② The Southern Song Dynasty perished, 1276.

(3) In order to facilitate the transportation of grain from south to north; Starting point of grain transportation: Hangzhou; Starting point of shipping: Liujiagang; Gu zhi

(4) Tibet

(5) Hui nationality

Test analysis: The question (1) mainly examines students' accurate memory of the Yuan Dynasty. According to what they have learned, we can know that the Yuan Dynasty was founded by Mongols, and it was the first unified empire established by ethnic minorities in the history of China, with its capital mostly (now Beijing).

Question (2) mainly examines students' accurate understanding of the historical facts related to the reunification of the Yuan Dynasty. Looking back on what they learned, we can know that Kublai Khan changed his country name to Dayuan in 127 1 and established the Yuan Dynasty, namely Yuan Shizu. He conquered the Southern Song Dynasty in 1276 and ruled all China [1], which ended at the end of the Tang Dynasty.

Question (3) mainly examines students' accurate understanding of the historical facts related to water transportation and maritime construction in the Yuan Dynasty. In order to facilitate the transportation of grain from the south to the north, Yuan Shizu ordered the construction of two new canals, from Hangzhou to Linqing, to Zhigu and finally to Dadu. It has also opened up an unprecedented scale of maritime transportation. From Liujiagang to zhi gu and finally to Dadu, the transportation of grain is gradually dominated by maritime transportation.

Question (4): It mainly examines students' accurate memory of historical facts related to the jurisdiction of ethnic minorities in the Yuan Dynasty. According to their understanding, Zheng Xuan Academy is the earliest administrative institution established by the central government to manage Tibet. Nominally, he was the Imperial Marshal, and there was also an envoy from Hyun Positive. In special local affairs, it is very convenient to set up Zheng Xuan Institute.

Question (5) mainly examines students' accurate understanding of the formation of Hui nationality. According to their knowledge, during the Yuan Dynasty, many Han people came to the frontier, and all ethnic groups in the frontier, including Mongols, moved to the Central Plains and Jiangnan in large numbers to live with the Han people. In addition, some Persians and Arabs who settled in China believed in Islam, lived together with the ethnic minorities in China for a long time, married each other and gradually merged, and began to form a new ethnic group-Hui.