С помощью какого инструмента можно узнать, что думают посетители о Web-страничке? А) Учетная запись; В) Книга посетителей; С) Гостевая книга; D) Книга жалоб и предложений.

Составьте уравнения реакций,с помощью которых можно осуществить следующие превращения : CH3CI -> CH3OH -> CO2 ?

Раскройте скобки, употребляя глаголы в Present Continuous или Present Simple.

His father (not to watch) TV at the moment. He (to sleep) because he (to be) tired. 2. Pat (not to cook) dinner at the moment. She (to talk) dinner every Monday. 3. I (not to drink) coffee now. I (to write) an English exercise. 4. I (not to drink) coffee in the evening. I (to drink) coffee in the morning. 5. Your friend (to do) his homework now? 6. Your friend (to go) to school in the morning? 7. Look! The baby (to sleep). 8. The baby always (to sleep) after dinner. 9. My grandmother (not to work). She is on pension. 10. My father (not to sleep) now. He (to work) in the garden. 11. I usually (to get) up at seven o’clock in the morning. 12. What your sister (to do) now? – She (to wash) her face and hands. 13. When you usually (to come) home from school? – I (to come) at three o’clock. 14. Where your cousin (to work)? – He (to work) at a hospital. 15. Your sister (to study) at college? – No, she (to go) to school. 16. My cousin (to go) to school every day. 17. My mother (not to play) the piano now. She (to play) the piano in the morning. 18.  When you (to listen) to the news on the radio? 19. Who (to make) breakfast for you now? 20. You (to read) a magazine and (to think) about your holidays at the moment? 21. They (to be) good dancers but they (not to do) to discos very often. 22. What she (to talk) about right now?

из формулы S=b1/(1-q)*h выразить q