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【考团】2019年首场SAT考情速递

2019-03-11 09:40:10 来源:江博教育 作者:江博教育

2019年首场SAT考试在香港落下帷幕。江博教育的考生们在刘雨佳老师及其他老师的带领下顺利考完,一身轻松的走出了考场。

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今年3月的SAT考试,亚博一共启用4个场馆。据老师介绍亚太的卷子整体难度中等,阅读和语法的整体难度一般,文章也比较容易读懂,考点都比较常规。相信这一次所有在江博教育学习之下, 踏踏实实经过模考和练习之后培养了最佳状态的学员们, 应该会有一个很好的表现。

3月9日SAT考试关键词

1.重复school day test原题,小面积传播,影响不大,取消成绩可能性较小。

2.试卷整体难度较简单,基本反映都能做完题。没有出现新的知识点或难题。

 

3.估计curve又是比较惨烈!!细心的孩子又占优势了!!

阅读部分

阅读概述

总体来说,大家反映考试难度正常,时间相对充裕, 模考程度在1400分左右的,平时做题比较紧的学生反映都能提前1-3分钟做完。可见文章难度相对不高,且大家比较头痛的单词题的难度也属于正常,没有偏词怪词。唯一要警惕的是选项里可能会含有比较多的易混选项以及最后curve的整体压分。

第一篇小说讲述的是学生与教授的故事。

由于一开始描绘了女主人公对教授的崇拜,所以很多学生反映,刚开始阅读以为这是一个师生恋的故事……结果后面的情景其实讲述的是学生和教授的特点,以及两者之间的差异。题目相对不难,基本都能一一定位。

第二篇历史本文为本杰明·富兰克林1787年的演讲

富兰克林的演讲在16年的真题和可汗里都曾经考过,基本都是针对英国统治美国,或者是对政权组织形式的内容发表看法。本文也不例外,尤其是考虑到1787年为美国制宪年代,所以话题的内容也不难预测。

富兰克林讨论了两个情感: ambition(野心) & avarice(贪婪)。 这两种情绪不可避免地导致政府中出现针对职位的争斗。而且参与争斗的人都是会不择手段获取权利和金钱的人。而对权利和金钱的渴望, 统治阶级对金钱的欲望来自于对人民的税收,这与人民的根本福祉相悖。

第三篇科学:

本文取自理查德·道金斯的The Greatest Show on Earth: The Evidence for Evolution

本文主要话题还是常考的动物进化,凡是涉及这类文章的都存在比较多的“差异”和“缺陷”的考点,同学在阅读的时候一定要读细,不然很容易遗落信息。

本文讲述一种动物由于迁徙,科学家推测这两地的动物基因上一样,但这样的推测是有问题的(缺陷),因为进化是一直在进行中。

第二段开始讨论区别, 就形体和猎物的差别进行了对比,一个食草,一个吃昆虫。

第三段讨论食草对咬合肌的大小影响。因为植物细胞壁,所以需要更强大咬合肌来进食。

第四篇社科

The passage is adapted from Wray Herbert: On second thought: outsmarting your mind's hard-wired habits.

本文是社科类常考的内容:人类的经济行为economic behavior。本文讨论了人类的一种选择倾向:即根据对事物和货币的熟悉度,赋予该物品更高的价值。为了证实这个观点,文章做了三个实验:给了志愿者们带有的华盛顿的头像的一美金硬币,另一个是含有Susan B头像的一美金硬币,得出结论Susan不值钱。为了进一步证明的该行为的普遍性,实验人员给了被实验者并不存在的印有杰斐逊头像的2 dollars (现实中不存在), 人们由于对其不熟悉,给予其的购买力价值相对较低。

第三个实验进一步对熟悉度的偏好进行验证。给予被实验人两组物品清单,一组熟悉,另一组不清晰,被实验者做出了与上述两个实验相同的结果,即熟悉度与赋值高低正相关。

第五篇科学双篇

Passage 1 Robert Hazen的Genesis: The Scientific Quest for Life's Origin

Passage 2 Biochemists Resurrect: molecular fossils: findings challenge the attempts about origins of life

学生反映本篇双篇文章文字较难。由于是基因科学,所以涉及大量不熟悉的生词以及很多生僻的概念。这类文章对学生的阅读能力和逻辑能力(能否把信息融汇在一起)要求较高。但两篇文章由于观点对立鲜明,观点的把握其实难度不高。有学生表示很像托福的综合写作,一篇是阅读,一篇是听力。

第一篇文章讲述的是科学家对到底是DNA产生蛋白质,还是蛋白质产生DNA这个问题陷入了鸡生蛋蛋生鸡的无解循环。最后发现了RNA解决了这一问题,实现了理论大和谐(RNA World Theory)

