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Located in 位于、地處

A of B： B的A（都是名詞）

1.Located in the north of Shan Xi and the middle of the Yellow River,Yanan is the holy place of Chinese revolution.

了--完成時(shí)

完成時(shí)：had done have/has done. will have done

并列成分 兩個(gè)以上（，，and）

2.The old generation of revolutionists,like Mao Ze Dong,had fought here for 13 years,had led the Anti-Japan War and the war of Liberation,had cultivated the Spirit of Yan'an and had contributed greatly to Chinese revolution.

3.In Yan'an,the old revolution sites have the biggest number,the widest distribution and the highest level.

4.Yan'an is a national education base of patriotism(愛國主義)，tradition of revolution and the spirit of Yan'an.

有：

擁有have

存在there be

伴隨狀態(tài)with

5.In Yan'an,There are 9 revolution museums,which stored a great number of important objects of CCCPC and the old generation of revolutionist back in the time of Yan'an.Therefore,Yan'an is known as the City of Chinese Revolution Museum.