问题
选择题
Let's learn to use the problem we are facing ______ a stepping-stone to future success.
A.to
B.for
C.as
D. by
答案
答案:C
题目分析:考查介词:A. to 给,B. for为了,C. as 做为, D. by通过,句意是说,我们要学着把我们面对的问题作为通向未来成功的垫脚石来用。选C。