问题补充：
Why not your new ideas? Otherwise you will never know whether they are possible or not.
A. put out
B. wear out
C. try out
D. find out
答案：
A. put out
B. wear out
(答案→)C. try out
D. find out
解析：考查短语辨析，put out 扑灭，wear out 穿旧，try out 尝试，find out 查明真相，句意：为什么不尝试你的新观点呢？否则的话你将永远不会知道他们是不是可能的。所以选C。
