求教一道逻辑难题

keledong · 发表于 2003-12-11 12:40:00

It has always been difficult to understand the basis of politics in the People’s Republic of China. Because the system is effectively closed, it is impossible to know with any degree of confidence who is allied with whom and for what reasons. Yet Chinese politics does exhibit many of the external characteristics of factional political systems, as found in more open societies. It is legitimate to conclude, therefore, that China has a factional political system.
Which one of the following, if true, would confirm the author’s conclusion that China has a factional political system?
(A) All open political systems are factional political systems.
(B) All factional political systems are closed political systems.
(C) All closed political systems are factional political systems.
(D) China’s political system is more open than many existing factional political systems.
(E) China’s political system is more closed than all existing factional political systems.

答案是C,可我觉得E更符合原文的精神

susan7375 · 发表于 2003-12-12 14:36:00

E 出现了原文中没有的比较all existing factional political systems－－－China，错！
此题是confirm
实际上根据原文并不能推导出这个conclusion。
只有C成立时，该结论才能正确。

mariezhu · 发表于 2003-12-14 12:00:00

题目中说到china's political system特点：effectilvely closed，同时exhibits some exernal characteristics of factionnal political systems，结论是It is legitimate to conclude, therefore, that China has a factional political system。
那么要使结论成立，只能认为(C) All closed political systems are factional political systems是正确的才可以。
而(E)只是说 China’s political system is more closed than all existing factional political systems.并没能在结论和前提间建立联系。因为题目中并没有说if a country's political system is more closed than all existing factional systems, then the country has a factional political system.

求教一道逻辑难题

求教一道逻辑难题

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