The prevalence of urban tile houses in Song Dynasty was mainly due to (b)

The advocacy of a scholar-bureaucrat, the growth of b citizen class, the low price of c and the demand of d dignitaries.

China's prime minister system began and ended in (a).

A Qin-Ming B Qin Qing C Hamming D Han Qing

The reason why Gong Zizhen, a thinker in the late Qing Dynasty, lamented that "all horses are black" in his poems is (b)

A stereotyped examination B literature prison C military department set up D factory health system

Tang Law is the earliest complete code in China.

The earliest engraved diamond sutra in the world has a clear time record.

What is the significance of the emergence of papermaking and printing?

1. Papermaking is an important chemical process. The invention of paper is a very valuable contribution made by China to the spread and development of human culture, a great achievement in the history of China and an important influence on world history.

2. Printing is conducive to the popularization and dissemination of culture and the improvement of national quality. The spread of printing to Europe is conducive to spreading capitalist ideology and culture, breaking the cultural monopoly of the Catholic Church and creating conditions for the bourgeoisie to oppose feudalism.

Which basic national policy of China today is related to science and technology?

invigorate/rejuvenate/revitalize China through science and education