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Plankton generally thrive in areas of the ocean with sufficient concentrations of certain nitrogen compounds near the surface, where plankton live. Nevertheless, some areas, though rich in these nitrogen compounds, have few plankton. These areas have particularly low concentrations of iron, and oceanographers hypothesize that this shortage of iron prevents plankton from thriving. However, an experimental release of iron compounds into one such area failed to produce a thriving plankton population, even though local iron concentrations increased immediately.

Which of the following, if true, argues most strongly against concluding, on the basis of the information above, that the oceanographers' hypothesis is false?

正确答案: D

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11月20日北京晚场 Q50 V39 TOTAL 730

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楼主
发表于 2006-11-21 01:06:00 | 只看该作者

11月20日北京晚场 Q50 V39 TOTAL 730

刚刚考完两个多小时,赶紧上来写,籍此感谢CD,感谢以前所有上来写机经的xdjm,大家加油啊!

一、作文

1. Argumet: The following appeared as part of an article in the education section of a Waymarsh
     
City newspaper.

“Throughout the last two decades, those who earned graduate degrees found it very difficult to get jobs teaching their academic specialties at the college level. Those with graduate degrees from Waymarsh
    
University had an especially hard time finding such jobs. But better times are coming in the next decade for all academic job seekers, including those from Waymarsh. Demographic trends indicate that an increasing number of people will be reaching college age over the next ten years; consequently, we can expect that the job market will improve dramatically for people seeking college-level teaching positions in their fields.”

2.  Issue:   A company’s long-term success is primarily dependent on the job satisfaction and the job security felt by the company’s employees.”

二、数学,不少本月机经。

1. 某个三位数N,位数相乘是54,求个位?

(1) N>960

(2)三个位数之和为16

这题应该A

我的方法:54 因数分解:1*2*3*3*3*3

所以符合提干所说的位数相乘是54的可以是:

1*6*9(相加为16)    组合为169196196961(符合条件1)、691619    

2*3*9 (相加为14)          

3*3*6(相加为12)

              符合条件2的可以是:169 196  691  619   916  961,不唯一,所以条件2不对。选A

 

 

 

2. 2^k是否可以被10整除?

1k可被10整除

 2k可被4整除

 〔D]

 〔D]

3. A 公司有一个mail list,上有X 个地址要寄信;B公司有一个mail list,上有有Y 个地址要寄信,如果这两个mail list integrate 的话,则有K 个地址要寄信(没有重叠的),然后好像给出一个条件是X+Y=2K, K=? (后面记不请了)

 

 

 

4.  已知X^100,  X^X=10^K, k=?   102

 

 

 

 

 

 

5. 长方形UVAB ,三角形UQB
   
线 UB 为底边,点Q 在长方形里,已知UV=8, 问点Q 到直线VU 的距离   (不会帖图,下面的凑合着看吧,几个I表示长方形另外两条边)

  V _____________ A

   I                            I

   I             Q            I

   I_____________  I

  U               B

 

   1)长方形的周长=40

    2)三角形UQB的面积=××

E

 

6.  在一个坐标轴里,已知点A1,-3),点C84)和点Bro),并且点BA和到C的距离相等,问r=?

    5

 

7.   在一个坐标轴里,点ABC 是一个长方形的三个定点,已知AB的坐标(在同一个区间),问点C的××?

    1)点C到点A 的距离是××

     2)点C到点B的距离是××

      我觉得选〔E〕因为即使两个条件加起来也还是不确定,点C可以在直线AB上面,也可以在直线AB下面(不知道

     说清楚了没有)

 

8.   m,p, s and v are positive integers. m/p < s/v, which of the following must be between m/p

and s/v?