第二篇文章反驳了第一篇文章的观点,及RNA World Theory不存在,进而由Carter教授提出了一个新的观点,即Urzymes,并由此推断出此物质可能与远古生命的存在形态相关。

阅读原文:

1. 第1篇原文:

“Make Your Home Among Strangers”

BY Capo Cruet

I scanned my mind for what this could be about. Had I left a supply closet or fridge unlocked? Had I open centrifuged one of the specimens she'd asked me to look at when it was supposed to be closed centrifuged? Had she glanced over my shoulder

at my class notes and seen the list of embarrassing questions only I seemed to have and which I'd scribbled under the heading Things to Look Up Later? I'd been so careful around her so far, hoping to make up for all the times I raised my hand and revealed how little I knew, all the times she caught me pretty much fondling the equipment -the elegant pipettes, the test tube racks that kept everything snug and in place, the magical autoclave incinerating all evidence of use and making everything perfect over and over again. It could've been any or all of these things: she was so smart that I was certain she'd put these observations together and conclude, long before I figured it out, that though I was eager and good at keeping contamination at bay, I wasn't cut out for the hard sciences. I wrote her back, composing my e-mail in a word processing program first

to make sure the green squiggly line of grammar impropriety didn't show up under every clause, and confirmed I could meet with her Monday at noon, right after class. She wrote back a cryptic, That will be more than fine.

The three hours of that week's lab class felt like a goodbye. I stacked each petridish as if it were the last time I'd be allowed to handle those delicate circles of glass. I swished saline solution for longer than was needed, looked at the agar coating the bottom of plates as if its nutrients were intended for me and were about to be withheld. When a question popped into my head, I kept my hand down and didn't even bother to write it in my notebook.

I watched Professor Kaufmann for clues all class but saw nothing, though she'd already proven herself good at masking frustration with kindness. You could drop an entire tray of beakers, and she would smile and in a too-high voice say, That's OK! I sometimes thought I was the only one in the class who saw through her, could tell how very upset she was at all that shattered glass on the floor: I knew it from the way she'd

say Hmmm as she accosted the student culprit with a broom and stood over them, pointing out a missed shard here, a tiny speck there. She'd wait until they put the broom

away before noticing another piece, then instruct them to go back to the closet and bring the broom again.

I approached her lab bench once everyone had left. She was scribbling something

on some graph paper, and I glanced at what she wrote once I was closer. Whatever

it was, it was in German- probably not a good sign- and it was underneath a series

of equations that meant nothing to me and which were in no way related to our

class.

-Liz! she said. Oh, super! Come here, please!

She stood and let me have her seat. I sat there for a good minute, watched her keep working as if she hadn't just asked me to sit down. Her pen dug into the paper and I wondered if she had two brains-wondered if there were a way I could split my own mind like that, be in one place but let my mind hang out wherever it wanted.

She slapped the pen down on her notebook, and without even apologizing for the awkward three or so minutes we'd been right next to each other but not speaking, she said, Thank you for staying after class. I see you're eager

to know what this is about.

-Yes, I said. I tried to keep my back straight; I found trying to maintain good posture more painful than just slouching. Even seated on her high stool, I was still looking up at her. I said, Is everything okay?

-Yes, of course. Thank you for asking.

I figured then that I should stop talking lest I incriminate myself, but she

smiled at me and nodded as if I'd kept speaking, as if I was saying something at that very

moment

-Yes, so, she said. You are enjoying the lab so far?

-I love it, I blurted out. It's my favorite class this semester.

-Super! she said. That's super.

She nodded some more. After a few additional seconds of painful silence and sustained eye contact she asked, Are you interested in becoming a research

scientist?

I thought I wanted to be a doctor, but that didn't seem

like the right answer.

-Yes, I said. I am.

-Good, super. Because there is something you should do then, a program.

She slipped a hand beneath her pad of graph paper and slid out a glossy

folder. I closed my eyes, not wanting to look at it: here it was, the remedial program for

students needing extra help, forced in front of me like that list of campus resources I'd

printed out last semester as my only hope. The folder was white with a crimson stripe

down the front of it, a gold logo embossed at its center.

-This is connected to my research group. It's a summer position at our field laboratory off the coast of Santa Barbara, in California. You would be perfect for it.

2. 第2篇原文:

“A Speech that Benjamin Franklin delivered to the United States Constitution Convention”

BY Benjamin Franklin

And of what kind are the men that will strive for this profitable preeminence, through all the bustle of cabal, the heat of contention, the infinite mutual abuse of parties, tearing to pieces the best of characters? It will not be the wise and moderate, the lovers of peace and good order, the men fittest for the trust. It will be the bold and the violent, the men of strong passions and indefatigable activity in their selfish pursuits. These will thrust themselves into your government and be your rulers. And these, too, will be mistaken in the expected happiness of their situation, for their vanquished competitors, of the same spirit, and from the same motives, will perpetually be endeavoring to distress their administration, thwart their measures, and render them odious to the people.

