没分手放个小狗回寝吃饭

ggggggbbbbbbbb

v24q48-v25q50-v28q50绝望的三刷，不过这次考试前我终于把og的逻辑做完一遍了。。争取月末四刷之前好好背背单词再把阅读和语法刷一遍吧orz我一定要700
QUANT（脑子不太好记不住具体数，抱歉啦）
1.补一下之前狗的六棱锥那道题，AB=12， ∠ACB=60°，求底面面积 (六边形是hexagon不认识也没事反正给图了）



2.
abcdef6个人做圆桌，问a挨着bf，b挨着cf ，c挨着bd ，d挨着ce，e挨着df，f挨着ae的可能性
答案有1/120，1/180，还有三个是 指数分之一

（这道我真的算到死亡，排列组合高中就不会）


2
AB两艘船都正向着港口开，给了AB的距离，AB分别的速度，问A是不是比B先到

（1）AB两艘船的路线是垂直的
（2）A到港口的距离


3
一个整数被3除余2，被4除余1，问可以出现在以下哪个范围？
给了五个范围，类似10.5-15， 17-23。。。这种（数瞎编的）
一共就10到60多这么大的范围，数也不多。
学渣不太会算这种，一般数这么少的我都毫不犹豫的列举，不算费时间

5
jj上23题
我遇到的分母是4^(cr+ds)，abcd都是数字

6
Income-deduction=taxable income
一个人有deduction,有deduction交的税比没deduction交的税少多少多少钱，问什么我也忘了等补充吧orz   （这道挺烦的）
1 Taxable income excess某个数的部分要交0.28税
2 她的taxable income 是xxx

7
有24个数，个位是？(已知，数字忘了)，十位数各有三分之一是0,1,2，问这些数总和的十位数字是几

8
AB=EF=AB间的距离(就是CD)=一个数，求阴影面积






（顺便这个几边形，提供一个懒得背单词的学渣分辨方法：四五开头和四杀五杀一样，六七边型都是he开头，six有个x所以六边形是hex，没x的是七边形heptagon, 八边形octagon总被拿出来说和十月混所以我就记住了，九边型Nonagon九也是n开头，十边形decagon-decade十年）不要笑话我我真的不爱背单词哈哈哈哈哈

AWA

一个酒店经理说他们的complimentary service，像早餐健身房之类的这种，成本太高了，最后都转嫁到价格上了，有很多顾客花了这部分钱但也不需要享受这些服务。

另一个叫ambassador的酒店就把住宿价钱和这些服务收费分开了，虽然A酒店这些服务都挺贵的，但是这部分钱就不需要让那些不享受服务的顾客承担了。

所以为了吸引顾客和增加边际收益(marginal benefit)，他想把取消complimentary service，改成收费，降低普通房钱

（刚查了一些complimentary是免费赠送的意思）

RC

1 讲的blue diamond （我v才28，不敢多说怕误导你们啦，求考古

第一段有一句是在博物馆里很久了 但是科学家没太关注（大概这个意思，这句问了作用）

最后一段说用两种波长的光，一个蓝绿一个reddish照它，只有一种能怎样怎样

先答的verbal有点慌而且词汇量不行，这篇完全看不懂 哭

2

考了upstream，狗挺全了

3

河岸那个也考了

4

还有一个类似考古类的，一屏，还是求考古~

就是原本认为某个地方的人是在某时期突然开始注重艺术文化这些东西的，因为在那个时期里有另一伙外来的人来到这个地方了（可能相互促进了吧我没读太细）

第二段说有新发现，这群人在那个时期之前就有用贝壳之类的东西做的装饰品了

billyisfragile!

是原文吗？

Hued Afterglow: Fingerprinting diamonds via phosphorescence
BY SID PERKINS
12:37PM, JANUARY 9, 2008
Magazine issue: Vol. 173 #2, January 12, 2008, p. 19

The eerie phosphorescence displayed by a rare form of blue diamond can be used as an easy, cheap, and nondestructive way to identify individual gemstones and to distinguish natural blue diamonds from synthetic ones, analyses suggest.

