feifei-104

The reasoning of the passage:

nuclear armaments in existence has kept major powers from using nuclear weapons--a third world war between superpowers has not happened--> the policy of nuclear deterrence has worked thus far is unquestionable.

Pay attention to the above reasoning, especially the conclusion that the policy of nuclear deterrence has worked, in fact, that's not sure. It's possible that other reasons cause the world war not happen. I think it looks like a assumption question, to be more reasonble, the argument should be provided evidence to rule out other reasons which can cause the world war not happen.

Thus, E is the best answer.

The reasoning is

a third world war between superpowers has not happened-->the policy of nuclear deterrence has worked .

the conclusion is that the policy of nuclear deterrence has worked, not a third world war will not happen . B does not concerned on the reasoning of the passage. May be we can name it out of the reasoning.

我总觉得reasoning line:

the policy of nuclear deterrence has worked ---->a third world war between superpowers has not happened

然后E 选项找他因，这样想正确吗