Your ability to argue is of no（ ）if you get your facts wrong.

Your ability to argue is of no（ ）if you get your facts wrong.
A、ground
B、avail
C、practice
D、consequence
【正确答案】：B
【题目解析】：of no/little avail：毫无用处，ground：根据，选B。句意：要是论据错误，你辩论的本领再高也没有用。