In1854,LouisPasteurassumedthedutiesofaprofessorataunive...

问题详情：

In 1854, Louis Pasteur assumed the duties of a professor at a university in France. Meanwhile, he conducted studies to find out what caused milk and other drinks containing alcohol to become sour. His breakthrough came when he discovered that the souring was caused by bacteria in the liquid. He then developed a process through which the bacteria could be removed by boiling the liquid and then cooling it. This method, called pasteurization in his honor, became widespread.

At that time, silk producers were suffering because the eggs of the worms that made the silk were dying from an unknown disease. Pasteur discovered the bacteria that were killing the eggs and developed a method to kill the germs.

Pasteur next turned his attention to rabies, a deadly disease that animals transferred to humans. Many people thought Pasteur was wasting his time, but Pasteur ignored their doubts and continued his efforts to find a cure for rabies. One of his patients was a sick boy, whose mother had turned to Pasteur for help. Pasteur told the mother that he had invented a vaccine that was strong enough to kill the invisible enemy. He said that he would use a needle to inject the vaccine into the boy. The vaccine would then fight the germs, just like a soldier fights in a war.

That boy was the first person to receive the vaccine, and the treatment was a success. After that, no one had to be afraid of rabies anymore. People who had laughed at him before, now respected him. Pasteur had believed in himself and had not given up. He had won the battle with the enemy.

21. Pasteur helped the ________ industry with the method named after him.

   A. construction                           B. energy                           C. beer                       D. service

22. Why does Pasteur compare his rabies treatment with soldiers?

   A. To encourage people to pity the man.                      

B. To imply that the vaccine was strong.

   C. To express his feelings about wars.                         

D. To show that the germs could be useful.

23. What does the passage mainly talk about?

   A. The teaching techniques that Pasteur employed.

   B. Pasteur’s interest in a key manufacturing process.

   C. Pasteur’s psychological issues and their treatment.

   D. The advances that Pasteur achieved in his field.

【回答】

CBD

知识点：历史类

题型：阅读理解