1. 选用方框内合适的单词并用其正确形式填空（每个单词限用一次）。

variety, vocabulary, reference, appreciate, character, specific, struggle

1. （1） She used her work experience as a frame of for her teaching.
3. （2） Lecture language is a language lying between written language and oral language.
5. （3） She revealed her true when anyone disagreed with her.
7. （4） I think the best way to enlarge your is by reading English novels.
9. （5） The money is to be used for one purpose: the building of the new theatre.
11. （6） You can't fully foreign literature in translation.
13. （7） I've been to understand this article written in French all afternoon.