LSAT 第一部分的一道题，各位逻辑高手各显身手

qqgf

The dean of computing must be respected by the academic staff and be competent to oversee the use of computers on campus. The only deans whom academics respect are those who hold doctoral degrees, and only someone who really knows about computers can competently oversee the use of computers on campus.
Furthermore, the board of trustees has decided that the dean of computing must be selected from among this university’s staff. Therefore, the dean of computing must be a professor from this university’s computer science department
14. Which one of the following statements, if true, would weaken the argument?
(A) There are members of this university’s staff who hold doctoral degrees and who are not professors but who really know about computers.
(B) There are members of this university’s philosophy department who do not hold doctoral degrees but who really know about computers.
(C) Computer science professors who hold doctoral degrees but who are not members of this university’s staff have applied for the position of dean of computing.
(D) Several members of the board of trustees of this university do not hold doctoral degrees.
(E) Some members of the computer science department at this university are not respected by academics in other departments

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spacezlly

不好意思,笔误.
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greenapple

我的推理有点不同，写出来大家批评吧：
  结论dean of computing----->必要条件 1:respected by the academic staff-
---->hold doctor degree
                        ----->必要条件2:be competent to oversee.-->know computer
                       ------->必要条件3staff of the university)


    以上3个条件必要非充分,而Therefore, the dean of computing must be a professor from this university’s computer science department中的professor和computer science department的约束力都强于前面的3个必要条件,所以,找weaken 就是要找不满足professor或computer science department,但满足3个必要条件的.从而,A对.

StephanieYun

agree

spacezlly

推理如下：
(dean of computing)-->
      充分条件A1respected by the academic staff)-->条件A2hold doctor degree)
      充分条件B1be competent to oversee.)-->条件B2know computer)
      充分条件c: (staff of the university)

而结论是：(dean & computing)--> 条件a：professor
                                条件b：staff of the university
                                条件c：from computer science department

选项A: 虽不满足结论，却条件A,B,C,所以结论被削弱。

回家过年

远听高论

回家过年

远听高论

qqgf

答案是A啊，我当初选的是E，为什么是A呢？

StephanieYun

我想会是A吧 ，愚见。 答案是什么呢？

回家过年

我选C:如果不是,这题就够推理,我想GMAT不会考到.