北美首战15/11，740 M50 V39. 一点点感想和JJ。感谢家里LD的大力支持

刚刚考完，北美首战15/11，740 M50 V39. 一点点感想和JJ。感谢家里LD的大力支持，N年前就劝我考掉G，T，当时没有听，后悔啊。还要感谢我的芊芊宝宝。并同时感谢CDer的帮助。
首先准备TOEFL1个半月，失败（89），准备12月初再战。对我来说可能T更头疼，作文，口语都要加强。GMAT近2个月。感觉时间有点久，后面给拖皮了，效率很低。下载了很多资料都没有看，连分类也没有来得及做。OG10看了近2遍CR，1遍RC和CR，大全只做了一些SC里比较重要的部分，GWD只做到16套，后面的没有时间作了（开始每套错大概12道左右，最高18道，后来3套稳定到6-8道），后来发现后面几套在考试里出现的概率要大一些。PREP 2次，第一次680，第二次770（那次数学错了1道，不过还是51）。我还卸掉重装了一次，可惜也没有时间来做了。感觉PREP非常象真实考试，可以多练一下感觉。

AA 112. The following appeared in a memo to the Saluda town council from the town’s business manager.
“Research indicates that those who exercise regularly are hospitalized less than half as often as those who don’t exercise. By providing a well-equipped gym for Saluda’s municipal employees, we should be able to reduce the cost of our group health insurance coverage by approximately 50% and thereby achieve a balanced town budget.”

AI 21. “Job security and salary should be based on employee performance, not on years of service. Rewarding employees primarily for years of service discourages people from maintaining consistently high levels of productivity.”

由于打字慢，加上刚刚开始看错AI题目，发挥不大好，字数估计只有300多一点，很担心。

数学不是很难，很多数字题目，几乎没有排列组合和概率（很遗憾，觉得这是我比较强的地方。）做起来状态不是很好（可能和作文的感觉有关），看起来几乎每道题都很简单。一路点下来，最后一道还有26分钟，但是结果只有50分，非常遗憾，中间肯定有地方看错或者掉到陷阱。所以后来的DX如果觉得数学是强项的话，记得不要做的太快，也尽量不要受作文的影响。
由于做的有点快，加上年纪大记性差，只记得几道：
1（最后一道），a/b+b/a=1, 问下列哪一个成立：A, a-b=0 B，a+b=0 C, a^2+b^2=1... 答案是A。
2，a和b分别是（348656789）^2的个位和十位数，问下列谁成立1，a=1 2, b=2, 3, b=4
   A, 1 only, B, 2 only C 1和2 D 1和3 答案是C（次序可能有差别）。
有几道是JJ上已经有的，就不重复了。有一道感觉比较怪，就是鸟飞湖的那道。
3，鸟的平均速度是18米每秒，问湖是不是宽度小于21KM。
  （1）， 鸟用了不到20分钟飞完
  （2）， 鸟用了不到0.4小时。我选的的是E。因为20分钟鸟可以飞21.6公里，无法知道确切结果。不过当时感觉题目问的很怪，也许那里出了问题。

语文部分没有什么可以记得很清楚的。（请原谅，年纪确实大了）。简单说一下，
RC
1， IRELAND妇女研究那道；
2，美国经济以后更要依靠技术进步而不仅仅是资金和劳力的增加；
3，物理常数和弦理论（String Theory）那道。
还有一道确实记不得了。

CR
1，80KM OR 120KM 铁路那道，结论新列车不能缩短时间因为铁轨最高只能承受80KM，问削弱。这次的答案基本可以确定是，铁路的SCHEDULE不能按照列车的最高时速来定，因为列车不能设计一直在最高时速运行。
2，原题　GWD-28-Q19
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?
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 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.　（D）

LZ还是很强！恭喜！