1、单选题：
If a linguistic study describes and analyzes the language people actually use, it is said to be（ ）.
选项：
A:descriptive
B:analytic
C:linguistic
D:prescriptive
答案: 【descriptive】

2、单选题：
A historical study of language is a（ ）study of language.
选项：
A:diachronic
B:comparative
C:prescriptive
D:synchronic
答案: 【diachronic】

3、单选题：
Which of the following is not a design feature of human language? （ ）
选项：
A:Displacement
B:Arbitrariness
C:Duality
D:Meaningfulness
答案: 【Meaningfulness】

4、单选题：
According to F. de Saussure, （ ）refers to the abstract linguistic system shared by all the members of a speech community.
选项：
A:parole
B:Language
C:langue
D:performance
答案: 【langue】

5、单选题：
Language can be used to refer to contexts removed from the immediate situations of the speaker. This feature is called（ ）.
选项：
A:displacement
B:cultural transmission
C:flexibility
D:duality
答案: 【displacement】