Finding information in today’s world is easy.The_______is how you can tell if the information you get is useful or not。
#7325
A
ability
B
eompetition
C
challenge
D
knowledge
推荐题目
 You can't see the___________ now for they are having a meeting at the moment.
#7113
A
editors-in-chief
B
editor-in-chiefs
C
editors-in-chiefs
D
editor-in-chief
—What do you think the ___________should do first?—They should learn to take ___________as well as share rights in life. 
#6822
A
grown-up;responsibility
B
growns-up;responsibility
C
grown-ups;responsibilities
D
growns-ups;responsibilities