10. The initial vowel in economics can be either [i:] or [e]. The two vowels are in free variation. A. 错误 B. 正确 ...

5. A green bottle is a bottle whose color is green. A. 错误 B. 正确 ...

8. My father has passed away is ________ in formality. A. frozen B. formal C. consultative D. casual ...

17. Interlanguage is the approximate language system that the learner constructs for use in communication through the target language. A. 错误 B. 正确 ...

12. The initial vowel in economics can be either of the two vowels [i:] and [e], which are in free variation. A. 错误 B. 正确 ...

7. Productivity is one of the features of language. A. 错误 B. 正确 ...

2. According to referential content, deixis can be put into person deixis, place deixis, time deixis and discourse deixis. A. 错误 B. 正确 ...

15. A(n)________ is the minimal or the smallest distinctive linguistic unit in a language. A. phonetic symbol B. alphabet C. phoneme D. allophone ...

18. Referential theory holds that a linguistic sign derives its meaning from that which refers to something in the reality. A. 错误 B. 正确 ...

10. The language used to talk about language is called artificial language. A. 错误 B. 正确 ...