题目内容
【题目】Finding in-formation in today's world is easy. The _____ is how you can tell if the in-formation you get is useful or not.
A. ability
B. competition
C. challenge
D. knowledge
【答案】C
【解析】ability能力,才干;com-petition 竞争,竞赛;challenge挑战; knowledge知识,学问。
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