Milions of aspirins are taken every year by people all around the world. The drug is found in the leaves of the willow tree. They were discovered to be good for pain by the Greek doctor Hippocrates in about 400 BC. The pill, aspirin, was developed by the German chemist, Felix Hoffman, in 1899.
Nowadays it is usedfor everything from headaches and flu to stop heart attacks.
Glass was producedfor the first time in Egypt 2,500 bc and the first glasses were madein the Italy in the thirteenth century. The idea for contact lenses was thoughtby Leonardo da Vinci in 1508, but the first lenses weren't inventeduntil 1887. Now lenses or glasses are worn by over 60% of Americans.
Milions of aspirins are taken every year by people all around the world. The drug is found in the leaves of the willow tree. They were discovered to be good for pain by the Greek doctor Hippocrates in about 400 BC. The pill, aspirin, was developed by the German chemist, Felix Hoffman, in 1899.
Nowadays it is used for everything from headaches and flu to stop heart attacks.
Glass was produced for the first time in Egypt 2,500 bc and the first glasses were made in the Italy in the thirteenth century. The idea for contact lenses was thought by Leonardo da Vinci in 1508, but the first lenses weren't invented until 1887. Now lenses or glasses are worn by over 60% of Americans.
16. are taken
17. is found
18. were discovered
19. was developed
20. is used
21. was produced
22. were made
23. was thought
24. weren't invented
25. are worn