07年1月梦队讨论专贴 新增cc的RC突破计划

gobeyond

以下是引用问问在2006-11-22 10:53:00的发言：
。。我买了OG11，开始做黄皮RC，正确率90％。。。是不是开始比较简单。。。

厉害滴。。。

DJungle

以下是引用飞天猪piggy在2006-11-21 23:24:00的发言：

请教大家一道逻辑体(出处是陈向东书p262/40) 找了很多帖子都没找到想要的答案

40.After graduating form high school, people rarely multiply fractions or discuss ancient Rome, but they are confronted daily with decisions relating to home economics. Yet whereas mathematics and history are required courses in the high school curriculum, home economics is only an elective, and few students choose to take it.
Which of the following positions would be best supported by the considerations above?
(A) If mathematics and history were not required courses, few students would choose to take them.
(B) Whereas home economics would be the most useful subject for people facing the decisions they must make in daily life, often mathematics and history can also help them face these decisions.
(C) If it is important to teach high school students subjects that relate to decisions that will confront them in their daily lives, then home economics should be made an important part of the high school curriculum.
(D) Mathematics, history, and other courses that are not directly relevant to a person's daily life should not be a required part of the high school curriculum.
(E) Unless high schools put more emphasis on nonacademic subjects like home economics, people graduating from high school will never feel comfortable about making the decisions that will confront them in their daily lives.

答案选C, 我选了E.

请大家来讨论~

这是一道难题呀，我越想越晕啊，请求援助！！！

[此贴子已经被作者于2006-11-23 12:10:25编辑过]

ycflypig

171. A recent report determined that although only three percent of drivers on Maryland highways equipped their vehicles with radar detectors, thirty-three percent of all vehicles ticketed for exceeding the speed limit were equipped with them. Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.
The conclusion drawn above depends on which of the following assumptions?
(A) Drivers who equip their vehicles with radar detectors are less likely to be ticketed for exceeding the speed limit than are drivers who do not.
(B) Drivers who are ticketed for exceeding the speed limit are more likely to exceed the speed limit regularly than are drivers who are not ticketed.
(C) The number of vehicles that were ticketed for exceeding the speed limit was greater than the number of vehicles that were equipped with radar detectors.
(D) Many of the vehicles that were ticketed for exceeding the speed limit were ticketed more than once in the time period covered by the report.
(E) Drivers on Maryland highways exceeded the speed limit more often than did drivers on other state highways not covered in the report.

这是一道很好的CR题目，我花了很长的时间才慢慢想清楚

最开始我选的A，但是结果是B

第一步读题 是assumptions题目

假设的题目 就是加强结论

愚蠢的认为结论是:

drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.

答案A: 装有雷达的经常超速

3%的车装有雷达, 33%的雷达车被罚超速,=>所有的雷达车爱超速.

而仔细的看题目Clearly 似乎并不是一个结论

而这道题目有一个gap

结论直接将ticket和regularly exceed speed limit联系在一起
需要一个assumption将两个概念联系在一起
所以要选B？？？

唉 还是没想的太清楚，请朋友们帮忙

ycflypig

A雷达，B罚单，C超速
题目告知A－>B（雷达车多拿罚单），结论A－>C爱超速。
前提是B－>C
这样解释 似乎可以解释的通

DJungle

以下是引用ycflypig在2006-11-23 15:24:00的发言：

171. A recent report determined that although only three percent of drivers on Maryland highways equipped their vehicles with radar detectors, thirty-three percent of all vehicles ticketed for exceeding the speed limit were equipped with them. Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.
The conclusion drawn above depends on which of the following assumptions?
(A) Drivers who equip their vehicles with radar detectors are less likely to be ticketed for exceeding the speed limit than are drivers who do not.
(B) Drivers who are ticketed for exceeding the speed limit are more likely to exceed the speed limit regularly than are drivers who are not ticketed.
(C) The number of vehicles that were ticketed for exceeding the speed limit was greater than the number of vehicles that were equipped with radar detectors.
(D) Many of the vehicles that were ticketed for exceeding the speed limit were ticketed more than once in the time period covered by the report.
(E) Drivers on Maryland highways exceeded the speed limit more often than did drivers on other state highways not covered in the report.

