820一战果断悲剧，开始放狗

q1weruqt

820一战果断悲剧，开始放狗 狗主考了50 22 610 verbal 果断悲剧了。
之前我还信誓旦旦的说820肯定不换的，白白的顶了4页，无颜见xdjm了。

一 先说作文
1，一个岛国B 5年前开了一个足球比赛，最近三年内游客人数涨了25%。所以说为了促进更多的游客来，我们B应该举行更多的比赛。才能带了更多的游客数量和利润。（红字我觉得有的写）
2，issue 因为business 和 technology 的原因导致大部分人人们生活quality的提高，agree or disagree 。

二 verbal
我做的不太好随便说两个阅读吧
（一）（确认gwd原题一字不差）
1段，1975china 测量山的高度问题，和1872england 用一样的老方法。描述了一下老方法怎么样。
2段，china但是改进了老方法几个方面：
（1）什么光的角度的影响，china带很多气象仪器。 mirage（海市蜃楼）这这次印象深
（2）因为不能确定哪个point最高，所以中国在n个point上都插了旗子
（3）实在想不起来了
（有题，问原文的china哪个改进方面except ：选项有海市蜃楼，很多point 我选的是仪器不都精密，可能选的不对，等大N验证）
（二）
水稻问题，我GF跟我一个考场也考到了，讲的是root吸收改善。
1段,说有个非洲国家干旱，粮食怎么少，闹饥荒。
2段，有个植物经过试验可以适应干旱，root可以吸收更深的地方。
3段，对非洲国家农民的好处......忘记......这说农民们用这种植物不用满足世界粮食需求，只要自己吃饱就可以了(有考题，但我实在看不懂).......忘记 .......the end

三 数学比较多我先吃个饭回来再说哈

好吃完了
数学开始
1，
   ）
8,13楼

版主help，不知道怎么的把刚才的删掉了，怎么办呢，7道题还要我再打一遍吗

感觉怪对不起大家的，我还是把7道题再打一遍吧怨念中。。。。。


1 5个点p1 p2 p3 p4 p5 坐标分别是 （-1 ，-1）（1，0）（-1，1）（1，2）（-1，3）
则pn的表达式为：（-1^n, n-2）

2,已知2个直角，AE=AB =8,DE=2,  BC=CD =13(CD=13我看到gmcc在吐槽) 求图形面积？
方法一海伦公式直接算：
假设在平面内，有一个三角形，边长分别为a、b、c，三角形的面积S可由以下公式求得：  
　　S=√[p(p-a)(p-b)(p-c)]  
　　而公式里的p为半周长：  
　　p=(a+b+c)/2
方法二：题目中是特殊数字，用辅助线作图更加简单一点：

DF=8 BF=6 BD=10 作CG垂直于BD,BG=5 CG=12，后面自己算吧，表问我了。

3，这道题本来没有题目的。只有一个式子，式子具体我忘记了，化简之后是y=-x^2+2x+3 画图如上，且有个条件大于0 求以（-1,0）（3,0）为底，顶点在抛物线上的三角形的面积。大家自己算吧很简单了。

4，s t u三个组成集合有八种（s,t,u）（s，t）（t，u）(s，u)  (u)  (t)  (s)  (空 )  问stuvw五个组成的集合里没有t的有几个。
解法一：高度概括法：有t与无t几率相等 所以1/2没有
解法二：都画出来，我画了2^5个32个，算了算确实是16个

5，三个数中任何2数的乘积都可以被第三个数整除，则200，70，n中 n的最大值与最小值之商是多少。
解答：70*n要是被200整除则n至少有2和10两个factor 200*n被70整除则n至少有7这个factor 那么n=7*10*2=140 200*70可以被n整除，n最小是140。 n最大的话则应该等于200*70=14000; 14000/140=100

6，ds：公司买衣服上货是40美元一件，上了100件，求利润占销售额的比值：
A  20%的衣服卖76美元，80%卖61美元。
B  总共卖出64000美元
each is sufficient

7,求整数n的最小值满足
n=16（题目的数字我记得很清楚哈哈。）

8，
（数字准确一字不差）
题目：3^(8n+3)， n是正整数，那么末尾数是多少。
答案： 3的乘积的个位数的循环是3 9 7 1 共四位 所以8n就不用考虑了，余3是第三位 所以答案是7

9，一个公司共有100人，、其中64%的人工资在50，000以下，60%的人的工资在40,000以上，有知11%的人工资为43，000，5%的人的工资为49，000。问平均工资 有两个答案靠谱45500 和46000 不知道怎么做。。。。。

