具有制酸止痛功效的是
A. 龙骨
B. 磁石
C. 煅牡蛎
D. 琥珀
E. 羚羊角
Linguistics is generally defined as the scientific study of language.
A. T
B. F
Linguistics studies particular language, not languages in general.
A. T
B. F
A scientific study of language is based on what the linguist thinks.
A. T
B. F