Louis Pasteur was a French scientist who developed cures for many dangerous     1    (illness). He also successfully invented a way to kill bacteria in milk and make it safe to drink.

Pasteur was born   in 1822, in Dole, France. He was a courageous student who     2    (frequent) asked questions, searched for answers and challenged incorrect ideas. He     3    (receive) a Doctor of Science degree in 1847. While     4    (work) at the University of Lille, Pasteur discovered fermentation, a chemical change used to make bread, cheese and other foods, involved germs. He showed that heat killed the germs that cause fermentation. This     5    (discover) led to his invention of a process for destroying harmful germs in food, which became     6    (know) as pasteurization (巴氏灭菌法).

In the 1870s, Louis Pasteur sought to find a cure for anthrax—a disease    7    mainly affects cattle. Firstly, he found anthrax was much more likely if farmers buried dead sheep with the disease in fields. Pasteur advised farmers not     8    (bury) any dead animals in areas where cattle may eat growing grass in the future. In 1881 he conducted an experiment to try out his vaccine (疫苗)for   anthrax, which was     9    success.

Pasteur died in 1895, in Saint-Cloud, France. On his last day he remarked: "I should like to be younger, so as to devote myself    10    the study of new diseases."