Unit 2 Territory and Environment,学习任务,整体上掌握Text A和Text B 两篇文章的内容，包括背景资料，单词，相关专有名词等。 完成Text A 和Text B 的课后题目。 浏览Text C。,Text A Territory of China,导读：中国位于欧亚大陆东部，太平洋西岸。中国约有4079年的已知文明史，是亚非大河流域四大文明古国之一，中国的面积为960万平方千米，仅次于俄罗斯、加拿大。中国地势西高东低，呈阶梯状下降，山地、高原和丘陵约占陆地面积的67%，盆地和平原约占陆地面积的33%。山脉多呈东西和东北一西南走向。海岸线以东以南的大陆架，蕴藏着丰富的海底资源。,乌苏里,青海,Notes,Wusuli (乌苏里)：or called the Usuri ulais, a river in the south of the Outer Manchuria (Russian Far East) and east of Inner Manchuria (Northeast China). It rises in the Sikhote-Alin range, flowing north, forming part of the Sino-Russian border based on the Sino-Russian Convention of Peking in 1860, until it joins the Amur River at Khabarovsk. It is approximately 897km in length.,The area of the Usuri basin is 193,000 km. Its waters come from rain (60%), snow (30-35%) and subterranean springs. Average discharge is 1,150 m/s, elevation - 1,682 m. The Usuri River is known for its catastrophic floods. It freezes up in November and stays under the ice until April. The river teems with different kinds of fish: grayling, sturgeon, humpback salmon (gorbusha), chum salmon (keta) and others.,Russia Far East (俄罗斯远东地区): is a term that refers to the Russian part of the Far East, i.e., extreme east parts of Russia, between Lake Baikal in Eastern Siberia and the Pacific Ocean. The Far Eastern Federal District, which covers this area, borders with the Siberian Federal District in the west.,Eurasia (欧亚大陆): is a continent or supercontinent comprising the traditional continents of Europe and Asia; covering about 52,990,000 km2 or about 10.6% of the Earths surface (36.2% of the land area) located primarily in the eastern and northern hemispheres. Physiographically, it is a single continent, the concepts of Europe and Asia as distinct continents date back to antiquity and their borders are geologically arbitrary. Eurasia, in turn, is part of the yet larger landmass of Afro-Eurasia, whereby Eurasia is joined to Africa at the Isthmus of Suez. Eurasia is inhabited by almost 4 billion people, more than 72.5% of the worlds population.,Khabarovsk (哈巴罗夫斯克): is the largest city and the administrative center of Khabarovsk Krai, Russia. It is located some 30 kilometres from the Chinese border. It is the second largest city in the Russian Far East, after Vladivostok. The city became the administrative center of the Far Eastern Federal District of Russia in 2002.,Kokonor (库库诺尔): is a saline lake situated in the province of Qinghai, and is the largest lake in China. The names Qinghai and Kokonor both mean “Blue/Teal Sea/Lake“ in Chinese and Mongolian. It is located about 100 kilometres west of the provincial capital of Xining at 3,205 m (10,515 feet) above sea level in a depression of the Tibetan Plateau in the traditional Tibetan province of Amdo. Twenty-three rivers and streams empty into Qinghai Lake, most of them seasonal. Five permanent streams provide 80% of total influx.,Mongolian Language (蒙古语): is the official language of Mongolia and the best-known member of the Mongolic language family. The number of speakers across all its dialects may be 5.2 million, including the vast majority of the residents of Mongolia and many of the Mongolian residents of the Inner Mongolia autonomous region of China.,In Mongolia, the Khalkha dialect, written in Cyrillic, is predominant, while in Inner Mongolia, the language is more dialectally diverse and is written in the traditional Mongolian script. In the discussion of grammar to follow, the variety of Mongolian treated is Standard Khalkha Mongolian (i.e., the standard written language as formalized in the writing conventions and in the school grammar), but much of what is to be said is also valid for vernacular (spoken) Khalkha and other Mongolian dialects, especially Chakhar.,Gulf of Bohai (渤海): also known as Bohai Sea, Bohai, or Bo Hai, is the innermost gulf of the Yellow Sea on the coast of Northeastern and North China. It is approximately 78,000kin area and its proximity to Beijing, the capital of the Peoples Republic of China, makes it one of the busiest seaways in the world,North China Plain (华北平原): is based on the deposits of the Yellow River and is the largest alluvial plain of eastern Asia. The plain is bordered on the north by the Yanshan Mountains and on the west by the Taihang Mountains edge of the Shanxi (western mountains) plateau. To the south, it merges into the Yangtze Plain. From northeast to southeast, it fronts the Bohai Gulf, the highlands of Shandong Peninsula, and the Yellow Sea. The Yellow River flows through the middle of the plain into Bohai Gulf.,Tibetan Plateau (青藏高原): is a vast, elevated plateau in Central Asia covering most of the Tibet Autonomous Region and Qinghai, in addition to smaller portions of western Sichuan, southwestern Gansu, and northern Yunnan in Western China and Ladakh in India. It stretches approximately 1,000 kilometres north to south and 2,500 kilometres east to west. The average elevation is over 4,500 metres, and all 14 of th