Sailing to success(快乐备考,携手同行)

fantasy06

以下是引用lxzjojo在2007-1-8 14:16:00的发言：
哈，目前好像还米有这样的总结，等你战胜了G之后来总结一稿，造福之后的千千万万CDer如何？！

 好主意也！

XVVjing61

fanfan mm:

牛人的讲解没有现成的，就在那些讨论帖里。

闹闹，这么晚了还没睡啊，看来是要拼命阿

注意身体啊，真的不能多熬夜，我要去睡觉了，喝了红牛，一天没睡了。

wei_wangyan

才把CD14看完，眼睛有点酸，可是还不困，想再看点新的数学机经吧。

大家晚安啦。

fantasy06

以下是引用wei_wangyan在2007-1-8 17:34:00的发言：

看看吧，情绪还是受GWD影响，说不在意那结果是假滴，不是真滴。。。

偶刚刚做完CD14，错了一大堆：SC-3，CR-6（一半），RC-6（有一篇全军覆没！）。

超时5分钟，前面的速度掌握还不错，做完30题时还有17分钟，可是17分钟我是做不完11道题的，所以必然超时了，赶时间，最后一篇阅读根本没读懂，全错，今天不会猜了，咔咔~~~~~最后11道题里错了6个！！！

现在对逻辑有点回天无力的感觉了，不知道是怎么回事，总是把选项都给排除掉，还是感觉逻辑越来越难读懂，现在又对逻辑怕得要死，像回到了当初一样，但当时看OG时不懂是因为没思路，现在是因为读不懂。唉，究竟该怎么办啊？？？

有人说是因为我对长难句比较绕的那一种句子不熟，建议看杨鹏难句（偶曾经看过那个），可是，读语法的句子也没觉得非常吃力啊，读阅读也感觉还凑合啊？怎么一读逻辑就晕晕晕晕晕！

救命。。。。。。。。。。。。。。

闹闹呀，先甭管错题总数，你的语法真的很稳，这是一颗定心丸，pace也开始提上来了，冲击高分的可能就更大了。

逻辑是不是因为对某种思路不适应呢？就像我，作must true, support 题的所有有关比例，增减，集合问题通通晕菜，选项读好几分钟都绕不出来。

我语法是连着错呀，估计上回就这样载进低分区了，哎。。。

fantasy06

请教大家：这题为什么选A不选E?

GWD-12-Q29:

The Earth’s rivers constantly carry dissolved salts into its oceans.  Clearly, therefore, by taking the resulting increase in salt levels in the oceans over the past hundred years and then determining how many centuries of such increases it would have taken the oceans to reach current salt levels from a hypothetical initial salt-free state, the maximum age of the Earth’s oceans can be accurately estimated.

 

Which of the following is an assumption on which the argument depends?

 

1. The quantities of dissolved salts deposited by rivers in the Earth’s oceans have not been unusually large during the past hundred years.

2. At any given time, all the Earth’s rivers have about the same salt levels.

3. There are salts that leach into the Earth’s oceans directly from the ocean floor.

4. There is no method superior to that based on salt levels for estimating the maximum age of the Earth’s oceans.
5. None of the salts carried into the Earth’s oceans by rivers are used up by biological activity in the oceans.

wei_wangyan

fanfan这道题有lawyer非常之精彩的解释，之所以精彩，是因为他先选了E，分析了一通（下面这段里面所说的“原来的错误”就是选E时的错误考虑，刚好你可以看一下，是否和你想的一样。其实我当时也选的E呢）。后来又选了A，有了更加详细的分析。我贴给你看看，免得你找了。

答案应该是A。

原来的错误来之于对原文的错误理解： over the past hundred years 是指过去的一百年。如果是过去几百年，应该为over the past hundreds of years。一个hundred有加“S”，一个没有。所以原文的resulting increase 是指过去一百年的盐分增加量，而不是简单的过去某个时间段的盐度增加量。后者的理解导致了我以前的错误分析和结论。SORRY。

