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1)

I would say that both vocabulary and pronuncation is importaint, but i think that vocabulary is rather more to communicate with non-norwegians.  If you do not have a good vocabulary people most likely can not understand everything you say, if you can not remember one word and you do not have the vocabulary to find another, it is going to be hard to communicate. However if you can not pronounce the words, people could probably not understand as well.

2)

Vocabulary
 The parapraph is about the "inner" and "outer" circle, that tells us about native and second-language speakers.

Standards
The second paragraph tells us that non-native speakers are not that concerned about grammar, and therefore thinks that sentences that are written wrong (grammatical) seems right. (something a native speaker would notice right away)

Other Englishes
This paragraph is about different varities of English, for instance spanglish, that is a mix between Spanish and English.

The future of English
The last paragraph is about how the use of  English will develope into three forms in the future; one they speak locally as their dialect, a national variety for ecucation and buisness, and one form to communicate with foreigners.