累死了，自己不小心删掉了，哎又打了一遍，还是一句话，攒人品吧回馈大家。筒子们加油。

附gf的放狗链接，跟我一天考的。
http://forum.chasedream.com/GMAT_Math/thread-584224-1-1.html#last

joey409

哇，楼主你第一篇是GWD里的，好快乐啊

sevenmiles

------------------------------------------------------------------------------------------------------------
71.    GWD-26-Q32-Q35 中国人改进了英国人测量珠峰高度的方法
  In 1975 Chinese survey teams          1975年中国人量度珠峰，使用的
remeasured Mount Everest, the highest      技术和1852年英国人的相同。
of the Himalayan mountains. Like the       他们从海岸线开始行进，每隔几
Line  British in 1852, they used the age-old     步量度一次上升高度。
(5) technique of “carrying in” sea level:
  surveyors marched inland from the
  coast for thousands of miles, stopping
  at increments of as little as a few feet
  to measure their elevation, and mark-
(10) ing each increment with two poles.
To measure the difference in elevation      使用工具：置于两根杆中间的望
between poles, surveyors used an          远镜。
optical level—a telescope on a level
base—placed halfway between the
(15) poles. They sighted each pole, read-
ing off measurements that were then
used to calculate the change in eleva-
tion over each increment. In sight of        看到峰顶时，他们使用经纬仪
the peaks they used theodolites—          探定顶点的上升。
(20) telescopes for measuring vertical and
  horizontal angles—to determine the
  elevation of the summit.
The Chinese, however, made            但中国人努力改正英国人的误
efforts to correct for the errors that         差。
(25) had plagued the British. One source        误差1：由于不同温度压力造成
of error is refraction, the bending of        的光折射。这会产生峰顶幻象。
light beams as they pass through air
layers of different temperature and
pressure. Because light traveling.
(30) down from a summit passes through
many such layers, a surveyor could
sight a mirage rather than the peak
itself. To reduce refraction errors, the       解决：1，减少通过经纬仪的光，
Chinese team carried in sea level to         2，使用天气气球测量温度压力。
(35) within five to twelve miles of Everest’s
   summit, decreasing the amount of air
that light passed through on its way to
their theodolites. The Chinese also
launched weather balloons near their
(40) theodolites to measure atmospheric
temperature and pressure changes
to better estimate refraction errors.
Another hurdle is the peak’s shape.        误差2：测量者们的测量点不同。
When surveyors sight the summit.
(45) there is a risk they might not all
measure the same point. In 1975
the Chinese installed the first survey       解决：安装一个红色灯塔。
beacon on Everest, a red reflector
visible through a theodolite for ten
(50) miles, as a reference point. One           误差3：海平面不平。
more source of error is the uneven-
ness of sea level. The British
assumed that carrying in sea level
would extend an imaginary line from
(55) the shore along Earth’s curve to a
point beneath the Himalaya. In
reality, sea level varies according
to the irregular interior of the planet.
The Chinese used a gravity meter to        解决：用重力计改正误差。
correct for local deviations in sea level.
-------------------------------------------------------------
Q32
It can be inferred from the passage that
refraction would be most likely to cause
errors in measurements of a mountain’s
elevation under which of the following
conditions?
A.    When there are local variations in sea
level
B.    When light passes through humid air
C.    When theodolites are used relatively far
from the mountain peak.
D.    When weather balloons indicate low air
temperature and pressure.
E.    When sea level has been carried in to
Within five to twelve miles of the summit.

-------------------------------------------------------------
Q33
Which of the following best describes the
purpose of the sentence in lines 23-25
(“The Chinese…the British”)?
A.    Introduce a definition
B.    Signal a transition in focus
C.    Summarize the preceding paragraph
D.    Draw a contrast between two different
theories.
E.    resent information that contradicts the
Preceding paragraph.

----------------------------------------------------
Q34
Which of the following is NOT mentioned as a
possible source of error in surveying mountain
elevation?
A.    Mirages
B.    Refraction
C.    Inaccurate instruments
D.    Variations in sea level
E.    Uncertainty about the exact point to be
Measured

---------------------------------------------------
Q35
The primary purpose of the passage is to
A.    provide details about improvements to a
process
B.    challenge the assumptions underlying a
new method
C.    criticize the way in which a failed project
was carried out
D.    call for new methods to solve an existing
problem
E.    explain the theory behind a new technique

gych89

lz加油

cowdoin

第一篇不是珠穆朗玛兄弟么 LZ 你没好好做GWD哦

逃惘

lz确认一下考古啦~~~虎摸~~~

yolanda330

请方便的童鞋把二楼的答案贴出来下，我在外面的，不方便下载谢谢了

xiaosunyang111

第二个阅读好像也在哪里看到过呀...印象很深的一句话是:"那种水稻不仅可以养活非洲人,甚至全世界"(大概是这个意思)...和LZ说得正相反=.=。。。。。

q1weruqt

哇，楼主你第一篇是GWD里的，好快乐啊

-- by 会员 joey409 (2011/8/20 18:47:29)

