The phenomenon that one can speak both English and Chinese is called diglossia.

Diglossia is a sociolinguistic situation where two varieties of a language exist side by side throughout the community, with each having a definite role to play. （ ）

() is a situation where two varieties of a language exist side by side throughout the community, with each having a definite role to play. A: Bilingualism B: Diglossia C: Bilaterality D: Diglot

______ refers to a sociolinguistic situation: two varieties of a language exist side by side throughout the community, with each having a definite role to play. A: Dialect B: Diglossia C: Pidgin D: Creole