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【试题设计】阅读材料,完成下列问题。材料一东亚部分地区图(图1),蒙古国等降水量线和自然带图(图2)。材料二乌兰巴托气候资料(下表)。材料三从明末清初到20世纪初,中俄两国之间形成了一条“万里茶路”。驼队选择冬季从我国出发,春季融冰前回来。(1)简述蒙古国地貌的主要特征。(2)蒙古国水汽主要来自____,说出该国地域分异规律的类型,并分析形成的主要原因。(3)解释驼队穿越蒙古国选择冬季出发到达恰克图的原因。指出驼队在途中可能会遇到的气象灾害。
[Test design] reading materials, complete the following questions. Materials - a part of East Asia map (Figure 1), Mongolia and other precipitation lines and natural map (Figure 2). Material Two Ulan Bator climate data (table below). Materials from the late Ming and early Qing Dynasty to the early 20th century, China and Russia formed a “Wanli Chaolu.” Camel team choose to start from our country in winter, ice melt back before spring. (1) Briefly describe the main features of Mongolia’s landform. (2) The main source of water vapor in Mongolia comes from ____, which states the type of regional differentiation and analyzes the main causes. (3) Explain the reasons why caravans cross Mongolian countries to choose Qatar in winter. Pointed out that the caravan may encounter meteorological disasters on the way.