The dictionary where the headword or entries are defined and ill

The dictionary where the headword or entries are defined and illustrated in the same language is（ ）.
A、monolingual dictionaries
B、bilingual dictionaries
C、linguistic dictionaries
D、encyclopedic dictionaries
【正确答案】：A
【题目解析】：本题考查单语词典。Monolingual dictionaries are written in one language. That is the headword or entries are defined and illustrated in the same language. 单语词典是以一种语言编写的词典，也就是用相同的语言对其核心词或词条进行定义和示例。所以选A。