请教一个归纳题

heritta

A violin constructed to have improved sound would sound different from the best-sounding existing violins. To professional violinists, a violin that sounds different from the best-sounding existing violins sounds less like a violin and therefore worse than the best-sounding existing violins. Professional violinists are the only accepted judges of the sound quality of violins.

Would be best supported by those statements?

(A)  Only amateur violinists should be asked to judge the sound quality of newly constructed violins.

(B)   Professional violinists supervise the construction of violins.

(C)   The best-sounding existing violins have been in existence for several centuries.

(D)  It is currently impossible to construct a violin that the only accepted judges will evaluate as having improved sound

(E)   It is possible to construct a violin that sounds better that the best-sounding existing violins to everyone but professions violinists.

答案：D

思路：D项说不可能造出一种小提琴，这种小提琴是只被唯一可接受的判定者（专家）评价能够有改进的声音。题干说有可改进声音的小提琴和最好声音的小提琴在判定者看来，有可改进声音的小提琴less like a 小提琴，不太像个小提琴了，so判定者认为它没有改进的声音，因此有改进声音的小提琴（被专家认为）没有改进的声音。矛盾，因此不可能建造的出。

网络课堂里面是这样推理的,我的逻辑思维不大好,怎么想也想不明白划横线的地方怎么推出来的？ 题干说不同于best-sounding的小提琴都可被改进，不同于best-sounding的小提琴都less like a 小提琴，这里怎么讲改进和less like a 小提琴联系起来的呢？

迷糊了，请大大们指教！

florence1108

我的想法是 首先用B替代the best-sounding existing violins

那么，

由A violin constructed to have improved -->非B
to professional : 非B--->less like a violin and worse than the best-sounding existing violins
 

那么可以推出结论  A violin constructed to have improved -->less like a violin and worse than the best-sounding existing violins

然而， improved 和 worse 是矛盾的 所以结论不成立， B the best-sounding existing violins 是不存在的

heritta

谢谢.可是还是有点不明白improved和worse之间为什么矛盾？

题目说，不是最好声音的小提琴都是需要改进的小提琴，是不是最好的声音只能由专业的提琴手来判定。做题时想不出这个里面的不妥。有什么诀窍吗？