In traffic lights, red can only mean stop. But in human languages, limited phonemes can form. numerous words which can form. unlimited sentences. This is a good illustration of the______feature of language.
A. duality
B. displacement
C. arbitrariness
D. productivity
查看答案
Which of the following isnt a major branch of linguistics?
A. Phonetics
B. Pragmatics
C. Speech
D. Sociolinguistics
______is the knowledge of the rules of an ideal speakers language.
A. Performance
B. Capacity
C. Ability
D. Competence
下列防腐剂中对霉菌的抑菌能力较好的是()
A. 尼泊金类
B. 乙醇
C. 山梨酸
D. 苯甲酸
E. 甘油
纳米乳粒径范围为()
A. <1nm
B. 10~100nm
C. 100~500nm
D. 500~1000μm
E. 1~100μm