07年1月梦队讨论专贴 新增cc的RC突破计划

DJungle

以下是引用ycflypig在2006-11-9 11:36:00的发言：

OG的逻辑简单吗？ 我刚才开始复习CR，还没有找到感觉

自己的主要问题是，有的时候题目读不懂，如果能读懂，答案就好选择了

唉 这是个问题

shinogigi有一篇超牛心经有提到读不懂题的问题，她好像建议可以先看看杨鹏难句，老大不如试试。。

这是shinogigi的帖子：http://forum.chasedream.com/dispbbs.asp?BoardID=34&ID=36773&replyID=&skin=1

wei_wangyan

以下是引用DJungle在2006-11-10 12:09:00的发言：

有人做大全了吗？我刚开始做sc的大全，错的很惨烈。。但最惨烈的是找不到相关的解释。。

比如987里的第三题，谁能指点一下怎么找啊？

我是电脑白吃的说。。

我一开始做大全的时候也很惨烈，慢慢就一般惨烈了。

MM在置顶贴的备考资料里面找一下《大全注释987》，很好用，先参考这个，如果再不明白，再查讨论贴，直接题题查讨论贴比较费时间。

加油！

mymengming

支持支持，请大家在各区专门开贴讨论，这样比较有效率，版主们也好去解题。

祝大家考试顺利！！

cccccc0

To 懒猫：刚才和你讨论的weaken做题方法问题，你说A=>B只要找出C=>B就是weaken了。你看看下面个题目~~~下面这题的答案没有异议的,只是找到简单的题目说说思路

现在做weaken题的时候我觉得我找不准argument，就好比下面这题
93. Dental researchers recently discovered that tooth-brushes can become contaminated with bacterial that cause pneumonia and strep throat. They found that contamination usually occurs after toothbrushes have been used for four weeks. For that reason, people should replace their toothbrushes at least once a month.
Which of the following, if true, would most weaken the conclusion above?
(A) The dental researchers could not discover why toothbrush contamination usually occurred only after toothbrushes had been used for four weeks.

(B) The dental researchers failed to investigate contamination of toothbrushes by viruses, yeasts, and other pathogenic microorganisms.

(C) The dental researchers found that among people who used toothbrushes contaminated with bacterial that cause pneumonia and strep throat, the incidence of these diseases was no higher than among people who used uncontaminated toothbrushes.

(D) The dental researchers found that people who rinsed their toothbrushes thoroughly in hot water after each use were as likely to have contaminated toothbrushes as were people who only rinsed their toothbrushes hurriedly in cold water after each use. C

(E) The dental researchers found that, after six weeks of use, greater length of use of a toothbrush did not correlate with a higher number of bacterial being present.

答案没有什么问题，但我觉得作题的思路比较混乱，你说说看上面这题的argument是什么？
我的理解就是  argument就是：四个星期后牙刷会染菌=〉我们要至少一个月换次牙刷
那么 用染菌的牙刷=〉生病   又是什么？？难道是另一个argument??
而且此时的C答案并没有标明出另外一个东西=>我们至少一个月换次牙刷
也没有表明另外一个东西=>生病
而是得出  用染菌牙刷的人&不用染菌牙刷的人=〉都不会得病~~
所以应该并不是所有的weaken题都是这中思路的吧？？

我想听听你这题的思路呢~~~

cccccc0

好多战友们都开始看数学了阿？？我还没碰过呢~~OG得CR还没有过完一遍ne~~~

Wesleyzhou

找到组织了，和大家共同进步

1/24号考

msn:gmatcracker(A) hotmail.com

上海

gobeyond

以下是引用cccccc0在2006-11-11 0:06:00的发言：

To 懒猫：刚才和你讨论的weaken做题方法问题，你说A=>B只要找出C=>B就是weaken了。你看看下面个题目~~~下面这题的答案没有异议的,只是找到简单的题目说说思路

现在做weaken题的时候我觉得我找不准argument，就好比下面这题
93. Dental researchers recently discovered that tooth-brushes can become contaminated with bacterial that cause pneumonia and strep throat. They found that contamination usually occurs after toothbrushes have been used for four weeks. For that reason, people should replace their toothbrushes at least once a month.
Which of the following, if true, would most weaken the conclusion above?
(A) The dental researchers could not discover why toothbrush contamination usually occurred only after toothbrushes had been used for four weeks.

