中国大学MOOC: If language input doesnt occur until after this time, the individual will never achieve a full(3)___________ of language—especially(4)___________systems.

When people talk about learning a language, they usually expect to learn it 1 with clear 2 success. Actually learning a language is an endless 3 . Any natural human language is a 4 affair with many 5 of regional dialect.

Natural language includes human communication language, spoken language, written language, sign language, flag language, etc., and artificial language is a natural language improved on the basis of natural language. ()

The Yi language branch include the following language except ( ). A: Naxi language B: Dai language C: Hani language D: Lisu language

3 What factors (因素) influence our body language? _______________ influence our body language.

Which of the following is not a distinctive feature of language? A: Language is a system. B: Language is for communication. C: Language is highly motivational. D: Language is human-specific.

Research aims:developing a model for babies in their critical periods of －language acquisition －social, emotional and (3) ______ development

Classroomlanguagecanbealsocalledin-classlanguage,whichisthespeciallyusedlanguagesystembybothteachersandstudentsinclassroomteaching.Whichofthefollowingisnotconsistedinit? A: Spoken language B: Body language C: Spelling language D: Written language

______ suggests to learn a foreign language directly as we learn native language A: Second language acquisition B: Foreign language acquisition C: First language acquisition D: Third language acquisition

Which language is actually executed by the central processing unit of a computer? A: high-level language B: assembly language C: machine language D: virtual language