这是一道很好的CR题目，我花了很长的时间才慢慢想清楚

最开始我选的A，但是结果是B

第一步读题 是assumptions题目

假设的题目 就是加强结论

愚蠢的认为结论是:

drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.

答案A: 装有雷达的经常超速

3%的车装有雷达, 33%的雷达车被罚超速,=>所有的雷达车爱超速.

而仔细的看题目Clearly 似乎并不是一个结论

而这道题目有一个gap

结论直接将ticket和regularly exceed speed limit联系在一起
需要一个assumption将两个概念联系在一起
所以要选B？？？

唉 还是没想的太清楚，请朋友们帮忙

我觉得这个题目关键在于题目的结论是因果倒置了吧，应该是因为爱超速才去装雷达，而不是装了雷达之后才爱超速。 B正是解决了这个问题，说吃罚单的人比不吃罚单的人爱超速，而题目本身说吃罚单的人里边竟然还有33%是装了雷达探测器的，说明装了雷达的人更爱超速。

继续讨论。

[此贴子已经被作者于2006-11-23 22:21:49编辑过]

sookai

以下是引用DJungle在2006-11-23 12:10:00的发言：

这是一道难题呀，我越想越晕啊，请求援助！！！

我觉得是这样理解的：

原文说：很少有人在高中毕业后谈起乘除和古罗马，但却在生活中需要面对家庭经济的问题。数学和历史在学校都是必修课，家庭经济学却是选修课，很少有学生选修这门课。

A说如果数学、历史不是必修课，就很少学生会选这些课了。这种说法几乎算是推论，不能算是support idea

B的观点可以说是文章没有讨论到的，算是无关选项了

C说，如果“教学生那些生活中正常要面对的问题所涉及的学科”是非常重要的，那么家庭经济学将会是高中一门重要的课程

D明显无关

E说：除非是学校更强调诸如家庭经济课之类的非学术课程，否则从学校毕业的人在面对日常生活时，将永远不会comfortbale..这个说法有些过分，这些人是否舒服，也不是文章所讨论的。

 

所以比较下来，我觉的C还算是比较能support的了

 

我也是刚开始看CR,请大家指正！

cccccc0

以下是引用ycflypig在2006-11-23 15:24:00的发言：

171. A recent report determined that although only three percent of drivers on Maryland highways equipped their vehicles with radar detectors, thirty-three percent of all vehicles ticketed for exceeding the speed limit were equipped with them. Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.
The conclusion drawn above depends on which of the following assumptions?
(A) Drivers who equip their vehicles with radar detectors are less likely to be ticketed for exceeding the speed limit than are drivers who do not.
(B) Drivers who are ticketed for exceeding the speed limit are more likely to exceed the speed limit regularly than are drivers who are not ticketed.
(C) The number of vehicles that were ticketed for exceeding the speed limit was greater than the number of vehicles that were equipped with radar detectors.
(D) Many of the vehicles that were ticketed for exceeding the speed limit were ticketed more than once in the time period covered by the report.
(E) Drivers on Maryland highways exceeded the speed limit more often than did drivers on other state highways not covered in the report.

这是一道很好的CR题目，我花了很长的时间才慢慢想清楚

最开始我选的A，但是结果是B

第一步读题 是assumptions题目

假设的题目 就是加强结论

愚蠢的认为结论是:

drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.

答案A: 装有雷达的经常超速

3%的车装有雷达, 33%的雷达车被罚超速,=>所有的雷达车爱超速.

