The stories of celebrities who have made contributions, and what are the famous deeds that have cont

The story of "Picking Books".

In April 1937, following the publication of Ai Siqi's Popular Philosophy, Shanghai Reading Life Publishing House published Ai Siqi's book ---Philosophy and Life", which promoted Marxist philosophy in the form of answering readers' questions. In September 1937, he wrote "Excerpts from Ai's Writings: Philosophy and Life". In the excerpt, *** questions an argument in Aisiqi's book "Philosophy and Life".

Ai Siqi's argument is: "The difference is not a contradiction, for example, the pen, the ink, and the chair are not contradictions. But if we understand the principle of passage and change, we will know that different things can be transformed into contradictions under certain conditions, and if two different things are together at the same time and in the same place and have mutually exclusive effects, they become contradictions.

For example, if there is no contradiction between a clerk and a writer, if a clerk has an interest in writing and wants to become a writer, the two are mutually exclusive in the unity, and it becomes a contradiction. ”

After excerpting this argument from Ai Siqi, he wrote a paragraph: "The fundamental truth is true, but the statement that 'difference is not a contradiction' is not correct. It should be said that all things that differ are contradictions under certain conditions.

The reason why a person is engaged in writing is because the two certain conditions of people and composition temporarily unify the contradictory things. It cannot be said that these differences are not contradictions. The master cooks the rice and unifies the firewood, rice, oil, salt, sauce, vinegar and tea under certain conditions.

Clerks and writers can also be unified under certain conditions. Part-time work and study can unify work and study. Difference is that everything in the world is a contradiction under certain conditions, so difference is a contradiction.

This is the so-called concrete contradiction. Ai's statement is inappropriate. ”

Not only is it an excerpt from the arguments of Esqui's book "Philosophy and Life", but he also wrote to Eschi in 1937 to this end. The letter reads, "Your Philosophy and Life is one of the more profound books in your book, and I have benefited a lot from reading it, and I have copied some of it and sent it to see if there is any fault." There is a question that is slightly suspicious (not fundamentally different), please think about it again and tell us the details in person.

When will I have time to come to see you today? ”

According to relevant information, Ai Siqi read and re-read the letter and felt infinitely cordial. It seems that *** may have read all the philosophical works he wrote, and not limited to Popular Philosophy and Philosophy and Life, which is illustrated by a "medium" and "more" in the sentence "a more profound book in your writings". He read it so carefully and carefully, "There is a question that is slightly suspicious, and I have to tell it in person", but I don't know what makes *** suspicious?

So, he opened the handwritten book with the excerpt of "Summary of Ai Siqi's Philosophy and Life", and he read it page by page carefully, and turned to the end of page 14 and saw the previous paragraph written by ***.

During the reign of the marshal [Zhang Zuolin] in Northeast China, he built railways and ports to compete with Japan's power in South Manchuria and made indelible contributions to the development of Northeast China.

There is a book "Stories of Famous Persons in Chinese History".

Historical figures should be affirmed or denied according to the role they have played in promoting or hindering historical development and social progress, and whether they are beneficial or harmful to the people, which is the basic criterion for evaluating historical figures. Only by clarifying the criteria can we correctly evaluate historical people under the theoretical guidance of dialectical materialism and historical materialism.

Zhang Haidi, a young woman with a disability and a hard work. With a disability, she has accomplished many things that able-bodied people cannot do, so she has become a role model for a generation of Chinese youth, and is known as "China's 'Baoer'".

Yuan Longping solved three problems in the study of three-line hybridization of Hu Zhengdao. First, the technical scheme of "distant hybridization between wild rice and cultivated rice" was proposed, and finally an effective way to cultivate male sterile lines was found. In 1973, a complete set of sterile and maintainer lines was realized.

The second is to cultivate a number of hybrid rice combinations with strong heterosis, such as "Nanyou No. 2", which have been widely used in the production of Guangzheng Song.

He became the first scientist in the world to successfully exploit the heterosis of rice. The third is to break through the obstacles of seed production. In previous studies, the outcrossing rate of rice was only low, and the seed yield of hybrid offspring was very low, which was far from meeting the production requirements.

The International Rice Research Institute (IRRI) began its research in 1971.

In 1973, the reason was that no one at the institute believed that the problem of seed production could be solved. The research group led by Yuan Longping has successfully solved this problem, and the seed yield has gradually increased, and the current high yield has reached more than 300 kilograms.