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[转帖]4.25机经

作文:

AI---31. “Financial gain should be the most important factor in choosing a career.”

AA---125. The following appeared as part of the business plan of the Capital Idea investment firm.

“Across town in the Park Hill district, the Thespian Theater, Pizzazz Pizza, and the Niblick Golf Club have all had business increases within the past two years. Capital Idea should therefore invest in the Roxy Playhouse, the Slice-o’-Pizza, and the Divot Golf Club, three new businesses in the Irongate district. As a condition, we should require them to participate in a special program: Any customer who patronizes two of the businesses will receive a substantial discount at the third. By motivating customers to patronize all three, we will thus contribute to the profitability of each and maximize our return.”

数学:
   

1.   PS: 涛涛28- Q33:               150, 200, 250, n

Which of the following could be the median of the 4 integers listed above?

                                   I.                    175

II.                 215

III.               235

Answer: C.   I and II only

2. PS: 题目大概是:an=2an-1 - x, n>=2, a3=27, a9=99, x等于多少?

   我用了非常愚蠢的方法硬算,结果出来的答案跟选项都对不上,郁闷死了。
   

   有一种算法是: (1) a9-2a8=-x

                               (2)  a8-2a7=-x

                               (3)  a7-2a6=-x

                               (4)  a6-2a5=-x

                               (5)  a5-2a4=-x

                               (6)  a4-2a3=-x

(1)+ (2)*2+(3)*2^2+(4)*2^3+(5)*2^4+(6)*2^5 这样,等式就变为:

a9-2^6a3=-(1+2+2^2+2^3+2^4+2^5)x    x=181/7, 不是整数!
   
答案的选项都是整数。

大家到时候再仔细看看吧,这个算法比硬算节约很多时间。

3. DS: 有一个跟4月份总结的数学15题很像
   
。不过题目变了。 说是一个什么俱乐部,有三项活动,总共有300个会员,其中1/3参加游泳,2/3参加网球,3/10参加有氧运动。问同时参加三项运动的有多少人?

   160 people attend exactly two of the three activities

     (2) 35 个人同时参加游泳和网球。
   

选(A,条件1可以,条件2 不可以。

逻辑:  碰到一道GWD

GWD25-Q36

The chemical adenosine is released by brain cells when those cells are active.Adenosine then binds to more and more sites on cells in certain areas of the

brain, as the total amount released gradually increases during wakefulness. During sleep, the number of sites to which adenosine is bound decreases. Some

researchers have hypothesized that it is the cumulative binding of adenosine to a large number of sites that causes the onset of sleep.

Which of the following, if true, provides the most support for the researchers’ hypothesis?

A.    Even after long periods of sleep when adenosine is at its lowest concen-tration in the brain, the number of brain cells bound with adenosine remains

very large.

B.     Caffeine, which has the effect of making people remain wakeful, is known tointerfere with the binding of adenosine to sites on brain cells.

C.     Besides binding to sites in the brain, adenosine is known to be involved in biochemical reactions throughout the body.

D.    Some areas of the brain that are relatively inactive nonetheless release some adenosine.

E.     Stress resulting from a dangerous situation can preserve wakefulness even when brain levels of bound adenosine are high.

Answer: B.其他的选项不确定,只记得有B.

作文:只记得两篇

1。讲techno nationalism,Techno-globalism 。首段将有这么两种理论,有一道题问到Techno-globalism具有的特点except....,第二段讲techno nationalism

一道题问到作者对于techno nationalism得态度。第三段讲Techno-globalism ,其中讲到跨国公司要开拓海外市场已补偿研发的投入。有一infer题问到跨国公司这么做说明什么。

大家到时候再仔细看,这篇文章不难也不长。

2。讲一个什么seedling的两种理论,文章很长,很着急得扫完了,记得不是很清楚。大致是首段介绍了这两种理论的内容,一种说生长的情况是什么跟周围的植物竞争的结果。接下来有人做了一个实验观察两种植物的生长情况,一年两季的植物,结果两季的生长情况并不完全一样,然后分别用两种理论解释这种现象产生的原因。

感觉数学要计算的量很大,也可能是我脑子比较笨算得方法不对。

大家好运。

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