题目内容：
From this passage, we can infer that__________.
A．in order to perform tasks successfully, individuals need know more than their professional knowledge B．in order to perform tasks successfully, skills that the individual should have are built only by repeated training
C．in order to perform tasks successfully, the disposition to behave or to perform in a way needn't be in accordance with the requirements of the work
D．in order to perform tasks successfully, performance standards should be based on what the average individual has to be able to achieve
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