(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. petition
D. challenge
网友回答
A. knowledge
B. ability
C. petition
(答案→)D. challenge
解析：选D 考查名词辨析。句意：当今世界找寻信息很容易，但困难的事是你如何辨别你所获得的信息是否有用。knowledge“知识”；ability“能力”；petition “竞赛”；challenge: a new or difficult task“挑战；艰巨任务”。