The following are photos taken by Xiaoyun and her classmates in different places in China during the summer vacation. Answer the questions according to the photos and related introductions. ( 1)

(1) Xiaoyun's "snowy plateau" refers to the Qinghai-Tibet Plateau, the highest plateau in the world, with an average elevation of more than 4,000 meters. It is called "the roof of the world". Due to the high altitude, cold is a prominent natural environment feature in this area. In June, 2005, Qinghai-Tibet Railway, the plateau railway with the highest altitude, the longest route through frozen soil and the longest mileage in the world, was completed. Ending the history of no trains in Tibet. The Qinghai-Tibet Plateau is characterized by undulating peaks, and there are many gentle basins and valleys between mountains. The mountains are covered with snow all year round, and glaciers crisscross. After the ice and snow melt, it becomes an important source of water for the Yangtze River, the Yellow River and other rivers. Cold, lack of oxygen and thin air are the environmental characteristics of the Qinghai-Tibet Plateau. It is a wise choice to pack sunscreen, winter clothes and articles as lightly as possible, but it is wrong to go skating.

(2) Inner Mongolia Plateau, located in the north of China, with an area of 1 10,000 square kilometers and an altitude of about 1 10,000 meters. The plateau is flat and open, with deserts and Gobi in the northwest and fertile grasslands in the east and middle. Every July and August, the traditional Nadam convention is held in places where Mongolian people live in compact communities. "Nadam" means entertainment and games in Mongolian.

(3) Qinling Mountains and Huaihe River are the dividing lines between southern and northern areas of China, and also between paddy fields and dry land. The endless wheat fields that Xiaogang saw are located in the northern part of China, and the local cultivated land types are mainly dry land.

(4) Xiao Hong's land of plenty is located in the south of the four regions of China. The cultivated land in this area is mainly paddy fields, and the main food crop is rice. Qinling Mountains and Huaihe River are the dividing lines between the north and the south of China. 1 the place where the 0℃ isotherm passes; 800mm and other places where the precipitation line passes; In the temperature zone, the boundary between warm temperate zone and subtropical zone; The dividing line between dry and humid areas, humid areas and semi-humid areas; The dividing line between temperate monsoon climate and subtropical monsoon climate; The dividing line between rice and wheat; The dividing line between subtropical evergreen broad-leaved forest and temperate deciduous broad-leaved forest.

So the answer is: (1) Qinghai-Tibet; High; Cold; Qinghai-Tibet; d； (2) Inner Mongolia; Mongolia; b； (3) dry land; Qinling mountains; Huaihe River; (4) the south; Rice; Cultivated land is mainly paddy fields.