1. Why did the Sui Dynasty unify the north and the south? Hint: (1) objective conditions: unification is the inevitable trend of historical development at that time. In the long period of division and turmoil, the people long for reunification. During the Northern and Southern Dynasties, the great integration of the northern nationalities and the economic development in the south of the Yangtze River provided conditions. (2) Subjective conditions: The martial arts of Emperor Wendi's Wen Zhi made the economic and military strength of the Sui Dynasty increase rapidly; Chen's ruler is decadent, extravagant, corrupt and incompetent, and his rule has gone from bad to worse. 2. The poet in the Tang Dynasty said: "The death of Tao Sui is a river, and it has traveled thousands of miles since then. If there is no water temple dragon boat, it is indispensable. " Do you agree with this statement? Tell me your reasons. Hint: (1) Agreed. The excavation of the Grand Canal has played a great role in economic and cultural exchanges between the North and the South and consolidated national unity, and it has also benefited a lot today. (2) disagree. This can be explained from the tyranny embodied in the excavation of the Grand Canal and Jiangdu, combined with the rapid demise of the Sui Dynasty. Compare the Qin Dynasty and Sui Dynasty, and see what similarities they have. Prompt: (1) End the long-term separatist regime and complete reunification; (2) They all formed far-reaching systems, such as the county system in Qin Dynasty and the imperial examination system in Sui Dynasty; (3) World-famous projects were built, such as the Great Wall in Qin Dynasty and the Canal in Sui Dynasty. (4) The peasant uprising broke out and soon perished due to tyranny. 4. The imperial examination system provides ordinary intellectuals with the opportunity to be an official in politics. Talk about your views on studying and being an official. Hint: On the one hand, talk about the enthusiasm of the imperial examination system in combination with the function of the text; On the other hand, it should also be pointed out that it is very convenient for rulers to win over and control intellectuals and make them obedient slaves. You can also talk about the fact that studying as an official is not conducive to the development of science and technology. Of course, it should be affirmed that studying and being an official can benefit the people. 5. Which provinces (cities) did the Sui Canal pass through today? Tip: Beijing, Tianjin, Hebei, Henan, Anhui, Jiangsu and Zhejiang.

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