[求助]

不好意思，lawyer, 藕又来了求教了。。。consideration 和anti-consideration在逻辑题里的区别是什么？

从字面意思理解，一个是原因，一个反原因，但具体到逻辑题中，藕就不知道如何判定了。下面一个BF题，正确答案B就出现anti-consideration. 还有一点疑问，一道逻辑题可以没有结论吗？看B的说法，整个argument就包括一个principle 和 anit-consideration. 没有conclusion..

2. A double-blind study, in which neither the patient nor the primary researcher knows whether the patient is being given the drug being tested or a placebo, is the most effective procedure for testing the efficacy of a drug. But we will not be able to perform such a study on this new drug, since the drug will have various effects on the patients’ bodies, which will make us aware of whether the patients are getting the drug or a placebo.

The two portions in boldface play which of the following roles?

(A) The first is a general consideration that introduces the argument; the second is a special situation that weighs against the first.
(B) The first is a general principle that is necessary for this argument; the second is an anti-consideration that the argument includes.
(C) The first is a premise that this argument includes; the second is a main idea that can be drawn from this argument.
(D) The first is an evidence that this argument includes; the second is a conclusion that can not be drawn from this argument.
(E) The first is a general situation that supports this argument; the second is a conclusion that can be drawn from a special fact.

1。对一个段落，有很多种说法的，不是没说就不存在。否则不就是掩耳盗铃了吗。

3。consideration是考虑，说法的意思。anti-就是相反，不同的意思。第一句是个一般规律。第二句是个不同例子，不同于规律的说法。