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Finding information in today's world is easy.The ________ is how you can tell if the information you get is useful or not.
A.knowledgeB.ability
C.competitionD.challenge
D
D 句意:當今世界找信息很容易。但挑戰(zhàn)是你如何辨別你所獲得的信息是否有用。knowledge知識;ability能力;competition競賽。challenge挑戰(zhàn),艱巨任務。又如:She likes her job to be a challenge.她喜歡艱巨的工作。
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