[原创]机经

moomoo

西部时间31日下午5-9点，应该算是八月的机经了吧

AA

6. The following appeared as part of an article in a magazine devoted to regional life.
“Corporations should look to the city of Helios when seeking new business opportunities or a new location. Even in the recent recession, Helios’s unemployment rate was lower than the regional average. It is the industrial center of the region, and historically it has provided more than its share of the region’s manufacturing jobs. In addition, Helios is attempting to expand its economic base by attracting companies that focus on research and development of innovative technologies.”

AI

没有见过，可能是新题吧。大意是：scientists are finding new standards and recommendations whether products are harmful or beneficial for the environments. Companies should resist changing their products and processes in response these recommendationsn and wait untile they become government regulations.

MATH:

少量7月jj，不少都改了一些数字，例如：

1. 50millions people in 6 cities 那一道，人口最少的city的population给的不是百分比，而是2million,我差点看成2%了（人口第四多的city给的还是21%);

2. DS: M, N integers, is M^N integer? 1) N^M > 0; 2) N^M integer.

新题：

1. DS: appartments avg. rent $600, what is the percentage of appartments with rent under $600? 1) exactly half of the appartments with rent under $500;  2) the rents of differnt appartments are either $450, $550, $650, or $800.

这道题我算了8分钟才把 1)+2) 的正反例子都找出来。

2. [(1+5^(1/2))/2]^2 + [(1-5^(1/2))/2]^2 = ?

3. DS: right triangle, area = ? 1) sum of two shorter edge is 15; 2) longest edge is 12.

4. DS: a line in x-y coordinate system goes through the origin and point (a,b), is a < b? 1) slope < 0; 2) a < 0

5. DS: formula for profit margin (M) for Sales (S) and Cost (C) is M = (S-C)/S, is M in 1999 more than 10% more than M in 1998? 1) S in 1999 is twice S in 1998; 2) C in 1999 is 50% more than C in 1998.

[加一道] how many intersections can a triangle has with a circle? A) 1, 2, 3; B) 1, 2, 3, 6; C) 1, 2, , 4, 6; D) 1, 2, 3, 4, , 6; E) 1, 2, 3, 4, 5, 6

Verbal:

SC - Sloth那道GWD

   [加一道]具体的题目不记得了，但是考到了 "sb do sb in" 的用法,大家查一下do in吧。e.g. "The humans will either do themselves in by war or disease"

CR - 保险那道

RC - 大恐龙那道；powder那道; CO2那道；还有一道新题，不误导大家了。

[此贴子已经被作者于2006-8-2 8:07:14编辑过]

顾风

谢谢楼主分享。。

顾风

1. DS: appartments avg. rent $600, what is the percentage of appartments with rent under $600? 1) exactly half of the appartments with rent under $500;  2) the rents of differnt appartments are either $450, $550, $650, or $800.

这道题我算了8分钟才把 1)+2) 的正反例子都找出来。

p1+p2+p3+p4 = 1

p1 = .5

p2+p3+p4=.5

p2*550+p3*650+p4*800 = 600- 225 =375

p2*22+p3*26+p4*32 = 15

此解为任意解。。。

如 p2 = .1,则p3 = 0, p4=0.4

  p2 = .008 则 p3 =x,p4=y...

silviaqiu

这个是我做的答案不知道对不对啊

1、E

2、3

3、C

4、C

5、E

open to discuss

sen4sun

sb do sb in?

Ville

以下是引用silviaqiu在2006-8-1 17:26:00的发言：

这个是我做的答案不知道对不对啊

1、E

2、3

3、C

4、C

5、E

open to discuss

同意！

benjaminshufe

以下是引用silviaqiu在2006-8-1 17:26:00的发言：

这个是我做的答案不知道对不对啊

1、E

2、3

3、C

4、C

5、E

open to discuss

同意！

superPPDD

是选E吗

benjaminshufe

以下是引用顾风在2006-8-1 16:53:00的发言：

1. DS: appartments avg. rent $600, what is the percentage of appartments with rent under $600? 1) exactly half of the appartments with rent under $500;  2) the rents of differnt appartments are either $450, $550, $650, or $800.

这道题我算了8分钟才把 1)+2) 的正反例子都找出来。

p1+p2+p3+p4 = 1

p1 = .5

p2+p3+p4=.5

p2*550+p3*650+p4*800 = 600- 225 =375

p2*22+p3*26+p4*32 = 15

此解为任意解。。。

如 p2 = .1,则p3 = 0, p4=0.4

  p2 = .008 则 p3 =x,p4=y...

这部分怎么算的阿？请NN解释

挥着猪翅膀

thanks