而仔细的看题目Clearly 似乎并不是一个结论

而这道题目有一个gap

结论直接将ticket和regularly exceed speed limit联系在一起
需要一个assumption将两个概念联系在一起
所以要选B？？？

唉 还是没想的太清楚，请朋友们帮忙

premise1:所有的车子中3%得车装了radar~~

premise2:在超速被罚款的车子中33%得车子是装了雷达的~~

conclusion:车子装雷达的司机比不装的司机更容易超速

我认为：因为装雷达的车子很少只有3%，而超速的车子里面有33%是装雷达的，如果要想推出conlusion:装雷达的司机更容易超速，那末33%的那些装了雷达的车子（这里别忘了装雷达的车子仅占所有车子的3%，很少很少）必定是重复超速的（即一犯再犯），这时就推出了assumption:超速的司机喜欢一犯再犯

这题好饶人阿~~我也看了好久呢~~

飞天猪piggy

以下是引用DJungle在2006-11-23 12:10:00的发言：

这是一道难题呀，我越想越晕啊，请求援助！！！

MM可以参考一下这个帖子：http://forum.chasedream.com/dispbbs.asp?boardID=24&ID=208559&page=1

其实CXD的书里很多题都很怪的 我做下来有时侯正确率还不到50% 有种想自杀的冲动了。。。

 

cccccc0

雷达那题：如果选A的话，不就是把conclusion又说了一遍了么？所以就不是assumption了，所以就不对了ma~~欢迎讨论~~

cccccc0

以下是引用飞天猪piggy在2006-11-21 23:24:00的发言：

请教大家一道逻辑体(出处是陈向东书p262/40) 找了很多帖子都没找到想要的答案

40.After graduating form high school, people rarely multiply fractions or discuss ancient Rome, but they are confronted daily with decisions relating to home economics. Yet whereas mathematics and history are required courses in the high school curriculum, home economics is only an elective, and few students choose to take it.
Which of the following positions would be best supported by the considerations above?
(A) If mathematics and history were not required courses, few students would choose to take them.
(B) Whereas home economics would be the most useful subject for people facing the decisions they must make in daily life, often mathematics and history can also help them face these decisions.
(C) If it is important to teach high school students subjects that relate to decisions that will confront them in their daily lives, then home economics should be made an important part of the high school curriculum.
(D) Mathematics, history, and other courses that are not directly relevant to a person's daily life should not be a required part of the high school curriculum.
(E) Unless high schools put more emphasis on nonacademic subjects like home economics, people graduating from high school will never feel comfortable about making the decisions that will confront them in their daily lives.

答案选C, 我选了E.

请大家来讨论~

40.After graduating form high school, people rarely multiply fractions or discuss ancient Rome, but they are confronted daily with decisions relating to home economics. Yet whereas mathematics and history are required courses in the high school curriculum, home economics is only an elective, and few students choose to take it.
Which of the following positions would be best supported by the considerations above?
(A) If mathematics and history were not required courses, few students would choose to take them.
(B) Whereas home economics would be the most useful subject for people facing the decisions they must make in daily life, often mathematics and history can also help them face these decisions.
(C) If it is important to teach high school students subjects that relate to decisions that will confront them in their daily lives, then home economics should be made an important part of the high school curriculum.
(D) Mathematics, history, and other courses that are not directly relevant to a person's daily life should not be a required part of the high school curriculum.
(E) Unless high schools put more emphasis on nonacademic subjects like home economics, people graduating from high school will never feel comfortable about making the decisions that will confront them in their daily lives.
这题如果按照lawyer分类的话，应该是must be true题型，即要通过提干推出答案
这题也就是说：平时人们用不到multiply fractions(mathmatics)&discuss ancient rome(history),但在学校里math&history确是必修课；而人们平时会经常用到decisions relating to home ecnomics，但在学校里home ecnomics却只是选修课，而且很少有人选。

做此类型的题目，一定要是能从题干中能推得出的信息
题干推不出A,因为题干中的重点并不是学生选课
题干推不出B,因为题干并没有说math&history也能让我们face these decision
题干推不出D,因为题干并没有说和日常生活没关系的课就可以不要上，题干里只说了两个学科的对比
题干推不出E,因为题干并不能推出学生对make decision有困惑
而C说的是，如果teach student subjects relate to decisions,那么home ecnomics首当其冲。这正是题干里说的，decision是从home ecnomics中学来的

说点题外话，真是觉得laywer分类CR不错~~hehe~~分类得很合理，而且很容易上手，CXD得分类如果不听XDF得课的话，个人认为上手比较的麻烦~~