大坝施工单位必须按照施工承包合同规定的（）进行施工。

A.设计文件

B.图纸要求

C.有关技术标准

D.结算方式

1) ______ linguistic competence and linguistic performance
2) ______ assimilation and accommodation
3) ______ the language acquisition device (LAD)
4) ______ communicative competence
5) ______ the input hypothesis
a) The former is the process by which incoming information is changed or modified in our minds so that we can fit it in with what we already know; while the latter is the process by which we modify what we already know to take into account new information.
b) The former refers to knowledge of grammatical rules of language; whale the latter refers to application of language.
c) The ability not only to apply the grammatical rules of a language in order to form grammatically correct sentences but also to know when and where to use these sentences and to whom.
d) A sort of mechanism or device which contains the capacity to acquire one’s first language.
e) It assumes that humans acquire language in only one way--by understanding messages, or by receiving "comprehensible input".