The story of the great mathematician Chen Jingrun.

Uncle Chen Jingrun is a mathematician and is famous all over the world. He studies and works tirelessly and never misses a minute.

At dawn in the morning, there was a sound of reading in Uncle Chen's cabin. When the sun came out, his bedside was filled with many manuscripts of mathematical calculus. Before the bell rang, he had come to the library gate and waited to open the door.

As soon as Uncle Chen enters the library every day, he is immersed in the sea of books, forgetting himself and everything.

Once, at noon, the library was very quiet, and it was past the closing time. The librarian asked loudly if there was anyone in the library, but no one answered. The keeper locked the door and went to eat. At this time, Uncle Chen felt that he had to go back for dinner, but he went to the door and found that the door was locked. He smiled indifferently and went back to the library to read.

Whenever night falls, Uncle Chen either writes papers or studies math books in French and German under the desk lamp. He often goes back to the dormitory by moonlight until late at night.

Day after day, year after year, Uncle Chen keeps up with the pace of time, step by step, and goes to the peak of science. His "Goldbach conjecture" has attracted the attention of mathematicians all over the world, and he has become a famous mathematician in China and even the whole world, winning honor for the country and making great contributions to all mankind.

1. Understand the meaning of words according to the context.

1. Diligence: I work very hard and I don't know how tired I am.

(2) Night arrival: After the sun goes down, it will be dark and night arrival.

2. The second to fifth paragraphs describe the daily work from morning till night, and the words indicating this order are as follows:

At dawn, the sun comes out, at noon, night falls, day after day, year after year.

3. Answer the question according to the text: What kind of person is Uncle Chen Jingrun?

Uncle Chen Jingrun is a diligent worker and cherishes time.