题目内容：

阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。

It was in 1897 that a European chemist 1. (call) Dr. Felix Hoffmann produced aspirin from a chemical. The first trials of this medicine took place in 1899. Within a short time, aspirin became 2. best-selling medicine in the world for pain 3.(relieve). Not only has aspirin proved vital for reducing fever and helping stop pain, but there are also other things 4. aspirin can help with.

Penicillin 5. (discover) by accident in 1928, which is considered 6. (be) one of the most important medicines in contemporary society. Due 7. the widespread use of penicillin, many lives were saved in the war. If penicillin had not been available, many people 8. (die) from sickness or even small wounds. Penicillin became the 9. (great) drug of the 20th century, 10. (save) millions of lives.