Вопрос по химии:

Решите, пожалуйста, задачу по химии.Определите состав (в процентах по массе) продуктов сгорания попутного газа.

Вопрос по истории:

Какие подвиги сделали Юрий Долгорукий,Андрей Боголюбский,Всеволод большое гнездо

Вопрос по алгебре:

Вопрос по английскому языку:

1. My elder brother is fond … fantasy and adventure stories. a) on                       b) of                     c) about
2. He is so keen … literature, he can read … hours. a) on, for               b) of, for              c) on, in
3. He possesses a talent … writing short stories. a) of                      b) with                 c) for
4. He often learns poems … heart. a) in                     b) by                      c) with
5. Peter has a keen sense … humour. a) for                  b) of                         c) with
6. He is curious … everything. a) without         b) with                     c) about
7. My brother likes to find … something interesting about the authors of the books he is reading. a) up                 b) out                        c) in
8. My little sister Helen is fond … reading. a) off                      b) on                     c) of
9. She always reads … pleasure.
10. a) without             b) by                     c) for

   10. When she looks … funny books, I see a happy expression … her face.

     a) through, on       b) at, in              c) through, at

    11. When she comes across something unusual she never holds … her emotions.

      a) back                    b) by                    c) off

   12. She always gives way … joy and excitement.

      a) for                       b) into              c) to

   13. Sad stories arouse … sympathy in Helen.

      a) from                    b) to                   c) –

    14. I’m often amused … her questions.

      а) without               b) about            c) by

    15. Olga is is your mother's mother. Olga is your...

      a) mother  b) aunt      c) granny           d) sister

   16. Max is your uncle's son. He is your...

      a) nephew   b) cousin           c) twin     d) grandson

   17. Sarah is your grandma's only daughter. Sarah is your...

     a) mother  b) aunt      c) granny           d) sister

   18. Nikita is your mother's son. He is your...

      a) nephew  b) dad         c) brother    d) grandson

   19. Mary is your uncle's wife. She is your...

     a) mother    b) aunt      c) granny           d) sister

Вопрос по алгебре: