A．selectionsB．collectionsC．sourcesD．origins

【C3】A．meansB．waysC．sourcesD．resource

A．volumesB．collectionsC．sectionsD．chapters

【C3】A．generationsB．descentsC．causesD．origins

Which of the following theories is NOT about the origin of language？A．Divine-origin theory

【C2】A．originsB．originalsC．sourcesD．resources

【C4】A．overallB．outermostC．outwardD．original