Определи жанр оперы даргомыжского "русалка"

в итальянском концерте баха стабилизируется схема трехчастной циклической композиции.

mark and he are thirteen years old.and they are very sportly. they often go to the gym - at least three times a week. mark does exercises to make his arms strong. he can't walk because of a car accident, so he goes everywhere in wheelchair. but it doesn't stop him doing the things that boys his age want to do.