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
It was ______that all of us were tired out when we arrived.
#5720
A
so long a way
B
such long a way
C
so long way
D
such long way
Children need to feel ______ in order to do well at school.
#6260
A
secure
B
fun
C
popular
D
threatened
. New mineral resources may be discovered during the forthcoming Antarctic _____.
#6741
A
excursion
B
execution
C
extraction
D
expedition
We all agree that the products of this factory are of better ________.
#6292
A
quality
B
quantity
C
principal
D
identity