发酵工业发展的历史进程、重要历史阶段和典型技术_爱下问搜题

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问题问答题简答题

发酵工业发展的历史进程、重要历史阶段和典型技术

答案

参考答案：

1）天然发酵阶段，从史前到19世纪酿酒技术

2）纯培养技术的建立，主要为19世纪末到20世纪30年代，德国利斯特‘科赫完成细菌纯培养技术

3）通气搅拌发酵技术建立，1929年开始到1942年青霉素发酵生产成功

4）代谢控制发酵和现代发酵技术的发展，木下祝郎发明代谢控制发酵技术，使谷氨酸发酵生产实现产业化

完形填空

There was a time when I thought my dad didn’t know how to be a good father. I couldn’t  16  him ever saying the words “I love you.” It seems to me his only purpose in life was to say “ 17 ” to anywhere I wanted to go and anything I wanted to do, including getting a  18 . Some parents bought their kids cars when they got their driver’s licenses. Not my dad — he said that I’d have to get a job and buy my own.
So that is what I did. I got a job at a very nice restaurant and  19  every penny I could and when I had enough to buy my car, I did! The day I brought that car home, my dad was the first one I wanted to  20  it off to. “Look, dad, a car of my own. If you ever want a ride, you only need to pay me five dollars.” I offered with a smile.
“I see,” was all he said.
One day, there was something wrong with my father’s truck. So he needed a  21  to work. The sun wasn’t even up when we left the house,   22  it was already getting warm out. It was going to be a hot day. As my dad got out of my car, I   23 him, dressed in his work clothes, getting his  24  from the truck (车尾箱) of my car. Watching his sun-weathered face, and even from a distance I could tell there were 25  lines than I ever remembered being there before. I realized how hard my dad works for the family. My father is a cement finisher(水泥修整工).
Suddenly, it came up with me that he actually got down on his hands and knees to sweat over hot concrete(混凝土) to make a living for his family. And he did this day in and day out,  26 hot it got. Never, not once, had I heard him   27  about it. To him we were “worth” it. And never once did he ask us to pay for it.
When he closed the trunk, his tools set off to the side, he walked over to my window to   28  me five dollars. I rolled down the window and said “Good-bye, dad. Keep your five dollars. It’s my __29__. Don’t work too hard. I love you.”
His eyes met mine, then glanced away in the direction of his waiting tools, he   30  his throat(喉咙) and said, “Oh, and… me, too.”

选择题

全面建设小康社会，必须[ ]

①通过改革开放使经济更加发展

②大力加强民主政治建设

③大力发展社会主义先进文化

④不断增强可持续发展能力

A、①②③

B、②③④

C、①③④

D、①②③④