【正确答案】The social constructivist theory deals with the major investigations of language learning and acquisition, and language output. The conception of language output as a way to promote language acquisition is to some extent in line with the so called CONSTRUCTIVISM. A constructivist view of language argues that language (or any knowledge) is socially constructed. Learners learn language by cooperating, negotiating and performing all kinds of tasks. In other words, they construct language in certain social and cultural contexts.
The type of language constructed by second or foreign language learners who are still in the process of learning a language is often referred to as Interlanguage, i.e.the language system between the target language and the learner's native language. It's imperfect compared with the tarter language, but it is not mere translation from the learner's native language either. It is a dynamic language system, which is constantly moving from the departure level to the native-like level. Therefore, "inter" actually means between the beginning stage and the final stage.
Studies on interlanguage can be done in two ways: (1)investigating the psychological, biological or neurological mechanisms involved in the production of interlanguage; (2)investigating the linguistic features of interlanguage.
The Interlanguage will certainly benefit language learning and language acquisition.

【答案解析】[解析] 本题考查构建主义的相关知识。作为一种促进语言学习的方法，语言输出的概念在某种程度上和所谓的构建主义是相吻合的。构建主义语言观点认为，学习者在特定的社会和文化环境中构建语言。