题目内容：

24.Let’s learn to use the problem we are facing _________ a stepping-stone to further success.
A.to B.for C.as D.by

优质解答

C首先这里有一个定语 we are facing 其实这个句子可以简略成这样 Let’s learn to use the problem as a stepping-stone to further success.use ...as.把什么当做...用整个句子翻译为 让我们学会把这个问题当做是...