【求助】哪位可以用lawyer的逻辑方法帮我分析一下OG12的93题呢？

腹黑男

题目如下：
93. Commentator: The theory of trade retaliation states that countries closed out of any of another country’s
markets should close some of their own markets to the other country in order to pressure the other country to
reopen its markets. If every country acted according to this theory, no country would trade with any other.

The commentator’s argument relies on which of the following assumptions?

(A) No country actually acts according to the theory of trade retaliation.
(B) No country should block any of its markets to foreign trade.
(C) Trade disputes should be settled by international tribunal.
(D) For any two countries, at least one has some market closed to the other.
(E) Countries close their markets to foreigners to protect domestic producers.



能不能将你们的分析思路写出来给我看下呢？我在看CR，用的是Lawyer的方法，但是对assumption一类的题目老是套不上，麻烦大家告诉我下思路吧

sanlingjie

哈哈，lawyer师父肯定可以~~~~~

腹黑男

关键是lawyer师傅不在呀

sanlingjie

哈哈，我知道选D，但是不晓得怎么跟你解释。

腹黑男

楼上的朋友是自己得出的答案还是用lawyer的方法套的呢？

sanlingjie

结论是If every country acted according to this theory, no country would trade with any other.
你想想，这个结论在什么情况下不成立？根据premise，必须存在关闭市场的情况，才可能导致这个结果吧。如果没有关闭市场的情况，那么这个结论就不成立了。所以答案是D。对于任意两个国家，至少有一个国家关闭自己对另一个国家的一些市场。对D取非的话，只要有两个国家，它们彼此间都不对对方关闭市场，那么它们之间的trade就可以继续进行，对吧？所以答案选D。

sanlingjie

也算是lawyer师父的方法吧，这是assumption的题，就对选项取非好了，哪个选项取非之后能够使结论不成立，那个选项就是正确答案了。

sanlingjie

不过lawyer师父的方法我还没有学精。。。。。所以不敢乱说~~~哈哈

腹黑男

好的，谢谢你啦

sanlingjie

你的名字还真是奇怪，你能告诉我你的名字什么意思么？挺可怕的一个名字。。。估计很多人看到你那可怕的名字就不太想回答你的问题了。。。。额。。。。。。。。。