Besides these evils, sir, tho we may set out in the beginning with moderate salaries, we shall find that such will not be of long continuance. Reasons will never be wanting for proposed augmentations; and there will always be a party for giving more to the rulers, that the rulers may be able, in return, to give more to them. Hence, as all history informs us, there has been in every state and kingdom a constant kind of warfare between the governing and the governed; the one striving to obtain more for its support, and the other to pay less. And this has alone occasioned great convulsions, actual civil wars, ending either in dethroning of the princes or enslaving of the people.

Generally, indeed, the ruling power carries its point, and we see the revenues of princes constantly increasing, and we see that they are never satisfied, but always in want of more. The more the people are discontented with the oppression of taxes, the greater need the prince has of money to distribute among his partizans, and pay the troops that are to suppress all resistance, and enable him to plunder at pleasure. There is scarce a king in a hundred who would not, if he could, follow the example of Pharaoh-get first all the people's money, then all their lands, and then make them and their children servants for ever.

3. 第3篇来源:

“The greatest show on Earth : the evidence for evolution”

BY Richard Dawkins

4. 第4篇来源:

“on second thought: outsmarting your mind's hard-wired habits”

BY Robetr M. Hazen

5. 第5篇原文:

PASSAGE 01

“The Scientific Quest for Life's Origin”

BY Robert Hazen

PASSAGE 02

“Molecular fossils: findings challenge the attempts about origins of life”

BY University of North Carolina School of Medicine

Now, research from UNC School of Medicine biochemist Charles Carter, PhD, appearing in the September 13 issue of the Journal of Biological Chemistry, offers an intriguing new view on how life began. Carter's work is based on lab experiments during which his team recreated ancient protein enzymes that likely played a vital role in helping create life on Earth. Carter's finding flies in the face of the widely-held theory that Ribonucleic Acid (RNA) self-replicated without the aid of simple proteins and eventually led to life as we know it.

In the early 1980s, researchers found that ribozymes -- RNA enzymes -- act as catalysts. It was evidence that RNA can be both the blueprints and the chemical catalysts that put those blueprints into action. This finding led to the “RNA World” hypothesis, which posits that RNA alone triggered the rise of life from a sea of molecules.

But for the hypothesis to be correct, ancient RNA catalysts would have had to copy multiple sets of RNA blueprints nearly as accurately as do modern-day enzymes. That's a hard sell; scientists calculate that it would take much longer than the age of the universe for randomly generated RNA molecules to evolve sufficiently to achieve the modern level of sophistication. Given Earth's age of 4.5 billion years, living systems run entirely by RNA could not have reproduced and evolved either fast or accurately enough to give rise to the vast biological complexity on Earth today.

“The RNA world hypothesis is extremely unlikely,” said Carter. “It would take forever.”

Moreover, there's no proof that such ribozymes even existed billions of years ago. To buttress the RNA World hypothesis, scientists use 21st century technology to create ribozymes that serve as catalysts. “But most of those synthetic ribozymes,” Carter said, “bear little resemblance to anything anyone has ever isolated from a living system.”

Carter, who has been an expert in ancient biochemistry for four decades, took a different approach. His experiments are deeply embedded in consensus biology.

Our genetic code is translated by two super-families of modern-day enzymes. Carter's research team created and superimposed digital three-dimensional versions of the two super-families to see how their structures aligned. Carter found that all the enzymes have virtually identical cores that can be extracted to produce “molecular fossils” he calls Urzymes -- Ur meaning earliest or original. The other parts, he said, are variations that were introduced later, as evolution unfolded.

These two Urzymes are as close as scientists have gotten to the actual ancient enzymes that would have populated Earth billions of years ago.

“Once we identified the core part of the enzyme, we cloned it and expressed it,” Carter said. “Then we wanted to see if we could stabilize it and determine if it had any biochemical activity.” They could and it did.

Both Urzymes are very good at accelerating the two reactions necessary to translate the genetic code.

“Our results suggest that there were very active protein enzymes very early in the generation of life, before there were organisms,” Carter said. “And those enzymes were very much like the Urzymes we've made.”

The finding also suggests that Urzymes evolved from even simpler ancestors -- tiny proteins called peptides. And over time those peptides co-evolved with RNA to give rise to more complex life forms.

In this “Peptide-RNA World” scenario, RNA would have contained the instructions for life while peptides would have accelerated key chemical reactions to carry out those instructions.

