问题
选择题
These new ideas which need ________ sound fine.
A.trying on
B.trying out
C.to try on
D.to try out
答案
B
题目分析:句意:这些需要试验的想法听起来很好。首先区分词组:try on“试穿”,try out“尝试,试验”,所以排除AC,另外表示“需要被...”,用need doing或need to be done,所以选B。