题目：15． From the passage，we can learn _________ ．
A． one shouldn’t criticize others very often
B． one should often make his windows clean
C． one must judge himself before he judges others
D． one must look at others through his dirty window
喵查答案：C
15．C【解析】最后一段点出文章的主旨，我们在评价别人之前应先看看自己做得如何．
