7,________is a linguistic situation in which two standard languages are used by anindividual or by a group of speakers, such as the inhabitants of a particular regionor a nation
A、Creole
B、Vernacular
C、Bilingualism
D、Diglossia
【正确答案】：C
【题目解析】：双语是指一个人或一组说话者（如某一地区或某一国家的居民）使用两种标准语言的一种语言状况。（课本179页提到Bilingualism）
