河南成教 / 英语语言学
正确率：100%
4[单选题]
A ____ is a variety of language that serves as a medium of communication among groups of people for diverse linguistic backgrounds.
A.lingua francaa
B.register
C.Creolee
D.national language
A ____ is a variety of language that serves as a medium of communication among groups of people for diverse linguistic backgrounds.
参考答案：