Finding information in todays world is easy.The()is how you can tell if the information you get is useful or not.

科目名称：理工英语3

试卷号：11377

题型：词汇与结构(单选题)

题目：Finding information in todays world is easy.The()is how you can tell if the information you get is useful or not.

选项：A.ability B.challenge C.competition

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答案：B.challenge