Here is your home task:
1) get prepared for the dictation
2) U.3: read, do the ex-s
3) be ready with virus classifications
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Reverting to the question of pronouncing "beta", there are some interesting links:
(Br. dictionaries present the variant of pronunciation through [i:])
(two variants are presented: [i:] as Br.E. and [ei] as Am.E.)
(a curious resource providing samples of words pronounced by people from all the countries)
(forum discussion of "beta" pronunciation)
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