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1. When did chemical knowledge advance to contribute
signifi­cantly to pharmacology?-However, only in the late eighteenth and nineteenth centuries chemicalknowledge advanced to the point at which it became capable to contributesignificantly to pharmacology.
2. What did the industrial revolution do?-The industrial revolution of the last century gave birth to syntheticorganic chemistry and established a new branch of knowledge necessary for thesynthesis of new drugs.
3. How is pharmacy defined at present?-At present pharmacy is defined as the art and scienceof recognition, identification, collection, preparation, storage, test,composition and distribution of all substances used in preventive or incurative medicine for people’s treatment. 
4. Which contribution was the isolation of the
active constituents?-The first and the most important was theisolation in relatively pure chemical form of the active constituents ofplants.
5. Why do pharmaceutical students master so many
subjects?-It includes different subjects, suchas physics, chemistry, botany, pharmacognosy, pharmacology, etc. whichpharmaceutical students master to become highly qualified pharmaceutists.
6. When did pharmacy become an independent branch of
medicine?-It becamean independent branch of medicine when an increasing variety of drugs and theircomplex compositions demanded specialists familiar with such technologies.
7. How long did it take man to make this very
important step?-It tookman over five thousand years to make this very important step.
8. Where does the word «pharmacy» come from?-The word «pharmacy» comes from Greek and in the modem language means «adrug»
9. What specialists did an increasing variety of
drugs demand?-The first and the most important was theisolation in relatively pure chemical form of the active constituents ofplants.
10. Who contributed to our present knowledge of
pharmacy?-The civilization of the past contributed to our present knowledge by thecollection of drugs and medicinal preparations.

1. When does your working day start?

2. Do you live far from where you work?

3. You're usually busy from 9am to 5pm, aren't you?

4. Do you eat at a cafe or at home?

5. What books do you read in English lessons?

6. What time do you have Breakfast?

7. Does your friend study English or French?

8. Do you have any siblings?

9. You know this man, don't you?

10. How do you like this movie?

11. Where do you study?

12. Where do you usually go in the evening?

13. How much paper do you need?

14. Who lives near here? I am.

15. What subjects do you study at the Institute?

16. They have a big family, don't they?

17. What does your sister like?

18. Anna and Elena are sisters, aren't they?

19. What do you need?

20. Your brother is home now, isn't he?