语法部分

Passage 1:

Dickens takes the stage

文章着名作家狄?斯,他?仅创作?很多诗歌,而且他把表演和诗歌结合,通过舞台表演的方式呈现。在表演的时候,与观众互动,并且成为?朋友,并且接受观众的建议。

Passage 2:

Fritz Pollard Beyond the Gridiron

FritzPollard是着名的足球运动员和教练,他退役后从事各种职业来促进美国黑人的职业发展。他做过作家,还做过黑人的经纪人,从事过税务?作等,并且推动其他黑人艺术的发展,在消除种族歧视方面作出巨大贡献,他认为这是足球事业的成功带来的成就。

Passage 3:

Why we still need mapmkers

讲的是随着科技的发展,对于制作地图的人的需求减少,但是只要掌握?合适的技术,就业机会还是比较广阔的。

以前地图制作对个人能?技术有较高要求,随着技术发展,人们可以快速定位,但是如果想要地图上?准确的信息,还是需要人实地考察的,使得信息?加准确化。

Passage 4:

The art of a cat's lap

讲的是,研究猫喝牛奶时舔舌头的频率。Smith发现猫?奶是从舌头下面流下去。于是开始研究猫的舐食?为,通过慢动作回放,得出结论:猫喝水的确是通过舌头下面流下去的。之后,MIT研究人员也证实?Smith的部分。

研究结果,同时提出猫的舐食?为的速度和准度也起到?很重要的作用。舔舐速度和受到的重?影响成反比。

数学部分

1. 整体情况

本次考试难度中等, 与OG 的前四套练习相接近, 低于 201701北美 (OG 8th) 和 201705北美/亚洲卷。 题目长度适中, 但是有少部分题目存在对细节的考察, 对表格和图像的相关问题提出了一定要求, 但是整体来时不能使用计算器的数学部分计算量不大。 此外, 再次考到boxplot(盒式图)。 总体来说, 整张试卷没有偏题和怪题。

2. 关于阅读和理解

本次考试的题干阅读难度较低, 考察容易混淆的数学表达 (倍数和比例等) 的应用题时, 题干描述相对常规, 对认真模考过历届真题的考生而言不困难。

3. 关于数学知识点

3.1 代数方面: 二元一次方程组 (equation solving) 在两个部分涉及均较多, 求解难度中等; 此外也考察了高次方程韦达定理(Vieta's Formulas)的应用; 多项式恒等与无穷解的关系; 根式方程(Root Equation)的求解, 考察了多次方程的上下约减。 没有考察二元方程解的个数 (number of solutions) 的问题, 复数 (complex number) 的相关计算, 以及一元二次方程判别式法的应用。

3.2 函数方面: 多道题目考察一次函数 (linear function) 应用题问题, 即斜率 (slope) 和截距 (intercept) 的实际意义 (而且是 x-intercept), 其他求解截距的题目可以直接读图得到答案; 一道题考察指数函数 (exponential function)的列式, 学生可以用代入数字的方式较快得到答案。 第4部分倒数第二题应用题通过了售卖商品求解最大收入的例子, 考察二次函数的顶点和最值 (vertex and extremum of quadratic function), 难度适中。

3.3 几何方面: 考察了圆弧中角度制 (degree) , 弧度制 (radian)之间的换算; 考察了相似三角形对应边比例的计算, 考察一次一次函数和对应的线性区域 (linear inequalities and area) 问题; 考察了三角形外角等于与它不相邻的两个内角和; 考察了球半径成本增长时, 体积, 面积的变化情况。

3.4 统计方面: 除了传统的中位数之外, 本次考试依然考察了样本估计(Sample Estimation), 重点考察的是抽样方式与抽样结果的适用范围。

4. 关于细节和细心

本次考试的很多题目都会有小陷阱, 典型的如题干中时间单位为 feet, 而问句形式为 inch等。 此外, 无计算器的 section 3 中也有一些简单的方程求解和代数题, 对考生的计算能力提出一定要求。

 

作文部分

本次考试作文考了2篇,亚博的考生普遍考的是第一篇。写作原文如下:

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整体说来,此次考试题目出都非常纯粹,阅读的考法与正常做题时情况类似,寻证题、主旨题都还是老套路的考核方式;语法常规的关于标点、内容过渡、句子结合等类型的题目都考到了,词汇题acquainted,considerate,consolidated.considerable,accumulate,sturdy、rough这些词汇不算特别难,所以相应的丢分率会下降。

根据江博教育考团的行程安排,学员们将在3月10日吃过早饭后,前往香港机场,办理乘机手续,并回到北京。舟车劳顿的学员们终于可以放下提着的那颗心,好好的休息一下。小博在此也期待着考生们的优异成绩。别急,成绩出来第一时间就给你们分享。

 

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