А вот Na2SO3 из него мне надо получить NaHSO3 только я понятии не имею как помогите((( - №3974291

А вот Na2SO3 из него мне надо получить NaHSO3 только я понятии не имею как помогите(((
- Предмет:
  Химия
- Автор:
  marcospowers
- 6 лет назад

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Была бы благодарна за помощь.
Прочитайте
текст. Выберите один из предложенных вариантов ответа.

By the age of 23 Beatrice
(A10) ... a number of jobs, which she (All) ... when she got tired of them.

One day she saw an
advertisement for a job as a canal warden. She applied for the job, just
because it sounded interesting, but she had no idea what a canal warden did.
Surprisingly, she (A12) ... the job and started work a few days later. Now she
(A13) ... an official cap and coat and walked along the banks of the canal,
enjoying the fresh air. It seemed to be the best job she (A14) ....

It was too good to last long.
One day as she (A15) ... along the bank, she (A16) ... into the canal. Hardly
(A17) ... shouting for help when a fellow warden (A18)... her. Later she said
she (A19) ... if she could swim. "I might still have been a canal warden
if it hadn't been for falling in the canal that day," she said.
______________________________________________________________________
A10.

1) has had

2) had had

3) was having

4) has been having

A11.

1) has left

2) left

3) was left

4) was leaving

A12.

1) gave

2) was giving

3) was given

4) had been given

A13.

1) has worn

2) was worn

3) is wearing

4) wore

A14.

1) has ever been having

2) had ever had

3) was ever having

4) will ever have

A15.

1) was walking

2) has been walking

3) had walked

4) was being walked

A16.

1) felt

2) had fallen

3) was falling

4) fell

A17.

1) she started

2) she was starting

3) has she started

4) had she started

A18.

1) had saved

2) saved

3) was saved

4) was saving

A19.

1) had never been asked

2) had never asked

3) was never asking

4) never ask
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