(1) The south has become the economic center of gravity (or the economic center of gravity has moved south, or the economic center of gravity has moved from the Yellow River basin to the Yangtze River basin, 3 points); The south is relatively stable. (3 points)?

(2) printing (3 points); "Jiaozi" is the earliest paper money in the world (3 points)

(3) The prosperity of commerce and the development of science and technology. (4 points, similar expressions can also be given points as appropriate)

Analysis of test questions: (1) Material analysis questions examine students' ability to analyze and understand materials, understand materials, extract effective information to connect with what they have learned, and answer questions as required. "Suzhou and Huzhou are ripe, and the world is full" means that when the grain in Suzhou and Huzhou is ripe, it can meet the needs of people all over the world. It shows that Su Hu became an important granary in China at that time, that the south became the support of the whole country's grain, and that the south became the economic center of our country. "The country is fundamental, and it is dependent on the southeast" indicates that the ancient economic center of China moved southward and finally completed, and the economic development in the south was ahead of that in the north. From a "political point of view", the rapid economic development in the south has become the reason for the economic center of gravity. Only when the political situation is stable can people engage in production and promote economic development, so the situation in the south at that time must be peaceful and stable, with few wars.

(2) This question is a picture reading question, which examines students' ability to observe pictures. The four great inventions in ancient China are gunpowder, papermaking, printing and compass. From Figure 1, we can see that the trademark is printed with copper plates, so it reflects "printing"; In ancient times, metal money was circulating in the market, which was inconvenient for people to carry. In the early Northern Song Dynasty, Jiaozi appeared in Sichuan, which was the earliest paper money in the world. This is the status of "Jiaozi".

(3) Combined with the second question, "Needle Shop Trademark and Copper Plate in Song Dynasty" shows the development of printing in China, which is an achievement in the field of science and technology in China. The appearance of the needle shop trademark in the Song Dynasty shows that there were many shops at that time, and the appearance of "Jiaozi" was to solve the problem of inconvenience in carrying money, indicating that there were many money in circulation at that time. So the two pictures show the commercial prosperity and the progress of science and technology in the Song Dynasty.