20. When people predict that certain result will not take place unless a certain action is taken, they believe that they have learned that the prediction is correct when the action is taken and the result occurs. On reflection, however, it often becomes clear that the result admits of more than one interpretation.
Which of the following, if true, best supports the claims above?
(A) Judging the success of an action requires specifying the goal of the action.
(B) Judging which action to take after a prediction is made requires knowing about other actions that have been successful in similar past situations.
(C) Learning whether a certain predictive strategy is good requires knowing the result using that strategy through several trials.
(D) Distinguishing a correct prediction and effective action from an incorrect prediction and ineffective action is often impossible
(E) Making a successful prediction requires knowing the facts about the context of that prediction.
答案是D没问题. 可是偶是排除法作的. 觉得B选项很干扰
原文的推理没有看懂
划线部分应该是结论吧?
请求指教
谢谢先
五一节乱七八糟的事忙死了,PumpkinMM,我来试试。
A: Action R:Result  rediction
最后一句是结论。
原文逻辑:应当:R-->A;P正确:A-->R; 然而仔细考率发现通常A-->R是不对的。
说俗了就是:原命题对,逆命题不一定对,但是通常还以为逆命题也对。
D就是这个意思:前一半是逆命题,后一半是逆否命题(原命题);而且分不开;
B是说A通常来自于以前成功的A;和A--R模式没关系
说句老实话,作了两遍都没搞懂,只是感觉。刚刚才仔细分析了一下
胡说一通,也不知清楚不
请Pumpkin MM指教
更迷惑了......
想想想想
想想ing
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