(B) The dental researchers failed to investigate contamination of toothbrushes by viruses, yeasts, and other pathogenic microorganisms.

(C) The dental researchers found that among people who used toothbrushes contaminated with bacterial that cause pneumonia and strep throat, the incidence of these diseases was no higher than among people who used uncontaminated toothbrushes.

(D) The dental researchers found that people who rinsed their toothbrushes thoroughly in hot water after each use were as likely to have contaminated toothbrushes as were people who only rinsed their toothbrushes hurriedly in cold water after each use. C

(E) The dental researchers found that, after six weeks of use, greater length of use of a toothbrush did not correlate with a higher number of bacterial being present.

答案没有什么问题，但我觉得作题的思路比较混乱，你说说看上面这题的argument是什么？
我的理解就是  argument就是：四个星期后牙刷会染菌=〉我们要至少一个月换次牙刷
那么 用染菌的牙刷=〉??amp;nbsp;  又是什么？？难道是另一个argument??
而且此时的C答案并没有标明出另外一个东西=>我们至少一个月换次牙刷
也没有表明另外一个东西=>生病
而是得出  用染菌牙刷的人&不用染菌牙刷的人=〉都不会得病~~
所以应该并不是所有的weaken题都是这中思路的吧？？

我想听听你这题的思路呢~~~

我的解题思路如下：

1. 我觉得题目的argument是：researcher认为使用了4个星期或以上的牙刷会被细菌contaminate，从而造成pneumonia and strep throat--〉结论：所以大家要至少每月换一次牙刷。

2. C说：researcher发现，用被细菌感染过的牙刷人群有pneumonia and strep throat的比例不比用uncontaminated牙刷的人群高。

3. 翻译一下Ｃ，也就是说有没有pneumonia and strep throat和牙刷是不是被contaminate没有直接关系。

4. 所以削弱了要大家４星期换一次牙刷的结论。

这题的答案选择比较简单。有时候有些削弱题的答案可以是削弱arguement里面任何一点的。只要能对结论产生反作用效果的，应该都可以算是削弱题。

nicholas_du

以下是引用gobeyond在2006-11-11 11:32:00的发言：

我的解题思路如下：

1. 我觉得题目的argument是：researcher认为使用了4个星期或以上的牙刷会被细菌contaminate，从而造成pneumonia and strep throat--〉结论：所以大家要至少每月换一次牙刷。

2. C说：researcher发现，用被细菌感染过的牙刷人群有pneumonia and strep throat的比例不比用uncontaminated牙刷的人群高。

3. 翻译一下Ｃ，也就是说有没有pneumonia and strep throat和牙刷是不是被contaminate没有直接关系。

4. 所以削弱了要大家４星期换一次牙刷的结论。

这题的答案选择比较简单。有时候有些削弱题的答案可以是削弱arguement里面任何一点的。只要能对结论产生反作用效果的，应该都可以算是削弱题。

gobeyond黑侠分析得好清晰阿，pfpf

[此贴子已经被作者于2006-11-12 22:29:49编辑过]

nicholas_du

总结的模式为(a->b)->c

如果能证明a不能推出b,即这个前提条件是不成立的，也能weaken这个argument

gobeyond

以下是引用nicholas_du在2006-11-12 22:29:00的发言：

总结的模式为(a->b)->c

如果能证明a不能推出b,即这个前提条件是不成立的，也能weaken这个argument

smart boy!