题目内容：

There are two medicines that change people’s lives, one of 1. is aspirin, 2. (invent) in 1897. It is made from leaves or tree barks(树皮) possessing a special chemical and was first sold in 3. form of tablets in 1900. Aspirin has saved many people’s lives by reducing fever and pain. It 4. (recommend) for reducing potential heart attack strokes and some cancers. There have been more discoveries on how it can help increase the 5. (long)of people’s lives and help people with diseases.

The other drug which has proved 6. (benefit) to mankind is penicillin. It was first discovered in 1928, but it was not until World II 7.penicillin was purified and produced in large quantities. Due 8. the widespread use of penicillin, many 9. (life)were saved during the war. Had penicillin not been available, many people would have died from sickness of even small wounds. Penicillin became the 10. (great) drug of the 20th century.