensive capability. And they haven't stopped now. During the past decade and a half, the Soviets have built up a massive arsenal of new strategic nuclear weapons -- weapons that can strike directly at the United States. As an example, the United States introduced its last new intercontinental ballistic missile, the Minute Man III, in 1969, and we're now dismantling our even older Titan missiles. But what has the Soviet Union done in these intervening years? Well, since 1969 the Soviet Union has built five new classes of ICBM's, and upgraded these eight times. As a result, their missiles are much more powerful and accurate than they were several years ago, and they continue to develop more, while ours are increasingly obsolete.
第四篇文章阅读原文：（讲sound&meaning之间的联系）
https://www.scientificamerican.com/article/r-is-for-red-common-words-share-similar-sounds-in-many-languages/
第二部分：语法
整体难度中等，很多值得的点如纯语法题需要仔细精确理解句子含义做句子结构分析，篇章逻辑题更加关注对于文章和段落本身内部结构的理解，对于introduction/conclusion几个关系的把握等都是西点致美教育在全程班课上重点强调的奥义和在历次考试情况分析中反复说明的内容。
难点题型：纯语法题型主要是标点符号与句子结构和限定性非限定性的判断
与文章相关的题型：
1.词汇题（考察有hamper/subdue, celebrated,cite/site形近词辨析， shocking/unexpected等)
和固定搭配（be based on)
2. Focus题（句子加减题，根据上下文内容进行句子增加删减）
3. 逻辑词题
4. 关系题(introduction/conclusion/previous/next sentence)
5. 简洁性原则的判断
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