哭了，我就复习了一个月，没看过gwd。。。。。。。。。。。。。。。。。啊啊啊

q1weruqt

------------------------------------------------------------------------------------------------------------
71.    GWD-26-Q32-Q35 中国人改进了英国人测量珠峰高度的方法
  In 1975 Chinese survey teams          1975年中国人量度珠峰，使用的
remeasured Mount Everest, the highest      技术和1852年英国人的相同。
of the Himalayan mountains. Like the       他们从海岸线开始行进，每隔几
Line  British in 1852, they used the age-old     步量度一次上升高度。
(5) technique of “carrying in” sea level:
  surveyors marched inland from the
  coast for thousands of miles, stopping
  at increments of as little as a few feet
  to measure their elevation, and mark-
(10) ing each increment with two poles.
To measure the difference in elevation      使用工具：置于两根杆中间的望
between poles, surveyors used an          远镜。
optical level—a telescope on a level
base—placed halfway between the
(15) poles. They sighted each pole, read-
ing off measurements that were then
used to calculate the change in eleva-
tion over each increment. In sight of        看到峰顶时，他们使用经纬仪
the peaks they used theodolites—          探定顶点的上升。
(20) telescopes for measuring vertical and
  horizontal angles—to determine the
  elevation of the summit.
The Chinese, however, made            但中国人努力改正英国人的误
efforts to correct for the errors that         差。
(25) had plagued the British. One source        误差1：由于不同温度压力造成
of error is refraction, the bending of        的光折射。这会产生峰顶幻象。
light beams as they pass through air
layers of different temperature and
pressure. Because light traveling.
(30) down from a summit passes through
many such layers, a surveyor could
sight a mirage rather than the peak
itself. To reduce refraction errors, the       解决：1，减少通过经纬仪的光，
Chinese team carried in sea level to         2，使用天气气球测量温度压力。
(35) within five to twelve miles of Everest’s
   summit, decreasing the amount of air
that light passed through on its way to
their theodolites. The Chinese also
launched weather balloons near their
(40) theodolites to measure atmospheric
temperature and pressure changes
to better estimate refraction errors.
Another hurdle is the peak’s shape.        误差2：测量者们的测量点不同。
When surveyors sight the summit.
(45) there is a risk they might not all
measure the same point. In 1975
the Chinese installed the first survey       解决：安装一个红色灯塔。
beacon on Everest, a red reflector
visible through a theodolite for ten
(50) miles, as a reference point. One           误差3：海平面不平。
more source of error is the uneven-
ness of sea level. The British
assumed that carrying in sea level
would extend an imaginary line from
(55) the shore along Earth’s curve to a
point beneath the Himalaya. In
reality, sea level varies according
to the irregular interior of the planet.
The Chinese used a gravity meter to        解决：用重力计改正误差。
correct for local deviations in sea level.
-------------------------------------------------------------
Q32
It can be inferred from the passage that
refraction would be most likely to cause
errors in measurements of a mountain’s
elevation under which of the following
conditions?
A.    When there are local variations in sea
level
B.    When light passes through humid air
C.    When theodolites are used relatively far
from the mountain peak.
D.    When weather balloons indicate low air
temperature and pressure.
E.    When sea level has been carried in to
Within five to twelve miles of the summit.

-------------------------------------------------------------
Q33
Which of the following best describes the
purpose of the sentence in lines 23-25
(“The Chinese…the British”)?
A.    Introduce a definition
B.    Signal a transition in focus
C.    Summarize the preceding paragraph
D.    Draw a contrast between two different
theories.
E.    resent information that contradicts the
Preceding paragraph.

----------------------------------------------------
Q34
Which of the following is NOT mentioned as a
possible source of error in surveying mountain
elevation?
A.    Mirages
B.    Refraction
C.    Inaccurate instruments
D.    Variations in sea level
E.    Uncertainty about the exact point to be
Measured

---------------------------------------------------
Q35
The primary purpose of the passage is to
A.    provide details about improvements to a
process
B.    challenge the assumptions underlying a
new method
C.    criticize the way in which a failed project
was carried out
D.    call for new methods to solve an existing
problem
E.    explain the theory behind a new technique

-- by 会员 sevenmiles (2011/8/20 18:49:54)

没错一摸一样，我求个答案看我对了几个，题目就是这四个没错的。