判断题Words like dragon, phoenix, unicorn, and mermaid, are meaningful but they identify no entities in the real world.()
判断题Sounds which are produced with both the upper lip and the lower lip are called bilabials.()
判断题Tenor depends on the relations between the participants.()
判断题The syllabus and the textbooks are prepared according to the social aim for teaching a language.()
判断题Register is a term widely used in sociolinguistics to refer to varieties according to use.()