第一段：一个叫PH什么的现象可以解释为“glow in the dark”他发生在蓝宝石身上，（宝石gemstone）。

Phosphorescence, a "glow-in-the-dark" process in which energy previously absorbed by a substance is released slowly in the form of light, is common in a certain type of blue diamond. After exposure to light, these type IIb diamonds, which have boron- and nitrogen-containing impurities, softly glow in colors ranging from blue through pink to fiery red, says Sally Eaton-Magaña, a chemical engineer at the Gemological Institute of America in Carlsbad, Calif. The orange-red glow from the 45.52-carat Hope Diamond, a type IIb gemstone on display at the Smithsonian Institution in Washington, D.C., is visible for as long as a minute after the lights go out.

第二段：这个现象在强烈的光照下会边orange red。虽然这种现在科学家都知道但很容易被忽视，这里有高亮。
一个叫E什么的女科学家用2种气体还是什么东西检测到底是真的宝石还是人造宝石。检测过程还测压力什么的3种方法。

Although millions of visitors to the Smithsonian's National Museum of Natural History see the Hope Diamond each year, the gem has received remarkably little scientific attention. While a set of 239 colored diamonds known as the Aurora Heart Collection was on loan to the museum in 2005, Eaton-Magaña and her colleagues studied the set's type IIb diamonds as well as the Hope Diamond and the museum's 30.62-carat Blue Heart Diamond. They also studied the blue diamonds in the Aurora Butterfly Collection in New York City. In all, the researchers studied 67 natural blue diamonds, 3 synthetic ones, and a gray diamond that other researchers had turned blue via treatments at high temperature and high pressure. In some of their tests, the scientists shone a high-intensity ultraviolet light on each gemstone for 20 seconds and then measured its phosphorescence at various wavelengths.

Reddish phosphorescence in diamonds was thought to be rare, says Eaton-Magaña. However, the tests showed that all natural type IIb diamonds glow for several seconds at two visible wavelengths—a 500-nanometer, greenish-blue light and a 660-nm reddish one. The relative strengths of the phosphorescence at the two wavelengths dictate the hue of a stone's overall glow. Differences in the peak intensities of those emissions and the rates at which they wane provide a virtual fingerprint for each stone, the researchers report in the January Geology.

Neither the synthetic stones nor the color-enhanced gray gemstone glowed at the 660-nm wavelength. The new technique's ability to distinguish between artificial diamonds and the true blue gems "solves one of the big problems in diamond markets," says Stephen E. Haggerty, a geologist at Florida International University in Miami.

Tests on the Hope Diamond suggest that variations in phosphorescence from one part of a large gem to another are negligible, says Eaton-Magaña. Scientists would therefore still be able to identify the pieces of a large diamond if it were stolen and cut into smaller stones.

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bzy! 发表于 2018-11-4 20:08
是原文吗？

Hued Afterglow: Fingerprinting diamonds via phosphorescence

很像！！！

弗雷泽631

谢谢楼主！（为什么我每次考完就什么都不记得了。。。

＊开心果＊

感谢分享！               

liyu96

感谢！

杀G取卵92

ggggggbbbbbbbb 发表于 2018-11-4 20:30
很像！！！

很像说明。。。是变体吗

ggggggbbbbbbbb

杀G取卵92 发表于 2018-11-5 09:54
很像说明。。。是变体吗

因为我阅读很差完全没看懂记不太清楚，这篇大意和内容分布很像我觉得有时间的话可以看看的~

杀G取卵92

ggggggbbbbbbbb 发表于 2018-11-5 09:57
因为我阅读很差完全没看懂记不太清楚，这篇大意和内容分布很像我觉得有时间的话可以看看的~ ...

感觉你和我之前的状态很像 还是要尝试静下心来看文章 哪怕有生词看不懂 还是要去分析文章结构和主旨 加油！

ggggggbbbbbbbb

杀G取卵92 发表于 2018-11-5 10:05
感觉你和我之前的状态很像 还是要尝试静下心来看文章 哪怕有生词看不懂 还是要去分析文章结构和主旨 加油 ...

嗯嗯谢谢！！我之前阅读全靠jj但每次都会有两篇没看到的，以后还是靠自己吧今天准备开始跟小分队试试了哈哈