If one wants to find out the minute difference between shades of

If one wants to find out the minute difference between shades of meaning, the best source is（ ）.
A、a thesaurus
B、a synonym finder
C、an encyclopedia
D、an encyclopedic dictionary
【正确答案】：B
【题目解析】：本题考查同义词词典的作用。相对同义词是在外延上相近或几乎相同但意义有细微区别或有程度上区别的词。如果想查到一些词汇很细微的区别，那就要使用同义词词典（The Synonym Finder是一本同义词词典的名称）。所以本题选B。