急，英语专升本语言学练习，高手帮忙做一下，谢谢！

急，英语专升本语言学练习，高手帮忙做一下，谢谢！
一、单选题
1. Krashen’s Monitor Theory belongs to ______.
A. teaching theories
B. environmentalist theories
C. functionalist theories
D. nativist theories
2. In _____ stage, children use single words to represent various meanings.
A. telegraphic
B. two-word
C. holophrastic
D. babbling
3. ______ is used between very family members and close friends.
A. The consultative style
B. The casual style
C. The intimate style
D. The formal style
4. _____ refers to the fact that a speaker changes from one language to the other in different situations or when talking about different topics.
A. Bilingualism
B. Code-mixing
C. Code-switching
D. Pidgin
5. British English and American English are ______ varieties of the English language.
A. functional
B. social
C. regional
D. standard
6. The ____________ function (sometimes also referred to as experiential function) is realized by the transitivity system of language.
A. ideational
B. interpersonal
C. textual
D. logical
7. Beauty and siren both refer to a good-looking woman, differing in __________.
A. affective meaning
B. style
C. collocation
D. register
8. _________ theories are those that attempt to explain acquisition on the basis of assuming an innate biological endowment that makes learning possible.
A. Environmentalist
B. functionalist
C. nativist
D. both a and b
满分：2.5 分
9. ______ is a term widely used to refer to varieties according to use in sociolinguistics.
A. Register
B. Dialect
C. Tenor
D. Variety
10. _____ is an expression which substitutes one which may be seen as offensive or disturbing to the addressee.
A. Taboo
B. Euphemism
C. Implicature
D. An indirect illocution