呵呵。。。你这2句话本身就是2个难点。。。
有没有例题啊,贴一个上来才好分析呀。。。现在这里把方法说得再多,也只是纸上谈兵。
举个例子,费费135中的104题,为何选E,如何确定是他因而不是无关项?多谢!
104. That the policy of nuclear
deterrence has worked thus far is unquestionable. Since the end of the Second
World War, the very fact that there were nuclear armaments in existence has
kept major powers from using nuclear weapons, for fear of starting a worldwide
nuclear exchange that would make the land of the power initiating it
uninhabitable. The proof is that a third world war between superpowers has not
happened.
Which one of the following, if
true, indicates a flaw in the argument?
(A) Maintaining a high level of
nuclear armaments represents a significant drain on a country’s economy.
(B) From what has happened in the
past, it is impossible to infer with certainty what will happen in the future,
so an accident could still trigger a third world war between superpowers.
(C) Continuing to produce nuclear
weapons beyond the minimum needed for deterrence increase the likelihood of a
nuclear accident.
(D) The major powers have engaged
in many smaller-scale military operations since the end of the Second World
War, while refraining from a nuclear confrontation.
(E) It cannot be known whether it
was nuclear deterrence that worked, or some other factor, such as a recognition
of the economic value of remaining at peace.
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