I. (m+s)/(p+v)

II. ms/pv

III. s/v-m/p

 之前的机经说是onlyI,这是我最后一题,试了几个数,选了I和II

9. 本月110DS:说开车240mile, 求全程平均速度
   (1)已知前160mile速度为v
             (2)  
160mile速度也为v
     
E

 

  阅读 

1. Hospital chain 那篇

   补充以下:第一段
  
提出现象,好象为了解决美国医务费用高,所以由一个新的organization run

                  第二段  这个organization 如何如何,通过买其它的医院,如何如何。它提出一个Hospital chain

                  第三段,这个organnization的不足,关键是不重视顾客的satisfaction(考点)。举例护士和医生没有服务好,如何如何。

2.美国的妇女的到选举权对美国politics的影响那题(see 本月机经)

3. 物理铉那题

 

四、逻辑

1.  有一个是说一个国家打算引进时速120km的列车替代80km的旧列车,但这不能缩短旅途的时间因为现有铁轨使得列车不能超过80km/h。选削弱。我也选了新列车可以缩短中途maintenance的时间

 

2.某国将香烟税提高到每包10元钱。该国预计这个措施既可以增加香烟的税收,也可以使该国的香烟总消耗量下降,问加强。以前的机经选的是:该国国人每年花在香烟上的消费总额不变(香烟税增加导致香烟价格上升,总额不变意味着消耗的包数下降;总额不变,其中税收的部分增大,因此税收增加)。但我好像没发现有这个选项,我选了烟民转向吸更贵的奢侈的烟。

 

3.Plankton(浮游生物) generally thrive in areas of the ocean with sufficient concentrations of certain nitrogen compounds near the surface where plankton live. Nevertheless, some areas, though rich in these nitrogen compounds, have few plankton. These areas have particularly low concentrations of iron, and oceanographers hypothesize that this shortage of iron prevents plankton from thriving. However, an experimental release of iron compounds into one such area failed to produce a thriving plankton population, even though local iron concentrations increased immediately.
˙Which of the following, if true, argues most strongly against concluding, on the basis of the information above, that the oceanographers’ hypothesis is false?
A: Not all of the nitrogen compounds that are sometimes found in relatively high concentrations in the oceans are nutrients for plankton.
B: Certain areas of the ocean support an abundance of plankton despite having particularly low concentrations of iron.
C: The release of the iron compounds did not increase the supply of nitrogen compounds in the area.
D: A few days after the iron compounds were released, ocean currents displaced
(移开) the iron-rich water from the surface.
E: The iron compounds released into the area occur naturally in areas of the ocean where plankton thrive.
 
参考答案:D

 

 

 


[此贴子已经被作者于2006-11-21 13:25:21编辑过]
沙发
发表于 2006-11-21 01:21:00 | 只看该作者
沙发,thanks for sharing
板凳
发表于 2006-11-21 01:25:00 | 只看该作者
thank you for sharing
地板
发表于 2006-11-21 04:59:00 | 只看该作者
感谢分享
5#
发表于 2006-11-21 07:28:00 | 只看该作者
恭喜啊!
6#
发表于 2006-11-21 08:58:00 | 只看该作者
恭喜楼主~~!请问楼主感觉实际考试数学难度和模考PREP的数学比较怎样?差别大么?我快考了,PREP数学错一大堆[49,50左右],时间也很赶,就怕到时候发挥不好.谢谢
7#
 楼主| 发表于 2006-11-21 09:11:00 | 只看该作者
以下是引用rokey在2006-11-21 8:58:00的发言:
恭喜楼主~~!请问楼主感觉实际考试数学难度和模考PREP的数学比较怎样?差别大么?我快考了,PREP数学错一大堆[49,50左右],时间也很赶,就怕到时候发挥不好.谢谢

gmat prep还是比较能真实反映实战分数的,难度相当。我两次prep模考的分都没有昨天实战考得高,因为有机经,哈哈--建议各位差不多考的赶紧再熟悉熟悉本月机经,去年同月机经感觉没什么题出现。
8#
 楼主| 发表于 2006-11-21 09:14:00 | 只看该作者

又想起一题:

一个公司的group只有两种人:manager和director,manager的工资range是1000dollar,director工资的range 是3000 dollar,问这个group的工资的range最小是多少?〔3000〕简单吧

9#
发表于 2006-11-21 09:56:00 | 只看该作者
可是我模了两次720了,V和M都错了一堆,都不知道错了哪了,楼主最后几天都怎么复习啊
10#
 楼主| 发表于 2006-11-21 10:04:00 | 只看该作者
最后几天,做了两次prep,练pace,一次640,一次720。继续看本月数学、逻辑、阅读机经(本月开始每天坚持看),再看一下以前做错的题。休息,放松心情。一定不要太紧张了,一紧张就非常影响做题感觉、速度、准确率的。考不好,大不了就重考。
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