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(2013·安徽蚌埠第一次质检)Finding information in today's world is easy. The ________ is how you can tell if th...
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(2013·安徽蚌埠第一次质检)Finding information in today's world is easy. The ________ is how you can tell if the information you get is useful or not.
A．knowledge B．ability
C．competition D．challenge
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