原文的主题意思：先算出过去一百年的盐度增加，再算出海洋从盐度为零到目前盐度需要花多少个世纪（一个世纪正好一百年）的这种增加量。

算法为：目前盐度/过去100年的盐度增加量=多少个世纪从零盐度到目前盐度。

该算法的假设：过去100年的盐度增加量可以当作速率，即每个100年的盐度增加量是一样的或低估了（因为低估，算出的时间比实际大）。

结论。这种算法可以精确算出海洋最大年龄

A。将A取非，则过去一百年的盐度增加量作为速率是高估了，则算出年龄比实际小。结论不成立。故为答案

E。取非。有些盐被消耗掉。如果消耗掉的盐发生在过去的一百年，则过去一百年的盐度增加量作为速率是低估了。这样反而支持结论，所以不是假设。如果消耗掉的盐发生在过去一百年以外，则无关。因为不在计算范围内。

wei_wangyan

大全-18-15.
                    Left-handed persons suffer more frequently than do right-handed persons from certain immune disorders, such as allergies. Left-handers tend to have an advantage over the right-handed majority, however, on tasks controlled by the right hemisphere of the brain, and mathematical reasoning is strongly under the influence of the right hemisphere in most people.

If the information above is true, it best supports which of the following hypotheses?

(A) Most people who suffer from allergies or other such immune disorders are left-handed rather than right-handed.

(B) Most left-handed mathematicians suffer from some kind of allergy.

(C) There are proportionally more left-handers among people whose ability to reason mathematically is above average than there are among people with poor mathematical reasoning ability.

(D) If a left-handed person suffers from an allergy, that person will probably be good at mathematics.(C)

(E) There are proportionally more people who suffer from immune disorders such as allergies than there are people who are left-handed or people whose mathematical reasoning ability is unusually good.

 

有谁做了这个题了？不明白C是怎么得出来的。。

以前常常感觉相对比较简单的must be true/conclusion题，现在也越来越难了，总有数学计算在里面！

fantasy06

早呀 闹闹 你真是early bird  太感谢了！

不出你所料，我果然是那么掉到陷阱里去了。精彩的解释打印下来了，连同昨晚jojo的，收藏了。

下午 CD9_GWD11 超时7分钟， 错15个， SC5 CR6 RC4。 CR又错了两道关于数学的（ratio一个，以上的浓度一个）。 reading 那篇大陆漂移学说的看得特明白，做题时就省去了定位，结果错了3/4，看来我读文章如果不最后回顾，根本就读不出清楚的脉络和结构。大家是不是都能active reading, 如何做到读文时就能清楚地把握行文方向呀？

fantasy06

我来试试吧：

C 补全了是：There are proportionally more left-handers among people whose ability to reason mathematically is above average than there are (left-handers) among people with poor mathematical reasoning ability.

原文：I. weakness of left-handers:
        Left-handed persons suffer more frequently than do right-handed persons from certain immune disorders, such as allergies.

II. strenghth of left-handers:
        Left-handers tend to have an advantage over the right-handed majority, however, on tasks controlled by the right hemisphere of the brain,

III. an example of strenghth: and mathematical reasoning is strongly under the influence of the right hemisphere in most people.

II & III ---------> Left-handers tend to have an advantage over the right-handed majority, on mathematical reasoning ---------->left-handers account for a greater portion among people good at math than among people not good at math, i.e. 选项 C.

[此贴子已经被作者于2007-1-9 10:05:17编辑过]

wei_wangyan

fanfan的推理看起来很有道理，可是偶不明白C在说什么，能翻译一下吗？还有，那个proportionally怎么讲呢？

说到什么active reading，偶是一点感觉都没有，偶现在恐怕连passive reading都不是吧？从来没有养成读完一段后回顾一下大意的习惯（偶怎么觉得几乎所有GWD文章都只有一段啊！晕！！！）。除非是比较简单的文章，读完能知道在说啥，脑子里能有个脉络，大部分文章都是读的云里雾里，做题时必须要回原文找才行，也有几次是觉得自己懂了，没有回原文定位，导致做错呢。

速度就是提不上去。不知道还有救没？

上午做了一组逻辑大全，速度倒是快点了，错的也不多，但是真是觉得大全比GWD逻辑简单，至少生物类的少。偶怎么就觉得逻辑需要做新题才能有感觉，才能知道自己阅读理解和逻辑思维能力有没有进步呢？只看原来的错题脑子不太容易活跃。  可是，快没新题了。。。