Вопрос по английскому языку:

Знаю много.
Страдательный залог,просьба выбрать предложения, в которых сказуемое выражено формой страдательного залога и перевести их на русский язык:
1. It has been estimated that some millions of meteors enter our atmosphere each day.
2. Radioactive isotopes are also being used successfully for food conservation.
3. You have succeeded in determining how the reaction took place.
4. A recent phenomenon in present-day science and technology has been the increasing trend towards "programmed" research.
5. No harmful influence of the work of the atomic power station on the health of the workers has been observed.
6. People usually use the decimal system for scientific purposes.
7. Last year the department was concentrating research on food storage.
8. This electronic equipment has been designed for speeding up production.
9. Several possible solutions will be chosen by the scientists of our department.
10. People must obtain accurate results from controlled experiments