请教LSAT-5-2-4,LSAT-5-2-7

joywzy

以下是引用cranberry在2003-5-22 0:02:00的发言：

  d不用想反例，题目要求一定要正确，D是可能正确

是啊,D是可以是正确的,也可以是错误的,那么,题目问的是一定正确的,那么D错.我明白了.

那么第四题呢?谢谢

joywzy

以下是引用joywzy在2003-5-22 9:00:00的发言：

是啊,D是可以是正确的,也可以是错误的,那么,题目问的是一定正确的,那么D错.我明白了.

那么第四题呢?谢谢

能否帮助看看第四题?谢谢.

rongchao

不好意思,昨天看乒乓球比赛了,没有及时回答
我的思路如下,请大家指点:
  S和SE包含在L中,而L中的每个人对CV有影响,因此集合L中可能还有其他类型的人存在.
  A.集合L对CV有影响,那么其中的人肯定对CV有影响
  B.和最后一句矛盾
  C.只讲到参与了L的人对CV有影响,并没有提到其他论述支持他的反面:所有对CV影响的人都在L中
  D.只讲到L中包含PS和SE,那么在L中还存在其他类型的人,不一定是PS或SE
  E.D错了E肯定也错
如果文章提到参加L的人不是PS就是SE,那么D\E就对了

renprince

以下是引用joywzy在2003-5-20 19:33:00的发言：
4. A work of architecture, if it is to be both inviting and functional for public use, must be unobtrusive, taking second place to the total environment. Modern architects, plagued by egoism, have violated this precept. They have let their strong personalities take over their work, producing buildings that are not functional for public use.

Which one of the statements below follows logically from the statements in the passage?

(A) Unobtrusive architecture is both inviting and functional.

(B) Modern architects who let their strong personalities take over their work produce buildings that are not unobtrusive.

(C) An architect with a strong personality cannot produce buildings that functional well for the public.

(D) A work of architecture that takes second place to the environment functions well for public use.

(E) A work of architecture cannot simultaneously express its architect’s personality and be functional for public use.

答案：B

这是怎么来的呢？

对于b仍然有疑问啊！
a->b
a非－>b非应当是不成立的啊，不过是　support了原文

renprince

强烈要求高人指点拉，着是我的要害！

joywzy

B.不知怎么来的

1)to be both inviting and functional for public use==> must be unobtrusive, taking second place to the total environment

不能得出:
not to be both inviting and functional for public use==> must be not unobtrusive, taking second place to the total environment

否命题不一定对,如果能对的话,是可以推出B的.

这是与renprince相同的问题.请求讲解.谢谢.

joywzy

以下是引用rongchao在2003-5-23 13:02:00的发言：
不好意思,昨天看乒乓球比赛了,没有及时回答
我的思路如下,请大家指点:
   S和SE包含在L中,而L中的每个人对CV有影响,因此集合L中可能还有其他类型的人存在.
   A.集合L对CV有影响,那么其中的人肯定对CV有影响
   B.和最后一句矛盾
   C.只讲到参与了L的人对CV有影响,并没有提到其他论述支持他的反面:所有对CV影响的人都在L中
   D.只讲到L中包含PS和SE,那么在L中还存在其他类型的人,不一定是PS或SE
   E.D错了E肯定也错
如果文章提到参加L的人不是PS就是SE,那么D\E就对了

谢谢rongchao!!这个方法对于A,解题快.

这个集合的方法有些部分与充分必要性相关.其实充分必要性的思路我写起来慢,但是真要掌握好了,也非常快能理清思路,做好题.

leeon

Ask again the question 4:

4. A work of architecture, if it is to be both inviting and functional for public use, must be unobtrusive, taking second place to the total environment. Modern architects, plagued by egoism, have violated this precept. They have let their strong personalities take over their work, producing buildings that are not functional for public use.

Which one of the statements below follows logically from the statements in the passage?

(A) Unobtrusive architecture is both inviting and functional.

(B) Modern architects who let their strong personalities take over their work produce buildings that are not unobtrusive.
(C) An architect with a strong personality cannot produce buildings that functional well for the public.

(D) A work of architecture that takes second place to the environment functions well for public use.

(E) A work of architecture cannot simultaneously express its architect’s personality and be functional for public use.

How to get the answer B?

lawyer_1

对于4题，关键是理解 Modern architects, plagued by egoism, have violated this precept这句话的含义。它要表达的意思为现代建筑师没有遵循该原则，没有做到设计的建筑 unobtrusive（当一个原则为条件句时，违反该原则就是违反该必要条件）。在结合原文最后一句话就是B的内容

leeon

当一个原则为条件句时，违反该原则就是违反该必要条件

I see, could u provide any other example in accordance with this principle?