Question

(2013·安徽蚌埠一次质检)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

Answer 1

D

D　句意：当今世界找信息很容易。但挑战是你如何辨别你所获得的信息是否有用。knowledge知识；ability能力；competition竞赛。challenge挑战，艰巨任务。又如：She likes her job to be a challenge.她喜欢艰巨的工作。