In the study of linguistics, hypotheses formed should be based on language facts and checked against the observed facts.

判断题A scientific study of language is based on what the linguist thinks.

判断题Linguistics studies particular language, not languages in general.

判断题Linguistics is generally defined as the scientific study of language.

单项选择题The details of any language system is passed on from one generation to the next through （）, rather than by instinct.

A.learning
B.teaching
C.books
D.both A and B

单项选择题Language can be used to refer to contexts removed from the immediate situations of the speaker. This feature is called （）

A.displacement
B.duality
C.flexibility
D.cultural transmission